Elcaribe longicaudus 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 : 180-182

Elcaribe longicaudus Webb spec. nov.

(Figs. 227, 241, 255, 269, 283, 297, 311, 325, 356)

Etymology

Longus (Latin) = long; cauda (Latin) = tail. The name is used as a noun in apposition and refers to the large, cone­shaped hypoproct.

Diagnosis

Elcaribe longicaudus is taxonomically associated with E. paniculus in having an anterodorsal patch of short, dark brown to black setae on the gena; in having the male hypoproct (Fig. 227) enlarged and cone­shaped with the apicoventral surface flat; and in possessing dorsocentral macrosetae. Elcaribe longicaudus differs from E. paniculus in having the halter knob dark brown; the gonocoxite in ventral view ( Fig. 241) quadrate; the medial margin sinuate with the posterior third attenuate and in lateral view ( Fig. 269) the ventral margin is rounded and angulate before becoming attenuate apically.

Description of male holotype (MEI 040247)

Body length 6.2 mm.

Head. length 0.86 mm. Ommatidia becoming smaller ventrally and laterally. Frons pruinescence brown; setae black, elongate. Antenna/head length 0.67; dark reddish brown, scape with pruinescence gray, dense; scape length 0.20 mm, width 0.16 mm, length/width 1.3, scape/pedicel length 2.9, scape/flagellum width 0.88, setae dark reddish brown sparse; pedicel length 0.07 mm, length/width 0.6; first flagellomere oval, attenuate apically with basal ring of short dark brown setae, flagellum length 0.31 mm, width 0.14 mm wide, length/width 2.2, flagellum/scape length 1.6. Parafacial with pruinescence brownish gray. Maxillary palpus yellow; length 0.37 mm, length/width 6.2; setae white, elongate, dark reddish brown apically. Genal setae white with anterodorsal patch of short dark reddish brown setae. Occipital setae white, elongate, ventrally becoming pale gold lanceolate, appressed dorsally.

Thorax. Macrosetae 3 np, 2 sa, 1 pa, 2 dc, 2 sc. Mesonotum covered with dull blackish brown pruinescence; vittae indistinct; setae black, elongate intermixed with pale gold, lanceolate, subappressed, setae. Pleuron pruinescence gray, dense; setae white on propleuron, anepisternum, katepisternum, laterotergite, and metanepisternum, pale gold, lanceolate on scutellum. Wing. Membrane pale gray; veins brown; length 4.3 mm, length/ width 2.5; pterostigma pale brown; cell m 3 closed at wing margin. Halter stalk pale yellow, knob brown. Legs. Femora dark brown, pruinescence white; ventral setae white, elongate on basoventral half of fore­ and midcoxa, black on apical half; av 0:0:2, pv 0:0:0. 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, lanceolate, appressed; lateral setae white elongate. Terminalia . Pale reddish brown. Tergite and epandrium (Fig. 227), setae dark reddish brown. Sternite 8 ( Fig. 241), sides rounded, posterior margin emarginate; setae pale yellow. Hypoproct (Fig. 227) large, conical, posterior margin tapering to thick point; apicoventral surface flat. Gonocoxite ventral view ( Fig. 241) quadrate, medial margin sinuate with posterior third attenuate, anterior half with medial area of dark yellow and dark reddish brown, elongate setae, apical half with scattered reddish brown setae with small anteromedial patch of short, brown setae; dorsal view ( Fig. 255) gonocoxal bridge moderately large; lateral view ( Fig. 269) ventral margin rounded, angulate before becoming attenuate apically. Gonostylus (Fig. 283) lacking basodorsal lobe; ventral margin straight with small, apical lobe bearing dark yellow macrosetae, directed apically in distinct tuft; fine, short spines laterally. Aedeagus with dorsal apodeme ( Fig. 297) quadrate, sides parallel with small posterolateral projection; ventral apodeme (Fig. 311) broad, deeply emarginate anteriorly, extending laterally to point; distiphallus dorsal view ( Fig. 297) short, thick tapered apically, lateral view ( Fig. 325) short, subapical hood rounded apically, apex of distiphallus directed ventrally; ejaculatory apodeme ( Fig. 297), anterior half expanded laterally, extending beyond anterior margin of dorsal apodeme, anterior margin truncate, in cross­section flattened dorsoventrally with ventral carina.

Female Unknown.

Distribution Elcaribe longicaudus has been collected on the Island of Antigua ( Fig. 356).

Habitats and phenology Elcaribe longicaudus has been collected at light on 20 March.

Specimens examined

Type specimen. The holotype male of Elcaribe longicaudus Webb (MEI 040247) is labeled " ANTIGUA BWI, English Harbor , 34 [17.01, ­61.75], 20 IV 1958, J. F. G. Clarke, at light" and is deposited in the INHS .