Protothereva ecuadorensis Webb

Webb, Donald W. & Metz, Mark A., 2003, The South American genus Protothereva Malloch (Diptera: Therevidae: Therevinae) with description of two new species, Zootaxa 234, pp. 1-12 : 5-8

Protothereva ecuadorensis Webb spec. nov.

Etymology. ­ensis (Latin)= a suffix denoting place, locality or country. This species is named after the country of Ecuador from where all of the specimens have been collected. This name is treated as a noun in apposition.

Diagnosis: Protothereva ecuadorensis is separated from P. g r i s e a in lacking the brown maculations on the wing veins, in having the parafacial pruinescence dark brown with the ventral half gray and in having the cuticle of maxillary palpus dark brown. It is separated from P. peruensis in having the parafacial pruinescence dark brown dorsally and gray ventrally; female halter knob dark brown; male hypoproct ( Fig. 1 ) with posterior margin slightly emarginate; male hypandrium present ( Fig. 2 ); and female furca ( Fig. 9 ) lacking anterolateral projection.

apodeme, VL=ventral lobe, VP=projection basolateral to ventral lobe.

Description of holotype male (MEI 039726)

Body length 6.2 mm.

Head. Length 0.78 mm. Frons with pruinescence dull brownish gray, with a diffuse dark brown area dorsolaterally along margin of eye; setae black, elongate, scattered over dorsal three­fourths. Antenna dark reddish brown, scape with gray pruinescence, 0.87 times length of head; scape length 0.26 mm, width 0.12 mm, 2.2 times longer than wide, 3.3 times length of pedicel, width 0.75 times width of flagellum, setae dark reddish brown, elongate; pedicel length 0.08 mm, width 0.12 mm; first flagellomere oval, posterior fourth narrow, attenuated apically, length 0.28 mm, 0.16 mm wide, second flagellomere length 0.02 mm, width 0.03 mm, third flagellomere length 0.04 mm, width 0.03 mm, flagellum length 0.34 mm, 2.1 times longer than wide, 1.3 times length of scape. Parafacial pruinescence dark brown dorsally, gray ventrally. Maxillary palpus dark brown, pruinescence gray, length 0.40 mm, width 0.06 mm, 6.7 times longer than wide; setae white, elongate. Occiput black, pruinescence gray; setae white, elongate, becoming pale yellow, lanceolate along margin of eye.

Thorax. Mesonotum with pruinescence dull brownish gray; setae black elongate, intermixed with pale gold setae. Pleuron dark brown, pruinescence gray; scutellum dark reddish brown; setae white, elongate on propleuron, anepisternum, laterotergite, and metanepisternum, pale gold on scutellum; absent from katepisternum. Wing. Membrane opaque, veins pale, yellow brown; length 4.8 mm width 1.8 mm; 2.7 times longer than wide; pterostigma faint yellowish brown; cell m3 open widely. Halter pale brown. Legs. Femoral setae pale whitish yellow ventrally, elongate; av macrosetae 0:0:4, pv macrosetae 0:0:0 (0:0:1 on right hind femur). Left midleg missing on holotype.

Abdomen. Cuticle dark reddish brown, pruinescence white, dense; dorsal setae white, elongate, appressed; lateral setae white, elongate, erect. Terminalia (paratype MEI 039725) dark yellow. Sternite 8 ( Fig. 2 ) rectangular, sides rounded. Hypoproct ( Fig. 1 ) quadrate, posterior margin slightly emarginate. Hypandrium (Figs, 2, 3) brown, evident as a thin lightly sclerotized band in intersegmental membrane. Gonocoxite in ventral view ( Fig. 2 ) broad basally, posterior half concave, tapering posteriorly to point; setae dark yellow with several moderately thick dark reddish brown setae. Gonostylus ( Fig. 5 ) with basodorsal lobe short, setae dark yellow; apical half curved dorsally to single point, with subapical tubercle bearing several short setae. Aedeagus with dorsal apodeme ( Fig. 6 ) broad, triangular, tapering gradually into basiphallus; ventral apodeme ( Fig. 7 ) narrow, apex truncate, extending to anterior margin of dorsal apodeme; distiphallus in dorsal view ( Fig. 6 ) short, tapered posteriorly, in lateral view ( Fig. 8 ) with apical half bent ventrally at 90° angle, sinuate; ejaculatory apodeme in dorsal view ( Fig. 6 ) with posterior half broad, oval, anterior half slightly bulbous, extending beyond anterior margin of dorsal apodeme.

Variation: Body length 4.7­6.5, 5.2 mm (N=7).

Female

Similar to male except for following. Body length 6.4­6.5 mm (N=2).

Head. Frons dark reddish brown, pruinescence brownish gray, ventral fourth with silver pruinescence extended laterally to antennal socket and with poorly defined dark brown area dorsolaterally.

Thorax. na 3­4 (N=2) macrosetae. Wing. Membrane opaque, faint smoky brown, veins brown; pterostigma pale brown. Halter dark brown. Legs. Hind femur occasionally with 1 short pv macroseta.

Abdomen. Cuticle dark reddish brown, pruinescence whitish gray, denser along posterior margins of tergites 2­3; dorsal and lateral setae dark reddish brown, short. Terminalia (paratype MEI 090032) cuticle dark reddish brown. Anterior margin of sternite 8 convex, emarginate medially; penal guide short. Furca ( Fig. 9 ) length 0.44 mm, width 0.20 mm, 2.2 times longer than wide; posterior margin rounded, sides parallel, anterior margin truncate; anterolateral projection absent.

Distribution ( Fig. 19 ). Known only from Ecuador.

Specimens Examined (N=9). The holotype male was collected from San Isidro, Carchi, Ecuador, elevation 2500 m, 23.VI.1965, by L. Pena (MEI 039726) and deposited in the Canadian National Collection of Insects (CNC). PARATYPES: ECUADOR: Provincia Carchi: San Isidro, 2500 m, 23­VI­1965, L. Pena, 1 male MEI 0 39725 (INHS); Bolivar, Chota R., 2000 m, 10­VI­1965, L. Pena, 1 male MEI 0 39727 (CNC). Provincia Pichincha: 2 km W Cayambe, 2300 m, 7­VI­1965, L. Pena, 1 male MEI 0 39728 (MEI). Provincia Tungarahua: Baños, 13­XI­1937, S. W. Frost, 1 male MEI 146037 (PSUC); 10­IV­1939, 1900 m, W. C. Macintyre, 1 female MEI 0 90046 (AMNH); 2­V­1939, 1800 m, 1 male MEI 0 90038 (AMNH), 1 female MEI 0 90032 (INHS); 1820 m 11­II­1955, E. I. Schlinger, E. S. Ross, 1 male MEI 0 90041 (CAS).

Figures

FIGURES 1 ­ 9. Protothereva ecuadorensis spec. nov. 1. Tergite 8, epandrium, cerci, and hypoproct, dorsal view. 2. Sternite 8, hypandrium, and gonocoxite ventral view. 3. Gonocoxite and hypandrium dorsal view. 4. Gonocoxite left lateral view. 5. Gonostylus left lateral view. 6. Aedeagus dorsal view (inset ejaculatory apodeme cross­section). 7. Aedeagus ventral view (inset ventral apodeme crosssection). 8. Aedeagus lateral view. 9. Female internal reproductive organs. Scale = 0.1 mm. Abbreviations: Acc = accessory gland duct, C = cercus, CD = common duct, DA = dorsal apodeme, Dp = distiphallus, EA = ejaculatory apodeme, Epa = epandrium, F = furca, GA = gonocoxal apodeme, Gs = gonostylus, Gx = gonocoxite, H = hypandrium, Hpt = hypoproct, Sp = spermatheca, SpD = spermathecal duct, SpS = spermathecal sac, SS = sensory seta, S 8 = sternite 8, T 8 = tergite 8, VA = ventral

FIGURES 10 ­ 19. Protothereva peruensis spec. nov. 10. Tergite 8, epandrium, cerci, and hypoproct, dorsal view. 11. Sternite 8, gonocoxite ventral view. 12. Gonocoxite and hypandrium dorsal view. 13. Gonocoxite left lateral view. 14. Gonostylus left lateral view. 15. Aedeagus dorsal view (inset ejaculatory apodeme cross­section). 16. Aedeagus ventral view (inset ventral apodeme crosssection). 17. Aedeagus lateral view. 18. Female internal reproductive organs. Scale = 0.1 mm. 19. Distribution of Protothereva: triangle = P. ecuadorensis, circle = P. peruensis, square = P. g r i s e a.