New species and newly recorded species of Anisandrus Ferrari, 1867 ambrosia beetles from Thailand (Coleoptera, Curculionidae, Scolytinae, Xyleborini).

Five new species, Anisandrusmontanussp. nov., A.phithakpasp. nov., A.tanaosisp. nov., A.tritonsp. nov., and A.uniseriatussp. nov. are described from Thailand. Anisandruscarinensis (Eggers, 1923) is reported from Thailand for the first time and A.apicalis is removed from the Thai fauna. With the inclusion of the species described and recorded here, the diversity of Anisandrus is increased to 40 species, of which 11 occur in Thailand. A synoptic list and a key to the Anisandrus of Thailand are presented.

The tribal placement of Urocorthylus Petrov, Mandelshtam & Beaver, with a description of the male of U. hirtellus Petrov et al., and notes on its biology (Coleoptera: Curculionidae: Scolytinae).

We show, using molecular data, that the enigmatic genus Urocorthylus Petrov, Mandelshtam & Beaver from Southeast Asia belongs in the scolytine tribe, Dryocoetini, and not in the almost wholly American tribe Corthylini, where it was originally placed. The male of Urocorthylus hirtellus Petrov, Mandelshtam & Beaver is described and figured for the first time, and new records from China are presented. Urocorthylus hirtellus is a bark beetle, and not an ambrosia beetle as originally hypothesised. Keys are provided to the genus within the Dryocoetini, and to the two species included in the genus.

 Tricosauniseriata, a new species of xyleborine ambrosia beetle from Thailand (Coleoptera, Curculionidae, Scolytinae, Xyleborini).

A new species, Tricosauniseriatasp. nov., is described here. A list of Tricosa species found in Thailand with distributions and an updated key to Tricosa are also provided.

New species, taxonomic changes and newly recorded species of Webbia Hopkins, ambrosia beetles from Thailand and neighbouring countries (Coleoptera: Curculionidae: Scolytinae: Xyleborini).

Four new species, Webbia aculeata Sittichaya, Smith & Beaver sp. nov., Webbia granulosa Sittichaya, Smith & Beaver sp. nov., Webbia planicauda Beaver, Sittichaya & Smith sp. nov., and Webbia spinosulcata Sittichaya, Smith & Beaver sp. nov., are described. Arixyleborus dissimilis (Eggers, 1923), and Arixyleborus orbiculatus (Eggers, 1923) are transferred to Webbia. Two new synonyms and a new combination are proposed: Webbia dissimilis (Eggers, 1923) comb. nov. (=Webbia costulatula Schedl, 1953 syn. nov.); Webbia hatanakai Browne, 1986 (=Webbia turbinata Maiti & Saha, 1986 syn. nov.). A lectotype is designated for Webbia orbiculata (Eggers, 1923) comb. res.. Three species, Webbia bituberculata (Browne, 1977), Webbia subuculae (Browne, 1962), and Webbia suturalis Browne, 1955 are recorded in Thailand for the first time. With the inclusion of the Webbia species described and recorded herein, the diversity of Webbia is increased to 41 species. A key is given to the 16 species recorded from Thailand.

New species and new records of Amasa Lea, 1894 ambrosia beetles from Thailand (Coleoptera: Curculionidae: Scolytinae: Xyleborini).

Three new species, Amasa beaveri sp. nov., Amasa cognatoi sp. nov., and Amasa macarthorum sp. nov., are described. Three species, Amasa circumcisula (Schedl, 1954), Amasa dasyura (Browne, 1950) and Amasa latetruncata (Schedl, 1942), are recorded in Thailand for the first time. A synoptic list of the Thai fauna with distributions is also provided.

Preinvasion Assessment of Exotic Bark Beetle-Vectored Fungi to Detect Tree-Killing Pathogens.

Exotic diseases and pests of trees have caused continental-scale disturbances in forest ecosystems and industries, and their invasions are considered largely unpredictable. We tested the concept of preinvasion assessment of not yet invasive organisms, which enables empirical risk assessment of potential invasion and impact. Our example assesses fungi associated with Old World bark and ambrosia beetles and their potential to impact North American trees. We selected 55 Asian and European scolytine beetle species using host use, economic, and regulatory criteria. We isolated 111 of their most consistent fungal associates and tested their effect on four important southeastern American pine and oak species. Our test dataset found no highly virulent pathogens that should be classified as an imminent threat. Twenty-two fungal species were minor pathogens, which may require context-dependent response for their vectors at North American borders, while most of the tested fungi displayed no significant impact. Our results are significant in three ways; they ease the concerns over multiple overseas fungus vectors suspected of heightened potential risk, they provide a basis for the focus on the prevention of introduction and establishment of species that may be of consequence, and they demonstrate that preinvasion assessment, if scaled up, can support practical risk assessment of exotic pathogens.

Review of the millipede genus Malayorthomorpha Mrsic, 1996 (Diplopoda, Polydesmida, Paradoxosomatidae), with descriptions of two new species from Thailand and a key to its species.

The millipede genus Malayorthomorpha Mrsic, 1996, so far monospecific and previously known only from Park Belum, Perak State, northern Malaysia, is recorded from a mountain in Betong District, Yala Province, southern Thailand for the first time, being represented there by two new species: M.halabala sp. nov. and M.hulutbeeda sp. nov. Both new species are found to occur syntopically and can be assumed as narrowly endemic to the Titiwangsa Mountain Range which begins in southern Thailand, crosses the Malaysian border, and extends into east and west coast regions of the Malay Peninsula. In addition, the generic diagnosis is slightly updated, and a key to all three species is provided.

One hundred eighteen taxonomic changes among Xyleborine ambrosia beetles (Coleoptera: Curculionidae: Scolytinae).

An ongoing study of the ambrosia beetle tribe Xyleborini has resulted in numerous taxonomic changes mostly representing new generic/species combinations which remove species from the once all-encompassing Xyleborus Eichhoff, 1864 to other genera based on revised taxonomic concepts. These changes are here listed. Terminalinus Hopkins, 1915 is removed from synonymy with Cyclorhipidion Hagedorn, 1912 and reinstated as a valid genus. Five species are removed from synonymy and reinstated as valid species: Amasa brevipennis (Schedl, 1971), Amasa fulgens (Schedl, 1975), Ambrosiophilus immitatrix (Schedl, 1975), Ambrosiophilus semirufus (Schedl, 1959), Microperus leprosulus (Schedl, 1936). The following 97 new or restored combinations are proposed: Ambrosiophilus bispinosulus (Schedl, 1961) comb. nov., Ambrosiophilus compressus (Lea, 1894) comb. nov., Ambrosiophilus latecompressus (Schedl, 1936) comb. nov., Ambrosiophilus pertortuosus (Schedl, 1942) comb. nov., Ambrosiophilus tomicoides (Eggers, 1923) comb. nov., Ambrosiophilus tortuosus (Schedl, 1942) comb. nov., Euwallacea obliquecauda (Motschulsky, 1863) comb. nov., all from Ambrosiodmus Hopkins, 1915; Coptodryas decepta (Schedl, 1979) comb. nov., Microperus pusillus (Eggers, 1927) comb. nov., both from Arixyleborus Hopkins, 1915; Coptodryas pseudopunctula (Schedl, 1942) comb. nov., from Cnestus Sampson, 1911; Microperus abbreviatus (Schedl, 1942) comb. nov., Microperus amphicauda (Browne, 1986) comb. nov., Microperus borneensis (Browne, 1986) comb. nov., Microperus comptus (Sampson, 1919) comb. nov., Microperus gorontalosus (Schedl, 1939) comb. nov., Microperus pullus (Schedl, 1952) comb. nov., Microperus tenellus (Schedl, 1959) comb. nov., Microperus vafer Schedl, 1957 comb. nov., all from Coptodryas Hopkins, 1915; Ambrosiophilus pityogenes (Schedl, 1936) comb. nov., Arixyleborus scapularis (Schedl, 1942) comb. nov., Beaverium dihingicum (Wood, 1992) comb. nov., Beaverium rufonitidus (Schedl, 1951) comb. nov., Coptodryas brevior (Eggers) comb. nov., Terminalinus dipterocarpi Hopkins, 1915 comb. res., Terminalinus sexspinatus (Schedl, 1935) comb. nov., Terminalinus terminaliae (Hopkins, 1915) comb. res., Truncaudum leverensis (Browne, 1986) comb. nov., all from Cyclorhipidion Hagedorn, 1912; Planiculus kororensis (Wood, 1960) comb. nov., Planiculus loricatus (Schedl, 1933) comb. nov., Planiculus murudensis (Browne, 1965) comb. nov., all from Euwallacea Reitter, 1915; Terminalinus anisopterae (Browne, 1983) comb. nov., Terminalinus indigens (Schedl, 1955) comb. nov., Terminalinus macropterus (Schedl, 1935) comb. nov., Terminalinus major (Stebbing, 1909) comb. nov., Terminalinus pilifer (Eggers, 1923) comb. nov., Terminalinus posticepilosus (Schedl, 1951) comb. res., Terminalinus pseudopilifer (Schedl, 1936) comb. nov., Terminalinus sulcinoides (Schedl, 1974) comb. nov., all from Fortiborus Hulcr & Cognato, 2010; Microperus micrographus (Schedl, 1958) comb. nov., Microperus truncatipennis (Schedl, 1961) comb. nov., both from Xyleborinus Reitter, 1913; Ambrosiophilus immitatrix (Schedl, 1975) comb. nov., Ambrosiophilus semirufus (Schedl, 1959) comb. nov., Arixyleborus crenulatus (Eggers, 1920) comb. nov., Arixyleborus strombosiopsis (Schedl, 1957) comb. nov., Beaverium batoensis (Eggers, 1923) comb. nov., Beaverium calvus (Schedl, 1942) comb. nov., Beaverium obstipus (Schedl, 1935) comb. nov., Beaverium rufus (Schedl, 1951) comb. nov., Coptodryas cuneola (Eggers, 1927) comb. nov., Cyclorhipidion amanicum (Hagedorn, 1910) comb. nov., Cyclorhipidion impar (Eggers, 1927) comb. nov., Cyclorhipidion inaequale (Schedl, 1934) comb. nov., Cyclorhipidion kajangensis (Schedl, 1942) comb. nov., Cyclorhipidion obiensis (Browne, 1980) comb. nov., Cyclorhipidion obtusatum (Schedl, 1972) comb. nov., Cyclorhipidion perpunctatum (Schedl, 1971) comb. nov., Cyclorhipidion repositum (Schedl) comb. nov., Cyclorhipidion separandum (Schedl, 1971) comb. nov., Debus abscissus (Browne, 1974) comb. nov., Debus amplexicauda (Hagedorn, 1910) comb. nov., Debus armillatus (Schedl, 1933) comb. nov., Debus balbalanus (Eggers 1927) comb. nov., Debus blandus (Schedl, 1954) comb. nov., Debus cavatus (Browne, 1980) comb. nov., Debus cylindromorphus (Eggers, 1927) comb. nov., Debus dentatus (Blandford, 1895) comb. nov., Debus excavus (Schedl, 1964) comb. nov., Debus fischeri (Hagedorn, 1908) comb. nov., Debus hatanakai (Browne, 1983) comb. nov., Debus insitivus (Schedl, 1959) comb. nov., Debus persimilis (Eggers, 1927) comb. nov., Debus subdentatus (Browne, 1974) comb. nov., Debus trispinatus (Browne, 1981) comb. nov., Diuncus taxicornis (Schedl, 1971) comb. nov., Euwallacea agathis (Browne, 1984) comb. nov., Euwallacea assimilis (Eggers, 1927) comb. nov., Euwallacea bryanti (Sampson, 1919) comb. nov., Euwallacea latecarinatus (Schedl, 1936) comb. nov., Euwallacea pseudorudis (Schedl, 1951) comb. nov., Euwallacea semipolitus (Schedl, 1951) comb. nov., Euwallacea temetiuicus (Beeson, 1935) comb. nov., Immanus duploarmatus (Browne, 1962) comb. nov., Leptoxyleborus sublinearis (Eggers, 1940) comb. nov., Peridryocoetes pinguis (Browne, 1983) (Dryocoetini) comb. nov., Stictodex halli (Schedl, 1954) comb. nov., Stictodex rimulosus (Schedl, 1959) comb. nov., Terminalinus granurum (Browne, 1980) comb. nov., Terminalinus indonesianus (Browne, 1984) comb. nov., Terminalinus moluccanus (Browne, 1985) comb. nov., Terminalinus pseudomajor (Schedl, 1951) comb. nov., Terminalinus sublongus (Eggers, 1927) comb. nov., Terminalinus takeharai (Browne) comb. nov., Terminalinus xanthophyllus (Schedl, 1942) comb. res., Tricosa abberrans (Schedl, 1959) comb. nov., Xenoxylebora truncatula (Schedl, 1957) comb. nov., Xyleborinus figuratus (Schedl, 1959) comb. nov., Xylosandrus cancellatus (Eggers, 1936) comb. nov., all from Xyleborus. Fifteen new synonyms are proposed: Anisandrus ursulus (Eggers, 1923)(= Xyleborus lativentris Schedl, 1942 syn. nov.); Cyclorhipidion amanicus (Hagedorn, 1910)(= Xyleborus jongaensis Schedl, 1941 syn. nov.); Cyclorhipidion bodoanum (Reitter, 1913) (= Xyleborus takinoyensis Murayama, 1953 syn. nov.); Cyclorhipidion pelliculosum (Eichhoff, 1878) (= Xyleborus okinosenensis Murayama, 1961 syn. nov.); Cyclorhipidion repositum (Schedl, 1942) (= Xyleborus pruinosulus Browne, 1979 syn. nov.); Debus persimilis (Eggers, 1927) (= Xyleborus subdolosus Schedl, 1942c syn. nov.); Debus robustipennis (Schedl, 1954) (= Xyleborus interponens Schedl, 1954 syn. nov.); Euwallacea destruens (Blandford, 1896) (= Xyleborus procerior Schedl, 1942 syn. nov.); Euwallacea nigrosetosus (Schedl, 1939) (= Xyleborus nigripennis Schedl, 1951 syn. nov.); Euwallacea siporanus (Hagedorn, 1910) (= Xyleborus perakensis Schedl, 1942 syn. nov.); Microperus quercicola (Eggers, 1926) (= Xyleborus semistriatus Schedl, 1971 syn. nov.); Stictodex dimidiatus (Eggers, 1927) (= Xyleborus spicatus Browne, 1986 syn. nov.); Stictodex halli (Schedl, 1954) (= Xyleborus cuspidus Schedl, 1975 syn. nov.); Terminalinus Hopkins, 1915 (= Fortiborus Hulcr & Cognato 2010 syn. nov.); Terminalinus moluccanus (Browne, 1985) (= Xyleborus teminabani Browne, 1986 syn. nov.).

Revision of the xyleborine ambrosia beetle genus Microperus Wood, 1980 (Curculionidae, Scolytinae, Xyleborini) of Thailand with four new species and four newly recorded species.

Microperus Wood, 1980 ambrosia beetles in Thailand are reviewed. Four species, M.bidentatus sp. nov., M.bucolicus sp. nov., M.globodeclivis sp. nov., and M.serratus sp. nov. are described. Four new combinations are given: Microperusarmaticeps (Schedl, 1942) comb. nov., Microperusexsculptus (Eggers, 1927) comb. nov., Microperuspedellus (Schedl, 1969) comb. nov., and Microperusspicatulus (Browne, 1986) comb. nov., stat. res., all from Xyleborus. Two new synonyms are proposed: Microperuscruralis (Schedl, 1975) (= Xyleborusmyllus Browne, 1986 syn. nov.), Microperusexsculptus (Eggers, 1927) (= Xyleborusdentipennis Browne, 1983 syn. nov.). Four species are reported from Thailand for the first time: Microperuschrysophylli (Eggers, 1930), Microperusexsculptus, Microperusnanus (Browne, 1949) and Microperusquercicola (Eggers, 1926). With the inclusion of the Microperus species described and recorded herein, the diversity of Microperus is increased to 35 species, of which 18 are recorded in Thailand. An updated key to the Microperus of the Indochinese Peninsula and China is provided. The taxonomy, diagnostic characters, and distribution of species are briefly discussed.

Eggersanthus Sittichaya amp; Smith gen. nov., a new Oriental ambrosia beetle genus (Coleoptera: Curculionidae: Scolytinae: Xyleborini).

A new genus, Eggersanthus Sittichaya Smith gen. nov is described from a single species, Webbia sublaevis Eggers, 1927. The taxonomic characters of Eggersanthus and the morphologically similar genus Arixyleborus are analyzed and compared, and the status of the Webbia genus group is discussed.

Ten newly recorded species of xyleborine ambrosia beetles (Coleoptera, Curculionidae, Scolytinae, Xyleborini) from Thailand.

Ten species of ambrosia beetles of the tribe Xyleborini, Amasabeesoni (Eggers, 1930), Amasaopalescens (Schedl, 1937), Amasacylindrotomica (Schedl, 1939), Arixyleborushirsutulus Schedl, 1969, Beaveriumlatus (Eggers, 1923), Cnestusprotensus (Eggers, 1930), Coptodryasquadricostata (Schedl, 1942), Cryptoxyleborusconfusus Browne, 1950, Cryptoxyleboruspercuneolus (Schedl, 1951) and Cyclorhipidionvigilans (Schedl, 1939), are recorded here for the first time in Thailand. Diagnostic characters, illustrations, distribution and biological data are provided for each species. Xylosandrusramulorum (Schedl, 1957), stat. res. is removed from synonymy with Amasacylindrotomica and reinstated as a valid species.

Cnestusquadrispinosus, a new species of xyleborine ambrosia beetle from Thailand and Borneo (Coleoptera, Curculionidae, Scolytinae, Xyleborini).

A new species, Cnestusquadrispinosus, is described from Thailand, Brunei Darussalam, and East Malaysia (Sabah). It is compared to three related species of Cnestus which lack a mycangial tuft of hairs on the pronotum, and have an impressed elytral declivity.