Penniverpa unispinosa 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 : 40-43

publication ID

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

DOI

http://doi.org/10.5281/zenodo.6228418

persistent identifier

http://treatment.plazi.org/id/DB732851-FF9C-431E-FF1F-F884FDE6F6D7

treatment provided by

Plazi

scientific name

Penniverpa unispinosa Webb
status

spec. nov.

Penniverpa unispinosa Webb   spec. nov.

( Figs. 73 –77 View FIGURES 73 – 77 , 88 View FIGURE 88 )

Etymology. Unus (Latin) = one, whole; spina (Latin) = thorn, backbone. This name is used as an adjective.

Diagnosis. The male of Penniverpa unispinosa   is similar to P. bradleyi   and P. e p i d e m a in lacking setae medially on the posterior margin of sternite 8 (Fig. 7). It differs from P. b r a d l e y i and P. e p i d e m a in possessing macrosetae along the posterior margin of the gonocoxite ( Fig. 73 View FIGURES 73 – 77 ), the PVL of the ventral lobe in the form of a broad ventroapical point ( Fig. 74 View FIGURES 73 – 77 ), and the VMP positioned apically on the LGP of the gonostylus. It also differs from P. e p i d e m a in having the LGP of the gonostylus linear ( Fig. 74 View FIGURES 73 – 77 ). The female of Penniverpa unispinosa   is unknown.

Description of holotype MALE. Variation (n= 1).

Body length 6.8 mm.

Head. Length 0.80 mm. Ommatidia of equal size. Frons pubescence silver, dense; setae absent. Antenna (flagellum missing) dark brown, scape pubescence gray, dense; scape length 0.16 mm, length/width 1.6, scape/pedicel length 2.0, setae black, short, sparse; pedicel length 0.08 mm, length/width 0.7. Maxillary palpus dark brown; length 0.38 mm, length/width 6.3; setae dark brown. Genal setae white. Occipital setae white, sparse dorsomedially; macrosetae dark brown, extending as single row from lateral end of postocular macrosetae.

Thorax. Macrosetae 3 np, 2 sa. Mesonotum pubescence white, dense; setae dark brown, erect intermixed with white to whitish yellow, appressed setae. Pleuron pubescence gray; setae white on propleuron, anepisternum, katepisternum, laterotergite, and scutellum. Wing. Membrane pale gray; veins brown; length 5.4 mm, width 1.8 mm, length/width 3.0; pterostigma brown, narrow. Halter brown. Legs. Coxal setae white; hind coxa with anterior papillate knob. Femora dark brown, pubescence gray; ventral setae brown on fore– and midfemora, white dorsally; av 1:0: 1, pv 0:0: 3. Tibiae brown, apex dark brown. Tarsi dark brown.

Abdomen. Reddish brown, pubescence white, dense on posterior half of tergite 1, over all of tergites 2–8; dorsal setae white, elongate, appressed, denser across posterior margin. Terminalia   dark brown. Sternite 8 ( Fig. 73 View FIGURES 73 – 77 ), setae dark brown, absent medially on posterior margin. Gonocoxite ventral view ( Fig. 73 View FIGURES 73 – 77 ), setae dark brown, macrosetae dark brown posteriorly; ventral lobe ( Fig. 74 View FIGURES 73 – 77 ), PVL in form of broad ventroapical point. Gonostylus ( Fig. 74 View FIGURES 73 – 77 ), LGP oblong, apical setae dark brown, short, VMP elongate, positioned apically, apical setae short. Aedeagus with dorsal apodeme ( Fig. 75 View FIGURES 73 – 77 ), anterior margin truncate; ventral apodeme ventral view ( Fig. 76 View FIGURES 73 – 77 ), not reaching anterior margin of dorsal apodeme; distiphallus ( Fig. 75 View FIGURES 73 – 77 ) narrow basally, tapered posteriorly with dorsal spinous projections, ventral view ( Fig. 76 View FIGURES 73 – 77 ) AAP elongate with spinous projections, lateral view ( Fig. 77 View FIGURES 73 – 77 ), tapered posteriorly in broad curved.

FEMALE. Unknown.

IMMATURE STAGES. Unknown.

Habitats and phenology. Penniverpa unispinosa   was hand-netted in March.

Distribution. Penniverpa unispinosa   is known from Mexico (Quintana Roo) ( Fig. 88 View FIGURE 88 ).

Specimens examined. Type specimen. The holotype male of Penniverpa unispinosa Webb   [MEI 088464] is labeled " MEXICO, Quintana Roo, Allen Point, Ascension Bay, 17.IV 1960, J. F. G. Clarke" [19.74, - 87.47] and is deposited in the USNM.

PVL

Paleontologia de Vertebrados Lillo

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Therevidae

Genus

Penniverpa