Lysilinga nigra Webb 2006, spec. nov.
Creators: name: Webb, Donald W.
name: Metz, Mark A.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Therevidae
Lysilinga
Lysilinga nigra

description: <i>Lysilinga nigra</i> Webb spec. nov. (Figs. 366, 376, 386, 396, 406, 416, 426, 436, 444, 449) <i>Etymology</i> <i>Niger</i> (Latin) = black. This name is used as an adjective and refers to the black coloration of the specimens. <i>Diagnosis</i> <i>Lysilinga nigra</i> is taxonomically associated with <i>L. chamela</i> and <i>L. digita</i> in lacking setae on the katepisternum; in having the abdomen dark reddish brown; in having the halter knob dark brown; lacking dorsocentral macrosetae; and the hypoproct quadrate (Fig. 366). <i>Lysilinga nigra</i> differs from <i>L. chamela</i> and <i>L. digita</i> in having the male frons setose; the anterior half of the ejaculatory apodeme cylindrical (Fig. 436); and the female abdomen dark reddish brown, glossy, pruinescence white on the posterolateral area of tergites 1–7. <i>Description of holotype male (MEI 101362)</i> Body length 6.8 mm. <b>Head.</b> Length 0.84 mm. Ommatidia smaller ventrally and laterally. Frons pruinescence silver gray, black dorsally with pair of small black areas dorsal to antennal base; setae dark reddish brown intermixed with dark yellow setae. Antenna/head length 0.69; scape and pedicel dark reddish brown, pruinescence gray, flagellum dark brown with apical third of first flagellomere dark yellow; scape length 0.22 mm, width 0.12 mm, length/width 1.8, scape/pedicel length 3.7, scape/flagellum width 0.75, setae dark reddish brown; pedicel length 0.06 mm, length/width 0.5; first flagellomere almost spherical, apical fourth attenuate apically, flagellum length 0.30 mm, width 0.20 mm, length/width 1.9, flagellum/scape length 1.4. Parafacial dark reddish brown, pruinescence gray. Maxillary palpus dark yellow; length 0.36 mm, length/width 5.1; setae dark yellow. Genal setae white. Occipital setae white becoming pale yellow, lanceolate, appressed along margin of eyes dorsally. Postocular macrosetae dark reddish brown. <b>Thorax.</b> Macrosetae dark reddish brown, 3 np, 2 sa, 1 pa, 0 dc, sc 1. Mesonotum dull brown; setae white, elongate intermixed with pale violet, lanceolate, appressed, polychromatic setae. Pleuron dark reddish brown, pruinescence gray; setae white on propleuron, anepisternum, laterotergite, and metanepisternum, pale violet, lanceolate, appressed, polychromatic on scutellum, absent on katepisternum. <i>Wing.</i> Membrane pale brown becoming darker apically; veins brown; length 4.8 mm, length/width 2.8; pterostigma brown; cell m 3 open widely. Halter dark brown. <i>Legs.</i> Coxal macrosetae dark reddish brown. Femora dark yellowish brown; ventral setae white on fore­ and midfemur; av 1:0:3, pv 0:0:5. Tibiae dark yellow to pale brown. Tarsi dark yellowish brown. <b>Abdomen.</b> Dark reddish brown to black, pruinescence white posterolaterally on tergites 5–6; dorsal setae white, appressed; lateral setae white, elongate. <i>Terminalia</i> (MEI 103376), brown. Tergite 8 and epandrium (Fig. 366), setae dark reddish brown. Hypoproct (Fig. 366) quadrate, posterior margin truncate; ending below apex of cercus; setae dark reddish brown. Gonocoxite ventral view (Fig. 376), basal three­fourths quadrate, posteromedial angle rounded, tapering apically to attenuate projection, setae dark reddish brown; dorsal view (Fig. 486) gonocoxal bridge moderately large; lateral view (Fig. 496) oblong, tapering apically to broad point; ventral lobe (Fig 376) lacking ventral spines. Gonostylus (Fig. 406), basodorsal lobe absent; ventral margin straight, setae dark yellow; fine, short spines laterally. Aedeagus with dorsal apodeme (Fig. 416) square, posterolateral expansion large, pointed; ventral apodeme (Fig. 426) narrow, tapered anteriorly to anterior margin of dorsal apodeme; distiphallus dorsal view (Fig. 416) elongate, tapered apically to point with dorsal carina, lateral view (Fig. 436), apical half recurved apically, subapical hood large, curved ventrally to point; ejaculatory apodeme (Fig. 416) dark yellow, anterior half narrow, cylindrical, not extending beyond anterior margin of dorsal apodeme, anterior margin rounded, in cross­section spherical. Variation (n=7). Body length 6.6–7.0, 6.8 mm. <b>Head.</b> Frontal setae dark reddish brown intermixed with dark yellow setae (MEI 050596, 103376). <b>Thorax.</b> Macrosetae 3 np, 1–2 sa, 1 pa, 0 dc, 1–2 sc. <i>Wing.</i> Membrane dark yellow (MEI 103376). <i>Legs.</i> Femora dark yellow (MEI 050596, 103376); av 1:0:3–4, pv 0:0:4–7. <i>Female</i> Similar to male except for following. Variation (n=10). Body length 5.8–8.0, 7.2 mm. <b>Head.</b> Frons black, pruinescence gray, whitish gray ventrally with pair of small, dark brown areas dorsal to antennal base; setae dark reddish brown. Antenna dark brown to black, scape and pedicel pruinescence gray. Occipital setae white, elongate becoming reddish brown, lanceolate, slightly iridescent, appressed dorsally. <b>Thorax.</b> Macrosetae 3 np, 2 sa, 1 pa, 0 dc, 1–2 sc. Mesonotal setae dark brown, short intermixed with white and turquoise, lanceolate, iridescent, appressed setae (on some specimens these setae appear pale violet). <i>Legs.</i> Femora dark yellow, dorsoapical area grading into reddish brown to dark brown; av 1–2:0:2–5, pv 0:0:2–7. <b>Abdomen.</b> Dark reddish brown, glossy, pruinescence white on posterolateral area of tergites 1–7; dorsal setae dark reddish brown, appressed with white, elongate, appressed setae across posterior margin of tergites 1–3; lateral setae dark reddish brown. <i>Terminalia</i> (MEI 101492). Anterior margin of sternite 8 slightly convex. Furca (Fig. 444) oblong; length 0.35 mm, width 0.25 mm; posteromedial lobe large cone­shaped; anterolateral and anteromedial projections absent. Common spermathecal duct (Fig. 444) shorter than furca. Spermathecal duct directed anteriorly, sac­like posteriorly then becoming thread­like anteriorly. <i>Distribution Lysilinga nigra</i> is known from Mexico (Fig. 449). <i>Habitats and phenology</i> Adults of <i>Lysilinga nigra</i> have been handnetted and collected in Malaise traps from 12 February to 3 July. <i>Specimens examined</i> <i>Type specimen</i>. The holotype male of <i>Lysilinga nigra</i> Webb (MEI 101362) is labeled " MEXICO, Jalisco, Careyes, 12 Feb–19 Mar 1997, F. D. Parker" and is deposited in the USNM. <i>PARATYPES.</i> <b>MEXICO</b>. <b>JALISCO</b>. Careyes [Punta Careyes], 12–19.II.1997, F. C. Parker, 1&amp;male; 101357 (INHS), 23&amp;female; MEI 101090 (INHS), 101092 (USNM), 101096, 101112, 101117–8, 101120, 101122–3, 101132, 101211, 101224, 101241, 101271–2, 101283, 101299, 101315, 101316, 101321, 101344, 101352, 101362 (EMUS) Malaise trap; E stación de Biologia Chamela [19.61, ­105.05], 3.VI.1988, E. Ramírez, 2&amp;female; MEI 103369, 103382 (EBCC); 12.VI.1989, 1&amp;female; MEI 103374 (EBCC); 13.II.1989, 2&amp;female; MEI 103380–1 (E BCC); 20.IV.1988, 1&amp;female; MEI 103383 (EBCC); 11.VI.1988, 1&amp;female; MEI 103386 (EBCC), Malaise trap. <b>MORELOS</b>. 2.5 km W Ajuchitlan [18.467, ­98.983], 950 m, 15.XII.1995, Rodriguez, A., 1&amp;male; MEI 103379 (MEIC); 16.II.1996, 1&amp;female; MEI 103387 (MEIC); 16.III.1996, 1&amp;male; MEI 050596 (EBCC); 14.IV.1996, 1&amp;male; MEI 103375 (EBCC); 2.5 km N &amp; 4 km W Huautla, Estación CEAMISH [18.45, ­99.033], 940 m, 11.IV.1996, A. Rodriguez, 2&amp;male; MEI 103376–7 (EBCC); 15.III.1996, 1&amp;female; MEI 103384 (EBCC), Malaise trap. <b>OAXACA.</b> 8 km NW Totolapan [16.667, ­96.3], 1200 m, 3.VII.1975, E. M. Fisher, J. L. Fisher, 1&amp;male; MEI 147278 (UCR).
description: Published as part of <i>Webb, Donald W. &amp; 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, pp. 1-241 in Zootaxa 1288 (1288)</i> on pages 224-226