Taxonomy of Euschizomerus Chaudoir 1850 (Coleoptera: Carabidae: Panagaeinae) from India with a new species and new synonym
Author
Jithmon, V. A.
Author
Thomas, Sabu K.
text
Zootaxa
2018
2018-09-05
4471
2
361
368
journal article
29474
10.11646/zootaxa.4471.2.8
6719f88c-3178-4197-a692-666ba218d512
1175-5326
1439780
95544704-1DFA-4C8C-B3F1-3813E966BA29
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
).