Penniverpa alvatra Irwin & Webb

Webb, Donald W. & Metz, Mark A., 2008, A revision of the New World genus Penniverpa Irwin and Lyneborg (Diptera: Therevidae: Therevinae), Zootaxa 1720, pp. 1-45: 7-10

publication ID

http://doi.org/ 10.5281/zenodo.181100

DOI

http://doi.org/10.5281/zenodo.6228392

persistent identifier

http://treatment.plazi.org/id/DB732851-FFBD-433D-FF1F-F9C6FE25F55F

treatment provided by

Plazi

scientific name

Penniverpa alvatra Irwin & Webb
status

 

Penniverpa alvatra Irwin & Webb  

( Figs. 1 –6 View FIGURES 1 – 6 , 78 View FIGURES 78 – 87 , 89 View FIGURE 89 )

alvatra Irwin and Webb   (1992: 88 checklist, 107 male desc. 109 dist., Figs. 79 View FIGURES 78 – 87 male ant., 80 male max. palp., 81 male wing, 82– 87 male genit., 88–89 fem. genit.) ( Penniverpa   ). Type locality Brazil, Roraima, Río Uraricoera, Ilha de Maracá. Holotype male in INPA.

alvadusta Irwin and Webb   (1992: 88 checklist, 106 fem. desc., 107 dist., Figs. 77–78 View FIGURES 73 – 77 View FIGURES 78 – 87 fem. genit.) ( Penniverpa   ). Type locality Brazil, Amazonas, Manaus. Holotype female in INPA. New synonym.

A re-examination of the holotype female and two paratypes of Penniverpa alvadusta   confirmed that the variation in abdominal coloration was conspecific with that observed in the paratype females of P. alvatra   . Penniverpa alvadusta   is thus synonymized under P. alvatra   . As first reviser, I chose P. a l v a t r a as the valid name for this species because the holotype of P. a l v a t r a is a male and would best serve the stability and universality of nomenclature.

Diagnosis. The male of Penniverpa alvatra   is similar to P. dives   in having the tibiae concolorous with the femora; the gonocoxite lacking dark reddish brown macrosetae ( Fig. 1 View FIGURES 1 – 6 ); in having setae continuous across the posterior margin of sternite 8 ( Fig. 1 View FIGURES 1 – 6 ); the ventral lobe lacking a PVL ( Fig. 2 View FIGURES 1 – 6 ); and the LGP of the gonostylus ( Fig. 2 View FIGURES 1 – 6 ) lacking a VMP. It differs from P. dives   in having the LGP of the gonostylus ( Fig. 2 View FIGURES 1 – 6 ) with short apical setae and the distiphallus in dorsal view ( Fig. 13 View FIGURES 12 – 17 ) with small spines dorsolaterally or a few short dorsal spinous projections. The female differs from P. d i v e s in having white pubescence posterolaterally on tergites 1–3 and 5–6 ( Fig. 78 View FIGURES 78 – 87 ).

Redescription of MALE. Variation (n= 4)

Body length 7.0–8.0, 7.3 mm.

Head. Length 0.77–0.90, 0.86 mm. Ocellar tubercle dark reddish brown, pubescence gray; setae black, elongate. Ommatidia of equal size. Frons with silver pubescence; setae absent. Antenna dark brown, gray pubescense on scape and pedicel, antenna/head length 0.69–0.77, 0.74; scape length 0.12–0.18, 0.16 mm; width 0.09–0.10, 0.10 mm, length/width 1.3–1.8, 1.6, scape/pedicel length 1.5 –2.0, 1.9, scape/flagellum width 0.9 –1.0, 1.0, setae dark brown, short; pedicel length 0.08–0.09, 0.08 mm, width 0.10 mm, length/width 0.8– 0.9, 0.8; flagellum length 0.38–0.42, 0.40 mm, width 0.10 mm, length/width 3.8–4.2, 4.0, flagellum/scape length 2.3–3.3, 2.7. Maxillary palpus dark brown; length 0.38–0.44, 0.41 mm, width 0.06–0.08, 0.07 mm, length width 5.5 –7.0, 6.4. Occipital setae white, sparse dorsally; macrosetae dark reddish brown, extending ventrally in single row from lateral end of postocular setae.

Thorax. Macrosetae 3 np, 2 sa. Mesonotum black, pubescence silver gray, dense; setae white, elongate, erect intermixed with black, short subappressed setae. Pleuron pubescence silver gray; setae white on propleuron, anepisternum, katepisternum, laterotergite and scutellum. Wing. Membrane pale whitish brown, veins brown; pterostigma pale brown; length 5.2–6.5, 6.2 mm, width 1.8–2.3, 2.1 mm, length/width 2.9 –3.0, 2.9. Halter dark brown. Legs. Coxa dark brown, pubescence gray, setae white; hindcoxa with anterior papillate knob. Femora dark brown; ventral setae white; av 1:0: 2–3; pv 0:0: 6–7. Tibiae and tarsi dark brown, glossy.

Abdomen. Dark reddish brown to black, pubescence silver; dorsal setae white, elongate, appressed. Terminalia   (MEI 006898). Sternite 8 ( Fig. 1 View FIGURES 1 – 6 ), posterior margin broadly emarginate; setae dark brown, continuous across posterior margin. Gonocoxite ventral view ( Fig. 1 View FIGURES 1 – 6 ), setae dark brown; ventral lobe ( Fig. 2 View FIGURES 1 – 6 ), PVL absent. Gonostylus dorsal view ( Fig. 2 View FIGURES 1 – 6 ), LGP oblong, apical macrosetae short, dark brown, VMP absent. Aedeagus with dorsal apodeme emarginate anteriorly ( Fig. 3 View FIGURES 1 – 6 ); ventral apodeme ( Fig. 4 View FIGURES 1 – 6 ), extending beyond anterior margin of dorsal apodeme; distiphallus dorsal view ( Fig. 3 View FIGURES 1 – 6 ), broad basally, tapered posteriorly with small apical flange, and large dorsolateral spinous projections absent, ventral view ( Fig. 4 View FIGURES 1 – 6 ), AAP elongate with apical spinous projections directed dorsally, lateral view ( Fig. 5 View FIGURES 1 – 6 ), sinuate apically.

FEMALE. Variation (n= 10).

Body length 7.8–8.8, 8.0 mm.

Head. Length 0.70–0.83, 0.79 mm. Frons pubescence white, dense; setae black, short, on dorsal half. Antenna /head length 0.7–0.8, 0.8; scape length 0.16–0.20, 0.17 mm, width 0.10–0.12, 0.11 mm, length/width 1.3–1.7, 1.6, scape/pedicel length 1.6–2.3, 2.0, scape/flagellum width 0.8 –1.0, 0.9; pedicel length 0.08–0.10, 0.09 mm, width 0.10–0.12, 0.11, length/width 0.7 –1.0, 0.8; flagellum length 0.36–0.48, 0.42 mm, width 0.11– 0.14, 0.12 mm, length/width 3.0–4.0, 3.5, flagellum/scape length 2.2–2.9, 2.5. Maxillary palpus length 0.30– 0.44, 0.41 mm, width 0.08–0.09, 0.08 mm, length/width 3.8–5.5, 5.0; setae dark brown, elongate.

Thorax. Macrosetae 3 np, 2 sa. Wing. Length 5.2 –7.0, 6.3 mm, width 1.8 –2.0, 1.9 mm, length/width 2.7– 3.5, 3.2. Legs. Anteroventral macrosetae 1:0: 1–4, pv 0:0: 2–5.

Abdomen. Dark reddish brown, glossy ( Fig. 78 View FIGURES 78 – 87 ), tergites 1 –3, 5– 6 with white pubescence posterolaterally; dorsal setae dark brown on dark brown areas, white, elongate across posterior margins of tergites 1–3.

Terminalia   (MEI 147855). Furca ( Fig. 6 View FIGURES 1 – 6 ) oblong; length 0.74 mm, width 0.30 mm; anterolateral projection short.

Distribution. Penniverpa alvatra   is known from northern Brazil and southern Venezuela ( Fig. 89 View FIGURE 89 ). Habitats and phenology. Specimens of Penniverpa alvatra   have been hand-netted or collected in Malaise traps in March, May, July, and August.

Specimens examined. Type specimen. The holotype male of Penniverpa alvatra Irwin & Webb   (MEI 006898) is labeled “ BRASIL: Roraima, Ilha de Maraca, 2–13.III. 1987, J. A. Rafael, J. E. R. Brasil, L. S. Aquino” [- 2.117, - 56.117] and is in INPA. Other specimens. BRAZIL. AMAZONAS. Manaus [- 3.105, - 60.027], 28.X. 1978, Rafael, J.A., 1 Ψ MEI 0 0 6909 ( INHS). RORAIMA. Rio Uraricoera, Ilha de Maraca, [- 2.117, - 56.117], 20–30.III. 1987, Aquino, L.S., 3 ɗ MEI 0 0 6899 ( INHS), 3 Ψ MEI 0 0 6903, 0 0 6907 ( INPA), 0 0 6908 ( MEIC), Malaise trap; 2–13.V. 1987, Rafael, J.A., Brasil, J.E.R., Aquino, L.S., 4 Ψ MEI 0 0 6900 ( USNM), 0 0 6904 ( MZSP), 006905– 6 ( INPA); 1–4.III. 1988, Rafael, J.A., 2 Ψ MEI 0 0 6901 ( INHS), 0 0 6902 ( INPA), Malaise trap; Bonfim Ig. Arraia, Warredu [3.0833, -59.9500], – V– 1991, Rafael, J.A., Rocha, R.A., Vidal, J., 1 ɗ MEI 147879, 1Ψ 147855 ( INPA). RONDONIA. Ouro, Preto do Oeste, Igarapé Mandi [- 10.6667, - 62.3], 06– 12.VII. 1995, Rafael, J.A., Vidal, J. 1 Ψ MEI 147881 ( INPA), Malaise trap. VENEZUELA. AMA- ZONAS. San Carlos de Rio Negro [1.917, - 67.067], 125 m, 19–31.VIII. 1976, Salcedo, J., Ag. Fernandez, B., 1 ɗ MEI 121644 ( MIZA).

INPA

Instituto Nacional de Pesquisas da Amazonia

PVL

Paleontologia de Vertebrados Lillo

INHS

Illinois Natural History Survey

USNM

Smithsonian Institution, National Museum of Natural History

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

MIZA

Museo del Instituto de Zoologia Agricola Francisco Fernandez Yepez

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Therevidae

Genus

Penniverpa