Brachytrycherus conaensis Chang, Bi & Ren, 2016

Chang, Ling-Xiao, Bi, Wen-Xuan & Ren, Guo-Dong, 2019, A review of the genus Brachytrycherus Arrow (Coleoptera, Endomychidae) of mainland China with descriptions of three new species, ZooKeys 880, pp. 85-112 : 85

Brachytrycherus conaensis Chang, Bi & Ren, 2016 Figs 14 , 16D, E , 20 , 21 , 22 , 23 , 24A

Brachytrycherus conaensis Chang et al., 2016: 139.

Diagnosis.

Brachytrycherus conaensis is similar to B. madurensis in appearance but can be differentiated by each elytron bearing three maculae, anterior two maculae nearly rhomboid in shape, sometimes connected to each other, and the anterior and posterior elytral maculae without dentition.

Length.

8.2-8.3 mm; width: 4.5-4.7 mm.

Type material.

Holotype, male, Xizang, Cona, Lexiang, 2500-2600 m, 20-30.VI.2013, Wen-Xuan Bi leg. (MHBU). Paratypes, 1 female, same data as holotype; 2 females, Xizang, Medog, Beibeng, Gelincun, 1700 m, 3.VIII.2014, Wen-Xuan Bi leg. (CBWX); 3 males, 7 females, Xizang, Cuona, Lexiang, 2500 m, 6.VIII.2010, Wen-Xuan Bi leg. (CBWX); 5 males, 6 females, same data except 15.VII.2011 (CBWX); 26 males, 11 females, same data except 29-30.VI.2013 (CBWX); 1 male, 1 female, same data except (MZPW); 18 males, 1 female, same data except 2500-2600 m, 20-30.VI.2013 (CBWX); 1 female, same data except 2700 m, 18.VI.2013 (CBWX).

Type locality.

China (Xizang).

Distribution.

China (Xizang).

Biology and ecology.

Almost all individuals were found active on fence, woodpile or timber piles within the village and its surrounding area at night ( Fig. 16D, E )). Some larvae and adults were found (sometimes at the same time) feeding on the surface of the perithecia or spores of Daldinia concentrica ( Xylariaceae ) ( Fig. 16D ), seeming to prefer the asexual phase; however, individuals were also found on mature ascocarps ( Chang et al. 2016).

Figures

Figure 14. Type specimens of B. conaensis. A male holotype B female paratype 1 dorsal view 2 ventral view. Scale bar: 1 mm.

Figure 16. Habitats of B. conaensis and B. curviantennae. A large clump of Fagaceae plants of collecting site in Xizang, China B village of collecting site in Xizang, China C male of B. curviantennae (arranged) D male of B. conaensis and larva on the wood pile E female of B. conaensis feeding on the lichen growing on wood.

Figure 20. Left antenna of Brachytrycherus. A B. conaensis B B. curviantennae C B. femoralis.

Figure 21. Prosternal and intercoxal processes of males. A B. conaensis B B. curviantennae C B. femoralis.

Figure 22. Abdomen with ventrite V of males. A B. conaensis B B. curviantennae C B. femoralis.

Figure 23. Left tibia of Brachytrycherus (male). A B. conaensis B B. curviantennae C B. femoralis; 1 protibia; 2 mesotibia; 3 metatibia.

Figure 24. Aedeagus of Brachytrycherus. A B. conaensis B B. curviantennae C B. femoralis; 1 lateral view; 2 apical view. Scale bars: 1 mm.