Megadrypta Sciaky & Anichtchenko, 2020

Genus Megadrypta Sciaky & Anichtchenko, 2020 View in CoL

Megadrypta Sciaky & Anichtchenko, 2020: 525. View in CoL View Cited Treatment

Type species.

Megadrypta mirabilis Sciaky & Anichtchenko, 2020 , by original designation.

Diagnostic characters.

Large dryptine ground beetles with BL 13.0–17.0 mm. Dorsal surface dark with more or less bluish metallic luster; mouth parts, antennae, and legs reddish or dark brown. All terminal palpomeres securiform in males, slenderer and weakly expanded at apex in females; labrum trilobate, with medial lobe forwardly projecting; antennae long, aligned backward reaching middle of elytra; antennomere 1 nearly as long as sum of antennomeres 2–7 combined; temporae well developed. Pronotum cylindrical; anterior angles obtuse; lateral margins of pronotum distinctly doubly concave, before middle and after middle; lateral margins of pronotum completely beaded; posterior angles nearly rectangular, apex rounded. Elytra wide; shoulders extremely narrow; with 6–8 parascutellar pores; striae deeply punctate; intervals slightly convex and pubescent; posterior margins of elytra truncated, slightly sinuate near outer-apical angles. Hind wings reduced. Legs slender, tarsal claws toothless. Male genitalia stout; apical lamella short and wide, apex rounded and thickened; endophallus with more or less distinct central sclerite. Gonocoxite 2 of ovipositor falciform and smooth, without ensiform setae.

Geographical notes

(Fig. 1 View Figure 1 ). Members of this genus were only found in mid-elevation (1000–1500 m) habitats in southern China. Megadrypta mirabilis is distributed in the Nanling Area including southeastern Guizhou, northern Guangxi, and northern Guangdong. Megadrypta maozhoui sp. nov. is distributed in southwestern mountains around the Sichuan Basin, and it is currently recorded from central Sichuan and northeastern Yunnan.

Key to species of Megadrypta Sciaky & Anichtchenko, 2020