Sciapus talebii Kazerani & Grichanov, 2015

Kazerani, Farzaneh, Khaghaninia, Samad, Talebi, Ali Asghar & Grichanov, Igor, 2015, GenusSciapus (Diptera: Dolichopodidae) in Iran, with description of one new species and new records, Acta Entomologica Musei Nationalis Pragae 55 (1), pp. 401-409 : 403-405

Sciapus talebii Kazerani & Grichanov sp. nov.

( Figs 1–8 )

Type locality. Iran, Guilan province, Eshmankamachal, 37°22′03.66″N, 49°57′57.84″E, 10 m a.s.l.

Type material. HOLOTYPE: J, IRAN: GUILAN: Eshmankamachal , 37°22′03.66″N, 49°57′57.84″E, 10 m a.s.l., 22.vi.2010, M. Khayrandish leg. ( TMUC) . PARATYPE: 1J, 16.viii.2010, otherwise same locality data as the holotype ( ICHMM, the mid and hind legs of the paratype are missing).

Diagnostic characters. The new species is taxonomically related to the Caucasian S. richterae Negrobov & Grichanov, 2010 , but having simple fore tarsus (apical segment is enlarged in S. richterae ), different podomere ratios and morphology of hypopygium; nevertheless, both species have free cerci without ventral cercal projection (‘Organ X’), bear peculiar ventral setation on all femora, have no true anterior preapical seta on hind femur, strongly differing from other known Palaearctic species ( GRICHANOV 2007, NEGROBOV & GRICHANOV 2010).

Description. Male. Body length 4.8–5.3 mm, wing length 4.2–4.6 mm, wing width 1.5–1.7 mm, antenna length 1.2 mm, hypopygium length 0.7 mm.

Head. Frons and face densely white pollinose, under antennae 3 times wider than postpedicel height, clypeus and convex epistome separated by distinct transverse suture; proboscis yellowish brown; palpus brownish yellow, with 1 strong black seta at apex and numerous yellow hairs; antenna with scape and pedicel yellow, pedicel with long and short black hairs, postpedicel brown, yellow at base and higher than long with short yellow hairs; stylus dorsal, brown and long, shortly haired ( Fig. 3 ); postocular setae entirely white.

Thorax. Metallic green, grey pollinose; mesonotum with black setae; 6 long dorsocentrals; acrostichals biseriate along whole mesonotum length; scutellum with 2 strong median and 2 fine lateral setae; legs yellow, mid coxa with black spot at basal half, tarsi brown from tip of basitarsus, coxae with long yellow hairs, fore coxa with a few short yellow setae at base and long yellow setae at apex; fore femur with 2 rows of long white hairs ( Fig. 5 ), longer than femur width ventrally and posteroventral rows of shorter black hairs; fore tibia with 2 rows of yellow ventral setae which are not longer than width of tibia ( Fig. 4 ); mid femur with a row of long black ventral setae, and with long fine white anteroventral cilia, longer than width of femur ( Fig. 6 ), anterior preapical seta not present; mid tibia with 1 small anterodorsal and 1 small middorsal setae, 2 long apicals; tarsomeres simple, with short ventral and apical setae; hind femur with a row of long yellow setae ventrally; hind tibia and basitarsus with short black setae; fore leg length ratio (from tibia to tarsomere 5): 52/65/28/18/16/11, mid leg: 70/65/20/14/8/6, hind leg: 97/34/30/16/10/6; wing hyaline; costa straight; ratio of part of costa between R 2+3 and R 4+5 to that between R 4+5 and M 1: 27/3; cross-vein dm-cu straight; M 2 and CuA distinct, anal lobe well developed; anal angle acute; lower calypter with yellow cilia; halter yellow.

Abdomen. Metallic green ( Fig. 1 ), with mainly black hairs, length of hairs at the lateral and hind margins about half length of tergites; 1 st tergite with yellowish-white hairs; sternites with yellowish-white hairs ( Fig. 2 ).

Genitalia. Hypopygium dark; hypandrium long and slender; surstylus deeply bifurcated, with ventral (outer) arm strongly curved, broad, widened ventrally in distal third and pointed at apex, with a strong, flattened subapical seta, dorsal (inner) arm thin, weakly curved ( Fig. 7 ); epandrial lobe long and slender, with 2 long apical seta; cercus free, long, with long black setae, 5 times longer than wide at base ( Fig. 8 ), no ventral projection (‘Organ X’).

Female. Unknown.

Etymology. This new species is dedicated to Dr. Ali Asghar Talebi (Associate Professor of Tarbiat Modares University), in recognition of his contribution to the knowledge of insects in Iran.

Habitat. The types were collected in temperate rain forests, i.e. broadleaf deciduous forest consisting mainly of beech, hornbeam, oak, maple and alder.

Distribution. Iran, Guilan Province.

Figures

Figs 1–6. Sciapus talebii Kazerani & Grichanov sp. nov. 1 – male habitus, lateral view; 2 – dorsal view of abdomen; 3 – lateral view of head; 4 – 3rd–5th segments of fore tarsus; 5 – fore femur; 6 – mid femur.

Figs 7–8. Sciapus talebii Kazerani & Grichanov sp. nov. 7 – hypopygium, left lateral view; 8 – dorsal view of cerci, surstyli and epandrial lobes.