Argyrochlamys hajiesmaeiliani, Grichanov & Gilasian, 2023

Grichanov, I. Ya. & Gilasian, E., 2023, Three new species of the genus Argyrochlamys Lamb, 1922 (Diptera: Dolichopodidae) from mangroves of Iran and Oman, Russian Entomological Journal 32 (2), pp. 210-220 : 212-213

Argyrochlamys hajiesmaeiliani

Grichanov et Gilasian, sp.n.

Figs 1–6 .

MATERIAL. Holotype ♂, Iran, Hormozgan prov. , Sirik, Azini wharf, 0 m, 26°19´39.9´´N, 057°06´15.7´´E, 13.V.2022, pan trap, Mofidi & Hajiesmaeilian leg. ( ZIN). Holotype in good condition. Paratypes: Iran : 7♂, same data as for holotype ( HMIM and ZIN; one male terminalia dissected and stored in glycerin in microvial pinned with the specimen); 1♂, Iran, Hormozgan Prov., Qeshm Island ,

DoKuhak, 0 m, 26°59´5.0´´N, 056°11´19´´E, light trap, 4.XI.2021, E. Gilasian leg. ( ZIN); 2♂, Iran, Hormozgan prov., Gabrik protect- ed area, Keyki , 0 m, 25°41´49.7´´N, 058°30´32.9´´E, 15. V .2022, light trap, M. Mofidi & A. Hajiesmaeilian leg. ( HMIM and ZIN); 1♂, Iran, Bushehr Prov., Asaluyeh, Nayband, next to Mangrove forest , – 10 m, 27°24´70´´N, 052°40´9.0´´E, light trap, 6–8.XI.2021, H. Naserzadeh leg. ( ZIN; male terminalia dissected and stored in glycerin in microvial pinned with the specimen); 7♂, Oman, Barr al-Hikman peninsula, 300 km S Muscat, 20°44´24´´N, 58°41´45.6´´E, yellow pan trap, 19–24.XI.2011, P.S. Tomkovich leg. ( ZMUM) .

DESCRIPTION. Male ( Fig. 1 ). Length (mm): body 3.3– 3.8, wing 2.9–3.0/1.1–1.2, antenna 0.8–0.9. Setae on body and legs are black except as noted below. Head ( Fig. 2 ) wider than high; frons, face and postcranium densely white pollinose; frons 1.5 times wider than high; one strong black vertical seta bend forward, one shorter yellow postvertical, a pair of strong black ocellar setae present; eyes with short hairs; postocular setae yellow, uniseriate; upper and lower postoculars stronger than lateral setae; face glabrous, broad, widest under antennae, 1.4–1.6 times wider than height of postpedicel, clypeus small, almost reaching lower margin of eyes; antenna ( Fig. 3 ) as long as height of head; yellow-orange; scape and pedicel simple, with short setulae; postpedicel greyish at apex, elongate-triangular, 1.7–1.9 times as long as high, with acute apex and very short hairs; arista-like stylus nearly mid-dorsal, black, about 1.3 times longer than postpedicel, with microscopic hairs; length (mm) of scape, pedicel, postpedicel, stylus (stylomeres 1 and 2), 0.10/0.07/ 0.41/0.11/0.40; palpus and proboscis small, palpus yellow with black setae, proboscis brownish, with yellow and brownish cilia. Thorax mostly greenish black, grey pollinose, with yellow humeral callus, scutellum and metapleuron; 6 strong dorsocentral setae with 5 th seta shifted towards median axis; 2 rows of strong acrostichals; 2 strong notopleural, 1 strong humeral, 1 posthumeral setae present; proepisternum with 1 strong black seta above fore coxa; scutellum with 2 strong setae and 2 lateral hairs. Legs whitish-yellow, with apex of hind tibia and tarsus from middle of basitarsus more or less dark; all coxae yellow; fore and mid coxae with several black setae anteriorly; hind coxa with 1 strong external seta in middle; fore tibia with 2–3 strong anterodorsal, 2–3 posterodorsal bristles; fore femur, tibia and tarsomere (from first to fifth) length (mm): 0.89/0.84/0.40/0.19/0.16/0.14/0.14; mid femur with 1 anterior subapical bristle; mid tibia with 3 anterodorsal, 3 posterodorsal, 1 strong and 1 weak ventrals at middle and 4–5 apical bristles; segments 1–4 of mid tarsus each with short apical setae; mid femur, tibia and tarsomere (from first to fifth) length (mm): 1.07/1.29/0.55/0.37/0.32/ 0.24/0.18; hind femur ( Fig. 4 ) with 1 anterodorsal preapical bristle, 1 small anteroventral preapical, row of sparse ventral setae, half as long as femur height, and row of long dense dorsal setae, nearly as long as femur height; hind tibia with 4 anterodorsal, 4 posterodorsal, 3–4 apical bristles; hind basitarsus with 1 short basoventral seta; tarsomeres 1–4 each with apicoventral setae; hind femur, tibia and tarsomere (from first to fifth) length (mm): 1.22/1.46/0.46/0.57/0.41/0.32/0.21. Wing hyaline, simple; veins brownish yellow; R 1 reaching nearly 2/5 of wing; R 2+3 almost straight; length of costa between R 1, R 2+3, R 4+5 and M 1+2 (mm), 0.93/0.77/0.05 (holotype); R 4+5 mainly straight, slightly curved posteriad in distal 1/4; M 1+2 with right angular sinuation in middle of distal part, with short stublike vein, joining costa before wing apex; crossvein dm-m straight, forming right angles with longitudinal veins; length of dm-m and distal part of M 4, 0.32/0.71; posterior wing margin evenly convex; anal vein weak; anal lobe pronounced; anal angle obtuse; lower calypter yellow with white cilia; halters yellow. Abdomen conoid (dorsal view), mostly yellow, weakly whitish pollinose; tergites 4 and 5 widely black dorsally, yellow ventrally and along posterior margin; tergite 3 with or without small brown spot dorsally in middle; tergite 6 hardly visible; segment 7 small, glabrous; segment 8 yellow, with several long dark setae; epandrium and appendages symmetric, yellow ( Figs 5–6 ); hypandrium deeply bifurcated, with narrow curved lobes, pointed at apex; phallus narrow, pointed; distoventral epandrial lobe fused with epandrium, with 3 pedunculate setae; 1 epandrial seta; postgonite narrow, strongly curved ventrally, pointed at apex; surstylus with 2 nearly straight narrow lobes of unequal length; ventral lobe short, with 2 simple ventral setae, 1 long and 2 short thickened dorsal setae at apex; dorsal lobe with very long basidorsal seta, 1 long subapical simple seta, 2 short thick seta and few setulae at apex; cercus yellow, 0.8 times as long as epandrium, with short hairs and strong black setae, narrow, with rounded apex.

Female. Unknown.

ETYMOLOGY. The name of the new species is dedicat- ed to one of the collectors of the type series, Dr. Abolfazl Hajiesmaeilian (Iranian Research Institute of Plant Protection, Tehran).

DISTRIBUTION. Palaearctic: Iran (Bushehr, Hormozgan); Afrotropical: Oman.

DIAGNOSIS. Argyrochlamys hajiesmaeiliani sp.n. belongs to the A. impudicus species group [ Grichanov, 2010]. The new species keys to A. impudicus , differing from the latter in shorter body; arista-like stylus of antenna about 1.3 times longer than postpedicel; mostly yellow abdomen; distal section of M 1+2 with stublike vein; costal section between R 2+3 and R 4+5 0.8 times as long as costal section between R 1 and R 2+3; hypandrium with deeply bifurcated symmetrical lobes; cercus 0.8 times as long as epandrium. Argyrochlamys impudicus differs in longer body; arista-like stylus of antenna nearly 2.5 times longer than postpedicel; mostly black abdomen; distal section of M 1+2 without stublike vein; costal section between R 2+3 and R 4+5 1.2 times as long as costal section between R 1 and R 2+3; hypandrium with asymmetrically thick and long lobes; cercus about as long as epandrium [ Lamb, 1922; Brooks, 2005]. Argyrochlamys hajiesmaeiliani sp.n. males have very similar habitus and hypopygium morphology with A. nigrescens sp.n. These species differ from each other in mainly morphometric characters (see diagnostic Table in the Discussion section). Nevertheless, the abdomen has tergites 1–3 mostly or completely yellow in A. hajiesmaeiliani sp.n. and only tergite 2 mostly yellow in A. nigrescens sp.n.

Figures

Figs 1–6. Argyrochlamys hajiesmaeiliani, sp.n., male: 1 — habitus; 2 — head; 3 — antenna; 4 — hind femur, anterior view; 5 — hypopygium, lateral view; 6 — details of hypopygial appendages. Рис. 1–6. Argyrochlamys hajiesmaeiliani, sp.n., самец: 1 — внеШний вид; 2 — голова; 3 — усик; 4 — Заднее бедро, вид спереди; 5 — гипопигий, вид сбоку; 6 — детали придатков гипопигиЯ.