Omphra atrata ( Klug, 1834 )

Raj, Shiju T., Sabu, Thomas K. & Danyang, Zhao, 2012, The apterous endemic genus Omphra Dejean (Coleoptera: Carabidae: Helluonini) of the Indian subcontinent: taxonomy with notes on habits and distributional patterns, Insecta Mundi 2012 (206), pp. 1-15 : 9-10

Omphra atrata ( Klug, 1834)

Figures 5 , 10 , 14

Omphra atrata (Klug) ; Reiche 1843: 330; Andrewes 1921 (b): 346; Chopra 1924: 145; Andrewes 1927: 101; 1930: 236; Csiki 1932: 1577; Lorenz 2005: 511; Zhao et al. 2008: 371.

Helluo atratus Klug, 1834: 72 .

Description. Color. Dorsal side black, ventral side brownish red. Labrum and mentum brownish red, coxae and trochanter black or brownish red, legs black. Dorsal and ventral body setae black or brownish red.

Head. Labrum transversely not extended. Clypeus with 6-8 setae. Mentum rectangular; median tooth with 3 setae, base of mentum with 4 setae. 4 th palpomere of labium and maxilla dilated. Last antennomere elongate oval.

Pronotum. Slightly convex, widest before or behind middle. Lateral margin weakly sinuate towards base.

Scutellum. Not punctate.

Elytra. Elongate oval, widest behind middle. Humerus pronounced. Intervals weakly convex. Apex truncate, without emargination.

Genitalia. Male: Apical lamella of aedeagus narrow and pointed at apex. Female genitalia unknown.

Measurements. Male (n=5), TL = 14.0 and 15.0, TW = 4.9 and 5.3, PL = 3.1 and 3.3, PW = 3.8 and 4.1, EL = 8.0 and 9.0.

Specimens examined (n=5). Syntypes. INDIA: West Bengal, No. 576, 1 male ( ZMHB) ; INDIA: Deccan, Coll. Chaudoir ex coll. Reiche, 1 male ( MNHN) ; Eastern India, ex coll. Chaudoir, 1 male ( MNHN). INDIA: West Bengal, the number 576, 1 male ( ZMHB). Locality unknown, Collect. Plason. 1 male ( NHMW) .

Distribution. India.

Remarks. Omphra atrata is most similar to O. drumonti n. sp. having truncate and not emarginated elytral apex. It is distinguished from O. drumonti n. sp. by the presence of a slightly convex pronotum, pronounced elytral humerus and reddish brown anterior margin the of abdominal sternites.

Figures

Figures 2–8. Habitus of Omphra species. 2) O. hirta syntype. 3) O. pilosa syntype. 4) O. rufipes syntype. 5) O. atrata syntype. 6) O. complanata holotype. 7) O. rotundicollis holotype. 8) O. drumonti n. sp. holotype.

Figures 9–12. Elytral apex. 9) Pointed and not emarginate. 10) Straight and not emarginate. 11) Oblique and weakly emarginate. 12) Straight and deeply emarginate.

Figures 13–14. Last antennomere 13) oval and 14) elongate oval.