Elcaribe scarbroughi 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 : 191-193

Elcaribe scarbroughi Webb spec. nov.

(Figs. 230, 244, 258, 272, 286, 300, 314, 328, 341, 353, 357)

Etymology

This species is named after Aubrey G. Scarbrough who collected numerous specimens of this species on the Island of San Salvador and the name is treated as a noun in apposition.

Diagnosis

Elcaribe scarbroughi is taxonomically associated with E. laticornis and E. obscurus in having an anterodorsal patch of dark, short setae on the gena; in lacking anteroventral and posteroventral macrosetae on the midfemur; and in having elongate, dark macrosetae along ventromedial margin of the gonocoxite in ventral view ( Fig. 244). Elcaribe scarbroughi differs from E. laticornis and E. obscurus in having the posteromedial projections of the gonocoxite in ventral view ( Fig. 244) almost touching medially. It differs from E. obscurus in having the anterior half of the ejaculatory apodeme ( Fig. 300) clavate and flattened dorsoventrally in cross­section with a short ventral carina

.

Description of holotype male (MEI 141723)

Body length 7.0 mm.

Head. Length 0.76 mm. Ommatidia smaller ventrally and laterally. Frons pruinescence brownish gray; setae dark brown. Antenna/head length 0.74; scape dark brown, pruinescence gray, dense, pedicel and flagellum dark brown, base of first flagellomere yellow; scape length 0.18 mm, width 0.10 mm, length/width 1.8, scape/ pedicel length 2.0, scape/flagellum width 0.63, setae dark brown, elongate, pale yellow setae ventrally; pedicel length 0.09 mm, length/width 0.6; first flagellomere oval, attenuate apically, flagellum length 0.29 mm, width 0.16 mm, length/width 1.8, flagellum/scape length 1.6. Parafacial pruinescence gray. Maxillary palpus dark yellow, base dark reddish brown; length 0.36 mm, length/width 6.0; setae white. Genal setae white. Occipital setae white becoming appressed, lanceolate dorsally.

Thorax. Macrosetae 3 np, 2 sa, 1 pa, 2 dc, 2 sc. Mesonotum pruinescence gray, dense; setae black, elongate intermixed with 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 yellow. Legs. Femora dark reddish brown, pruinescence white; ventral setae black intermixed with white setae ventrally on forefemur, white on midfemur; av 3:0:4, 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, posterior margin on tergites 2–8 dark yellow, pruinescence white, dense; dorsal setae white, appressed, lanceolate; lateral setae white, elongate. Terminalia (MEI 141705) dark yellow. Tergite 8 and epandrium (Fig. 230), setae white to pale yellow intermixed with scattered dark brown setae. Sternite 8 ( Fig. 244), sides rounded, posterior margin emarginate. Hypoproct (Fig. 230) large, broadly rounded posterolaterally, posterior margin slightly emarginate; apicoventral surface flat. Gonocoxite ventral view ( Fig. 244), basal third bulbous, 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, macrosetae dark reddish brown mediolaterally (moderately thick); dorsal view ( Fig. 258) gonocoxal bridge large; lateral view ( Fig. 272) broad, rectangular basally with basomedial lobe prominent, tapering apically to attenuate projection; ventral lobe ( Fig. 244) with ventral spines. Gonostylus (Fig. 286), basodorsal lobe absent; ventral margin broadly rounded, setae dark yellow, not extended apically in distinct tuft; short, fine spines abundant laterally. Aedeagus with dorsal apodeme ( Fig. 300) quadrate, posterolateral margin expanded, rounded; ventral apodeme (Fig. 314) broad, anterior margin emarginate, tapering laterally to point; distiphallus dorsal view ( Fig. 300) short, tapered to rounded point, lateral view ( Fig. 328) curved ventrally at 90° angle, subapical hood absent; ejaculatory apodeme ( Fig. 300) dark yellow, anterior half expanded laterally, extending beyond anterior margin of dorsal apodeme, anterior margin emarginate, in cross­section flattened dorsoventral with ventral carina.

Variation (n=10). Body length 5.8–7.1, 6.6 mm. Thorax. Macrosetae 3 np, 2 sa, 1 pa, 2 dc, 2 sc. Legs. Anteroventral macrosetae 1–3:0:3–5, pv 0:0:0–1.

Female

Similar to male except as follows.

Variation (n=10).

Body length 6.5–8.4, 7.1 mm.

Head. Frons pruinescence light brownish gray; setae dark brown. Antenna dark brown.

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

Abdomen. Dark reddish brown, posterior margin of tergites 2–5 dark yellow becoming broader posteriorly; dorsal setae dark reddish brown with white, elongate, appressed setae across posterior margin of tergite 1; lateral setae white, elongate on tergite 1, dark reddish brown on tergites 2–8. Terminalia (MEI 141729). Anterior margin of sternite 8 with rounded lobate medial projection ( Fig. 341). Furca (Fig. 353) oval; length 0.66 mm, width 0.23 mm; posteromedial and anteromedial projections absent, anterolateral projection short. Common duct (Fig. 353) shorter than furca. Spermathecal duct (Fig. 353) narrow sac­like then becoming thread­like.

Distribution Elcaribe scarbroughi has been collected in The Bahamas ( Fig. 357).

Habitats and phenology

Adults of Elcaribe scarbroughi have been handnetted and collected in Malaise traps, yellow pan traps in Caribbean pine and palmetto scrub, and blacklight traps.

Specimens examined

Type specimen. The holotype male of Elcaribe scarbroughi Webb (MEI 141723) is labeled " THE BAHAMAS, San Salvador Island, Rd. S. CCFL, 31–VI 1980, A. G. Scarbrough" and is deposited in the INHS. PARATYPES. THE BAHAMAS. ABACO CAYS / Allans Cay. [26.467, ­77.083], 9.V.1953, Hayden , E. B., 1♂ MEI 048007 ( AMNH) . ABACO CAYS/ELBOW CAY. Hope Town [26.55, ­76.96], 4.V.1953, Hayden, E. B., Giovannoli, L., 1♂ MEI 040490 ( AMNH) , at light. CAT ISLAND. [24.4, ­75.52], 31.XII.1978, Cross , W. H., 1♂ MEI 088112 ( MEM) , blacklight; The Bight [24.32, ­75.41] , 22.III.1953, Hayden , E. B., 1♂ MEI 048023 ( AMNH) . GORDA CAY. Sandy Point. [26.083, ­77.533], 14–20.VI.1998, Glasscock, S., 2♂ UCF 0009563, 0009565 ( UCFC) , Malaise trap, Crew Beach mangrove/dune mix; 20–26.VI.1998, 1♂ UCF 0009552 ( UCFC) ; 26.VI–7.VII.1998, Peak, T., 2♀ UCF 0010214, 0010217 ( UCFC) ; 7–16.VII.1998, 1♀ UCF 0009549 ( UCFC) . GRAND BAHAMA ISLAND. Freeport [26.533, ­ 78.7], 20–27.VI.1987, Steiner, W. E., Molineaux, M. J., Molineaux, R., 1♂ MEI 048171 ( USNM) , yellow pan in caribbean pine and palmetto scrub. NEW PROVIDENCE ISLAND. Nassau [25.07, ­77.34], 16.IV.1953, Hayden , E. B., 4♂ MEI 040805–8 ( AMNH) . NORTH BIMINI ISLAND. [25.7, ­79.27], 3.VI.1950, Cazier, Rindge, 1♂ MEI 040484 ( AMNH) . ROSE ISLAND. [25.099, ­77.161], 5.XII.1961, Boelt , R. A., 1♂ MEI 115610 ( USNM) . SAN SALVADOR ISLAND. [24.03, ­74.49], 15.V.1982, Bower, B., 1♂ MEI 039706 ( CNC) ; CCFL [24.04, ­74.49], 12.V.1981. Rutkauskas , R., 6♂ MEI 141698, 141702, 141704–5, 141711–2, 1♀ 141736, ( INHS) ; Scarbrough , A., 2♂ 141706, 141730 ( INHS) , 1♀ 141739 ( USNM) ; 13.V.1981, Rutkauskas , R., 2♂ MEI 141701, 141709 ( INHS) , 1♀ 141731 (ME IC); 14.V.1981, 1♂ MEI 141626 ( INHS) ; 18.V.1981, 2♀ 141732, 141738 ( INHS) ; Rd. S. CCFL [24.04, ­74.49], 28.V.1980, Scarbrough , A., 2♀ MEI 141725, 141727 ( INHS) ; 29.V.1980, 3♂ MEI 141719 ( CASC) , 141720 (BMNH), 141721 (INHS), 1♀ 141729 ( INHS) ; 31.V.1980, 1♂ MEI 141722, 1♀ 141726 ( FSCA) ; 3.VI.1980, 2♀ MEI 141724, 141728 ( INHS) ; 8.V.1981, 1♀ MEI 040931 ( CSCA) ; 9.V.1981, 1♂ MEI 040926 ( INHS) ; 10.V.1981, Rutkauskas , R., 2♂ MEI 141700, 141710, 2♀ 141733, 141735 ( INHS) ; 13.V.1981, 1♂ MEI 141697 ( CNC) , 2♀ 141734 ( CNC) , 141737 (INHS); 14.V.1981, Scarbrough , A., 3♂ MEI 040927–8, 141699 ( INHS) ; 15.V.1981, Rutkauskas, R., 1♀ MEI 141740 ( BMNH) . SOUTH BIMINI ISLAND. [25.733, ­79.25], 3.VI.1950, Cazier, Rindge, 1♂ MEI 040481 ( AMNH) ; –. V.1951, Cazier , Gertsch, 2♂ MEI 040482, 040867 ( AMNH) ; 20–31.VII.1951, Vaurie, C., Vaurie, P., 1♂ MEI 040483 ( AMNH) . STANIARD [STANIEL] CAY. Exuma [24.183, ­76.417], 13.I.1953, Hayden , E. B., 2♂ MEI 048026–7 ( AMNH) . STRANGERS CAY. High Rock [27.15, ­78.083], 14.VII.1904, 1♂ MEI 077644 ( MCZ) .