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Amasa beesoni (Eggers, 1930) A lateral view B dorsal view C posterolateral view D antenna E front F declivity.
Source publication
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, Cryptoxyleboruspe...
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Dischidia phuphanensis Chatan & Promprom, a new species from north-eastern Thailand, is described and illustrated. The new species is similar to D. tonkinensis Costantin, but is distinguished by the shape of its leaves, the apices of the staminal corona lobes, the colour of the corolla and the absence of a corolline corona. The distinguishing chara...
Citations
... In Thailand, sixteen Arixyleborus species were previously recorded (Hutacharern et al. 2007;Sittichaya et al. 2012;Beaver et al. 2014;Sittichaya et al. 2019;Smith et al. 2020). In this present study we describe four new species increasing the diversity of the Thai fauna to 20 Arixyleborus species and that of the genus to 46. ...
... Most previous studies of Arixyleborus in Thailand have concentrated on only a few provinces: Chiang Mai in the North, and three provinces (Chumphon, Nakhon Sri Thammarat and Songkhla) in Southern Thailand, and in few habitat types (Hutacharern et al. 2007;Sittichaya et al. 2012;Beaver et al. 2014;Sittichaya et al. 2019;Smith et al. 2020). More recent collecting by WS throughout Thailand has provided further information on the distribution of the species within the country and on the habitat types in which the species occur. ...
Four new species, Arixyleborus halabala Sittichaya, Beaver & Smith sp. nov., Arixyleborus longicauda Sittichaya, Beaver & Smith sp. nov., Arixyleborus vellus Sittichaya, Beaver & Smith sp. nov. are described from Thailand, and Arixyleborus liratus Sittichaya, Beaver & Smith sp. nov. from Thailand and East Malaysia (Sabah). With the inclusion of the species described here, the diversity of Arixyleborus is increased to 46 species, of which 20 occur in Thailand. A synoptic list with distributions and habitat types is provided.
... Amasa aspersa was the first Thai species reported from Nakhon Sri Thammarat Province by Schedl (1936). Eight additional species were added by Beaver et al. (2014), Sittichaya et al. (2019) and Smith et al. (2020). In this present study we describe three new species and report three new country records, increasing the Thai diversity to 16 species. ...
... Amasa resecta and A. schlichii are widely distributed. Amasa species are also primarily found in forested areas compared to other landscapes (Beaver et al. 2014;Sittichaya et al. 2019;Smith et al. 2020). This apparently skewed distribution may simply be the result of more intensive sampling in the southern provinces (more sites and more traps) than in other parts of the country. ...
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.
Eighteen xyleborine ambrosia beetles are described and illustrated: Anisandrus proscissus Smith, Beaver, Pham & Cognato sp. nov. (Vietnam), Anisandrus simplex Smith, Beaver & Cognato sp. nov. (Nepal), Arixyleborus belalongi Smith, Beaver & Cognato sp. nov. (Brunei Darussalam), Beaverium brevicaudatus Smith, Beaver & Cognato sp. nov. (Indonesia), Cnestus luculentus Smith, Beaver & Cognato sp. nov. (India), Cyclorhipidion achlys Smith, Beaver, Pham & Cognato sp. nov. (Vietnam), Cyclorhipidion conidentatus Smith, Beaver & Cognato sp. nov. (Indonesia), Cyclorhipidion gladigerum Smith, Beaver & Cognato sp. nov. (Thailand), Cyclorhipidion lapilliferum Smith, Beaver, Pham & Cognato sp. nov. (Vietnam), Cyclorhipidion nepalense Smith, Beaver & Cognato sp. nov. (Nepal), Cyclorhipidion taedulum Smith, Beaver, Pham & Cognato sp. nov. (Vietnam), Cyclorhipidion titorum Smith, Beaver, Pham & Cognato sp. nov. (Vietnam), Euwallacea alastos Smith, Beaver & Cognato sp. nov. (Japan), Leptoxyleborus regina Smith, Beaver & Cognato sp. nov. (Papua New Guinea), Tricosa hipparion Smith, Beaver & Cognato sp. nov. (Malaysia), Xyleborinus acanthopteron Smith, Beaver & Cognato sp. nov. (Thailand), Xyleborinus dumosus Smith, Beaver, Pham & Cognato sp. nov. (Vietnam), Xyleborinus nobuchii Smith, Beaver & Cognato sp. nov. (Japan). New distribution records are reported for 67 Asian species. Cyclorhipidion nemesis Smith & Cognato, described from U. S. A., is reported from Asia (China), its hypothesized native continent, for the first time. Its identity is confirmed with COI and CAD DNA within a phylogenetic analysis including other Cyclorhipidion species.
The Southeast Asian xyleborine ambrosia beetle fauna is reviewed for the first time. Thirty-four genera and 315 species are reviewed, illustrated, and keyed to genera and species. Sixty-three new species are described: Amasa cycloxyster sp. nov. , Amasa galeoderma sp. nov. , Amasa gibbosa sp. nov. , Amasa lini sp. nov. , Amasa tropidacron sp. nov. , Amasa youlii sp. nov. , Ambrosiophilus caliginestris sp. nov. , Ambrosiophilus indicus sp. nov. , Ambrosiophilus lannaensis sp. nov. , Ambrosiophilus papilliferus sp. nov. , Ambrosiophilus wantaneeae sp. nov. , Anisandrus achaete sp. nov. , Anisandrus auco sp. nov. , Anisandrus auratipilus sp. nov. , Anisandrus congruens sp. nov. , Anisandrus cryphaloides sp. nov. , Anisandrus feronia sp. nov. , Anisandrus hera sp. nov. , Anisandrus paragogus sp. nov. , Anisandrus sinivali sp. nov. , Anisandrus venustus sp. nov. , Anisandrus xuannu sp. nov. , Arixyleborus crassior sp. nov. , Arixyleborus phiaoacensis sp. nov. , Arixyleborus setosus sp. nov. , Arixyleborus silvanus sp. nov. , Arixyleborus sittichayai sp. nov. , Arixyleborus titanus sp. nov. , Coptodryas amydra sp. nov. , Coptodryas carinata sp. nov. , Coptodryas inornata sp. nov. , Cyclorhipidion amasoides sp. nov. , Cyclorhipidion amputatum sp. nov. , Cyclorhipidion denticauda sp. nov. , Cyclorhipidion muticum sp. nov. , Cyclorhipidion obesulum sp. nov. , Cyclorhipidion petrosum sp. nov. , Cyclorhipidion truncaudinum sp. nov. , Cyclorhipidion xeniolum sp. nov. , Euwallacea geminus sp. nov. , Euwallacea neptis sp. nov. , Euwallacea subalpinus sp. nov. , Euwallacea testudinatus sp. nov. , Heteroborips fastigatus sp. nov. , Heteroborips indicus sp. nov. , Microperus latesalebrinus sp. nov. , Microperus minax sp. nov. , Microperus sagmatus sp. nov. , Streptocranus petilus sp. nov. , Truncaudum bullatum sp. nov. , Xyleborinus cuneatus sp. nov. , Xyleborinus disgregus sp. nov. , Xyleborinus echinopterus sp. nov. , Xyleborinus ephialtodes sp. nov. , Xyleborinus huifenyinae sp. nov. , Xyleborinus jianghuansuni sp. nov. , Xyleborinus thaiphami sp. nov. , Xyleborinus tritus sp. nov. , Xyleborus opacus sp. nov. , Xyleborus sunisae sp. nov. , Xyleborus yunnanensis sp. nov. , Xylosandrus bellinsulanus sp. nov. , Xylosandrus spinifer sp. nov. . Thirteen new combinations are given: Ambrosiophilus consimilis (Eggers) comb. nov. , Anisandrus carinensis (Eggers) comb. nov. , Anisandrus cristatus (Hagedorn) comb. nov. , Anisandrus klapperichi (Schedl) comb. nov. , Anisandrus percristatus (Eggers) comb. nov. , Arixyleborus resecans (Eggers) comb. nov. , Cyclorhipidion armiger (Schedl) comb. nov. , Debus quadrispinus (Motschulsky) comb. nov. , Heteroborips tristis (Eggers) comb. nov. , Leptoxyleborus machili (Niisima) comb. nov. , Microperus cruralis (Schedl) comb. nov. , Planiculus shiva (Maiti & Saha) comb. nov. , Xylosandrus formosae (Wood) comb. nov. Twenty-four new synonyms are proposed: Ambrosiophilus osumiensis (Murayama, 1934) (= Xyleborus nodulosus Eggers, 1941 syn. nov. ); Ambrosiophilus subnepotulus (Eggers, 1930) (= Xyleborus cristatuloides Schedl, 1971 syn. nov. ); Ambrosiophilus sulcatus (Eggers, 1930) (= Xyleborus sinensis Eggers, 1941 syn. nov. ; = Xyleborus sulcatulus Eggers, 1939 syn. nov. ); Anisandrus hirtus (Hagedorn, 1904) (= Xyleborus hirtipes Schedl, 1969 syn. nov. ); Cnestus protensus (Eggers, 1930) (= Cnestus rostratus Schedl, 1977 syn. nov. ); Cyclorhipidion bodoanum (Reitter, 1913) (= Xyleborus misatoensis Nobuchi, 1981 syn. nov. ); Cyclorhipidion distinguendum (Eggers, 1930) (= Xyleborus fukiensis Eggers, 1941 syn. nov. ; = Xyleborus ganshoensis Murayama, 1952 syn. nov. ); Cyclorhipidion inarmatum (Eggers, 1923) (= Xyleborus vagans Schedl, 1977 syn. nov. ); Debus quadrispinus (Motschulsky, 1863) (= Xyleborus fallax Eichhoff, 1878 syn. nov. ); Euwallacea gravelyi (Wichmann, 1914) (= Xyleborus barbatomorphus Schedl, 1951 syn. nov. ); Euwallacea perbrevis (Schedl, 1951) (= Xyleborus molestulus Wood, 1975 syn. nov. ; Euwallacea semirudis (Blandford, 1896) (= Xyleborus neohybridus Schedl, 1942 syn. nov. ); Euwallacea sibsagaricus (Eggers, 1930) (= Xyleborus tonkinensis Schedl, 1934 syn. nov. ); Euwallacea velatus (Sampson, 1913) (= Xyleborus rudis Eggers, 1930 syn. nov. ); Microperus kadoyamaensis (Murayama, 1934) (= Xyleborus pubipennis Schedl, 1974 syn. nov. ; = Xyleborus denseseriatus Eggers, 1941 syn. nov. ); Stictodex dimidiatus (Eggers, 1927) (= Xyleborus dorsosulcatus Beeson, 1930 syn. nov. ); Webbia trigintispinata Sampson, 1922 (= Webbia mucronatus Eggers, 1927 syn. nov. ); Xyleborinus artestriatus (Eichhoff, 1878) (= Xyelborus angustior [ sic ] Eggers, 1925 syn. nov. ; = Xyleborus undatus Schedl, 1974 syn. nov. ); Xyleborinus exiguus (Walker, 1859) (= Xyleborus diversus Schedl, 1954 syn. nov. ); Xyleborus muticus Blandford, 1894 (= Xyleborus conditus Schedl, 1971 syn. nov. ; = Xyleborus lignographus Schedl, 1953 syn. nov. ). Seven species are removed from synonymy and reinstated as valid species: Anisandrus cristatus (Hagedorn, 1908), Cyclorhipidion tenuigraphum (Schedl, 1953), Diuncus ciliatoformis (Schedl, 1953), Euwallacea gravelyi (Wichmann, 1914), Euwallacea semirudis (Blandford, 1896), Microperus fulvulus (Schedl, 1942), Xyleborinus subspinosus (Eggers, 1930).
