Medon sabahicus, Assing, 2018

Assing, Volker, 2018, A revision of Medon. XI. Five new species, additional records, and the first confirmed records from the Oriental region (Coleoptera: Staphylinidae: Paederinae), Beiträge Zur Entomologie = Contributions to Entomology (Beitr. Entomol.) 68 (1), pp. 69-81 : 77

Medon sabahicus spec. nov.

urn:lsid:zoobank.org:act:24AF6CD2-27BC-45D4-A2AB-735AA815D552

( Figs 22–25 )

Type material: Holotype ♂: “ Malaysia, Sabah, Sandakan, S Lokan ( LF) [= logged forest], March 97, AYC Chung / FIT 9/3/4 / Pae50 / BMNH {E} 2002-113, A. Y. C. Chung, LF - Logged Forest / Holotypus ♂ Medon sabahicus sp. n. det. V. Assing 2015” ( BMNH).

Etymology: The specific epithet (adjective) is derived from Sabah, where the type locality is situated.

Description: Body length 3.7 mm; length of forebody 2.0 mm. Elytra brown, with the humeral portion paler. Other external characters as in M. sundaicus .

♂: sternite VII ( Fig. 22 ) transverse, posterior margin with broad and pronounced concavity, on either side with a comb of 8 palisade setae; sternite VIII ( Fig. 23 ) with a rather large posterior excision of subtriangular shape; aedeagus 0.51 mm long and shaped as in Figs 24–25 .

Comparative notes: This species is distinguished from the similar M. sundaicus by slightly larger size, the darker coloration of the elytra, the differently shaped posterior margin of the male sternite VII with longer combs of more numerous palisade setae, and by the longer aedeagus with a differently shaped apex (ventral view) and without a dark internal structure.

Distribution and natural history: The type locality is situated in Sabah, northeastern Borneo, Malaysia. The holotype was collected with a flight interception trap in a logged forest.

Figures

Figs 13–25: Medon sundaicus spec. nov. (13–21, 15, 17, 20–21: non-type male from Thailand) and M. sabahicus spec. nov. (22–25): forebody (13); male sternite VII (14–15, 22); male sternite VIII (16–17, 23); median lobe of aedeagus in lateral and in ventral view (18–21, 24–25). Scale bars: 13: 0.5 mm; 14–25: 0.2 mm.