Bembecia vulcanica ( Pinker, 1969 )

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 : 84

Bembecia vulcanica ( Pinker, 1969)

5 exuviae— 2 males, 3 females (Tenerife 1994).

Length and width: 9.62–17.61× 2.73–4.63 mm (average: 14.7× 3.7 mm).

Frons slightly elongated in dorsal view. Frons with a long, wrinkled depression. Frontal setae situated slightly behind level of lateral angles of frons in dorsal view.Anterior end of frons often has a wrinkled mound. Central ridge enlarged, terminates with a T-shape ( Fig. 8a ). Head projection blade large, pointed and distinctly curved in lateral view, forward with a small frontal tubercle. Dark margin robust. Frons rises rather steeply from projection blade in lateral view. Lateral depression on head relatively narrow and caudoventrally concave ( Fig. 8b ). Distance between setae Cl 2 from 4 to 4.5× greater than distance between C1 2 and Cl 1. Setae Cl 1 and Cl 2 situated close to each other. Labrum truncate for a greater distance and with concave lateral sides ( Fig. 8c ). Cremaster slightly pointed and shorter than anal suture in male. In female cremaster approximately equal in length to anal suture. Anal area flat ( Fig. 8d ).

Diagnosis. Head projection directed forward with a small frontal tubercle in B. vulcanica , similar head projection absent in other study species.

Biology. Univoltine. Larval host-plants are Fabaceae : Bituminaria bituminosa (L.) C.H.Stirt. and Lotus campylocladus Webb & Berthel , L. hillebrandii H.Christ.

Distribution. Endemic to Canary Islands ( Laštůvka & Laštůvka 2001).

Figures

FIGURE 8. Morphology of Bembecia vulcanica pupa: a. Dorsal view of frons, b. Lateral view of frons, c. Labrum and vicinity, d. Abdominal end ventrally (female). Scale bar: a, c—0.5 mm; b, d—0.2 mm.