Penniverpa bradleyi 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 : 10-11

Penniverpa bradleyi Webb spec. nov.

(Figs. 7–11, 89)

Etymology. This species is named for my grandson Bradley Webb McClain.

Diagnosis. The male of Penniverpa bradleyi is similar to P. epidema and P. unispinosa in lacking setae medially on the posterior margin of sternite 8 (Fig. 7). It differs from P. e p i d e m a in possessing macrosetae along the medial margin of the gonocoxite (Fig. 7), the ventral lobe lacking a PVL (Fig. 8), and the LGP of the gonostylus linear (Fig. 8). It differs from P. unispinosa in having the ommatidia smaller ventrally and laterally, in possessing macrosetae along the medial margin of the gonocoxite (Fig. 7), and the PVL of the ventral lobe absent (Fig. 8), and ventral apodeme (Fig. 10) ending beyond the anterior margin of the dorsal apodeme. The females of Penniverpa bradleyi and P. unispinosa are unknown.

Description of MALE. Variation (n=5).

Body length 6.8–7.5, 7.1 mm.

Head. Length 0.82–0.90, 0.88 mm. Ommatidia smaller ventrally and laterally. Frons pubescence white, dense; setae absent. Antenna dark brown, scape pubescence gray; antenna/head length 0.7–0.8, 0.7; scape length 0.14–0.18, 0.16 mm, width 0.10–0.11, 0.10 mm, length/width 1.3–1.8, 1.6, scape/pedicel length 1.6– 2.3, 1.9, scape/flagellum width 0.8–1.1, 0.9, setae dark brown, short; pedicel length 0.08–0.10, 0.08 mm, length/width 0.7–1.0, 0.8; flagellum oval, tapered apically, length 0.38–0.40, 0.39 mm, width 0.10–0.12, 0.10 mm, length/width 3.2–4.0, 3.5, flagellum/scape length 2.1–2.9, 2.4. Parafacial pubescence white. Maxillary palpus dark brown; length 0.36–0.42, 0.39 mm, width 0.06–0.08, 0.08 mm, length/width 4.5–6.3, 5.2; setae dark brown, elongate. Genal setae white. Occipital setae white, sparse dorsolaterally; macrosetae dark brown, scattered ventrally from lateral end of postocular macrosetae.

Thorax. Macrosetae 3 np, 2 sa. Mesonotum with vittae dark brown separated by dense gray pubescence; setae dark brown, erect intermixed with white, appressed setae. Postpronotal setae white. Pleuron pubescence gray; setae white, elongate on propleuron, anepisternum, katepisternum, laterotergite, and scutellum. Wing. Membrane pale brown; veins brown; length 6.1–6.3, 6.2 mm, width 2.2–2.3, 2.2 mm, length/width 2.7–2.9, 2.8; pterostigma pale brown, narrow. Halter brown. Legs. Coxae brown, pubescence silver; hind coxa with anterior papillate knob; setae white. Femora dark brown, pubescence gray; ventral setae brown on fore- and midfemora; av 0–1:0–1:1–2, pv 0:0:2–5. Tibiae dark yellowish brown grading into brown apically (paler than femora). Tarsi dark brown.

Abdomen. Dark brown, pubescence white, dense on posterior half of tergite 1, over all of tergites 2–8; dorsal setae white, elongate, appressed forming dense band across posterior margin; lateral setae white. Terminalia (MEI 080264). Sternite 8 (Fig. 7), setae dark brown, separated medially on posterior margin. Gonocoxite ventral view (Fig. 7), setae dark brown, macrosetae dark brown along medial margin; ventral lobe (Fig. 8), PVL absent. Gonostylus (Fig. 8), LGP oblong, apical macrosetae elongate, dark brown, VMP narrow, apical setae short. Aedeagus with dorsal apodeme (Fig. 9), anterior margin emarginate; ventral apodeme (Fig. 10), extending beyond anterior margin of dorsal apodeme; distiphallus dorsal view (Fig. 9), broad basally, tapered posteriorly with large, dorsal spinous projections, ventral view (Fig. 10), AAP elongate with large, apical, spinous projections, lateral view (Fig. 11), tapered posteriorly in broad curve.

FEMALE. Unknown.

Distribution. Penniverpa bradleyi is known from Mexico (Veracruz) ( Fig. 89 ).

Habitats and Phenology. Specimens of Penniverpa bradleyi have been hand-netted in March.

Specimens examined. Type specimens. The holotype male of Penniverpa bradleyi Webb (MEI 080265) is labeled " MEXICO, Veracruz, Actopan, La Mancha, 4-8, III-1995, V. Hernández O." and is deposited IEXA. PARATYPES. MEXICO. VERACRUZ. [Municipio] Actopan, La Mancha [19.5801, -96.3825], 4–8.III.1995, Hernández-O. V., 3ɗ MEI 0 80263 (USNM), 0 80262 (IEXA), 0 80264 (INHS).

Figures

FIGURE 89. Penniverpa spp., distribution map. alvatra (open circle), bradleyi (open square), dives (closed circle), evani (closed triangle), gracilis (open triangle), megaplax (asterisk), multisetosa (closed square).