Notiothereva argentina, Webb, Donald W., 2005

Webb, Donald W., 2005, Revision of the Neotropical Stiletto Fly Genus Notiothereva Metz & Irwin (Diptera: Therevidae: Therevinae), Zootaxa 1059, pp. 1-32 : 15-19

Notiothereva argentina spec. nov.

( Figs. 9–15 , 44).

Etymology. This species is named after the country of Argentina from which this species was collected and is used as a noun in apposition.

Diagnosis. Like Notiothereva bezzii and N. brunnipes in having the frontal setae absent lateral to antennal base; parafacial lacking setae; and the gena with an anterodorsal patch of short, dark setae. It differs from N. bezzii and N. brunnipes in having the halter knob generally dark brown; fore­ and midcoxa with macrosetae yellow to dark yellow; and the posterior margin of male sternite 8 ( Fig. 10 ) deeply emarginate with setae absent medially on posterior margin.

Description of holotype male (MEI 106083).

Body length 8.2 mm.

Head. Length 1.24 mm. Frons pruinescence silver, dense; setae black, elongate, absent lateral to antennal base. Antenna dark brown, pruinescence gray on scape and pedicel, first flagellomere pale brown, darker dorsally, second and third flagellomeres dark brown; antenna/head length 0.65; scape length 0.22 mm, width 0.12 mm, length/width 1.8, scape/ pedicel length 2.2, scape/flagellum width 0.75, setae dark reddish brown, elongate grading into macrosetae; pedicel length 0.10 mm, length/width 0.8, setae dark reddish brown, short; flagellum length 0.49 mm, width 0.16 mm, length/width 3.1, flagellum/scape length 2.2. Parafacial pruinescence whitish gray, dense; setae absent. Maxillary palpus yellow, pruinescence white; length 0.52 mm, length/width 8.7; setae white, elongate. Genal setae white, elongate with small, anterodorsal patch of short, dark brown setae. Occipital setae white, elongate, scattered over all of dorsal surface; macrosetae dark brown, extending in row at end of postocular macrosetae.

Thorax. 3 np, 1 sa, 1 pa, 2 dc, 2 sc. Mesonotum dark brown, pruinescence brownish gray, vittae dull brown separated by lines of gray pruinescence; setae dark brown, erect, elongate intermixed with appressed, gold setae which become white laterally and across anterior margin. Postpronotal lobe setae white intermixed with dark brown setae. Cervical sclerite lacking setae. Pleuron pruinescence gray, dense; setae white, elongate on propleuron, anepisternum, katepisternum, laterotergite, and metanepisternum, gold on scutellum. Wing. Membrane opaque, occasionally with faint brown spot at r­m, fork of R4+5, and apical margin of cells bm, br, and dc; venation pale brown; length 6.2 mm, length/width 2.8; pterostigma dark brown; cell m 3 closed, petiolate. Halter knob generally dark brown (pale yellow occasionally). Legs. Coxa dark reddish brown, pruinescence white, dense; setae white, elongate; apical macrosetae dark yellow, a few dark reddish brown, apical macrosetae on hindcoxa. Femora dark reddish brown, pruinescence white; ventral setae white on fore­ and midfemora; dv 0:0:0, av 3:2:5, pv 0:0:4. Tibiae dark yellowish brown, apex dark reddish brown. Tarsomere 1 dark yellowish brown, apex dark reddish brown; 2–5 dark reddish brown.

Abdomen. Cuticle dark reddish brown, pruinescence gray, dense on tergite 1, anteriorly on tergites 2–5, extending posteriorly as posteromedial point, orange brown posteriorly on tergites 2–7 becoming wider on tergites 3–5; dorsal setae white, elongate, appressed on tergite 1 and orange brown areas of tergites 2–7 with dark brown, elongate, appressed setae on dark brown areas; lateral setae white, elongate. Terminalia (MEI 105864). Dark brown. Tergite 8 ( Fig. 9 ) setae dark brown. Sternite 8 ( Fig. 10 ) quadrate, anterior margin broadly rounded, sides rounded; posterior margin deeply emarginate; setae brown, absent medially on posterior margin. Epandrium ( Fig. 9 ) setae dark brown, scattered on posterior third. Cercus ( Fig. 9 ) ending above apex of hypoproct. Hypoproct ( Fig. 9 ) posterior margin rounded to truncate, ending below apex of cercus. Gonocoxite ( Figs. 10–11 ) globular, rounded laterally, tapering apically to broad point, setae dark brown, macrosetae dark brown, setae on inner gonocoxal process dark yellow. Aedeagus with dorsal apodeme ( Fig. 12 ) anteromedial projection short, truncate; ventral apodeme ( Fig. 13 ) narrow, tapered anteriorly, not reaching anterior margin of dorsal apodeme; distiphallus dorsal view ( Fig. 12 ) broad basally, tapered posteriorly, with two narrow carinas, basiphallus with median carina; lateral view ( Fig. 14 ) broadly curved ventrally; ejaculatory apodeme ( Fig. 12 ) anterior third expanded, dark brown, anterior margin rounded.

Morphometric variation (n=10).

Body length 6.3–8.4, 7.4 mm.

Head. Length 0.98–1.30, 1.15 mm. Antenna/head length 0.55–0.65, 0.58; scape length 0.14–0.22, 0.18 mm, width 0.10–0.14, 0.12 mm, length/width 1.2–1.8, 1.5, scape/pedicel length 1.8–2.5, 2.2, scape/flagellum width 0.6–0.9, 0.7, pedicel length 0.08–0.10, 0.08 mm, length/width 0.6–0.8, 0.7, flagellum length 0.34–0.49, 0.40 mm, width 0.14–0.19, 0.17 mm, length/width 2.1–3.1, 2.4, flagellum/scape length 1.9–2.4, 2.2. Maxillary length 0.28–0.52, 0.41 mm, length/width 4.7–8.7, 6.7.

Thorax. Macrosetae 2–3 np, 1–2 sa, 1 pa, 1–2 dc, 2 sc. Wing. Length 5.0–6.7, 6.0 mm, length/width 2.8–3.6, 3.0. Legs. Anterodorsal macrosetae 0:0:0, av 2–3:2–4:5–7, pv 0:0:2–4.

Female.

Morphometric variation (n=10).

Body length 5.7–9.4, 7.8 mm.

Head. Length 1.00–1.38, 1.16 mm. Frons pruinescence gray brown; setae dark brown, paler ventrally, moderately long. Antenna/head length 0.54–0.63, 0.59; scape length 0.16–0.22, 0.20 mm, width 0.12–0.16, 0.13 mm, length/width 1.3–1.8, 1.5, scape/pedicel length 2.0–2.8, 2.5, scape/flagellum width 0.7–0.8, 0.7; pedicel length 0.08–0.10, 0.08 mm, length/width 0.6–0.7, 0.6; flagellum length 0.0.30–0.53, 0.40 mm, width 0.16–0.20, 0.18 mm, length/width 1.9–2.7, 2.2, flagellum/scape length 1.5–2.4, 2.0. Maxillary palpus length 0.32–0.62, 0.46 mm, length/width 5.3–10.3, 7.7. Occipital setae whitish yellow dorsally; macrosetae dark brown, scattered.

Thorax. Macrosetae 3 np, 1 sa, 1 pa, 2 dc, 2 sc. Wing. Length 5.9–7.7, 6.5 mm, length/ width 2.8–3.4, 3.0. Legs. Coxal macrosetae dark reddish brown apically on hindcoxa, lateral macroseta dark yellow. Anterodorsal macrosetae 0:0:0, av 2–3:2–4:5–9, av 0–6:2–5:2–7.

Abdomen. Dark reddish brown, posterior margin of tergites 2–4 dark yellowish brown, pruinescence gray, dense on tergites 1 and 5 and posterolaterally on tergites 2–4; dorsal setae white, erect, elongate on tergite 1, dark brown, appressed on dark brown areas of tergites 2–4, white posterolaterally on tergites 2–4, dark brown on tergites 5–8; lateral setae white, erect on tergites 1–4, dark brown on tergites 5–8. Terminalia (MEI 106032). Furca ( Fig. 15 ) quadrate, sides rounded; length 0.50 mm, width 0.36 mm; anterolateral projection short.

Immature stages. Unknown.

Distribution. Notiothereva argentina is known from Argentina ( Fig. 44).

Habitats and Temporal Phenology. Notiothereva argentina has been hand­netted in large, dry, rocky washes; collected in Malaise traps set in dry hillside ravines, near a wet spot in a wash, in a wash with running water, at the base of a mountain in a wash, and near water in side canyon; and in pan traps set in a side canyon, and set in a wash with some water. The majority of specimens of Notiothereva argentina were collected in November, but specimens have been collected in January, March, September, and October.

Specimens Examined. Type specimen. The holotype male of Notiothereva argentina Webb is labeled " ARGENTINA , Tucuman Prov. Quebrada Las Canas, nr. Ruinas de Quilmes, 18–X–1997, 5920 ft.; large dry rocky wash, M.E.Irwin, F.D. Parker, S.Roig, 22–X–1997; 26.46551°S. 66.0370°W." (MEI 106083) and is deposited in CAS (Type No. 18060). PARATYPES. ARGENTINA . CATAMARCA. 2 km N Belen, Quebrada Belen [­ 27.616, ­67.013], 1094 m, 17–19.X.1997, MEI, FDP, Roig, S., 2 females MEI 106119–20 (MEI), Malaise trap in dry hillside ravine; 6 km N Belen [­27.629, ­67.016], 1375 m, 7–8.IX.1999, MEI, FDP, 1 female MEI 164922 (MEI); 2 km S San Fernando [­27.337, ­ 66.906], 1646 m, 17–19.X.1997, MEI, FDP, Roig, S., 2 males MEI 107237–8 (MEI), Malaise trap in dry wash; Sierra de Ambato, 13 km NW Chumbicha [­28.833, ­66.408], 700 m, 4–6.IX.1999, MEI, FDP, 1 female MEI 121143 (MEI), Malaise trap near water in side canyon; 6.IX.1999, MEI, FDP, 2 females MEI 115333–4, (MEI), pan trap in side canyon, 2 females 164878–9 (MEI), Malaise trap; 6–9.IX.1999, MEI, FDP, 2 males MEI 115429, 115454, 2 females 115430–1 (MEI), Malaise trap near water in side canyon; 9–13.IX.1999, MEI, FDP, 1 male MEI 115385, 1 female 121754 (INHS), Malaise trap near water in side canyon; 10–13.IX.1999, 1 male MEI 115278, 1 female 115276 (CAS), Malaise trap near water in side canyon; 13–15.IX.1999, 1 male MEI 113293, 1 female 114388 (CNC), Malaise trap near water in side canyon; 5.XI.1999, 1 female MEI 164910; Sierra de Ambato, 16 km NW Chumbicha, Hwy 60 [­28.811, ­66.402], 760 m, 5.IX.1999, MEI, FDP, 1 female MEI 164911 (MEI), Malaise trap; 9–13.IX.1999, MEI, FDP, 1 female MEI 115251 (MEI), Malaise trap in large dry wash; Sierra de Ambato, 18 km NW Chumbicha, Hwy 60 [­28.803, ­66.389], 950 m, 5–6.IX.1999, MEI, FDP, 1 male MEI 166056 (MEI), Malaise trap; 13.IX.1999, MEI, FDP, 2 males MEI 115339–40, 8 females 115337–8, 115341–6 (MEI), Malaise trap in steep ravine; 13–15.IX.1999, 1 female MEI 121747 (MEI), Malaise trap; 5–6.XI.1999, 1 female MEI 164907, Malaise trap; Sierra de Ambato, 19 km NW Chumbicha, Hwy 60 [­28.803, ­66.387], 853 m, 9–13.IX.1999, MEI, FDP, 2 females MEI 121760 –1 (MEI), Malaise trap in dry wash; 4 km West Chumbicha [­ 28.856, ­66.269], 440 m, 13.XI.1999, MEI, FDP, 2 females MEI 164920, 164923 (MEI); 15.XI.1999, 1 female MEI 164937 (MEI). LA RIOJA. 20 km N Chepes, W. base of Sierra de Argañaraz [­31.217, ­66.721], 600 m, 2–11.IX.1999, MEI, FDP, 2 males MEI 115462, 115466, 1 female 11546 (MEI), Malaise trap at base of mountain in wash; Sierra de Argañaraz, 24 km N Chepes [­31.208, ­66.713], 825 m, 2.IX.1999, MEI, FDP, 1 female MEI 164924 (MEI); 3–11.IX.1999, 1 female MEI 164935 (MEI). 25 km N Chepes, Sierra de Argañaraz, El Rocillo [­31.203, ­66.712], 850 m, 2.IX.1999, MEI, FDP, 1 male MEI 114838, 1 female 114836 (USNM), Malaise trap in wash with running water; 2–11.IX.1999, MEI, FDP, 2 males MEI 166044, 166053 (MEI), Malaise trap in wash with running water; 11–16.IX.1999, male MEI 114852, 1 female 114854 (MEI), Malaise trap in wash with running water; 2.XI.1999, 2 males MEI 166057 (MEI), Malaise trap 166038 (MEI), pan trap 1 female 164876 (MEI), Malaise trap; 3.XI.1999, 3 females MEI 164913, 164915, 164930 Malaise trap; 28 km N Chepes, Sierra de Argañaraz, Higuerita [­31.189, ­ 66.69], 930 m, 2–11.IX.1999, MEI, FDP, 1 male MEI 114853, 1 female 115244 (BMNH), Malaise trap in side wash; 11–16.IX.1999, 1 male MEI 115321, 1 female 115324 (FSCA); 29 km N Chepes, Sierra de Argañaraz [­31.18, ­66.688], 1020 m, 2–11.IX.1999, MEI, FDP, 1 female MEI 115475; 11–16.IX.1999, 2 males MEI 115467, 115470, 1 female 115468 (MEI); 6 km W Nonogasta, E side Cuesta Miranda [­29.345, ­67.695], 1500 m, 12–15.X.1997, MEI, FDP, Roig, S., 1 male MEI 107324, 1 female 107338 (CSCA), Malaise trap; Sierra de Argañaraz, El Rocillo [­31.207, ­66.713], 722 m, 22.X.1997, MEI, FDP, Roig, S., 1 male MEI 107409 (MEI), pan trap in wash with some water; Chilecito, Sierra de Sañogasta, Los Tambillos, 5 km E Piedra Pintada [­29.36, ­67.786], 792 m, 12–15.X.1997, MEI, FDP, Roig, S., 4 males MEI 107206–9, 1 female 107211 (MEI), Malaise trap; Famatina, Sierra de Toto Negro, 10 km N Famatina, Hwy 40 [­28.959, ­ 67.471], 1356 m, 15–20.X.1997, MEI, FDP, Roig, S., 1 male MEI 107229, 1 female 107230 (EMUS); east base of Sierra de Argañaraz [­31.221, ­66.728], 610 m, 11–23.X.1997, MEI, FDP, Roig, S., 1 male MEI 107404 (MEI), Malaise trap in wet spot in wash; Rosaro V. Peòaloza, Sierra de Argañaraz, 1 km W El Rocillo [­31.207, ­66.714], 716 m, 22.X.1997, MEI, FDP, Roig, S., 1 male MEI 105827 (MEI), Malaise trap in dry canyon; Sierra de Ambato, 19 km SE Estacion Mazan, Hwy 60 [­28.719, ­66.361], 1100 m, 5.IX.1999, MEI, FDP, 1 female MEI 164918, Malaise trap; Sierra de Ambato, 26 km SE Estacion Mazan, Hwy 60 [­28.767, ­66.378], 1050 m, 5–6.XI.1999, MEI, FDP, 1 female MEI 164938 (MEI); 6.XI.1999, 2 females MEI 164921, 164931 (MEI). SALTA. 8 km NW Cafayate, Yacochuya [­26.019, ­66.031], 1900 m, 20.III.1974, Vardy, C. R., 1 female MEI 109341 (BMNH); 97 km NNW Cafayate, 2 km SE Brealito [­25.303, ­ 66.336], 2360 m, 18.X.2003, Blank, S.M., Kutzscher, C., 2 males MEI 157407–8, 1 female 157386 (IMLA). TUCUMAN. Quebrada La Canas, near Ruinas de Quilmes [­ 26.466, ­66.037], 1804 m, 18.X.1997, MEI, FDP, Roig, S., 1 male MEI 106084 (MEI).

Numerous duplicate specimens of N. argentina were collected by M. E. Irwin at various localities. Complete information on the total number of specimens collected by M. E. Irwin can be obtained from the author.

Figures

FIGURES 1 – 15. 1 – 8. Notiothereva albiventris. 1. Tergite 8, epandrium, cerci, hypoproct, dorsal view. 2. E pandrium, lateral view. 3. Sternite 8, hypandrium, gonocoxite, ventral view. 4. Gonocoxite, hypandrium, dorsal view. 5. Aedeagus, dorsal view. 6. Aedeagus, ventral view. 7. Aedeagus, left lateral view. 8. Female internal reproductive organs. 9 – 15. N. argentata. 9. Tergite 8, epandrium, cerci, hypoproct, dorsal view. 10. Sternite 8, hypandrium, gonocoxite, ventral view. 11. Gonocoxite, hypandrium, dorsal view. 12. Aedeagus, dorsal view. 13. Aedeagus, ventral view. 14. Aedeagus, left lateral view. 15. Female internal reproductive organs. Scale = 0.1 mm. Abbreviations: 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, igp = inner gonocoxal process. Sp = spermatheca, SpD = spermathecal duct, SpS = spermathecal sac, SS = sensory seta, S 8 = sternite 8, T 8 = tergite 8, VA = ventral apodeme, VL = ventral lobe.