Anastrepha Main | Tephritidae Main | Diptera Home | SEL Home

Anastrepha stonei Steyskal

Recognition
Anastrepha stonei belongs to the daciformis species group, which differs from other species of Anastrepha in having the basal third of the scutellum brown, the male phallus extremely short (less than 0.30 mm long) and with the glans absent (as in the dentata group), and with the female eversible membrane dorsobasally with a single, medially interrupted row of very stout scales. It differs the other species except A. maculata in having a complete V-band, and from all other species of the daciformis group in having the dorsocentral pale stripe extended posteriorly from the transverse suture to beyond the dorsocentral seta; the scutum with numerous discrete dark brown spots or stripes; and the wing with 3-4 dark brown marginal spots and another on R-M. See recognition section for A. maculata for additional characters to distinguish these two species.

Description
Body predominantly yellow to orange.

Head: Mostly yellow. Frons with ocellar tubercle and elongate triangular spots along eye margin brown, these spots not connected. Gena with large brown spot below eye. Posterior orbital seta absent.

Thorax: Scutum with following dark brown areas: spot posterior to middle of postpronotal lobe; stripe, sometimes interrupted, between sublateral pale stripe and postsutural supra-alar and postalar setae; usually spot mesal to intra-alar seta; and usually an unpaired spot between acrostichal setae. Medial pale stripe expanded posteriorly and connected to dorsocentral stripe or narrow and isolated. Presutural dorsocentral pale stripe connected anteriorly to pale area on postpronotal lobe, connected to pale sublateral stripe at transverse suture, and extended posteriorly to dorsocentral seta. Presutural lateral pale stripe well differentiated, complete, including posterior part of notopleuron. Scutellum with pair of dark brown lateral spots or short bands between yellow basal and white apical areas, sometimes almost connected medially. Pleuron with following dark brown areas: two dorsal spots and usually one posteroventral spot on anepisternum; anterodorsal and posteromedial spots on katepisternum; medial spot on anepimeron; posterior half of katatergite and extreme posteroventral corner of anatergite; and spot on metapleuron. Subscutellum orange, often with medial dark brown spot; mediotergite entirely orange. Scutum nonmicrotrichose except lateral margin lateral to postsutural supra-alar seta; notopleuron and scutellum entirely nonmicrotrichose.

Wing: Bands yellow, orange and brown; also with small discrete brown spots, usually 4 along costal margin and 1 at anterior end of r-m. C- and S-bands completely fused along costa, forming uninterrupted marginal band; cell R1 without hyaline marginal area. C-band not covering most of cell r2+3 basal to level of r-m. S-band complete (Dominican Republic female) or interrupted in cell r2+3 and along vein Cu1; basally with broad extension across vein Cu2+A1 to or almost to posterior wing margin; middle part extended anteriorly to vein R4+5 along r-m; subapically moderately broad, hyaline area in cell r2+3 extended almost to vein R2+3; apically narrow or of medium breadth, extended to or usually well separated from apex of vein M. V-band complete, not connected to S-band along vein R4+5. Vein M strongly curved apically; M ratio 1.27-1.40.

Wings: Bahamas; Dominican Republic.

Abdomen: Tergites white to yellow, with medial dark brown bands or rows of spots.

Male terminalia: Lateral surstylus very short, barely extended beyond prensisetae. Phallus extremely short, less than 0.30 mm long; glans absent.

Female terminalia: Oviscape length 2.79-3.24 mm, 1.16-1.31 times as long as mesonotum. Eversible membrane, on expanded basal part, with most dorsal scales weakly sclerotized, but with one, medially interrupted row of large, strongly sclerotized, hooklike scales. Aculeus slender, no more than 0.05 mm wide, except at base, length 2.56-2.77 mm; tip needlelike, nearly circular in cross-section, with a few fine apical serrations, length 0.12-0.15 mm, width 0.025-0.03 mm.

Aculeus tip, ventral.