Micrillus kongi Assing 2018, nov.sp.
Creators: name: Assing, Volker
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Micrillus
Micrillus kongi

description: Micrillus kongi nov.sp. (Figs 9, 25-33)
T y p e m a t e r i a l: Holotype ♂: " CAMBODIA - Kampong Chhnang prov., Kampong Chhnang env., Toul Ompel, 12°14'14''N, 104°41'15''E, light trap, 19+ 21.V.2018, leg. Bernardi, Kong & Rossi / Holotypus ♂ Micrillus kongi sp. n., det. V. Assing 2018" (cAss). Paratypes: 4♂♂, 2♀♀: same data as holotype (cAss).
E t y m o l o g y: This species is dedicated to Vannak Kong (Sisophon: Mean Chey University), one of the collectors of all the Cambodian specimens treated in the present paper.
D e s c r i p t i o n: Body length 6.6-7.5 mm; length of forebody 3.7-3.8 mm. Habitus as in Fig. 25. Coloration: forebody blackish-brown to black, with the elytra (at least the narrow suture and posterior margins) slightly paler; abdomen blackish-brown to black with the paratergites, the anterior margins of the tergites (sometimes also all of tergite III), and the apex (segments VIII-X except for the postero-lateral processes of segment IX; posterior half of segment VII) reddish; legs yellowish-red; antennae pale-reddish to reddish with the basal antennomeres slightly darker than the apical antennomeres.
Head (Fig. 26) oblong, approximately 1.1 times as long as broad, broadest across eyes, slightly tapering posteriad behind eyes; dorsal surface with dense setiferous micropunctation in posterior and lateral portions, median dorsal portion with very sparse micropunctation; scattered setiferous macropunctures present in anterior and lateral portion; integument with extremely fine transverse microsculpture. Eyes slightly more than half as long as postocular region. Antenna approximately 2.9 mm long and moderately slender; antennomeres IV-X of gradually decreasing length; IV approximately twice as long as broad; X weakly oblong. Apical palpomere of maxillary palpus of slen- der conical shape, approximately two-thirds as long as maxillary palpomere III.
Pronotum (Fig. 26) approximately 1.15 times as long as broad and 1.05-1.10 times as broad as head; lateral margins straight, converging posteriad in posterior three-fourths in dorsal view; posterior margin weakly concave; punctation fine, very dense, and granulose; midline with or without very narrow impunctate band.
Elytra (Fig. 26) slightly shorter than pronotum; punctation extremely fine and extremely dense, barely visible in the pronounced microsculpture; surface matt. Hind wings fully developed. Protarsomeres I–IV not dilated. Metatarsomere I slightly longer than the combined length of II and III.
Abdomen (Fig. 27) narrower than elytra; tergites with distinct and moderately dense micropunctation bearing yellow and depressed to suberect pubescence of variable length and with macropunctures bearing very long and erect black setae; posterior margin of tergite VII with palisade fringe; tergite X and sternite IX of strongly reduced size (Fig. 29); postero-lateral processes of segment IX approximately three times as long as tergite X (Fig. 29).
♂: posterior excision of sternite VIII concave and moderately deep (Fig. 28); aedeagus (Figs 30-33) large in relation to body size, approximately 1.3 mm long, slender, weakly asymmetric, and weakly sclerotized; internal sac with distinctive internal structures, apically with a conspicuous comb-like series of one very long and approximately ten shorter sclerotized spines.
C o m p a r a t i v e n o t e s: As can be inferred from the similar external characters and particularly from the similarly derived morphology of the aedeagus, M. kongi is undoubtedly closely allied to M. suturalis. It differs from this species by the shapes of the apex and of the internal structures of the aedeagus. For illustrations and a redescription of M. suturalis see ASSING (2013).
D i s t r i b u t i o n a n d n a t u r a l h i s t o r y: Thetypelocality(Fig.9)and the collection data are identical to those of Scymbalium rossii and Micrillus virgatus. One of the male paratypes is teneral.
description: Published as part of Assing, Volker, 2018, A revision of Palaearctic and Oriental Scymbalium and Micrillus III. New species, new combinations, and additional records (Coleoptera: Staphylinidae: Paederinae), pp. 977-996 in Linzer biologische Beiträge 50 (2) on pages 991-992, DOI: 10.5281/zenodo.3776470