Chlaenius (Ocybatus) orbicollis Chaudoir, 1876, 2017

Ullah, Mishkat, Naeem, Muhammad, Mahmood, Khalid & Garner, Beulah, 2022, Addition to the knowledge of Tribe Chlaeniini Brullé, 1834 (Coleoptera: Carabidae) from Pakistan, Zootaxa 5115 (4), pp. 451-486 : 471-472

Chlaenius (Ocybatus) orbicollis Chaudoir, 1876

( Fig. 7b )

Chlaenius orbicollis Chaudoir, 1876: 40 .

Material examined. PAKISTAN • 1 ♂; Azad Jammu & Kashmir, Rawalakot; Afshan leg.; NIM • 1 ♂; “ N.W. India ” [Khyber Pakhtunkhwa]; Chlaenius (Ocybatus) orbicollis Chaudoir 1876 MishkatUllah 2017 det.; NHMUK (B.M. 1884-19).

Measurements. Male (n=5): TL= 10.85 mm, HW= 1.85 mm, PL= 2.36 mm, PW= 2.64 mm, EL= 6.6 mm, EW= 1.95 mm. Ratios PL/PW= 0.88, HW/PW= 0.69 and EL/EW= 3.37.

No females were studied / available for study.

Diagnosis. Body elongated. Head and pronotum black with metallic green coppery tinge. Labrum, mandibles, labial and maxillary palpi, antennalarticles I–III and legs reddish brown; rest of antennal articles IV–IX dark brown. Clypeus smooth, frons smooth with sides rugose, vertex and neck densely rugose as compared to frons, surface moderately covered with fine minute punctures. Pronotum oval; apical margin slightly emarginate and basal margin straight; antero-lateral angles slightly protuding and postero-lateral angles rounded and obtuse; lateral sides regularly convex; surface densely covered with uniformly sized wide deep fovae/punctures, lateral furrow narrow at apex and flattend/widend toward base, latero-basal fovae short wide and deep. Elytra matt black with deep bluish tinge, preapical marks rounded and yellowish brown spread over interval IV–VIII; humeral angles rounded; striae deep and closely punctate; intervals slightly convex/raised with densely setiferous punctures, pubscence golden. Venter shining black, prosternum, proepimeron, mesepisternum anterior margin, metepisternum, metepimeron and first abdominal sternum moderately covered with wide deep fovae, rest of the abodominal sternites finely punctate.

Comments. Ch. (O.) orbicollis slightly resembles Ch. (O.) bioculatus Chaudoir, 1856 in genral habitus. Orbicollis is slim and smaller in size, pronotum lateral border yellowish brown, elytra preapical mark yellowish round. Whereas, Ch. (O.) bioculatus slightly wider and larger in size; pronotum lateral border black. Elytra perapical mark yellowish wavy on edges. This species is reported for the first time from Pakistan. In this current study, it was collected from Rawalakot (Azad Jummu & Kashmir).

Distribution. India, Sri Lanka, Myanmar (Anichtchenko 2017; Lorenz 2018) and Pakistan (first country record).

Figures

FIGURE 7. Dorsal habitus (a) Chlaenius (Ocybatus) bioculatus Chaudoir, 1856 imaged from NHMUK collection; (b) Chlaenius (Ocybatus) orbicollis Chaudoir, 1876 imaged from NHMUK collection; (c) Chlaenius (Pachydinodes) hamifer (Chaudoir 1856); (d) Chlaenius (Pachydinodes) leucops (Wiedemann, 1823) imaged from NHMUK collection.