Harpaglossusopacus ( Chaudoir, 1857 )

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 : 482-483

Harpaglossusopacus ( Chaudoir, 1857)

( Fig. 10b )

Ceroglossus opacus Chaudoir, 1857: 8 ; Sogines indicus Motschulsky, 1865: 257 ; Poecilus indicus ( Chaudoir, 1876: 2 & 6).

Material examined. PAKISTAN • 1 ♂; Sindh, Mithi ; 12 Sep. 2006; Ishaque Mastoi leg.; NIM .

Measurements. Male (n=10): TL= 16.65 mm, HW= 3.25 mm, PL= 3.62 mm, PW= 4.60 mm, EL= 10.13 mm, EW= 3.22 mm. Ratios PL/PW= 0.78, HW/PW= 0.70 and EL/EW= 3.14

Female (n=10): TL= 16.62 mm, HW= 3.32 mm, PL= 3.72 mm, PW= 4.52 mm, EL= 9.97 mm, EW= 3.19 mm. Ratios PL/PW= 0.82, HW/PW= 0.73 and EL/EW= 3.12

Diagnosis. Black matt, head more bulging posteriorly, labrum slightly emarginate, clypeus smooth, frons vertex and neck area wrinkled and densely punctate. Palpi and antennal articles dark brown. Pronotum between anterior impression and apex raised/convex transversely with longitudinal wrinkles; apical margin convex, antero-lateral angle broadly rounded, lateral sides less convex with maximum width at middle, postero-lateral angle acute; laterobasal fovae deep and long; disc less convex, surface lightly rugose and densely covered with minute punctures; lateral depression and area near basal border with wide shallow punctures. Elytra matt black, oval shaped; striae not visible but punctate throughout; intervals flat with isodiamtric microsculpture. Venter glabrous, proepisternum anterior, metepisternum mid, metepimeron one-part, abdominal segment Ione-part punctate.

Comments. H. opacus appears similar to H. obscurus ( Chaudoir, 1857) . It can be easily distinguished on the basis of prototum lateral margin continousely sinuate towards postero-lateral angles; pronotum disc area faintly impressed with transverse wrinkles; elytra opaque, striae obsolete but distinctly punctate, intervals flat. In H. obscurus , pronotum lateral margin slightly deflected outward before posterior-lateral angles; pronotal disc area deeply embossed with transverse wrinkles; elytral striae deeply marked and distinctly punctate, intervals slightly concave. During this current study, this species was recorded from the Tharparker desert. It is widespread from India to Eritrea.

Distribution. India (Uttar Pradesh), Pakistan (Azadbukhsh & Rafi 2017), Sri Lanka (Anichtchenko 2017).

Figures

FIGURE 10. Dorsal habitus (a) Chlaenius (Stenochlaenius) dostojevskii Tschitscherine, 1896 imaged from NHMUK collection; (b) Harpaglossus opacus (Chaudoir, 1857) imaged from NHMUK collection.