Carabus (Morphocarabus) odoratus antropovi

Obydov, Dmitry, 2007, A natural interspecific hybrid between Carabus (Morphocarabus) odoratus Motchulsky, 1844 and Carabus (Carabus) arvensis Herbst, 1784 (Coleoptera: Carabidae), Baltic Journal of Coleopterology 7 (2), pp. 199-203 : 200-202

Carabus (Morphocarabus) odoratus antropovi

Shilenkov, 1996 ( Fig. 1b) X Carabus (Carabus) arvensis conciliator Fischer von Waldheim, 1822 ( Fig. 1c)

Body length is 16.5 mm (including mandibles), body width is 6.6 mm.

Body more convex than in C. odoratus antropovi but less convex than in C. arvensis conciliator .

Head not thickened; ratio width of pronotum/ width of head 2.20; eyes prominent. Mandibles less incurved, shorter and broader than in C. odoratus antropovi but longer and narrower than in C. arvensis conciliator ; surface of mandibles smooth. Frontal furrows short and shallow, inside with few coarse wrinkles as in C. arvensis conciliator ; frons, vertex and neck with coarse punctures as in C. odoratus antropovi and with fewer coarse wrinkles as in C. arvensis conciliator ; laterally vertex with coarse wrinkles as in C. arvensis conciliator . Labrum wider than clypeus, moderately notched as in C. arvensis conciliator , with two lateral setae. Antenna protruding beyond the base of pronotum by four apical joints, longer than in C. arvensis conciliator but shorter than in C. odoratus antropovi ; palpi shorter than in C. arvensis conciliator and C. odoratus antropovi , slightly dilated; penultimate joint of the maxillary palpi slightly shorter than the last joint; penultimate joint of the labial palpi with two setae. Mentum tooth triangular broad as in C. odoratus antropovi , shorter than lateral lobes; submentum with two setiferous pores.

Prothorax narrower than in C. arvensis conciliator and C. odoratus antropovi ; ratio width/ length 1.72. Pronotum relatively convex as in C. arvensis conciliator , with dense coarse punctuation; median longitudinal line distinct; basal foveae not deep as in C. arvensis conciliator , inside with dense coarse wrinkles and punctures. Lobes of hind angles short, evenly rounded. Sides of pronotum narrowly margined and bent upward posteriorly as in C. arvensis conciliator , lateral margin with two setae.

Elytrae oval, more convex than in C. odoratus antropovi but less convex than in C. arvensis conciliator ; widest before middle; shoulders prominent as in C. arvensis conciliator , not so rounded as in C. odoratus antropovi ; sides of elytrae broadly margined. Ratio length/width 1.37; ratio width of elytrae/width of pronotum 1.53. Elytral sculpture exactly intermediate between elytral sculpture of C. odoratus antropovi and C. arvensis conciliator (Fig.4); primary elytral foveoles distinct.

Abdominal sternites smooth, metepisternum with sparse fine punctures, not longer than its width; sternal sulci indistinct as in C. arvensis conciliator . Legs of normal length, not as long as in C. odoratus antropovi ; anterior tarsi with four dilated segments bearing hairy pads.

Coloration greenish-bronze; antennae, legs and ventral body surface black.

Distribution. South Siberia, eastern Tuva, upper level of Naryn River Valley, 1900 m.

Habitat. The specimen was collected under a stone in a stone field.

a). Carabus (Morphocarabus) odoratus antropovi X Carabus (Carabus) arvensis conciliator interspecific hybrid;

b). Carabus (Morphocarabus) odoratus antropovi ;

c). Carabus (Carabus) arvensis conciliator . All specimens from eastern Tuva, upper level of Naryn River Valley .

Obydov D.