Penniverpa unispinosa Webb, spec. nov.
Creators: name: Webb, Donald W.
name: Metz, Mark A.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Therevidae
Penniverpa
Penniverpa unispinosa

description: Penniverpa unispinosa Webb spec. nov.
(Figs. 73–77, 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), the PVL of the ventral lobe in the form of a broad ventroapical point (Fig. 74), 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). 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), setae dark brown, absent medially on posterior margin. Gonocoxite ventral view (Fig. 73), setae dark brown, macrosetae dark brown posteriorly; ventral lobe (Fig. 74), PVL in form of broad ventroapical point. Gonostylus (Fig. 74), LGP oblong, apical setae dark brown, short, VMP elongate, positioned apically, apical setae short. Aedeagus with dorsal apodeme (Fig. 75), anterior margin truncate; ventral apodeme ventral view (Fig. 76), not reaching anterior margin of dorsal apodeme; distiphallus (Fig. 75) narrow basally, tapered posteriorly with dorsal spinous projections, ventral view (Fig. 76) AAP elongate with spinous projections, lateral view (Fig. 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).
Specimens examined. Type specimen. The holotype male of Penniverpa unispinosa Webb [MEI 088464] is labeled " MEXICO, Quintana Roo, Allen Point, Ascension Bay, 17.IV1960, J. F. G. Clarke" [19.74, -87.47] and is deposited in the USNM.
description: Published as part of Webb, Donald W. & Metz, Mark A., 2008, A revision of the New World genus Penniverpa Irwin and Lyneborg (Diptera: Therevidae: Therevinae), pp. 1-45 in Zootaxa 1720 on pages 40-43, DOI: 10.5281/zenodo.181100