Stilicoderus baliemensis, Rougemont, 2015

Rougemont, Guillaume De, 2015, Studies on Stiliderus Motschulsky and Stilicoderus Sharp: biogeographical notes and descriptions of new species (Coleoptera: Staphylinidae: Paederinae), Stuttgarter Beiträge zur Naturkunde A, Neue Serie 8, pp. 113-130 : 122

Stilicoderus baliemensis n. sp.

Holotype (♂): Irian Jaya, Jayawijaya, Wamena, Jiwika , 2300 m, 29.IX.1992, leg. A. RIEDEL ( SMNS) .

P a r a t y p e s: 3 ♀♀, Irian Jaya, Jayawijaya, Duirema , 1900–2100 m, 9.–11.IX.1992, leg. A. RIEDEL (2 exx. SMNS, 1 ex. CRO) .

Description

Body length ca. 5 mm. Proportions of holotype: length of head: 78; breadth of head: 75; diameter of eye: 27; length of antenna: 148; length of pronotum: 76; breadth of pronotum: 63; length of elytron: 100; breadth of elytra: 85; metatibia: 74; metatarsus: 46.

Head and pronotum black, elytra brown, abdomen fuscous, the apex of 7 th sternite and 8 th and 9 th sternites brown; palpi and antennae dark reddish brown, legs darker brown. Head slightly transverse, the sides retracted but with well marked postero-lateral angles; puncturation of head not particularly close, the punctures elongate, the interstices coalescing in parts into longitudinal rugae; head covered in evident recumbent pale pubescence. Labrum large, tridentate, the outer teeth not much larger then median tooth. Pronotum elongate, the punctures slightly smaller than those of head and round; pronotum with fine pale pubescence comparable to that of head. Elytra elongate, covered in numerous large foveate punctures not aligned serially; disc of elytra devoid of granulation, granules only evident near anterior and posterior borders; elytra clothed in fine pale recumbent pubescence comparable to that of head and pronotum.

Male: 8 th sternite with scarcely discernible broad shallow emargination. Aedoeagus see Fig. 12 .

Differential diagnosis

This species is similar to S. baliemensis n. sp. in its obsolescent elytral granules, but is a larger species with a different aedoeagus.

Figures

Figs. 11–21. Stilicoderus and Stiliderus spp., aedoeagi in lateral (a) and ventral (b) views. – 11. Stilicoderus lastianus n. sp. 12. Stilicoderus baliemensis n.sp. 13. Stilicoderus aerosoides n.sp. 14. Stilicoderus papuanus n.sp. 15. Stilicoderus continentalis n. sp. 16. Stilicoderus sarahae n.sp. 17. Stiliderus tengah n. sp. 18. Stiliderus germanus n.sp. 19. Stiliderus rugulosicollis n. sp. 20. Stiliderus brendellianus n.sp. 21. Stiliderus agostii n.sp. – Scales: 0.5 mm.