Empis (Coptophlebia) barbitos Smith, 1971

Esa, C. Daugeron, 2001, Cladistics and taxonomy of the Afrotropical Empis (Coptophlebia) chrysocera-group (Diptera, Empididae), Journal of Natural History 35, pp. 583-616 : 586-588

Empis (Coptophlebia) barbitos Smith, 1971

(®gures 1±3)

Empis (Coptophlebia) barbitos Smith, 1971: 90 .

Afrotropical Empis (Coptophlebia) chrysocera group 587 Type material

HOLOTYPE:, Zimbabwe, Cleveland Dam , Salisbury, at ¯owers of Clematis stanleyi , 15 January 1939, A. Cuthbertson ( NHM).

Description

Male: length of wing 4.8 mm.

Head with occiput blackish to dusted greyish. Ocellar triangle with pair of very short bristles. Face dusted greyish in upper part, shining black in lower part. Antenna blackish. Palpus yellowish. Proboscis long (2.5 times the head height), labrum brownish, labium blackish, strongly sclerotized, with distinct annulations, labella slender, bare. Eyes holoptic, upper ommatidia enlarged.

Thorax blackish to dusted greyish. Antepronotum with a few distinct lateral bristles. Postpronotal lobes subshining dark brown with one distinct basal bristle. Proepisternum bare. Prosternum with a few lateral short bristles. Acrostichals uniserial, ®ne, short. Dorsocentrals uni- to biserial, rather ®ne, short, with one strong, long prescutellar bristle. One strong, long postsutural supraalar. Three strong, long notopleurals. Postalar calli brownish with one strong, long bristle. Scutellum with two strong, long apical bristles, two ®ner, shorter subapicals. Laterotergite with fan of black bristles. Anterior spiracle black, posterior spiracle not visible.

Legs brownish, coxa dusted greyish. Fore femur with short dorsal bristles, ®ne, longer ventrals. Fore tibia with one row of distinct dorsal bristles. First tarsomere of fore tarsus with strong, short ventral bristles. Mid femur with one row of strong dorsal bristles, pennate posteroventrally on apical half. Mid tibia pennate dorsally except at tips, with distinct ventral bristles. First tarsomere of mid tarsus with strong, not very long bristles, especially ventrally. Hind femur with numerous distinct dorsal and ventral bristles, stronger dorsally, pennate posteroventrally at apical tip. Hind tibia with numerous distinct dorsal and ventral bristles, stronger dorsally, pennate dorsally in the middle. Hind tarsus similar to mid tarsus. Each tarsomere of all tarsi with distinct bristles at apical tip.

Wing dark brown. Sc abbreviated. R 41 5 branched at right-angle. Discal cell truncate. M1 abbreviated. M2 abbreviated in the right wing, complete in the left wing. A1 complete. Anal lobe well developed, anal angle rather acute. Halter with brownish base and stem, black knob.

Abdomen very damaged. Brownish at base with several distinct bristles on the ®rst two segments, otherwise silvery dusted (according to the original description). Tergite 7 apparently divided in two lateral parts and a less sclerotized central one. According to the original drawing of postabdomen, sternite 8 developed posteriorly with rounded shape.

Hypopygium (®gures 1±3) very damaged. Cerci broken, apparently made up of anterior reduced rounded lobe (®gure 2) and well-developed posterior lobe bearing distinct bristles (®gure 1). Phallus short, thick (®gure 3).

Female: unknown.

Discussion

E. barbitos belongs to the E. (C.) lyra -complex. It resembles E. lyra in the basic pattern of dusting on the scutum, but the lyre-shaped stripe under the dorsocentrals is not present and the antennae are blackish, not brown-yellowish.

Distribution Southern Africa: Zimbabwe.