Stiliderus sp. Z

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 : 126-127

Stiliderus sp. Z

1 ♂, 5 ♀♀, Indonesia, C. Sulawesi, Palu Palolo, Lindu N. P., 25.–27.VIII.1990, leg. A. RIEDEL (4 exx. SMNS, 2 exx. CRO) ; 1 ♀, S. Sulawesi, Pc. Palopo, 620–780 m, 14.IX.1997, leg. A. R IEDEL ( NHMW) .

Description

Body length 5.0– 5.5 mm. Proportions: length of head: 79; breadth of head: 80; diameter of eye: 26; length of antenna: 170; length of pronotum: 80; breadth of pronotum: 68; length of elytron: 83; breadth of elytra: 94; metatibia: 85; metatarsus: 47.

Black, abdomen pitchy black; labrum dark brown, the margins paler; palpi, antennae and legs testaceous. Forebody see Fig. 29 .

Male: aedoeagus lost; 8 th abdominal sternite with a broad triangular emargination; abdominal tergite X see Fig. 27 , in both sexes with a small margination, the apicolateral lobes fringed with numerous sub-equal setae, without a single longer seta.

Remark

This species runs to S. brendelli in my 1997 key, by virtue of the combination of its glossy head and elytra devoid of microsculpture, and in the shape of the head, with pronounced apico-lateral angles. It also resembles that spe-

cies and S. brendellianus n. sp. in the fine sculpture of the pronotum, but is a larger insect than either. In the shape of the quadrate, not markedly transverse head and uniformly testaceous legs it most closely resembles S. brendellianus , from which it differs in proportions and in the conformation of the female abdominal tergite X.

Figures

Figs. 22–31. Stilicoderus and Stiliderus spp., male sternites VI, VII (22), female sternite XIII (23), male sternite VIII (24, 25, 28), female tergite X (26, 27), fore-body (29–31). – 22. Stilicoderus papuanus n.sp. 23. Stilicoderus sp.X. 24. Stilicoderus sarahae n. sp. 25. Stiliderus germanus n. sp. 26. Stiliderus brendellianus n. sp. 27. Stiliderus sp.Z. 28. Stiliderus agostii n.sp. 29. Stiliderus sp.Z. 30. Stiliderus agostii n.sp. 31. Stiliderus rugulosicollis n. sp. – Scales: 0.5 mm (22–28), 3 mm (29–31).