Elcaribe elongatus 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 : 170-172

Elcaribe elongatus Webb spec. nov.

(Figs. 223, 237, 251, 265, 279, 293, 307, 321, 335, 347, 358)

Etymology

Elongatus (Latin) = prolonged. This name is used as an adjective and refers to the elongated gonocoxites.

Diagnosis

Elcaribe elongatus is taxonomically associated with E. bahamaensis and E. glabrus in lacking an anterodorsal patch of dark, short setae on the gena; in lacking anteroventral and posteroventral macrosetae on the midfemur; and in lacking elongate, dark macrosetae along ventromedial margin of the gonocoxite ( Fig. 237). Elcaribe elongatus differs from E. bahamaensis and E. glabrus in having the gonocoxite in ventral and lateral views ( Figs. 237, 265) attenuate and the ejaculatory apodeme ( Fig. 293) with the anterior half expanded laterally, extending beyond anterior margin of dorsal apodeme, the anterior margin pointed, and in cross­section flattened dorsoventrally with a short, ventral carina.

Description of holotype male (MEI 030441)

Body length 6.2 mm.

Head. Length 0.70 mm. Ommatidia smaller ventrally and laterally. Frons pruinescence gray, brownish gray dorsally; setae dark brown. Antenna/head length 0.77; scape black, pruinescence gray, pedicel and flagellum dark brown; scape length 0.18 mm, width 0.10 mm, length/width 1.8, scape/pedicel length 3.0, scape/flagellum width 0.71, setae dark brown, elongate, a few pale yellow setae ventrally; pedicel length 0.06 mm, length/width 0.5; first flagellomere oval, attenuate apically, flagellum length 0.30 mm, width 0.14 mm, length/width 2.1, flagellum/scape length 1.7. Parafacial pruinescence dark brown. Maxillary palpus dark yellow; length 0.42 mm, length/width 7.0; setae white, elongate. Genal setae white. Occipital setae white becoming 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 whitish yellow lanceolate subappressed setae. Pleuron pruinescence gray; setae white on anepisternum, katepisternum, metanepisternum, and laterotergite, pale gold lanceolate on scutellum. Wing. Membrane pale gray; veins pale yellowish brown; length 4.3 mm, length/width 2.9; pterostigma indistinct; cell m 3 closed, petiolate. Halter dark yellow. Legs. Femora dark brown, pruinescence white; ventral setae white on forefemur, dark brown anteroventrally; av 3:0:8, 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; dorsal setae white, appressed; lateral setae white elongate. Terminalia (MEI 039668). Tergite 8 and epandrium (Fig. 223), setae dark brown. Hypoproct (Fig. 223) quadrate, posterior margin slightly emarginate; apicoventral surface flat. Sternite 8 ( Fig. 237), posterior margin rounded. Gonocoxite ventral view ( Fig. 237), basal third bulbous, rounded laterally, basomedial lobe broadly rounded, posterior two­thirds tapered to attenuate projection, setae dark yellow, dark reddish brown apically with an anterior patch of short, black setae; dorsal view ( Fig. 251) gonocoxal bridge large; lateral view ( Fig. 265) bulbous basally with basomedial lobe prominent, tapering apically to attenuate projection; ventral lobe ( Fig. 237) with ventral spines. Gonostylus (Fig. 279), basodorsal lobe broad, rounded; ventral margin straight, setae pale yellow, not extended apically in distinct tuft; short, fine spines abundant laterally. Aedeagus with dorsal apodeme ( Fig. 293) quadrate, sides slightly emarginate, posterolateral margin rounded; ventral apodeme (Fig. 307) broad, anterior margin truncate; distiphallus dorsal view ( Fig. 293) short, broad basally, tapered to rounded point; lateral view ( Fig. 321) curved ventrally at 90° angle, subapical hood absent; ejaculatory apodeme ( Fig. 293) dark yellow, anterior half expanded laterally, extending beyond anterior margin of dorsal apodeme, anterior margin pointed, in crosssection flattened dorsoventrally with short ventral carina.

Variation (n=10). Body length 4.2–6.2, 5.2 mm. Thorax. Macrosetae 3 np, 2 sa, 1 pa, 2 dc, 2 sc. Legs. Anteroventral macrosetae 1–4:0:3–8, pv 0:0:1.

Female

Similar to male except as follows.

Variation (n=8).

Body length 5.0–6.3, 5.9 mm.

Head. Frons pruinescence brownish gray; setae dark brown. Parafacial pruinescence yellowish brown.

Thorax. Macrosetae 3 np, 2 sa, 1 pa, 2 dc, 2 sc. Legs. Anteroventral macrosetae 1–3:0:4–6, pv 0:0:1.

Abdomen. Dark reddish brown, pruinescence light gray; tergites 2–7 with posterolateral margin dark yellow; dorsal setae dark reddish brown, appressed, tergite 1 with white, elongate setae laterally and along posterior margin. Terminalia (MEI 039669). Anterior margin of sternite 8 with anteromedial area slightly rounded ( Fig. 335). Furca (Fig. 347) oval; length 0.38 mm, width 0.20 mm; posteromedial and anterolateral projections absent, anteromedial projection short. Common duct (Fig. 347) shorter than furca. Spermathecal duct (Fig. 347) narrow, sac­like posteriorly, apex darkened then becoming thread­like.

Distribution

Elcaribe elongatus has been collected in The Bahamas and the Dominican Republic ( Fig. 358).

Habitats and phenology

Adults of Elcaribe elongatus have been handnetted, collected in flight intercept traps in a deciduous forest and in blacklight traps. Specimens have been collected from 3 March to 30 November.

Specimens examined

Type specimen. The holotype male of Elcaribe elongatus Webb (MEI 030441) is labeled " DOMINICAN REPUBLIC: Pedernales. 9.5 km N Cabo Rojo, 18–02N, 71–39W, 35 m, 19 July 1990, J. Rawlins, C. W. Young, S. A. Thompson " and is deposited in the CMNH. PARATYPES. THE BAHAMAS. PLANA CAYS [French Cays]. East Plana Cay [East French Cay] [22.61, ­73.51], 4.III.1953, E. B. Hayden, 2♂ MEI 039669 ( INHS), 040480 ( AMNH), 3♀ 040494 ( INHS), 040495–6 ( AMNH). TURKS & CAICO ISLAND. Grand Turk Island [21.46 ­71.14], 19.II.1953, Hayden, E. B., Giovannoli, L., 2♀ MEI 040803, 048030 ( AMNH); Long Cay , S Grand Turk Island [22.6, ­74.34], 25.II.1953, E. B. Hayden, 1♀ MEI 048031 ( AMNH). Andros Island . Mangrove Cay [24.25, ­77.65], 26.IV.1953, E. B. Hayden, L. Giovannoli, 1♂ MEI 039668 ( AMNH). DOMINICAN RE PUBLIC. MONTE CRISTI. 5 km NNE Botoncillo [19.767, ­71.4], 50 m, 29–30.XI.1992, R. Davidson, M. Klingler, S. Thompson, J. Rawlins, 4♂ MEI 030447 ( MEIC), 030448 ( USNM), 030449–50 ( CMNH), arid thornscrub. PEDERNALES. 23.5 km N Cabo Rojo [18.1, ­71.633], 540 m, 13–19.VII.1990, L. Masner, J. Rawlins, C. Young, 1♂ MEI 030453 ( CMNH), flight intercept trap, deciduous forest; Cabo Rojo , Alcoa [17.904, ­71.673], 20–24.VI.1999, R. E. Woodruff, R. M. Baranowski, 1♂ MEI 115911 ( FSCA), blacklight trap; Alcoa Headquarters [17.904, ­71.673], 10.VI.1998, R. E. Woodruff, P. H. Freytag, 1♂ MEI 115920 ( FSCA), blacklight trap; 1.VII.1998, R. E. Woodruff, R. M. Baranowski, 2♂ MEI 115947–8 ( FSCA), blacklight trap; 14.5 km N Cabo Rojo [18.05 ­71.65], 165 m, 26–27.IX.1991, Young, C., Thompson, S., Davidson, R., Rawlins, J., 3♂ MEI 141713, 141717–8, 4♀ 141742 ( MEIC), 141743 ( USNM), 147342–3 ( CMNH), arid thornscrub .