Atomosia jagua, Scarbrough & Perez-Gelabert, 2006

Scarbrough, Aubrey G. & Perez-Gelabert, Daniel E., 2006, A review of the asilid (Diptera) fauna from Hispaniola with six genera new to the island, fifteen new species, and checklist, Zootaxa 1381, pp. 1-91 : 28-31

Atomosia jagua sp. nov.

( Table 1, Figs. 13–17)

Male. Black, white tomentose, white setose, legs black. Measurements, body 5.7–6.3 mm; wing 4.7–5.1 mm. Head: White tomentose, mostly white setose. Antenna black, mostly or entirely black setose, scape medioventrally with one long bristly seta; scape slightly longer than pedicel, flagellum ( Fig. 13) about 1/3 longer than pedicel and scape combined; flagellum incised at apical 1/3 dorsally, dorsal corner usually angular, sometimes with short scale-like process; flagellum apically narrowed and slightly curved ventrally, white sensory pad elongate and tapered apically, about 1/3 as long as flagellum. Ocellar tubercle with 2 long, apically divergent, black setae. Occiput thin, brownish-gray tomentose dorsally, white setose; postocular bristles, stout, whitish.

Thorax. Black, white tomentose, white setose, bristles and setae mostly whitish. Scutum and scutellum with blue reflections, minutely punctate with short, white, recumbent setae, setae about as long as pedicel, none longer or denser posteriorly; scutum with narrow anterior and lateral margins gray tomentose; lateral bristles and dorsocentral setae black; latter about as long as pedicel; postalar callus reddish-brown. Scutellum with 2 stout whitish marginal bristles, slightly shorter than scutellum medially. Anatergal bristles and sparse setae white, or mixed black and white. Pleura entirely white tomentose, vestiture white; one long, stout, black or white pleural bristle, as long as anepisternum. Halter yellowish, base brownish narrowly.

Wing: Hyaline, iridescent; brown microtrichose, basal cells partly amicrotrichose; veins brownish, yellowish-brown. Cell r 4 wide apically, vein R 4 at or just above wing tip; cell r 5 narrowly open, diameter usually less than length of r-m, sometimes petiolate with veins R 5 and M 1 fused at or just before wing margin. Crossvein r-m just before middle of d cell. Cell m 1 with sides parallel to wing margin, vein M 2 slightly convergent apically; cell m 3 with apex at, just before or beyond base of m 1.

Legs: Blackish, vestiture pale, sparse black bristles on tibiae, mostly hind tibia. Coxae gray tomentose. Narrow base and apex of femora and narrow base of femora and tibiae reddish or yellow; basal 1/3 of fore tibia sometimes pale. Tarsi black with mostly black vestiture; fore and middle tarsi with 2 yellowish bristles basally, dorsal setae black, except laterally on basal tarsomere of fore and middle tarsi; dense ventral setae brownish-yellow.

Abdomen: About twice as long and slightly narrower than thorax, sides parallel; black with blue reflections. Tergites coarsely punctate with short recumbent white setae dorsally, black setae medially, longer white setae laterally and ventrally; narrow apical margins of tergites 2–5 gray tomentose; tergites 1–3 or 4 with sparse whitish bristles laterally. Tergite 7 about 1/3 as long as wide, base deeply notched medially. Sternites black white or brownish tomentose with scattered white setae.

Terminalia ( Figs. 14–17): Gonocoxa wide apically. Aedeagus with lateral apodemes, somewhat narrow apically, trifid distiphallus declinate, ejaculatory apodeme clavate, curved apically. Hypandrium triangular, apex wide.

Female. Measurements, body 6.4–7.0 mm; wing 5.4–5.7 mm. Face with long setae just below antenna often brownish. Flagellum about twice as long as scape and pedicel combined; spine just beyond apial 1/3; sensory area 1/4 as long as flagellum.

Types. DOMINICAN REPUBLIC: RD-272 Caseta 1, PN Sierra / de Bahoruco, Independencia / prov. 18 o 16.038'N 71 o 32.691'W / 1,239 m, 14.vii.2004, D.Perez (holotype ♂, USNM) . Paratypes, prov., Pedernales / ca. 35 km. Cabo Rojo / Las Abejas , 1250 m / 26 Aug – Sep. 1988 ~ M.A.Ivie, T.K.Phillips / & K.A. Johnson colrs. ~ Malaise / trap (1 ♂, MAIC) ; Pedernales [province] / ca. 35 km N Cabo Rojo 1250 m / Las Abejas , 26 AUG. 1988 / beating veg., M.A. Ivie / T.K. Philips & K.A. Johnson (3 ♂, MAIC) ; same location and collectors except date 09 SEP1988 (1 ♂, MAIC) ; Pedernales [province], 26 km N Cabo / Rojo , 18-06N, 71-38W [18 o 06'N 71 o 38’W] / 730 m 16 July 1992 ~ C. Young, R.Davidson / S.Thompson, J.Rawlins / mesic deciduous forest / with scattered pines (1 ♂, CMNH) ; Pedernales [province] / ca. 35 km NNW Cabo Rojo / 1430 m, El Aceitillar / 09SEP1988, pine forest / M. Ivie, Phillips & Johnson (1 ♂, MAIC) ; same location and collectors except 1370 km (1 ♂, MAIC) ; prov. Pedernales / ca. 35 km N Cabo Rojo / El Aceitillar Las Abejas / 1250–1430 m 23 AUG1988, M. Ivie, Philips & Johnson (1 ♀, MAIC) ; Pedernales / prov. El Aceitillar / ca. 35 km NNW Cabo Rojo / 23 AUG 1988,1370– 1430 m ~ M.A.Ivie, T.K.Philips / & K.A.Johnson colls (1 ♂, 1 ♀, MAIC) ; Pedernales [province], Las Abeja [s] / 38 km NNW Cabo Rojo, / (18-09W, 71-38W) [18 o 09'W 71 o 38'W] ~ 1440 m 13–16 July 1987 / Robert L.Davidson and J.Rawlins (1 ♀, CMNH) ; same location and collectors except 1250 m, 15 July 1987 (2 ♀, CMNH) ; Peder- / nales prov. ' Las Abejas' 7.3 km NNE Mercedes 18 o 19'N, 71 o 38''W 1100- / 1150 m 23 August 1983 ~ F.M.Harrington / L.D.Weintraub / Collectors (1 ♀, FSCA) ; Pedernales prov., Pasosena, / on rd. to Los Arroyos , 18 o 04. / 829' N 71 o 44.091' W, 69 m, / 17.viii.2006, D.Perez, R.Bastardo (1 ♂, 3 ♀, USNM) ; Pedernales prov., km 13 Rd. / Cabo Rojo, Aceitillar , 18 o 01. / 866' N 71 o 38.806' W, 123 m, / 16.viii.2006, D.Perez, R.Bastardo (night) (9 ♂, 7 ♀, USNM) ; Pedernales prov., 0.7 km N / Cruce Aguas Negras, Mencia , / 18 o 06.956'N 71 o 43.0388'W, 362 m, / 17.viii.2006, D.Perez, R.Bastardo (1 ♂, USNM) ; Peravia prov., Bahía , ~ 5 km / W of Baní, 18 o 17.460'N / 70 o 23.090'W, 90 m, 8.viii. / 2006, D.Perez, R.Bastardo (3 ♂, USNM) . HAITI: Departement / du Sud, Villa Formon / 31 km NW Les Cayes, / S slope Formon / Massif de La Hotte , ~ 18-20N 74-01W [18 o 20'N 74 o 0'W] / 1405 m, 7–8 Sept 1995 R.Davidson, G.Onore, / J.Rawlins, Disturbed / Forest and Field (1 ♂, CMNH) .

Distribution. Independencia, Pedernales, and Peravia provinces in the Dominican Republic and Departement / du Sud, Haiti. Collected in deciduous and pine forests between 730 and 1440 m in elevation from July to September.

Etymology. From the Taino jagua , referring to the black color of aged fruit tree sap [jagua] that was used for body paint and dying cotton material. The name refers to the ground color of this species.

Remarks. Atomosia jagua keys to A. danforthi Curran (1935) but is distinguished by the 2 black ocellar dorsocentral setae and black lateral scutal bristles, reddish-brown postalar callus, black legs, white setose body, and brownish-yellow or reddish base of the hind tarsus. It is similar to A. jimagua in the whitish setose dorsum of the thorax and abdomen but is distinguished by the characters above, those in the key, the long tergite 7, and by the combined characters of the flagellum and terminalia ( Figs. 13–17). In A. jimagua , the sensory area on the flagellum is about 1/2 as long as flagellum, the spine-like dorsal corner of excised notch is as long or longer than the ventral spine, the legs are in part yellow, tergite 7 is strap-like, about 1/4 as long as wide, the gonocoxa is narrow apically, the hypandrium is triangular, and the ejaculatory apodeme is capitate and strongly curved forward ( Figs. 19–22).