Integrated phylogenomics and fossil data illuminate the evolution of beetles.

Beetles constitute the most biodiverse animal order with over 380 000 described species and possibly several million more yet unnamed. Recent phylogenomic studies have arrived at considerably incongruent topologies and widely varying estimates of divergence dates for major beetle clades. Here, we use a dataset of 68 single-copy nuclear protein-coding (NPC) genes sampling 129 out of the 193 recognized extant families as well as the first comprehensive set of fully justified fossil calibrations to recover a refined timescale of beetle evolution. Using phylogenetic methods that counter the effects of compositional and rate heterogeneity, we recover a topology congruent with morphological studies, which we use, combined with other recent phylogenomic studies, to propose several formal changes in the classification of Coleoptera: Scirtiformia and Scirtoidea sensu nov., Clambiformia ser. nov. and Clamboidea sensu nov., Rhinorhipiformia ser. nov., Byrrhoidea sensu nov., Dryopoidea stat. res., Nosodendriformia ser. nov. and Staphyliniformia sensu nov., and Erotyloidea stat. nov., Nitiduloidea stat. nov. and Cucujoidea sensu nov., alongside changes below the superfamily level. Our divergence time analyses recovered a late Carboniferous origin of Coleoptera, a late Palaeozoic origin of all modern beetle suborders and a Triassic-Jurassic origin of most extant families, while fundamental divergences within beetle phylogeny did not coincide with the hypothesis of a Cretaceous Terrestrial Revolution.

Eucinetus linskyi, a new replacement name for preoccupied Eucinetus bicolor Lawrence, 2019, non Reitter, 1887 (Insecta: Coleoptera: Eucinetidae).

The species name Eucinetus bicolor Lawrence was proposed by Lawrence (2019, p. 155) for a new coleopteran species from eastern Victoria, Australia. However, this name was already used for the Palaearctic Eucinetus bicolor Reitter (1887, p. 514), currently combined as Nycteus bicolor (Reitter, 1887), and thus the names are primary homonyms according to ICZN Articles 53.3 and 57.2 (International Commission on Zoological Nomenclature 1999). To resolve this primary homonymy, in accordance with ICZN Article 60.3 (International Commission on Zoological Nomenclature 1999), Eucinetus linskyi is here proposed as a replacement name for Eucinetus bicolor Lawrence, 2019, non Reitter. This name is a patronym based on Marek Linský of Bratislava, Slovakia, who called my attention to this homonymy.

The extant species of the genus Omma Newman and description of Beutelius gen. nov. (Coleoptera: Archostemata: Ommatidae: Ommatinae).

The genus Omma Newman (type species Omma stanleyi Newman) is revised and redefined based on extant species, with examination of additional fossil species. As a result, only the species O. stanleyi Newman is retained in Omma and a new genus, Beutelius gen. nov. (type species Omma mastersi MacLeay), is described to accommodate the remaining Australian species: B. mastersi (MacLeay), comb. nov., B. sagitta (Neboiss), comb. nov. and B. rutherfordi (Lawrence), comb. nov. A new species, Beutelius reidi sp. nov., is described from Melville Range Nature Reserve in New South Wales, Australia. Diagnoses and new records for extant Ommatinae, including the male of B. sagitta and female of B. mastersi, are provided, as well as a key to extant genera and species.

The Australian Lymexylidae (Coleoptera: Tenerionoidea) with one new genus and two genera new to Australia.

The generic classification of Lymexylidae is reexamined, particularly with reference to the Australian fauna. The transfer of the Madagascar genus and species Alcestoma serropalpoides Fairmaire (1895) from Melandryidae to Lymexylidae, proposed by Nikitsky in Nikitsky et al. (1998), is confirmed and the genus is considered to be a senior synonym of Protomelittomma Wheeler (1986), syn. n. The occurrence of the genus Alcestoma in Australia is noted and a new species, Alcestoma queenslandicum, sp. n. is described from northern Queensland. The genus Arractocetus Kurosawa (1985) is also recorded for the first time from Australia, but the species is not described. A new genus, Leptonetron, gen. n., is described, based on the type species Atractocerus victoriensis Blackburn, 1891, which is considered to be a senior synonym of Atractocerus tasmaniensis Lea, 1917, syn. n. A key is provided for the Australian genera and species of Lymexylidae and the evolution of the family is briefly discussed.

New species of Eucinetus and Noteucinetus from Australia (Coleoptera: Scirtoidea: Eucinetidae).

Two new species of Noteucinetus Bullians Leschen and 12 new species of Eucinetus Germar are described from continental Australia and Tasmania. A key is given to the two genera and all described Australian species. The following new species are described: Eucinetus bicolor, sp. nov., Eucinetus bicolorellus, sp. nov., Eucinetus brindabellae, sp. nov., Eucinetus dorrigo, sp. nov., Eucinetus limitaris sp. nov., Eucinetus lorien, sp. nov., Eucinetus minutus, sp. nov., Eucinetus nebulosus, sp. nov., Eucinetus protibialis, sp. nov., Eucinetus similis, sp. nov., Eucinetus tasmaniae, sp. nov., Eucinetus tropicus, sp. nov., Noteucinetus ornatus, sp. nov., and Noteucinetus victoriae, sp. nov.

Australian Nitidulinae: general review with descriptions of new genera and species (Coleoptera: Nitidulidae).

The classification of the subfamily Nitidulinae is reviewed, as it applies to those species occurring within Australia and its territories. Comments are made concerning the currently recognised tribes and generic "complexes" within this subfamily, Australian genera are briefly discussed, with reference to recent and proposed changes in their classification, and several new genera and species are described. The following new taxa are described: Aenigmoronia echinodes, gen. sp. nov., Australycra similis, sp. nov., Austronitidula multimaculata, gen. sp. nov., Cychramus splendidus, sp. nov., Lasiodites howensis, sp. nov. and Temnelytron nigrum, gen. sp. nov. The following synonymy is proposed: Stelidota nigrovaria (Fairmaire, 1849) (= Aethinodes variabile Lea, 1921), syn. nov. The genus Testudoraea Kirejtshuk, 1986, stat. nov., is recognised as a distinct genus, and Perilopsis australis Kirejtshuk, 1990 is considered to be an unnecessary replacement name for Testudoraea flava Kirejtshuk, 1986.

Basal polyphagan beetles in mid-Cretaceous amber from Myanmar: biogeographic implications and long-term morphological stasis.

The origin and early evolutionary history of polyphagan beetles have been largely based on evidence from the derived and diverse 'core Polyphaga', whereas little is known about the species-poor basal polyphagan lineages, which include Scirtoidea (Clambidae, Decliniidae, Eucinetidae, and Scirtidae) and Derodontidae. Here, we report two new species Acalyptomerus thayerae sp. nov. and Sphaerothorax uenoi sp. nov., both belonging to extant genera of Clambidae, from mid-Cretaceous Burmese amber. Acalyptomerus thayerae has a close affinity to A. herbertfranzi, a species currently occurring in Mesoamerica and northern South America. Sphaerothorax uenoi is closely related to extant species of Sphaerothorax, which are usually collected in forests of Nothofagus of Australia, Chile, and New Zealand. The discovery of two Cretaceous species from northern Myanmar indicates that both genera had lengthy evolutionary histories, originated at least by the earliest Cenomanian, and were probably more widespread than at present. Remarkable morphological similarities between fossil and living species suggest that both genera changed little over long periods of geological time. The long-term persistence of similar mesic microhabitats such as leaf litter may account for the 99 Myr morphological stasis in Acalyptomerus and Sphaerothorax. Additionally, the extinct staphylinoid family Ptismidae is proposed as a new synonym of Clambidae, and its only included species Ptisma zasukhae is placed as incertae sedis within Clambidae.

Lepicerus larva still unknown: a correction (Coleoptera: Lepiceridae, Phalacridae).

The larva of Lepicerus inaequalis Motschulsky was described by Lawrence et al. (2013) based on several early instars and one late instar collected among wet leaves and debris near Gamboa, Panama. The identification was based on collection of an adult Lepicerus in a similar habitat nearby and a combination of characters found in other myxophagan immatures but not known in other beetle larvae. We accepted this identification with some reservations, but a misinterpretation of one feature in the original description plus an unexpected new source of evidence makes it likely that our identification was incorrect. The one misinterpreted feature in this larva was the retraction of the ventral mouthparts. Reexamining the larvae, it was found that a pair of tendons extending mesally from the hypostomal rods were misinterpreted as maxillary bases. The mouthparts are definitely protracted, which is expected with long hypostomal rods. The new source of evidence is somewhat complicated, as explained below.

The Australian Ciidae (Coleoptera: Tenebrionoidea): supplement.

An addendum to the revision of the Australian ciid fauna contains descriptions of 17 new species, information on recently described Australian species, addition of one described species new to the fauna, and corrections to the previous revision. Keys are provided to the Australian species of Cis, Notapterocis, Orthocis and Paratrichapus. The following new species are described: Cis apodemus, sp. nov., C. bicolorellus, sp. nov., C. brachytrichus, sp. nov., C. christmasensis, sp. nov.; C. densus, sp. nov., C. depressus, sp. nov., C. howensis, sp. nov., C. incomptus, sp. nov., C. latemarginatus, sp. nov., C. macilentus, sp. nov., C. occidentalis, sp. nov., C. prominens, sp. nov., C. pycnostictus, sp. nov., C. rhaibocerus, sp. nov., Notapterocis acutus, sp. nov., N. nesiotes, sp. nov., and Orthocis inordinatus, sp. nov.. Orthocis flavipennis (Pic) is recorded from Australia for the first time, and the Australian record of O. auriculariae Lawrence (Lawrence, 2016) is considered to be based on misidentified specimens of O. flavipennis. Notes are also included on the recently described Australian species by Souza-Gonçalves Lopes-Andrade (2017): Scolytocis australimontensis and Xylographella frithae, and those described by Souza-Gonçalves et al. (2018): Paratrichapus australis, P. burwelli, P. christmasensis, P. metallonotum and P. peckorum.

Review of the Australian Cyllodini (Coleoptera: Nitidulidae: Nitidulinae), with descriptions of new taxa, and notes on the genus Macleayania (Nitidulini).

The genera of the nitiduline tribe Cyllodini occurring in Australia are reviewed and a key is provided for their separation. Each genus is discussed, with an emphasis on the Australian fauna, and an hypothesis is given concerning the source of the introduced Camptodes species and its connection with the program for biological control of Opuntia cacti. The specimens identified by Kirejtshuk (2003) as Macleayania amphotiformis (Reitter, 1880b) were found to represent two widely overlapping species later named by Olliff (1886) in the trogossitid genus Ancyrona. The following new genus and species are included: Cyllopallodes, gen. nov., Gymnocychramus bicolor, sp. nov., Pallodes nigroapicalis, sp. nov. The following new combinations and synonymies are also included: Coxollodes loriai (Grouvelle, 1906) (Pallodes) (= Pallodes opacus Grouvelle, 1906, syn. nov.); Cyllodes ruficeps (Reitter, 1880a) (Strongylus) (= Pseudocamptodes blackburni Grouvelle, 1902, syn. nov.; Pseudocamptodes fulviceps Grouvelle, 1906, syn. nov.); Cyllopallodes limbicollis (Reitter, 1880b) (Pallodes), comb. nov.; Pallodes beccarii Grouvelle, 1906 (= Pallodes gestroi Grouvelle, 1906, syn. nov.); Macleayania amphotiformis (Reitter, 1880b) (= Ancyrona amica Olliff, 1886, syn. nov.); Macleayania vesca (Olliff, 1886) (Ancyrona) comb. nov. The lectotypes of Camptodes humeralis (Brullé, 1842), Coxollodes loriai (Grouvelle, 1906), C. opacus (Grouvelle, 1906), Cyllodes fulvipes (Grouvelle, 1906), Pallodes beccarii Grouvelle, 1906, P. gestroi Grouvelle, 1906, and P. misellus Grouvelle, 1906 are designated. Information on and syntype information from Macleayania amica (Olliff, 1886), M. vesca (Olliff, 1886), Cyllodes blackburni (Grouvelle, 1906) and C. rufipes (Reitter, 1880a) are given.

Whirling in the late Permian: ancestral Gyrinidae show early radiation of beetles before Permian-Triassic mass extinction.

BACKGROUND: Gyrinidae are a charismatic group of highly specialized beetles, adapted for a unique lifestyle of swimming on the water surface. They prey on drowning insects and other small arthropods caught in the surface film. Studies based on morphological and molecular data suggest that gyrinids were the first branch splitting off in Adephaga, the second largest suborder of beetles. Despite its basal position within this lineage and a very peculiar morphology, earliest Gyrinidae were recorded not earlier than from the Upper Triassic. RESULTS: Tunguskagyrus. with the single species Tunguskagyrus planus is described from Late Permian deposits of the Anakit area in Middle Siberia. The genus is assigned to the stemgroup of Gyrinidae, thus shifting back the minimum age of this taxon considerably: Tunguskagyrus demonstrates 250 million years of evolutionary stability for a very specialized lifestyle, with a number of key apomorphies characteristic for these epineuston predators and scavengers, but also with some preserved ancestral features not found in extant members of the family. It also implies that major splitting events in this suborder and in crown group Coleoptera had already occurred in the Permian. Gyrinidae and especially aquatic groups of Dytiscoidea flourished in the Mesozoic (for example Coptoclavidae and Dytiscidae) and most survive until the present day, despite the dramatic "Great Dying" - Permian-Triassic mass extinction, which took place shortly (in geological terms) after the time when Tunguskagyrus lived. CONCLUSIONS: Tunguskagyrus confirms a Permian origin of Adephaga, which was recently suggested by phylogenetic "tip-dating" analysis including both fossil and Recent gyrinids. This also confirms that main splitting events leading to the "modern" lineages of beetles took place before the Permian-Triassic mass extinction. Tunguskagyrus shows that Gyrinidae became adapted to swimming on the water surface long before Mesozoic invasions of the aquatic environment took place (Dytiscoidea). The Permian origin of Gyrinidae is consistent with a placement of this highly derived family as the sister group of all remaining adephagan groups, as suggested based on morphological features of larvae and adults and recent analyses of molecular data.

The Australian Ciidae (Coleoptera: Tenebrionoidea): A Preliminary Revision.

The Australian ciid fauna is revised based on 75 described species (56 of them new) and three undescribed species, placed in 22 genera (nine of them new and nine newly recorded from Australia). The revision is considered preliminary, since about 50 other undescribed Australian species have been seen (usually as uniques or in short series), and it is likely that more will be found with increased intensive collecting. One additional New Caledonian species is also described, and one Cis species is considered to be based on a mislabelled Hawaiian specimen. The subfamily Ciinae, to which all species belong, is described based on adults and larvae, and keys are included to all known Australian genera and described species. Where material has been available, male and female genitalia have been described and many of those illustrated. The following new genera are described: Amphibolocis Lawrence gen. nov., Australocis Lawrence gen. nov., Ctenocis Lawrence gen. nov., Echinocis Lawrence gen. nov., Ditrichocis Lawrence gen. nov., Glyphidope Lawrence gen. nov., Malleecis Lawrence gen. nov., Notapterocis Lawrence gen. nov., Pseudeuxestocis Lawrence gen. nov. The following genera are recorded for the first time from Australia: Acanthocis Miyatake, Ceracis Mellié, Dichodontocis Kawanabe, Ennearthron Mellié, Hadreule Thomson, Neoennearthron Miyatake, Paratrichapus Scott, Scolytocis Blair and Xylographella Miyatake (the last three without described Australian species). The following new species are described (all native to Australia or its territories, unless otherwise indicated): Amphibolocis glabratus Lawrence, sp. nov., Australocis ruber Lawrence, sp. nov., Ceracis christmasensis Lawrence, sp. nov., Cer. communis Lawrence, sp. nov., Cer. divergens Lawrence sp. nov., Cer. fictus Lawrence sp. nov., Cis biconcavus Lawrence & Paviour-Smith, sp. nov., C. bisericeus Lawrence sp. nov., C. blackburni Lawrence & Paviour-Smith sp. nov., C. canberrae Lawrence sp. nov., C. capillatus Lawrence sp. nov., C. clypeodentes Lawrence & Paviour-Smith sp. nov., C. convexiformis Lawrence sp. nov., C. crassus Lawrence sp. nov., C. deficiens Lawrence sp. nov., C. denticulatus Lawrence sp. nov., C. deserticolus Lawrence sp. nov., C. dissidens Lawrence sp. nov., C. echidnoides Lawrence & Paviour-Smith sp. nov., C. eremicus Lawrence sp. nov., C. guangxiensis Lawrence sp. nov. (introduced from China), C. inflatus Lawrence, sp. nov., C. microcerus Lawrence  sp. nov., C. minutipunctatus Lawrence sp. nov., C. nitidonotum Lawrence sp. nov., C. obscuronotum Lawrence sp. nov., C. parviniger Lawrence sp. nov., C. planomarginatus Lawrence & Paviour-Smith sp. nov., C. simillimus Lawrence sp. nov., C. sordidus Lawrence & Paviour-Smith, sp. nov., C. subglaber Lawrence & Paviour-Smith sp. nov., C. subparallelus Lawrence sp. nov., C. tasmanorae Lawrence sp. nov., C. tricolor Lawrence sp. nov., C. victoriae Lawrence sp. nov., C. yorkensis Lawrence sp. nov., Ctenocis caledonicus Lawrence sp. nov. (New Caledonia), Ctenocis pectinipes Lawrence & Paviour-Smith sp. nov., Dichodontocis queenslandicus Lawrence sp. nov., Echinocis phellinophilus Lawrence sp. nov., Ennearthron alienindicus Lawrence sp. nov. (introduced from India), Glyphidope simplex Lawrence sp. nov., G. variabilis Lawrence sp. nov., Hadreule australiense Lawrence sp. nov., Malleecis flavus Lawrence sp. nov., Neoennearthron meridionale sp. nov., Notapterocis ellipticus Lawrence sp. nov., Notapterocis globulus Lawrence sp. nov., Notapterocis grossulus Lawrence sp. nov., Notapterocis hirsutulus Lawrence sp. nov., Notapterocis sannio Lawrence sp. nov., Octotemnus ambiguus Lawrence sp. nov., Octotemnus exilis Lawrence sp. nov., Orthocis latemarginatus Lawrence sp. nov., Orthocis quadrimaculatus Lawrence sp. nov., Pseudeuxestocis burwelli Lawrence sp. nov. The following new combinations are proposed: Acanthocis armiger (Blair, 1940) (Cis), comb. nov., Ctenocis zeelandicus (Reitter, 1880) (Cis), comb. nov., Ditrichocis pulchellus (Scott, 1926) (Ennearthron), comb. nov., Ditrichocis bifasciatus (Reitter, 1877) (Cis), comb. nov. and Paratrichapus lobipes (Broun, 1895) (Cis), comb. nov. The following synonymies are proposed: Cis recurvatus Broun, 1883 (= Cis victoriensis Blackburn, 1891 syn. nov., = Cis tasmanicus Blair, 1940 syn. n.). The following 13 genera are redescribed: Acanthocis Miyatake, 1955; Ceracis Mellié, 1849; Cis Latreille, 1796; Dichodontocis Kawanabe, 1994; Ennearthron Mellié, 1847; Hadreule Thomson, 1859; Neoennearthron Miyatake, 1954; Octotemnus Mellié, 1847; Orthocis Casey, 1898; Paratrichapus Scott, 1926; Scolytocis Blair, 1928; Xylographella Miyatake, 1985; Xylographus Mellié, 1847. The following 20 species are redescribed: Acanthocis armiger (Blair, 1940); Cis australis Blackburn, 1888; Cis bilamellatus Wood, 1884; Cis cavifrons Blair, 1940; Cis cervus Blair, 1940; Cis chinensis Lawrence, 1991; Cis clarki Blair, 1940; Cis fuscipes Mellié, 1849; Cis laminicollis Blair, 1940; Cis recurvatus Broun, 1883; Cis sellatus Blair, 1940; Cis setiferus Blackburn, 1888; Cis walkeri Blair, 1940; Ditrichocis pulchellus (Scott, 1926); Octotemnus dilutipes (Blackburn, 1891); Octotemnus walkeri Blair, 1940; Orthocis aequalis (Blackburn, 1888); Orthocis auriculariae Lawrence, 1991; Orthocis leanus (Blackburn, 1907); Xylographus bynoei Blair, 1940. The introduced species Cis chinensis Lawrence, 1991, and Orthocis auriculariae Lawrence, 1991, are recorded for the first time from Australia. The species Cis adelaidae Blackburn, 1888, is considered to be based on a mislabelled Hawaiian species near Cis setarius Sharp in Blackburn & Sharp, 1885. The name Cis sharpi Lawrence nom. nov. is proposed as a replacement name for another species in this Hawaiian group: Cis bimaculatus Sharp in Blackburn & Sharp, 1885, not Germain, 1855. Lectotypes are designated for Acanthocis armiger (Blair, 1940), Cis cavifrons Blair, 1940, Cis clarki Blair, 1940, Cis laminicollis Blair, 1940, Cis recurvatus Broun, 1883, Octotemnus walkeri Blair, 1940 and Orthocis leanus (Blackburn, 1907).

Trachelostenini sensu novo: redescriptions of Trachelostenus Solier, Myrmecodema Gebien and Leaus Matthews & Lawrence, based on adults and larvae, and descriptions of three new species of Leaus (Coleoptera: Tenebrionidae).

The former family Trachelostenidae is returned to tribal status in Tenebrionidae-Tenebrioninae and reconstituted to include Trachelostenus Solier, 1851 of southern Chile, currently in a separate family Trachelostenidae, Myrmecodema Gebien, 1943 of central Chile, currently in Stenochiinae-Cnodalonini, and Leaus Matthews & Lawrence, 1992 of eastern Australia, currently in Tenebrioninae-Titaenini. The three genera are redescribed in both the adult and larval stages. Three new species: Leaus tropicalis sp.n. L. monteithi sp. n. and L. elusus sp. n. are described. Trachelostenine larval characters are compared with those of related tribes of Tenebrioninae: Titaenini, Heleini, Helopini, Helopinini, Ulomini and Toxicini. The Chilean genus Homocyrtus Dejean is briefly discussed and left incertae sedis in Tenebrionidae. Examination of Lagriola Kirsch (Lagriinae), originally associated with Trachelostenus, leads to the following name changes: Lagriola Kirsch, 1873 = Paratenetus Spinola, 1844, syn. n.; Paratenetus operosus (Kirsch, 1873) (Lagriola), comb. n.; Paratenetus championi, nom. n. for P. denticulatus Champion, 1886 nec P. denticulatus (Kirsch, 1873) (Lagriola) comb. n.

Review of the genera of Mycetophagidae (Coleoptera: Tenebrionoidea) with descriptions of new genera and a world generic key.

The world genera of Mycetophagidae are reviewed and four new genera described. Several adult features of Mycetophagidae are discussed, and some newly discovered secondary sexual characters are described and illustrated. A key is given to the adults of all mycetophagid genera. The following new genera and species are proposed: Afrotyphaeola gen. n. (South Africa), A. natalensis sp. n. (South Africa), Neotriphyllus gen. n. (southwestern USA to Central America), Nototriphyllus gen. n. (New Zealand, Madagascar, Chile and Argentina), N. araucania sp. n. (Chile, Argentina), Zeclaviger gen. n. (New Zealand) and Z. explanatus sp. n. (New Zealand). The following synonymies are proposed: Litargus Erichson, 1846 (= Catopius Sharp, 1902) syn. n., Litargus balteatus LeConte, 1856 (= Triphyllus minor Lea, 1895) syn. n., Mycetophagus confusus Horn, 1878 (= Triphyllus perfectus Sharp, 1902) syn. n. The following new combinations are proposed: Litargops intricatus (Blackburn, 1891) (Triphyllus, Litargus) comb. n., L. multiguttatus (Lea, 1895) (Triphyllus, Litargus) comb. n., Litargus irregularis (Sharp) (Catopius) comb. n., Mycetophagus (Paralitargus) didesmus (Say) (Litargus) comb. n., Neotriphyllus confusus (Horn) (Mycetophagus) comb. n. Nototriphyllus aciculatus (Broun, 1880) (Cryptophagus) comb. n., N. adspersus (Broun, 1880) (Cryptophagus) comb. n., N. constans (Broun, 1914) comb. n., N. fuliginosus (Broun, 1880) (Cryptophagus) comb. n., N. hispidellus (Broun, 1880) (Cryptophagus) comb. n., N. integritus (Broun, 1893) comb. n., N. pubescens (Broun, 1909) comb. n., N. madagascariensis (Fairmaire, 1898) (Triphyllus) comb. n., N. punctulatus (Broun, 1880) (Cryptophagus) comb. n., N. rubicundus (Sharp, 1886) (Triphyllus) comb. n., N. serratus (Broun, 1880) (Cryptophagus) comb. n., N. substriatus (Broun, 1880) (Cryptophagus) comb. n. The larva of Nototriphyllus araucania is briefly described and compared with other known myceophagid larvae. The genus Nesolathrus Scott (1922), described in Latridiidae and considered incertae sedis in Mycetophagidae by Lawrence & Newton (1995), is placed in the subfamily Bergininae, following Lawrence & Slipinski (2013). The tribe Typhaeini Thomson (1863), as delimited by Nikitsky (1993), based on the lateral closure of the mesocoxal cavity by the mesoventrite and metaventrite, is considered to be non-monophyletic. Rhipidonyx adustus Reitter (1876), described in Mycetophagidae, is transferred to Tenebrionidae: Alleculinae, based on the description and examination of a specimen presumed to be the type.

Antillipeltis, a new genus of Antillean Trogossitidae (Coleoptera: Cleroidea) with a key to the Cleroidea.

Antillipeltis gen. nov. is described based on the following six new extant species and two new fossil species from Hispaniola and Puerto Rico: A. alleni sp. nov. (Dominican Republic, Miocene), A. darlingtoni sp. nov. (Haiti), A. iviei sp. nov. (Dominican Republic, Miocene), A. maculata sp. nov. (Dominican Republic), A. minuta sp. nov. (Dominican Republic), A. nitida sp. nov. (Puerto Rico), A. portoricensis sp. nov. (Puerto Rico), and A. pubescens sp. nov. (Dominican Republic). The genus is placed in Cleroidea, as currently delimited, based on the presence of a distinctive type of aedeagus occurring primarily in this superfamily, plus a combination of features excluding it from other cucujiform superfamilies. Within Cleroidea, the genus is tenatively placed in the family Trogossitidae and subfamily Lophocaterinae, but it differs from all other Trogossitidae in the presence of ventral membranous lobes with adhesive setae on tarsomeres 1-4 and in a combination of 9-segmented antennae, weak 3-segmented antennal club consisting of slightly elongate antenomeres, lack of postcoxal processes on the pronotal hypomera, and unique leg modifications. A key is provided for major groups of Cleroidea and all described genera of Peltinae and Lophocaterinae, with the exception of Rentoniini, based in part on the literature and in part on dissections of adult males. Antillipeltis is one of three endemic West Indian genera of Coleoptera that is both extant and known from Dominican amber.

Lectotype designations and nomenclatural changes in Xylographus Mellié (Coleoptera, Ciidae).

We designate lectotypes and propose nomenclatural changes in Xylographus Mellié (Coleoptera, Ciidae) based on type specimens deposited in the Museum of Comparative Zoology (USA), Museum für Naturkunde Berlin (Germany), the Natural History Museum (UK), Muséum d'Histoire Naturelle de la Ville de Genève (Switzerland), Muséum National d'Histoire Naturelle (France), Naturhistoriska Riksmuseet (Sweden) and Naturhistorisches Museum Wien (Austria). We designate lectotypes for the following species: Cis fultoni Broun, 1886, Xylographus anthracinus Mellié, 1849, X. bicolor Pic, 1916, X. brasiliensis Pic, 1916, X. ceylonicus Ancey, 1876, X. contractus Mellié, 1849, X. corpulentus Mellié, 1849, X. dentatus Pic, 1922, X. gibbus Mellié, 1849, X. hypocritus Mellié, 1849, X. javanus Pic, 1937, X. lemoulti Pic, 1916, X. longicollis Pic, 1922, X. madagascariensis Mellié, 1849, X. nitidissimus Pic, 1916, X. perforatus Gerstaecker, 1871, X. porcus Gorham, 1886, X. punctatus Mellié, 1849, X. ritsemai Pic, 1921, X. rufescens Pic, 1921, X. rufipennis Pic, 1934, X. rufipes Pic, 1930, X. seychellensis Scott, 1926, X. subopacus Pic, 1929, X. subsinuatus Pic, 1916, X. suillus Gorham, 1886, X. testaceitarsis Pic, 1916 and X. tomicoides Reitter, 1902. We propose the following syn. n. (senior synonym listed first): X. anthracinus = X. testaceitarsis, X. brasiliensis = X. lucasi Lopes-Andrade & Zacaro, X. corpulentus = X. lemoulti and X. richardi Mellié, X. madagascariensis = X. eichelbaumi Reitter, X. rufipennis, X. seychellensis Scott and X. tarsalis Fåhraeus, X. nitidissimus = X. longicollis, X. subsinuatus = X. rufescens. We exclude three species from Xylographus: Cis renominatus, nom. n. (for X. dentatus Pic, 1922, not C. dentatus Mellié, 1849), Paratrichapus fultoni (Broun, 1886), comb. n. and P. javanus (Pic, 1937), comb. n.

Loranthophila, a new genus of Australian Lyctinae (Coleoptera: Bostrichidae) associated with Mistletoe.

Loranthophila gen. n. is described, based on Minthea acanthacollis (Carter & Zeck), and comparisons are made between this genus and other members of the bostrichid subfamily Lyctinae.

The Australian Byrrhinae (Coleoptera: Byrrhidae) with descriptions of new genera and species.

The generic classification of the Australian Byrrhinae is revised and the following new genera are described: Notolioon gen. n., Nothochaetes gen. n., Idiothrix gen. n., Akidomorychus gen. n., Brachybyrrhulus gen. n. and Pseudomorychus gen. n. A key is provided for the genera of Australian Byrrhidae. The following new combinations are proposed: Notolioon atronitens (Lea 1920) comb. n., N. bryophagus (Lea 1907) comb. n., N. carissimus (Lea 1907). comb. n., N. dives (Lea 1907) comb. n., N. gemmatus (Lea 1920) comb. n., N. globosus (Wilson 1921) comb. n., N. griffithi (Lea 1907) comb. n., N. maculatipes (Lea 1920) comb. n., N. multicolor (Lea 1907) comb. n., N. nodipennis (Lea 1920) comb. n., N. simplicicornis (Lea 1907) comb. n., N. viridinitens (Lea (1920). comb. n., Nothochaetes fasciculatus (Lea 1920) comb. n., Idiothrix carinaticeps (Lea 1920) comb. n., Akidomorychus comatus (Oke 1932) comb. n., A. polychromus (Lea 1920) comb. n., A. raucus (Blackburn 1891) comb. n., A. venustus (Wilson 1921) comb. n., Brachybyrrhulus discicollis (Lea 1920) comb. n., Pseudomorychus torrensensis (Blackburn 1889) comb. n., P. mixtus (Lea 1907) comb. n. The following new species are described: Notolioon cardamine sp. n., Nothochaetes howensis sp. n. and Brachybyrrhulus malleecola sp. n.