Redescription of the enigmatic myriapod Hanseniellachilensis (Hansen, 1903) (Symphyla, Scutigerellidae) based on scanning electron microscope images of Chilean specimens.

Hanseniellachilensis is the only myriapod of the class Symphyla known from Chile. This garden centipede, or pseudocentipede, was described more than 120 years ago based on morphologically incomplete specimens collected in central Chile, a well-known biodiversity hotspot. In this study, we redescribe this species based on morphologically complete specimens collected near the type locality using scanning electron microscope images. Our study provides the description of diagnostic characters hitherto unknown in this species such as macrochaetae of the tergites and spinnerets of the cerci. We also include a new record from central Chile and discuss the presumed presence of this species in Argentina and Madagascar.

So far from home: first record of Chondromorpha xanthotricha (Diplopoda: Polydesmida: Paradoxosomatidae) in the Brazilian Amazon / Tão longe de casa: primeiro registro de Chondromorpha xanthotricha (Diplopoda: Polydesmida: Paradoxosomatidae) para a Amazônia brasileira

The millipede Chondromorpha xanthotricha, supposedly native to Sri Lanka and southern India, is considered a pantropical species occurring in Southeast Asia, North America, Mesoamerica, the Caribbean, Central America and northern South America. Here we report the first record of this species for Brazil, in the central Amazon region of the country, with taxonomic notes and images of male and female specimens.(AU)

O diplópode Chondromorpha xanthotricha, supostamente nativo do Sri Lanka e sul da Índia, é considerado uma espécie pantropical com ocorrência no Sudeste Asiático, América do Norte, Mesoamérica, Caribe, América Central e norte da América do Sul. Aqui nós reportamos o primeiro registro dessa espécie para o Brasil, na região central da Amazônia brasileira, com notas taxonômicas e ilustrações de espécimes macho e fêmea.(AU)

Six new species of Aphilodon centipedes (Geophilidae: Aphilodontinae) from Brazil

After recent sampling in the Southeast and Northeast of Brazil, six new species of Aphilodon are described and illustrated based on males and females. From the Atlantic Forest biome, Aphilodon foraminis n. sp., A. aiuruocae n. sp., A. acutus n. sp. and A. rectitibia n. sp. were registered in the state of Rio de Janeiro. Aphilodon cangaceiro n. sp. is the first record of Aphilodontinae for the state of Piauí and was sampled in the Caatinga biome. Aphilodon bahianus n. sp. is the first species of Aphilodontinae known for the state of Bahia, being registered from the Atlantic Forest and in the Caatinga biomes. Additionally, some morphological characteristics of all known species of Aphilodon and their distributions are compared.

A new species of Mecophilus (Geophilidae: Aphilodontinae), with the first report of the genus from the state of Rio de Janeiro, Brazil

Mecophilus carioca n. sp. is described based on males and females recently sampled in the Parque Nacional de Itatiaia, and is the first record of the genus from the state of Rio de Janeiro, Brazil. The specimens were analyzed in both light microscopy and scanning electron microscopy, and photos and schematic illustrations are provided. The known distribution of the three species of Mecophilus are presented in a map.

Cladistic analysis and taxonomic review of the millipede tribe Arthrosolaenomeridini Hoffman, 1976 (Polydesmida: Chelodesmidae)

Chelodesmidae is one of the most diverse families belonging to the Polydesmida, comprising almost 800 described species distributed in 172 genera, 20 tribes and two subfamilies. Among the tribes within the Neotropical subfamily Chelodesminae, Arthrosolaenomeridini represents a very interesting group occurring in the Central-West region of Brazil. Currently the tribe contains three genera: Arthrosolaenomeris Schubart, 1943, Gangugia Schubart, 1947, and Angelodesmus Schubart, 1962. In this study, we conducted a cladistic analysis including 18 species of Arthrosolaenomeridini and 7 species of other associated Chelodesminae tribes as an outgroup. The matrix is composed of 64 morphological characters from which 39 are herein proposed for the first time. The data were analyzed under the parsimony criterion using TNT 1.5. Based on the results, Arthrosolaenomeridini was recovered as monophyletic with Macrocoxodesmini + Telonychopodini as sister group. Arthrosolaenomeris Schubart, 1943 and Gangugia Schubart, 1947 were recovered as monophyletics. The genus Angelodesmus Schubart, 1962 was recovered as paraphyletic and redefined as monotypic. The tribe is now composed of the genera Arthrosolaenomeris (6 spp.), Gangugia (6 spp.), Angelodesmus (monotypic), Abiliodesmus n. gen. (4 spp.) and Folcloredesmus n. gen. (monotypic). In addition, we conduct a taxonomic revision of the tribe Arthrosolaenomeridini providing detailed redescriptions, drawings, and distribution maps for all species and genera, including the two new genera and the ten new species proposed: Arthrosolaenomeris saci n. sp.; A. curupira n. sp.; A. caipora n. sp.; A. iara n. sp.; Gangugia boitata n. sp.; G. cuca n. sp.; G. boto n. sp.; G. mula n. sp.; Abiliodesmus mapinguari n. sp. and Folcloredesmus thomasi n. sp. Furthermore, we include an identification key to all the genera and species.

On the identity of the centipede Sogona cyclareata Attems, 1947 (Geophilomorpha, Geophilidae).

The type material of Sogona cyclareata Attems, 1947 is revised. The syntype shares characters with representatives of the family Schendylidae and not the Geophilidae to which it is currently assigned. The species has the claw of the second maxillae pectinate and the labrum not divided into median and lateral portions. Sogona cyclareata presents also characters of the genus Schendylops Cook, 1899 such as the presence of two pores in each coxopleuron, ultimate legs without claws, and the arrangement of the sternal pores-fields. No Schendylops species known to date has the characters of S. cyclareata, so we propose the new combination Schendylops cyclareatus.

A new centipede Schendylops Cook from eastern Brazil: the first troglobitic geophilomorph for South America (Geophilomorpha, Schendylidae).

Schendylops janelao sp. n. is described from a limestone cave located in eastern Brazil. There are several reports of geophilomorphs in Brazilian caves, however, the new species represents the first troglobite species for South America and the first for Gruta do Janelão Cave, northern Minas Gerais State. Schendylops janelao sp. n. is described based on a male specimen and differs from its congeners by a combination of 10 characters. We discuss the character-states related to subterranean life and the conservation status of the species.

Check list of the Venezuelan millipedes species.

Here we provide a checklist of millipedes described or recorded in the literature from Venezuela. The diplopod fauna is comprised of eight orders, 18 families, 54 genera, and 157 species. The millipede orders Glomerida, Chordeumatida, Julida, Siphoniulida, and Platydesmida (known elsewhere in the Western Hemisphere) are not, as of yet, reported from the Venezuelan fauna. Two widely distributed invasive species, Asiomorpha coarctata and Oxidus gracilis, were recorded from Venezuela. All species records listed here contain comprehensive citation and synonymy lists. Numerous locality data are questionable and are discussed. For most species, the supposed deposition of the type specimens is given. However, the museum and gender information is taken mostly from the literature as the type specimen themselves were not examined. An analysis of records extracted from GBIF in 2016 and in 2018 was conducted and compared to the data captured from the published taxonomic literature. The data in this checklist are summarized online at the MilliBase website.

Taxonomic revision of the "mexicanus" group of the genus Vaejovis C. L. Koch, 1836 (Scorpiones: Vaejovidae).

Within the scorpion genus Vaejovis C.L. Koch, the "mexicanus" group is composed of species distributed in the mountains of México. This group presents taxonomic problems, because its characterization and the species included in the group have varied through the years. In the present work, we redefine this group based on several morphological characters, and we differentiate it from the other two species groups within the genus: "vorhiesi" and "nit dulus+nigrescens". Additionally, five new species are described: Vaejovis ceboruco sp. nov., Vaejovis nanchititla sp. nov., Vaejovis santibagnezi sp. nov., Vaejovis talpa sp. nov. and Vaejovis tapalpa sp. nov; the males of three species are described for the first time (V. dugesi, V. nigrofemoratus and V. tesselatus); and the updated diagnosis for all species is included. Keys for the identification of males and females of the 30 species included in this group are given. Lastly, notes on the natural history and distribution of some species are provided, with maps of known distribution for all the species.

First report of a blue hue Schendylops (Geophilomorpha, Schendylidae), with a description of a new species from Southeastern Brazil.

The first report of a blue colored body in schendylid specimens is presented based on a description of Schendylops turmalina sp. nov. recorded from Southeastern Brazil. The female holotype is described and illustrated, and the variations observed in male paratypes and in a juvenile male from the same locality are given. The new species is characterized by having adults with an uninterrupted series of sternal pore-fields, from the first to the penultimate leg-bearing segments, undivided on the anterior and posterior part of the body and divided into two sub-symmetrical areas in the middle region. This characteristic can also be observed in Schendylops tropicus, S. coscaroni, S. parahyhae, S. inquilinus, S. grismadoi and S. demelloi. However, in addition to the blue hue present between the first and ultimate leg-bearing segments, S. turmalina sp. nov. differs from all the aforementioned species in having the following unique characteristics: antennae less than 2.5 times the length of the cephalic plate in both male and female; posterior margin of mid-part of labrum near-straight; forcipular tarsungulum with the internal edge serrate; tarsus 2 of the ultimate pair of legs with an apical tubercle which has two pore-like sensilla and is surrounded by two larger sensilla.

Revision of the Neotropical species of Aphilodontinae (Geophilomorpha, Geophilidae), with eight new species and a first phylogenetic analysis of the subfamily.

Aphilodontinae are a well distinct but poorly known group of soil centipedes (Chilopoda: Geophilomorpha: Geophilidae) inhabiting two disjunct areas in South America and South Africa respectively. A comprehensive revision of the Neotropical species is presented based on the examination of >150 specimens, the phylogenetic analysis of the entire subfamily based on 47 morphological characters, and the description of eight new species from Southeastern Brazil. The Aphilodontinae were confirmed a monophyletic clade within Geophilidae and closely related to Geoperingueyia, with which they share synapomorphic characters in the labrum, second maxillae and forcipules. Particular groups of clypeal setae, inconspicuous lateral parts of labrum and coalescent forcipular throchanteroprefemur and femur were recovered as synapomorphies of the Aphilodontinae. Four monophyletic genera are recognized within the subfamily Aphilodontinae Silvestri, 1909 (1908) (= Brasilophilidae Verhoeff, 1908; = Mecistaucheninae Verhoeff, 1925 n. syn.), three exclusively Neotropical and one exclusively South African. The Neotropical genera are: Aphilodon Silvestri, 1898 (= Mecistauchenus Brölemann, 1907 n. syn.; = Brasilophilus Verhoeff, 1908 n. syn.), with ten species (including A. caboclos n. sp., A. indespectus n. sp., A. meganae n. sp., A. pereirai n. sp. and A. silvestrii n. sp.), characterized by a small terminal spine on the ultimate legs, in both males and females; Mecophilus Silvestri, 1909, with two species (including M. tupiniquim n. sp.), characterized by elongated forcipular segment and first leg-bearing segment; Mairata n. gen., with two species (M. butantan n. sp. and M. itatiaiensis n. sp.), characterized by the partial reduction of the distal article of the second maxillary telopodite and a particular shape of ultimate legs, in both males and females. The South African genus, Philacroterium Attems, 1926, comprises eleven known species (including P. weberi (Silvestri, 1909) n. comb., P. caffrarium (Verhoeff, 1937) n. comb., P. porosum (Verhoeff, 1937) n. comb., P. brevipes (Verhoeff, 1938) n. comb., P. bidentatum (Lawrence, 1955) n. comb., P. longipes (Lawrence, 1955) n. comb., P. macronyx (Lawrence, 1955) n. comb., P. maritimum (Lawrence, 1963) n. comb., P. pauciporum (Lawrence, 1963) n. comb. and P. transvaalicum (Lawrence, 1963) n. comb.) and is characterized by vestigial lateral parts of the labrum and the complete suppression of the distal article of the telopodites of the second maxillae. Identification keys are provided for the Aphilodontinae genera and for the species of Aphilodon, Mecophilus and Mairata n. gen. The known occurrence of Aphilodon in Brazil is extended from the states of São Paulo and Mato Grosso to the states of Minas Gerais and Rio de Janeiro, that of Mecophilus from the state of Paraná to the state of São Paulo.

Revision of the Neotropical species of Aphilodontinae (Geophilomorpha, Geophilidae), with eight new species and a first phylogenetic analysis of the subfamily

Aphilodontinae are a well distinct but poorly known group of soil centipedes (Chilopoda: Geophilomorpha: Geophilidae) inhabiting two disjunct areas in South America and South Africa respectively. A comprehensive revision of the Neotropical species is presented based on the examination of >150 specimens, the phylogenetic analysis of the entire subfamily based on 47 morphological characters, and the description of eight new species from Southeastern Brazil. The Aphilodontinae were confirmed a monophyletic clade within Geophilidae and closely related to Geoperingueyia, with which they share synapomorphic characters in the labrum, second maxillae and forcipules. Particular groups of clypeal setae, inconspicuous lateral parts of labrum and coalescent forcipular throchanteroprefemur and femur were recovered as synapomorphies of the Aphilodontinae. Four monophyletic genera are recognized within the subfamily Aphilodontinae Silvestri, 1909 (1908) (= Brasilophilidae Verhoeff, 1908; = Mecistaucheninae Verhoeff, 1925 n. syn.), three exclusively Neotropical and one exclusively South African. The Neotropical genera are: Aphilodon Silvestri, 1898 (= Mecistauchenus Brölemann, 1907 n. syn.; = Brasilophilus Verhoeff, 1908 n. syn.), with ten species (including A. caboclos n. sp., A. indespectus n. sp., A. meganae n. sp., A. pereirai n. sp. and A. silvestrii n. sp.), characterized by a small terminal spine on the ultimate legs, in both males and females; Mecophilus Silvestri, 1909, with two species (including M. tupiniquim n. sp.), characterized by elongated forcipular segment and first leg-bearing segment; Mairata n. gen., with two species (M. butantan n. sp. and M. itatiaiensis n. sp.), characterized by the partial reduction of the distal article of the second maxillary telopodite and a particular shape of ultimate legs, in both males and females. The South African genus, Philacroterium Attems, 1926, comprises eleven known species (including P. weberi (Silvestri, 1909) n. comb., P. caffrarium (Verhoeff, 1937) n. comb., P. porosum (Verhoeff, 1937) n. comb., P. brevipes (Verhoeff, 1938) n. comb., P. bidentatum (Lawrence, 1955) n. comb., P. longipes (Lawrence, 1955) n. comb., P. macronyx (Lawrence, 1955) n. comb., P. maritimum (Lawrence, 1963) n. comb., P. pauciporum (Lawrence, 1963) n. comb. and P. transvaalicum (Lawrence, 1963) n. comb.) and is characterized by vestigial lateral parts of the labrum and the complete suppression of the distal article of the telopodites of the second maxillae. Identification keys are provided for the Aphilodontinae genera and for the species of Aphilodon, Mecophilus and Mairata n. gen. The known occurrence of Aphilodon in Brazil is extended from the states of São Paulo and Mato Grosso to the states of Minas Gerais and Rio de Janeiro, that of Mecophilus from the state of Paraná to the state of São Paulo.

A review of the millipede genus Rupidesmus Schubart, 1952 (Polydesmida: Chelodesmidae).

The chelodesmid genus Rupidesmus Schubart, 1952 is revised. Currently, the genus contains only Rupidesmus ruber Schubart, 1952, herein redescribed, and the new species Rupidesmus aclys n. sp., added. A revised diagnosis for the genus and a distribution map for the two species are provided.

Xanthotropis, a new genus in the Neotropical millipede subfamily Aphelidesminae (Diplopoda, Polydesmida, Aphelidesmidae).

The monotypic taxon Xanthotropis n. gen. is established to accommodate Haematotropis media Golovatch, Hoffman Spelda, 2004, known only from the vicinity of Manaus, Brazil, as it is incompatible with both its originally assigned genus and Aphelidesmus Brölemann, 1898, a suggested alternative. Xanthotropis is defined primarily by minute teeth on paranota 2-4, a sublinear posterior margin of the telson, and an elongated, distally expanded/laminate acropodite. The Aphelidesmidae Brölemann, 1916, range from northeastern Mexico and Tobago to northern Brazil and southwestern Peru; a questionable more-northerly record, from Monterey, Mexico, requires verification with fresh material. One of two families of the polydesmidan superfamily Platyrhacoidea (Leptodesmidea), Aphelidesmidae comprises two subfamilies, the nominate and Amplininae Hoffman, 1954. The latter has been addressed by several authors, and we here review Aphelidesminae by providing full synonymies, a literature review, and a key to its four genera: Aphelidesmus Brölemann, 1898; Haematotropis and Ochrotropis, both by Jeekel, 2000; and Xanthotropis n. gen.

Taxonomic reassessment and redescription of Scolopendra arthrorhabdoides Ribaut, 1913, with a discussion on its related species (Scolopendromorpha, Scolopendridae).

Scolopendra arthrorhabdoides Ribaut, 1913 is redescribed based on fresh material. Its taxonomic status is evaluated and compared with Scolopendra armata Kraepelin, 1903 and Scolopendra alternans Leach, 1816. The geographical distribution of S. arthrorhabdoides is also revised. Scolopendra armata is reported from Colombia for the first time.

The centipede family Anopsobiidae new to North America, with the description of a new genus and species and notes on the Henicopidae of North America and the Anopsobiidae of the Northern Hemisphere (Chilopoda, Lithobiomorpha).

Speleopsobius weaveri, n. gen., n. sp., is described from lava tubes in southern Idaho, USA. The new taxon, and species of the genera Buethobius Chamberlin, 1911 and its probable synonym Yobius Chamberlin, 1945, are members of the family Anopsobiidae, not previously reported from North America. All known species of Henicopidae and Anopsobiidae from North America north of México are listed and briefly noted, along with all known anopsobiids from the northern hemisphere. Anopsobiella dawidoffi Attems, 1938 (Vietnam) is likely not a member of the family Anopsobiidae.

A contribution to the knowledge of scolopendromorph centipedes of Martinique Island, with descriptions of two new species (Chilopoda: Scolopendromorpha).

The paper provides new data on seven scolopendromorph centipede species collected in Martinique Island. Two new species are described: Otostigmus (Parotostigmus) salticus n. sp. and Cryptops (Trigonocryptops) martinicensis n. sp.; their systematic position is discussed. Notes on the system of subgenus Trigonocryptops Verhoeff, 1906 are given and Cryptops sarasini var. furcata Ribaut, 1923 is confirmed as subspecies. Cormocephalus guildingii Newport, 1845, Newportia longitarsis guadeloupensis Demange, 1981 and N. pusilla Pocock, 1893 are reported from Martinique for the first time. A list of the Scolopendromorpha of this island is given.

A new distinctive species of Barydesmus (Diplopoda, Polydesmida, Platyrhacidae) from Ecuador, with an annotated bibliographical checklist of the American Platyrhacidae.

Currently with 85 named species, the family Platyrhacidae in America is still poorly studied, particularly regarding Barydesmus Cook, 1896, the most diversified among the American genera. The center of diversification of Barydesmus lies in the northern third of the Andes Mountains, a megadiverse region where surely more species of these large, conspicuous diplopods await description. Here we present a new species, Barydesmus nangaritza sp. nov., easily diagnosable by the shape of the paranota, unique among the American Platyrhacidae. We provide also an updated bibliographical, annotated checklist of the whole family in America, with the aim of encouraging further studies in the group. The checklist includes the following new combinations under the genus Barydesmus: Barydesmus acanthopleurus (Hoffman, 1960) comb. nov., B. acanthosternus (Brölemann, 1900) comb. nov., B. acompus (Chamberlin, 1941) comb. nov., B. aequinoctius (Attems, 1914) comb. nov., B. affinis (Brölemann, 1919) comb. nov., B. andinus (Cook, 1896) comb. nov., B. azulae (Kraus, 1956) comb. nov., B. balsapuertus (Chamberlin, 1941) comb. nov., B. bifasciatus (Silvestri, 1897) comb. nov., B. bombonus (Chamberlin, 1941) comb. nov., B. broelemanni (Attems, 1914) comb. nov., B. brunnior (Chamberlin, 1941) comb. nov., B. celinus (Chamberlin, 1941) comb. nov., B. chuncho (Chamberlin, 1941) comb. nov., B. clathratus (Gervais, 1847) comb. nov., B. comptus Cook, 1896 comb. nov., B. contayus (Chamberlin, 1941) comb. nov., B. dunalii (Gervais, 1847) comb. nov., B. exsul (Cook, 1896) comb. nov., B. festae (Silvestri, 1897) comb. nov., B. fuscatus (Chamberlin, 1941) comb. nov., B. helophorus (Attems, 1899) comb. nov., B. incus (Chamberlin, 1941) comb. nov., B. javarynus (Schubart, 1950) comb. nov., B. leucus (Chamberlin, 1941) comb. nov., B. loretus (Chamberlin, 1941) comb. nov., B. manserichus (Chamberlin, 1941) comb. nov., B. medius (Chamberlin, 1941) comb. nov., B. obscurus (Kraus, 1955) comb. nov., B. orellanus (Chamberlin, 1941) comb. nov., B. pococki (Brölemann, 1911) comb. nov., B. retentus (Chamberlin, 1941) comb. nov., B. riparius (Carl, 1902) comb. nov., B. rufipes (Koch, 1847) comb. nov., B. scaber (Koch, 1847) comb. nov., B. socius (Chamberlin, 1941) comb. nov., B. strenuus (Silvestri, 1897) comb. nov., B. tambonus (Chamberlin, 1952) comb. nov., B. tapichus (Chamberlin, 1941) comb. nov., B. trichotypus (Chamberlin, 1941) comb. nov., B. utoquinius (Chamberlin, 1941) comb. nov. and B. zygethus (Chamberlin, 1941) comb. nov.

A new high-altitude species of centipede from the Andes of Ecuador (Chilopoda, Geophilomorpha, Schendylidae).

Pectiniunguis aequatorialis sp. nov. (Chilopoda: Geophilomorpha: Schendylidae) is described and illustrated on the basis of specimens collected in the Cayambe-Coca Ecological Reserve in the High Andes of Ecuador. The new species is characterized by having ventral pore-fields on the anterior region of the trunk only, a trait that is shared by a single Neotropical congener: Pectiniunguis ascendens Pereira, Minelli Barbieri, 1994 to which it is similar and is compared taxonomically. This is only the second report of a species of the genus Pectiniunguis Bollman, 1889 from mainland Ecuador. The other taxon is Pectiniunguis roigi Pereira, Foddai Minelli, 2001, so far only known from the type locality, Limoncocha (Sucumbíos Province), and herein reported for the first time from Parque Nacional Sumaco Napo-Galeras (Napo Province).

A review of Newportia species in the subgenus Newportides Chamberlin, 1921 (Scolopendromorpha, Scolopocryptopidae, Newportiinae).

Five Newportia species with a claw-shaped pretarsus of the ultimate legs are revised. Newportia amazonica Brolemann, 1904, N. unguifer Chamberlin, 1921, and N. pilosa González-Sponga, 1997 are redescribed; N. tetraspinae González-Sponga, 1997 is considered to be a junior synonym of N. unguifer, and N. guaiquinimensis González-Sponga, 2000 is considered to be a junior synonym of N. pilosa. All synonyms proposed are based on the structure of ultimate legs. The subgenus Newportides is revalidated based on the presence of claw-shaped pretarsus of ultimate legs.