Mangrovomyia naserzadehae, Grichanov & Gilasian, 2023

Grichanov, Igor Ya. & Gilasian, Ebrahim, 2023, Mangrovomyia, a new genus of long-legged flies from Iranian mangroves (Diptera: Dolichopodidae: Hydrophorinae), Zootaxa 5239 (3), pp. 395-407 : 397-401

Mangrovomyia naserzadehae sp. nov.

( Figs 1–3 )

Diagnosis. Frons without short setae between eyes; antenna with postpedicel yellow ventrally at base; mesonotum with 7–10 acrostichals and 8 strong dorsocentrals on posterior half; katepisternum without setae; femora mainly greenish black; fore tibia with thin, black apical spines.

Description. Male ( Fig. 1A ). Body length 5.6 mm; wing 4.7 x 1.4 mm; antenna 0.6 mm. Head. Postcranium, vertex, frons and face greenish black, covered with weak grey pruinosity; head (excluding proboscis) slightly wider than high in anterior view ( Fig. 1B ); all setae white; postoculars forming single row of setae around posterior orbit; lower postoculars short; ventral postcranium with many short sparse setae; frons without additional setae; clypeus wider than face (0.47/ 0.36 mm) and distinctly tectiform, covered with numerous white setae; palpus elongate-ovate, brownish yellow, with grey pruinosity and yellow setae; proboscis brown-black and rather stout ( Fig. 1C ); antenna mostly brown-black with scape and pedicel ventrally yellow, postpedicel ventrally at base yellow ( Fig. 1D ); pedicel simple, with corona of short white setae; postpedicel trapezoidal, bare, appearing bi-segmented, slightly longer than high at base (0.27/ 0.22 mm); basal part of postpedicel covering apical part dorsally with narrow process; apical part of postpedicel subtriangular (median view; Fig. 1E ); arista-like stylus shorter than postpedicel, bi-segmented, apical or strictly preapical, short pubescent; length (mm) of scape, pedicel, postpedicel, arista-like stylus (aristomeres 1 and 2), 0.11/0.07/0.27/0.06/0.14. Thorax. Mesonotum, scutellum, and pleura dark bluish green, covered with weak grey pruinosity; all setae white; mesonotum with 7–10 acrostichals on posterior half, greatly decreasing in size anteriorly; 8 strong dorsocentrals on posterior half, greatly decreasing in size anteriorly; anterior half of mesonotum covered irregularly with numerous short setae ( Fig. 2I ); scutellum with 2 pairs of strong marginal bristles and several short setae dorsally; proepisternum with a few lower and 1 upper setae; notopleuron without short setae. Legs. Coxae and femora mostly greenish black, trochanters and knees brownish yellow, tibiae and tarsi yellow-brown to blackish brown; legs including fore and mid coxae densely covered with white setae, without black vestiture; fore coxa without strong bristles; hind coxa with several white lateral setae, without bristle; legs with strong black bristles and black setae as noted below; fore femur ( Fig. 2A ) strongly swollen, with about 7 short anteroventral bristles in apical half, with black preapical ventral tooth ( Fig. 2B ); fore tibia mostly swollen, narrow at base, with subbasal ventral brown tooth, 1 ventral and 2 posterior short apical spines ( Fig. 2C, D ); fore basitarsus with ventral row of 8–10 short spinules, with 1 anteroventral and 1 posteroventral apical seta; fore tarsomeres 2–4 each with 1 anteroventral and 1 posteroventral apical brown seta; fore tarsomere 5 with large pulvilli and strongly curved claws; mid femur ( Fig. 2E ) weakly swollen, with anterodorsal row of 4 short bristles on apical half; mid tibia ( Fig. 2F ) with 2–3 anterodorsal, 3–4 posterodorsal, 2–3 anteroventral, 2–3 posteroventral, 5 apical bristles; mid basitarsus with 3 anteroventral and 5 apical setae; tarsomeres 2–4 each with a few short setae; tarsomere 5 with white pulvilli and black claws; hind femur ( Fig. 2G ) distinctly swollen, slightly curved, with 3 anteroventral preapical bristles and about 5 anterodorsal bristles in middle; hind tibia ( Fig. 2H ) gradually swollen in distal half, with 3 anteroventral bristles distally and 2 fine white dorsoapical setae, longer than diameter of tibia; hind basitarsus with 3 anteroventral and 5 apical setae; tarsomeres 2–4 each with a few short setae; tarsomere 5 with white pulvilli and black claws; femur, tibia and tarsomere (from first to fifth) length (mm): fore leg: 1.38/1.05/0.46/0.13/0.12/0.15/0.17, mid leg: 1.33/1.45/0.88/0.28/0.19/0.13/0. 19, hind leg: 1.87/1.67/0.77/0.27/0.19/0.15/0.18. Wing ( Fig. 3A ). Hyaline, veins yellow; costa with mainly black setulae, with white setulae at base ( Fig. 2J ); R 1 slightly thickened, long, reaching costa behind mid-length of wing; lengths of costa between R 2+3 and R 4+5 and between R 4+5 and M 1 (in mm), 0.39/0.26; crossvein dm-m straight; length of dm-m versus apical part of M 4, 0.33/0.49; one male paratype with M 1 and M 4 bearing short stub-veins in middle of basal part ( Fig. 2K ); anal lobe wide; anal angle acute; lower calypter yellow, with whitish cilia; halter pale yellow. Abdomen ( Fig. 3B ). Tergites 1–5 wide and rounded, mostly shiny blackish green, with weak pruinosity; tergites covered with short white vestiture, each with row of white bristles near tergal margins; sternites 2–5 well developed, blackish green, with longitudinal median suture and short setae; tergite 6 bare and short; segment 7 bare, reduced to narrow band; sternite 8 ovate with short setae, hardly visible dorsally; tergites 6, 7, sternite 8 and hypopygium mostly retracted under tergite 5; epandrium short, subrectangular (lateral view; Fig. 3C ), 2 times higher than long, 2 times wider than long; hypopygial foramen basal in position; hypandrium large, with rounded apex (lateral view), triangular (ventral view; Fig. 3D ), fused to epandrium; phallus internal with simple narrow apex; epandrial lobe long, finger-like, arising near base of and lying along hypandrium, with 2 long dorsal and 1 apical setae; surstylus long, finger-like, standing at right angle to lateral side of hypandrium (ventral view; Fig. 3F ), with 5 strong apical and preapical setae; cercus brownish, subtriangular, and covered with strong setae on outer side.

Female ( Fig. 3G ). Body length 5.6 mm; wing 4.7 x 1.4 mm. Similar to male in all respects except as noted: tibiae darker; fore and mid tibiae yellowish-orange in basal 1/3 or 1/4, hind tibia black, orange at base; tarsi brownishblack from tip of basitarsus.

Etymology. The name of the new species is dedicated to the collector of the holotype, Dr. Hiva Naserzadeh (Iranian Research Institute of Plant Protection, Tehran).

Type material. HOLOTYPE J, labelled: “ Iran, Bushehr Prov., Asaluyeh, Nayband , next to Mangrove forest , – 10 m, 27°24′70″N, 052°40′9.0″E, 6–8.xi.2021, light trap, H. Naserzadeh leg.” ( ZIN) . PARATYPES: Iran: 1 J, same data as for holotype ( ZIN); 1 J, 4 ♀♀, Hormozgan Prov., Sirik, Khur-e-Azini, Azini wharf mangrove swamps, 0 m, 26°19′41.3″N, 057°06′22.3″E, 12.xi.2022, yellow tray trap, M. Mofidi leg. ( HMIM) .

Figures

FIGURE 1. Mangrovomyia naserzadehae sp. nov., male. A. Habitus. B. Head, anterior view. С. Head, lateral view. D. Antenna, median view. E. Antenna, lateral view.

FIGURE 2. Mangrovomyia naserzadehae sp. nov., male. A. Fore leg, posterior view. B. Fore knee. С. Fore tibia and basitarsus, anterior view. D. Fore tibia and tarsus, dorsal view. E. Mid femur, anterior view. F. Mid tibia and tarsus, anterior view. G. Hind femur, anterior view. H. Hind tibia and tarsus, anterior view. I. Mesonotum, dorsal view. J. Wing base. K. Wing, middle part. Abbreviations: vts—vertical seta; pvts—postvertical seta.

FIGURE 3. Mangrovomyia naserzadehae sp. nov., male (A–F), female (G). A. Wing. B. Apex of abdomen, lateral view. С, E. Hypopygium, lateral view. D. Hypopygium, ventrolateral view. F. Hypopygium, ventral view. G. Habitus. Abbreviations: cerc—cercus; epand—epandrium; epand lb—epandrial lobe; for—epandrial foramen; hypd—hypandrium; ph—phallus; sur— surstylus.