Elcaribe glabrus Webb, 2006

Webb, Donald W. & Metz, Mark A., 2006, A Revision of the New World Genera Brachylinga Irwin and Lyneborg and Lysilinga Irwin and Lyneborg (Diptera: Therevidae: Therevinae) with the Description of a New Genus, Elcaribe Webb, Zootaxa 1288 (1288), pp. 1-241 : 172-175

Elcaribe glabrus Webb spec. nov.

(Figs. 224, 238, 252, 266, 280, 294, 308, 322, 336, 348, 356)

Etymology

Glaber (Latin) = hairless, bald, smooth. This name is used as an adjective and refers to the lack of macrosetae on the ventral surface of the gonocoxite.

Diagnosis

Elcaribe glabrus is taxonomically associated with E. bahamaensis in lacking an anterodorsal patch of dark, short setae on the gena; in lacking anteroventral and posteroventral macrosetae on the midfemur; in lacking elongate, dark macrosetae along ventromedial margin of the gonocoxite ( Fig. 238); and in having the gonocoxite in ventral and lateral views ( Figs. 238, 266) broad with only the apical fourth narrow and attenuate. Elcaribe glabrus differs from E. bahamaensis in having the posterior margin of the hypoproct (Fig. 224) expanded, rounded laterally; the gonocoxite in ventral ( Fig. 238) and lateral ( Fig. 266) views broad over the basal three­fourths of its length then becoming attenuate with short, thick macrosetae apically; the ventral margin of the gonostylus (Fig. 280) broadly rounded; the ejaculatory apodeme ( Fig. 294) with the anterior half cylindrical, extending slightly beyond anterior margin of dorsal apodeme and in crosssection cylindrical.

Description of holotype male (MEI 030403)

Body length 5.7 mm.

Head. Length 0.70 mm. Ommatidia smaller ventrally and laterally. Frons pruinescence silver gray, brownish gray dorsally; setae dark brown. Antenna/head length 0.76; scape and pedicel dark reddish brown, pruinescence gray, dense, flagellum dark brown with base yellow; scape length 0.18 mm, width 0.12 mm, length/width 1.5, scape/ pedicel length 2.3, scape/flagellum width 0.75, setae dark brown, elongate, yellowish brown setae ventrally; pedicel length 0.07 mm, length/width 0.6; flagellum length 0.28 mm, width 0.16 mm, length/width 1.8, flagellum/scape length 1.6. Parafacial pruinescence brownish gray with dark brown diagonal area dorsally. Maxillary palpus dark reddish brown, apical half dark yellow; length 0.30 mm, length/width 6.0; setae white, elongate. Genal setae white. Occipital setae white becoming whitish gold, appressed, lanceolate dorsally.

Thorax. Macrosetae 3 np, 2 sa, 1 pa, 2 dc, 2 sc. Mesonotum pruinescence dull brown; setae black, elongate intermixed with pale white, lanceolate, appressed setae. Pleuron pruinescence gray; setae white on anepisternum, katepisternum, metanepisternum, laterotergite, and scutellum. Wing. Membrane pale gray; veins pale yellowish brown; length 5.0 mm, length/width 2.9; pterostigma indistinct; cell m 3 closed, petiolate. Halter dark yellow. Legs. Femora dark reddish brown, pruinescence white; ventral setae black ventrally on forefemur, black intermixed with white setae ventrally on midfemur; av 2:0:4, pv 0:0:1. Tibiae dark yellow, apex dark reddish brown. Tarsomeres 1–2 dark yellow, apex dark reddish brown; 3–5 dark reddish brown.

Abdomen. Dark reddish brown, pruinescence white, dense; dorsal setae white, appressed; lateral setae white elongate. Terminalia (MEI 030403). Tergite 8 and epandrium (Fig. 224), sides slightly emarginate, setae dark brown. Hypoproct (Fig. 224) large, broadly rounded posterolaterally, posterior margin slightly emarginate; apicoventral surface flat. Sternite 8 ( Fig. 238), sides rounded, posterior margin rounded. Gonocoxite ventral view ( Fig. 238), basal third bulbous, rounded laterally, basal fourth almost touching medially with distinct basomedial notch, then expanded and rounded medially before tapering apically to attenuate projection with small, expanded apical knob, setae dark yellow with an anterior patch of short, dark yellow setae, dark reddish brown macrosetae apically; dorsal view ( Fig. 252) gonocoxal bridge large; lateral view ( Fig. 266) broad, tapering apically to attenuate projection; ventral lobe ( Fig. 238) lacking ventral spines. Gonostylus (Fig. 280), basodorsal lobe absent; ventral margin broadly rounded, setae dark yellow; short, not extending apically in distinct tuft; fine spines abundant laterally. Aedeagus with dorsal apodeme ( Fig. 294) quadrate, posterolateral margin rounded; ventral apodeme (Fig. 308) broad, anterior margin deeply emarginate, tapering laterally to point, not extending to anterior margin of dorsal apodeme; distiphallus dorsal view ( Fig. 294) short, tapered to rounded point, lateral view ( Fig. 322) curved ventrally at 90° angle, subapical hood absent; ejaculatory apodeme ( Fig. 294) dark yellow, anterior half cylindrical, extending slightly beyond anterior margin of dorsal apodeme, anterior margin rounded, in cross­section cylindrical.

Variation (n=10). Body length 5.0–6.7, 5.7 mm. Thorax. Macrosetae 2–3 np, 2 sa, 1 pa, 2 dc, 2 sc. Legs. Anteroventral macrosetae 1–2:0:1–4; pv 0:0:1.

Female

Similar to male except as follows.

Body length 6.0 mm.

Head. Frons pruinescence brownish gray, ventral fourth silver gray; setae dark brown.

Thorax. Macrosetae 3 np, 2 sa, 1 pa, 2 dc, 2 sc. Legs. Anteroventral macrosetae 3:1:4, pv 0:0:2.

Abdomen. Black, glossy, pruinescence gray on posterior margin of tergites 1–7 becoming wider on posterior tergites; dorsal and lateral setae dark reddish brown. Terminalia (MEI 030397). Anterior margin of sternite 8 ( Fig. 336) with rounded medial projection. Furca (Fig. 348) oval; length 0.66 mm, width 0.23 mm; anteromedial, posteromedial, and anterolateral projections short. Common duct (Fig. 348) shorter than furca. Spermathecal duct (Fig. 348) narrow sac­like posteriorly then becoming thread­like.

Distribution Elcaribe glabrus has been collected in the Dominican Republic ( Fig. 356).

Habitats and phenology

Adults of Elcaribe glabrus have been handnetted in semiarid deciduous forest with pastures; collected in flight intercept trap in deciduous forest; and in blacklight traps. Specimens have been collected in July and October.

Specimens examined

Type specimen. The holotype male of Elcaribe glabrus Webb (MEI 030404) is labeled "DOMINCAN REPUBLIC: Independencia. 4 km S Los Pinos, Loma de Vientos, 475 M. 18–35N, 71–46W, 12 October 1991, R. Davidson, C. Young, S. Thompson, J. Rawlins, semiarid deciduous forest with pastures" and is deposited in the CMNH. PARATYPES. DOMINICAN REPUBLIC. INDEPENDENCIA. 4 km S Los Pinos, Loma de Vientos [18.583, ­71.767], 475 m, 12.X.1991, Davidson, R., Young, C., Thompson, S., Rawlins, J., 13♂ MEI 030378 ( INHS), 030380–2, 030384 ( MEIC), 030386 ( USNM), 030388, 030392–3, 030403, 030411, 030415, 030345, 1♀ 030397 ( CMNH), semiarid deciduous forest with pastures. PEDERNALES. 23.5 km N Cabo Rojo [18.1, ­71.633], 540 m, 13–25.VII.1990, Masner, L., Rawlins, J., Young, C., 1♂ MEI 039673 ( CMNH), flight intercept trap, deciduous forest; 19–25.VII.1990, Masner, L., Rawlins, J., Young, C., 1♂ MEI 030357 ( CMNH), flight intercept trap, deciduous forest; Cabo Rojo, Alcoa [17.904, ­ 71.673], 3.VII.1998, Woodruff, R., Baraowski, R., 1♂ MEI 115918 ( FSCA), blacklight trap; 26 km N Cabo Rojo [18.1, ­71.633], 730 m, 13–25.VII.1990, Masner, L., Rawlins, J., Young, C., 1♂ MEI 030408 ( CMNH), flight intercept trap .