Convocheila Barkalov, 2002

Radenković, Snežana, Likov, Laura, Ståhls, Gunilla, Rojo, Santos, Pérez-Bañón, Celeste, Smit, John, Petanidou, Theodora, Steenis, Wouter Van & Vujić, Ante, 2020, Three new hoverfly species from Greece (Diptera: Syrphidae), Zootaxa 4830 (1), pp. 103-124 : 105-107

Subgenus Convocheila Barkalov

Diagnosis. Face along paraface in upper 1/3 covered with long whitish or black pile ( Figs 1 A–B), long as pile around ocellar triangle; eyes usually pilose (in some species without pile: C. candida Vujić et Radenković sp. n., C. paralobi and C. laticornis ); face wide, with facial tubercle nose-like; frons convex; antennal pits separated; basoflagellomere rounded or ellipsoidal, dark-brown/black with reddish markings (except in some specimens of C. paralobi and C. cumanica with entirely black basoflagellomere); pile on scutum and scutellum mixed pale-yellow and black (black pile at notopleural area, at wing bases and on posterior margin of scutellum); pile on metathoracic pleuron long, whitish, and wavy apically; all legs black, except light-brown apical parts of femora, basal 1/3 and apical end of tibiae and ventral surface of tarsi; pile on legs mixed pale-yellow and black; abdomen microtrichose, predominantly covered with long pale pile (except the posterior half of lateral margins of terga 3 and 4 with black pile in some males of C. laticornis and C. hypena (Becker)) . Male genitalia: ventral lobus of gonostylus sickle-shaped ( Figs 2 , 4A ).

In the Mediterranean area, this subgenus comprises besides the four previously mentioned species in Barkalov (2002), C. paralobi , C. cumanica , C. sulcifrons and C. laticornis , also two additional species: C. hypena and C. candida sp. n.

Figures

FIGURE 1. A, C, D male of Cheilosia candida sp. n. B, E male of Cheilosia paralobi. A, B head, lateral view, C head, dorsal view, D, E antennae, lateral view. Scale bar, 1 mm.

FIGURE 2. Gonostylus of male genitalia, lateral view. A Cheilosia latifacies, B Cheilosia hypena, C Cheilosia cumanica. govl—ventral lobus of gonostylus. Scale bar, 0.1 mm.

FIGURE 4. Male genitalia of Cheilosia candida sp. n., lateral view. A male genitalia without surstylus B surstylus. ep—epandrium, hp—hypandrium, ce—cercus, godl—dorsal lobus of gonostylus, arrow pointed dorsal prolongation on godl, govl—ventral lobus of gonostylus. Scale bar, 0.2 mm.