Elcaribe bahamaensis Webb

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: 164-166

publication ID

1175­5334

publication LSID

lsid:zoobank.org:pub:FAA70D1F-49C8-40FC-9D96-CCF8C017E6BB

persistent identifier

http://treatment.plazi.org/id/7E0087EE-5DF5-FF3D-374E-FC31309AA8F6

treatment provided by

Felipe

scientific name

Elcaribe bahamaensis Webb
status

spec. nov.

Elcaribe bahamaensis Webb   spec. nov.

(Figs. 221, 235, 249, 263, 277, 291, 305, 319, 333, 345, 356)

Etymology

Ensis (Latin)   = a suffix denoting place, locality, country. This species is named for the Bahama Islands from where specimens of this species have been collected and is used as a noun in apposition.

Diagnosis

Elcaribe bahamaensis   is taxonomically associated with E. glabrus   in lacking an anterodorsal patch of dark, short setae on the gena; in lacking anteroventral and posteroventral macrosetae on the midfemur; in lacking elongate, dark macrosetae along ventromedial margin of the gonocoxite ( Fig. 235); and in having the gonocoxite in ventral and lateral views ( Figs. 235, 263) broad, only the apical fourth narrow and attenuate; and the posterior margin of the hypoproct (Fig. 221) emarginate. Elcaribe bahamaensis   differs from E. glabrus   in having the hypoproct quadrate (Fig. 221) and the gonocoxite in ventral ( Fig. 235) and lateral ( Fig. 263) views broad basally, tapered evenly to the apex with dark reddish brown macrosetae along the lateral margins; the ventral margin of the gonostylus (Fig. 277) straight with an expanded apical area bearing pale yellow macrosetae; and the dorsal apodeme ( Fig. 291) quadrate, slightly expanded anteriorly and flattened dorsoventrally in cross­section.

Description of holotype male (MEI 048178) Body length 4.7 mm.

Head. Length 0.62 mm. Ommatidia smaller ventrally and laterally. Frons gray, brownish gray dorsally; setae black. Antenna/head length 0.74; black, pruinescence on scape gray; scape length 0.16 mm, width 0.09 mm, length/width 1.8, scape/pedicel length 2.0, scape/flagellum width 0.56, setae dark reddish brown, dark yellow setae ventrally, sparse; pedicel length 0.08 mm, length/width 0.8; first flagellomere oval, attenuate apically, flagellum length 0.22 mm, width 0.16 mm, length/width 1.4, flagellum/scape length 1.4. Parafacial pruinescence gray. Maxillary palpus dark yellow; length 0.28 mm, length/width 5.6; setae white. Genal setae white. Occipital setae white becoming lanceolate, appressed dorsally.

Thorax. Macrosetae 3 np, 2 sa, 1 pa, 2 dc, 2 sc. Mesonotum pruinescence dull blackish brown; setae black, elongate intermixed with white, lanceolate, subappressed setae. Pleuron pruinescence gray; setae white on anepisternum, katepisternum, laterotergite, metanepisternum, lanceolate on scutellum. Wing. Membrane pale brown; veins brown; length 3.7 mm, length/width 2.8; pterostigma brown, narrow; cell m 3 open on left wing, closed at wing margin on right wing (closed, petiolate on other male specimens). Halter pale yellow. Legs. Femora dark brown, pruinescence white; ventral setae white on fore­ and midfemora, dark brown setae anteroventrally on forefemur; av 1:0:4, 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   (MEI 073537) dark yellow. Tergite 8 and epandrium (Fig. 221), setae pale yellow. Hypoproct (Fig. 221) quadrate, posterior margin emarginate; apicoventral surface flat. Sternite 8 ( Fig. 235), sides rounded, posterior margin moderately emarginate. Gonocoxite ventral view ( Fig. 235), medial margin with broad posteromedial lobe then tapering to narrow point; setae pale yellow, several dark reddish brown to black macrosetae medially and apically and an anterior patch of short dark yellow setae; dorsal view ( Fig. 249) gonocoxal bridge large; lateral view ( Fig. 263) basal half broad, rounded, tapering to apex; ventral lobe ( Fig. 235) lacking ventral spines. Gonostylus (Fig. 277), basodorsal lobe small, broadly rounded; ventral margin straight with expanded apical area bearing pale yellow macrosetae, not extending apically in distinct tuft; numerous fine short spines apically. Aedeagus with dorsal apodeme ( Fig. 291) quadrate, sides parallel, posterolateral margin rounded; ventral apodeme (Fig. 305) broad, moderately long, clavate anteriorly; distiphallus dorsal view ( Fig. 291) short, broad basally, tapered apically, lateral view ( Fig. 319) short, broad basally, subapical hood absent, apex curved ventrally at 90° angle; ejaculatory apodeme ( Fig. 291) dark yellow, anterior half slightly expanded laterally, not extending beyond anterior margin of dorsal apodeme, anterior margin truncate, in cross­section flattened dorsoventrally.

Variation (n=3).

Body length 4.7–5.7, 5.0 mm.

Head. Maxillary palpus dark reddish brown (MEI 073537).

Thorax. Macrosetae 3 np, 2 sa, 1 pa, 2 dc, 2 sc. Legs. Anteroventral macrosetae

1–4:0:4–5, pv 0:0:0.

Female

Similar to male except for following.

Variation (n=10).

Body length 5.2–8.3, 6.3 mm.

Head. Frons pruinescence pale brownish gray, silver ventrally; setae dark reddish brown. Antenna dark brown, base of first flagellomere dark yellow, pruinescence on scape gray. Parafacial pruinescence gray; narrow, black dorsoventral stripe and black dorsal band absent.

Thorax. Macrosetae 3 np, 2 sa, 1 pa, 2 dc, 2 sc. Legs. Anteroventral macrosetae 1–4:0:2–5, pv 0:0:0.

Abdomen. Dark reddish brown, posterior margin of tergites 2–5 dark yellow, tergites 6–7 dark yellow posterolaterally; dorsal setae dark reddish brown, appressed with whitish yellow setae laterally and across posterior margin of tergite 1. Terminalia   (MEI 040930). Anterior margin of sternite 8 ( Fig. 333) with large, pointed projection. Furca (Fig. 345) oblong, length 0.42 mm, width 0.22 mm; posteromedial projection absent, anterolateral and anteromedial projections short, pointed. Common duct (Fig. 345) shorter than furca. Spermathecal duct (Fig. 345) expanded, sac­like posteriorly, apex darkened, then becoming thread­like.

Distribution

Elcaribe bahamaensis   has been collected on various islands and cays in The Bahamas ( Fig. 356).

Habitats and phenology

Elcaribe bahamaensis   has been handnetted, collected in yellow pan traps in Caribbean pine and palmetto scrub, in a power net trap, and in a boll weevil trap. Specimens have been collected from 31 January to 7 October.

Specimens examined

Type specimen. The holotype male of Elcaribe bahamaensis Webb   (MEI 048178) is labeled "BAHMAMA IS.: Mayaguana I., Abraham Bay [22.38, ­72.96], IV–24–1983, Arnold S. Menke " and is deposited in the USNM. PARATYPES. THE BAHAMAS. ABACO CAYS. Allans Cay [26.467, ­77.083], 9.V.1953, E. B. Hayden, 1♀ MEI 040491 ( AMNH) GoogleMaps   ; Man of War Cay [26.6, ­77.01], 30.VIII.1971, H. Howden, A. Howden, 1♀ ME I 039705 ( CNC)   . BERRY ISLANDS. Fraziers Hog Cay [25.6, ­77.73], 30.IV.1953, E. B. Hayden, 1♀ MEI 040499 ( AMNH)   . CAT ISLAND. The Bight [24.32, ­75.41], 22.III.1953, E. B. Hayden, L. Giovannoli, R. L. Rabb, 1♀ MEI 040492 ( AMNH)   . ELEUTHERA ISLAND. Rainbow Cay [25.333, ­76.45], 21–28.IV.1984, J. R. Wiley, 2♀ MEI 128293–4 ( FSCA)   . GRAND BAHAMA ISLAND. Freeport, [26.539, ­78.638], 26.VIII.1965, J. B. Williams, 2♀ MEI 040237, 040239 ( CUIC) GoogleMaps   ; [26.533, ­78.7], 20–27.VI.1987, W. E. Steiner, M. J. Molineaux, R. Molineaux, 3♀ MEI 048172, 048183, 048197 ( USNM)   , yellow pan in caribbean pine and palmetto scrub; Zanadu Beach , 23.VI.1987, W. E. Steiner, M. J. Molineaux, R. Molineaux, 1♀ MEI 048184 ( USNM)   , power net. GREAT INAGUA ISLAND. Matthew Town [20.96, ­73.67], 31.I.1953, E. B. Hayden, L. Giovannoli, 2♀ MEI 040804, 048038 ( AMNH)   . TURKS & CAICO ISLANDS. Grand Turk Island [21.46, ­71.14], 19.II.1953, E. B. Hayden, L. Giovannoli, 1♂ MEI 048030, 1♀ 040800 ( INHS)   . NEW PROVIDENCE ISLAND. Nassau [25.065, ­77.339], 1.V.1963, C. E. Glasucock, 1♀ ME I 040873 ( USNM) GoogleMaps   . SALVADOR ISLAND. Jake Jones Road [24.04, ­74.49], 27.VI.1985, G. C. Eickwort, 1♂ MEI 073537 ( CUIC)   ; 12.V.1981, R. Rutkauskas, 1♀ MEI 040930 (ME IC), trap in scrub growth. SOUTH ANDROS ISLAND. High Rock [to Bain] [26.621, ­ 78.283], 26.V.1983, W. H. Cross, 1♀ MEI 030499 ( MEM) GoogleMaps   , boll weevil trap. SOUTH BIMINI ISLAND. Lerner Marine Lab [25.733, ­79.25], 7.X.1947, J. A. Oliver, 1♀ MEI 040498 ( AMNH)   .

AMNH

American Museum of Natural History

CNC

Canadian National Collection of Insects, Arachnids, and Nematodes

FSCA

Florida State Collection of Arthropods, The Museum of Entomology

CUIC

Cornell University Insect Collection

USNM

Smithsonian Institution, National Museum of Natural History

INHS

Illinois Natural History Survey

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Therevidae

Genus

Elcaribe