Nephrotoma dominicana Alexander 1970

Nephrotoma dominicana

General coloration of mesonotum yellow, praescutum with 3 chestnut brown stripes, anterior third of median area with sides blackened, lateral stripes straight; knob of halteres brownish black; legs obscure yellow, outer segments brownish black, claws toothed; wings faintly tinted, cell Sc and stigma darker brown, extreme wing tip weakly infuscated; male hypopygium with distal third of outer dististyle long and slender, inner style with beak broadly obtuse, posterior crest produced into an obtuse blade, outer basal lobe a small darkened knob; 8th sternite with dense fringes of long yellow setae, the median membrane densely reticulated.

MALE.—Length about 10–13 mm; wing 9.5–10.5 mm; antenna about 3.8–4.2 mm.

FEMALE.—Length about 14–15 mm; wing 11–12 mm.

Frontal prolongation of head polished yellow, nasus elongate, brownish black, with black setae; palpi brown, basal segment yellowed. Antennae of male relatively long; scape brownish yellow, pedicel and 1st flagellar segment dark brown, remainder of flagellum more blackened; segments only moderately incised, verticils short. Head orange, including the low entire vertical tubercle; occipital brand inconspicuous, pale brown, subtriangular, the anterior end rounded.

Pronotal scutum yellowed on central part, more obscured on sides, scutellum yellow medially and on sides, intermediate areas dark brown. Mesonotal praescutum yellow, with 3 chestnut brown stripes, the broader central area narrowed posteriorly, reaching the suture, lateral borders of anterior third black; lateral stripes straight, chestnut brown, in cases very faint, cephalic end more darkened but not outcurved; scutum with median area broadly yellow, lobes chestnut brown, cephalic part with 2 virtually separate brown marks, lateral end of outer one blackened at suture; scutellum light brown, parascutella yellow; postnotum chiefly yellow, anterior part of disk of mediotergite more fulvous, pleurotergite with a narrow darkened stripe that separates the anapleurotergite from the katapleurotergite; scutellum and mediotergite with sparse short setae. Pleura light yellow, with vague more reddened areas, more evident on anepisternum and ventral sternopleurite. Halteres with stem dark brown, base reddened, knob brownish black. Legs with coxae and trochanters yellow; femora obscure yellow, base clearer, outer end vaguely more darkened; tibiae brownish yellow; tarsi gradually darkening to brownish black; claw of male with a single tooth just before midlength. Wings (Figure 2) very faintly tinted, cell C brownish yellow, Sc and the stigma darker brown; extreme wing tip in cells R3 to M1 weakly infuscated; veins dark brown. About 5 trichia in stigma, lacking in outer wing cells. Venation: cell M1 narrowly sessile; m-cu shortly before fork of vein M4.

First abdominal tergite yellowed, with paired pale brown spots on either side; 2nd tergite yellow, darkened centrally before midlength and near apex; succeeding tergites chiefly dark brown, incisures yellow, more extensive on bases of segments; sternites yellow, restrictedly pale brown at posterior ends, appearing as paired darkenings that are more extensive and confluent on outer segments; hypopygium yellowed. Male hypopygium (Figure 5) with lateral tergal lobes, t, appearing as glabrous blades, the tips obtuse; spinoid setae in two groups, with smaller pegs at margin. Outer dististyles, d, with outer third long and slender; inner style with beak broadly obtuse, lower margin slightly produced and blackened, lower beak black; posterior crest produced into a broadly obtuse blade; outer basal lobe a small darkened knob that is tipped with a few weak setae; aedeagus short and stout, the subtending apophyses subhyaline, long and narrow, tips obtuse. Eighth sternite, 8 s, with posterior border slightly concave, with dense fringes of very long yellow setae with incurved tips, forming conspicuous brushes; additional to the setae, with a central membrane including many microscopic areolae to produce a densely reticulate appearance (not shown in figure).

Holotype, male, Cabrit Swamp, Dominica, 23 February 1965 (Wirth). Allotype, female, South Chiltern, 8–10 December 1964 (Spangler). Paratypes, male, female, with allotype: female, Laboviere, October 1967 (Krauss); male, Pont Casse, 12–14 October 1964 (Spangler).

Nephrotoma dominicana is quite distinct from N. elegantula (Williston), described from Saint Vincent. This has the pattern of the mesonotum with outcurved praescutal stripes and with the tips of the femora and tibiae blackened. Other species from the Greater Antilles include N. circumscripta (Loew), from Cuba and Jamaica, and N. glabricristata Alexander, from Hispaniola (Haiti) and Cuba, both different from the present fly.

Tipula Linné, 1758, p. 585.

Nephrotoma dominicana adalah spesies lalat yang tergolong famili Tipulidae. Lalat ini juga merupakan bagian dari ordo Diptera, kelas Insecta, filum Arthropoda, dan kingdom Animalia.

Lalat ini biasanya tinggal di tempat lembap.

Nephrotoma dominicana là một loài ruồi trong họ Ruồi hạc (Tipulidae). Chúng phân bố ở vùng Tân nhiệt đới.