Adoretus (Chaetadoretus) laosensis Frey, 1970

Limbourg, Pol, Constant, Jérôme, Institute, Matthias Seidel Belgian, Sciences, Natural, Heritage, Scientific, Institute, Belgian, Sciences, Natural & Taxonomy, O. D., 2022, Review of the Adoretini of Cambodia with six new species, Belgian Journal of Entomology 128, pp. 1-58 : 39

Adoretus (Chaetadoretus) laosensis Frey, 1970 [new country record]

Fig. 21

Adoretus laosensis FREY, 1970: 177 [original description], fig. 9 [aedeagus].

Adoretus (Adoretus) laosensis – MACHATSCHKE, 1972: 331 [placed in Adoretus (Adoretus) , catalogue]. — KRAJCIK, 2008: 14 [catalogue].

TYPE MATERIAL EXAMINED. Paratypes 1♂: [ LAOS, Vientiane, 31.V-3.VI.1960] [S. Quate Collector] [PARATYPE] [ Adoretus laosensis n. sp., det. G. Frey, 1967/68] [Coll. G. Frey NMB] ( NMB); 1♂, 2♀♀: [ LAOS, Vientiane, 31.V-3.VI.1960] [Light trap, S. Quate & L. Quate] [PARATYPE] [ Adoretus laosensis n. sp., det. G. Frey, 1967/68] [Coll. G. Frey NMB] ( NMB) .

ADDITIONAL MATERIAL EXAMINED: 4♂♂, 1♀ : Cambodia, Pursat prov., Phnom Samkos W. S., Pramaoy, forest edge, light trap, 13.iv.2005, leg. K. Smets & I. Var ( RBINS); 1♂ : Cambodia, Pursat prov., Phnom Samkos W. S., forest edge, light trap, 14.iv.2005, leg. K. Smets & I. Var ( RBINS); 1♂ : Cambodia, Pursat prov., Phnom Samkos W. S., Pramaoy forest edge, light trap, 15.iv.2005, leg. K. Smets & I. Var ( RBINS) .

Laos: 1♂: Champasak prov., Bolavens Plateau , ca. 3km, SE Ban Lak 40 coffee plant/forest, 1070m, 15°09.8’ 106°09.5’E, 09.v.2010, S. Jakl leg. ( MSPC) .

DISTRIBUTION. Only known from Cambodia and Laos (Vientiane, Laos = type locality) .

NOTE. The type specimens from Laos are differently colored, from deep brown to blackish, with legs always yellowish; aedeagi of specimens from Cambodia can slightly differ between specimens, with basal internal carina either regularly rounded ( Fig. 21f ) or prolonged on each side by a right-angled process ( Fig. 21h ). This species is related to A. (Chaetadoretus) villicollis Ohaus, 1914a . There are no external differences between both species. Adoretus (Chaetadoretus) laosensis has been originally described in the subgenus Adoretus Laporte, 1840 , however, the characteristics of its setae correspond to the subgenus Chaetadoretus as defined by OHAUS (1914a) to which it is here transferred.

Figures

Fig. 21. Adoretus (Chaetadoretus) laosensis FREY, 1970. A–B, ♂ from Cambodia (RBINS). A, habitus, dorsal view. B, habitus, lateral view. C–D, ♀ from Cambodia (RBINS). C, habitus dorsal view. D, habitus, lateral view. E–H, aedeagus (intraspecific variation). E, lateral view. F, dorsal view. G, lateral view. H, dorsal view. I, distribution in Cambodia and new Laotian record.