Bembecia ichneumoniformis (Denis & Schiffermüler, 1775)

Bąkowski, Marek & Fajfer, Daniel, 2019, Morphology of pupae of five species of the genus Bembecia - group ichneumoniformis (Lepidoptera: Sesiidae), Zootaxa 4638 (1), pp. 81-94 : 83

Bembecia ichneumoniformis (Denis & Schiffermüler, 1775)

26 exuviae— 12 males, 14 females ( France, Germany, Poland 1992–2003).

Length and width: 12.8–19.5× 3.1–5.5 mm (average: 16.1× 4.3 mm).

Area of head projection blade prolonged and fairly sharply pointed in dorsal view, its length is slightly longer than half of its width. Frontal setae situated behind level of lateral angles of frons in dorsal view. Frons less tapered caudad from its lateral angles in dorsal view ( Fig. 5 a ). Head projection blade elongated and pointed in lateral view. Frontal dark margin robust. Lateral depression on head relatively narrow and caudoventrally concave. Frons rises from it only slightly ( Fig. 5b ). Labrum truncated at end and with straight sides. Distance between clypeal setae C1 2 from 3.5 to 4× greater than distance between C1 2 and Cl 1. Setae Cl 1 and Cl 2 situated close to each other ( Fig. 5c ). Cremaster relatively roundly pointed at end, anal suture distinctly shorter than cremaster in male, approximately equal in length to anal suture in female ( Fig. 5d ).

Diagnosis. Clypeal setae C1 2 in B. ichneumoniformis and B. vulcanica distinctly remote from each other. The both species differs in present of frontal tubercle in B. vulcanica , absent in B. ichneumoniformis .

Biology. Univoltine or biennial. Host plants—Fabaceae: Anthyllis vulneraria L., Bituminaria bituminosa (L.) C.H.Stirt., Dorycnium spp. Hippocrepis spp., Lotus spp., Tetragonolobus spp.

Distribution. Europe, European Russia, Caucasus, Transcaucasia, Turkey, Iran ( Špatenka et al. 1999).

Figures

FIGURE 5. Morphology of Bembecia ichneumoniformis pupa: a. Dorsal view of frons, b. Lateral view of frons, c. Labrum and vicinity, d. Ventral abdominal end (male). Scale bar: a, c—0.5 mm; b, d—0.2 mm.