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 Author Webb, Donald W. Author Metz, Mark A. text Zootaxa 2006 2006-08-14 1288 1288 1 241 journal article 1175­5334 FAA70D1F-49C8-40FC-9D96-CCF8C017E6BB Brachylinga attenuata Webb spec. nov. ( Figs. 4 , 27 , 50 , 73 , 96 , 119 , 142 , 165 ) Etymology Attenuatus (Latin) = drawn out, tapered. This name is used as an adjective and refers to the narrowed, extended gonocoxite, lateral view ( Fig. 73 ). Diagnosis Brachylinga attenuata is taxonomically associated with B. clausa in possessing setae on the katepisternum; in having the halter knob yellow; and in having the gonocoxite attenuate in ventral ( Fig. 27 ) and lateral views ( Fig. 73 ). It differs from B. clausa in having the posterior margin of the hypoproct rounded ( Fig. 4 ); the apex of the distiphallus ( Fig. 119 ) tapered to a point; the ventral apodeme ( Fig. 142 ) of the male aedeagus extending to anterior margin of dorsal apodeme; and the distiphallus in lateral view ( Fig. 165 ) recurved anteroventrally. Description of holotype male (MEI 046047) Body length 5.5 mm . Head. Length 0.78 mm . Ommatidia smaller ventrally and laterally. Frons pruinescence gray, brownish gray dorsally; setae dark brown on dorsal half. Antenna/head length 0.60; scape and pedicel dark reddish brown, pruinescence gray, first flagellomere dark yellow, second and third flagellomeres dark brown; scape length 0.12 mm , width 0.10 mm , length/width 1.2, scape/pedicel length 1.7, scape/flagellum width 0.77, setae yellow, short; pedicel length 0.07 mm , length/width 0.7; flagellum length 0.28 mm , width 0.13 mm , length/width 2.2, flagellum/scape width 2.3. Parafacial pruinescence white. Maxillary palpus dark yellow; length 0.30 mm , length/width 5.0; setae pale yellow, elongate. Genal setae white. Occipital setae white becoming lanceolate, appressed dorsally. Postocular macrosetae dark reddish brown. Thorax. Macrosetae dark reddish brown, 3 np, 2 sa, 1 pa, 2 dc, 2 sc. Mesonotum dark brown pruinescence brownish gray; setae dark brown, short intermixed with white, lanceolate, appressed setae. Pleuron and scutellum dark reddish brown, pruinescence white; setae white on propleuron, anepisternum, katepisternum, metanepisternum, laterotergite, and scutellum. Wing. Membrane pale gray, veins brown, pale yellow anteriorly; length 4.2 mm , length/width 3.2; pterostigma dark yellow; cell m 3 closed, petiolate. Halter pale yellow. Legs. Coxa setae white, present on posterior surface of midcoxa; macrosetae dark reddish brown. Fore­ and midfemora reddish brown, midfemur dark yellow apically, hindfemur dark yellowish brown, apex brown; ventral setae white on fore­ and midfemora; av 0:0:4, pv 0:0:2. Tibiae dark yellow, apex dark reddish brown. Tarsomeres 1–2 dark yellow, apex dark reddish brown; 3–5 pale brown. Abdomen. Pale reddish brown, pruinescence white; dorsal setae white, appressed; lateral setae white. Terminalia . Reddish brown. Tergite 8 ( Fig. 4 ), narrow medially ( 0.02 mm ); setae dark yellow, absent medially on posterior margin. Sternite 8 ( Fig. 27 ) quadrate, sides rounded, posterior margin emarginate. Epandrium ( Fig. 4 ), sides rounded; setae dark yellow. Cercus ( Fig. 4 ) ending basal to apex of hypoproct. Hypoproct ( Fig. 4 ), posterior margin rounded, ending distal to apex of cercus. Gonocoxite ventral view ( Fig. 27 ) broad anteriorly becoming attenuate apically; setae dark yellow, apical macrosetae black; dorsal view ( Fig. 50 ), posteromedial lobe and gonocoxal bridge absent; lateral view ( Fig. 73 ) attenuate, apex curved ventrally; ventral lobe ( Fig. 27 ) with ventral spines. Gonostylus ( Fig. 96 ), basodorsal lobe large, rounded; ventral margin curved ventrally, setae dark yellow, not directed apically in distinct tuft; fine, short spines absent laterally. Aedeagus with dorsal apodeme ( Fig. 119 ) oval, posterolateral margin rounded; ventral apodeme ( Fig. 142 ) tapered anteriorly, extending to anterior margin of dorsal apodeme; distiphallus ( Fig. 119 ) tapered apically with narrow dorsal carina, lateral view ( Fig. 165 ) recurved anteroventrally, lacking apicolateral spines; ejaculatory apodeme ( Fig. 119 ), anterior margin slightly emarginate. Female Unknown. Distribution The holotype of Brachylinga attenuata was collected in Ceara Mirim, Brazil . Habitats and phenology Brachylinga attenuata was handnetted in October. Specimen examined The holotype male of Brachylinga attenuata is labeled “ Ceara Mirim, R.G. do Norte, Brazil , Outubro, 1940, D. C. Alves ” and is deposited in the USNM .