Euschizomerus denticollis ( Kollar 1836 )

Jithmon, V. A. & Thomas, Sabu K., 2018, Taxonomy of Euschizomerus Chaudoir 1850 (Coleoptera: Carabidae: Panagaeinae) from India with a new species and new synonym, Zootaxa 4471 (2), pp. 361-368 : 363

Euschizomerus denticollis ( Kollar 1836)

Fig. 1b.

Kollar, 1836: 334; Chaudoir, 1878: 161; Andrewes, 1930: 105; Hackel & Farkac, 2012: 86

Material examined: ♀, labelled “ India: Kerala: Ernakulam Dt., Kalady , 10.V.2017, light, Divya M. ”, in ZSI-Ca.

Description. Length: 9.7 mm

Head: Small, bluish black, anterior glabrous, shiny, posterior punctured and wrinkled. Strongly prominent globular dark brown eyes. Labrum small, angles weakly rounded, smooth, anterior margin strongly emarginated. Clypeus smooth, with single long setae on either side, straight margin. Palpi and the lower four segments of antennae dark brown and remaining brown. Apical labial and maxillary palpomeres securiform. Mandibles fairly short, tip not crossing each other.

Pronotum: Transverse, wider than head, bluish black, dorsal and ventral side roughly punctured and covered by yellow coloured setae, irregularly arranged large dots, Pronotal antero-lateral margin rounded with wing like expansion in the anterior half on both sides. Rounded anterior corners, posterior corners obtuse, lateral margin slightly sinuate behind the middle.

Elytra: Convex, long, weakly ovoid, greenish copper coloured, covered with yellow coloured setae, 3 times as long as pronotum; Widest behind the middle; Striae with deep punctures; Intervals weakly convex and punctured, equal in width, apex obliquely truncate and weakly emarginated; Elytral suture line not closed with a narrow gap at the apex. Projected humerus weakly sloping slightly rounded on the sides. Widest behind the middle.

Scutellum: triangular, dark bluish, surface glabrous.

Hind wing: fully grown.

Legs: reddish brown, pubescent.

Remarks: Pronotum is with wing like expansion in the lateromedial region and bluish black, elytra is greenish copper coloured and legs entirely reddish brown in E. denticollis Kollar (1836) whereas, E. metallicus Harold 1879 is with lateromedial region of pronotum pointed and greenish black green in colour, dark metallic green elytra and blackish brown legs. Additionally, distinctly smaller than the 14 mm long E. metallicus . Kollar (1838) provided no details of the locality of the holotype and Chaudoir 1878 commented that it probably came from “Indes orientales”. Distribution record of Andrewes 1930 confirms its presence in India (Kolkata), Sri Lanka and in south East Asia ( Malaysia, Indonesia - Sumatra Island, Cambodia).