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Anastrepha bistrigata Bezzi

Recognition
Anastrepha bistrigata differs from all other species of Anastrepha except A. striata Schiner in having the dorsal posterior margin of the epandrium with a narrow, V-shaped, medial indentation, and by the following combination of characters: mesonotum with large, somewhat U-shaped, brown area, narrowed at transverse suture, but without other brown markings; mediotergite and subscutellum entirely brown or at least brown laterally; thoracic pleuron and abdomen without brown areas; and scutum microtrichose, with broad nonmicrotrichose stripe on dorsocentral line, sometimes interrupted at transverse suture. These two species share additional characters, including: wing bands, particularly middle section of S-band, mostly orange brown; cell br with hyaline area posterior to pterostigma extending width of cell, reaching vein R4+5; aculeus tip broad, at least 0.17 mm wide, and bluntly triangular; and lateral surstylus with rounded subapical lateral lobe. Anastrepha bistrigata differs from A. striata as follows: oviscape more than 3.0 mm long, more than 0.90 times mesonotum length; aculeus more than 3.0 mm long; scutum with brown area narrowed but uninterrupted at transverse suture, setulae yellow and brown, less dense but more or less continuous lateral to postsutural nonmicrotrichose area; distal section of S-band slender, at apex of vein R2+3 0.36-0.44 times width of cell r2+3; aculeus tip 0.35-0.40 mm long (vs. 0.24-0.31 mm in A. striata); and lateral surstylus slightly shorter and stouter and slightly divergent distally from the opposite surstylus. The scutal microtrichia are less dense and not as white in appearance in oblique anterior view as in most A. striata, and the wing bands are usually slightly browner.

Habitus, female..

Description
Largely orange with dark brown and yellow markings. Setae red-brown to dark brown.

Head: Yellow except ocellar tubercle brown. Facial carina, in profile, concave. 3-5, usually 4, frontal setae; 2 orbital setae, posterior seta well developed. Ocellar seta weak and small or minute. Antenna extended 0.70-0.80 distance to lower facial margin.

Thorax: Mostly orange with following areas yellow and often contrasting: postpronotal lobe; single medial and paired sublateral vittae on scutum, the slender medial vitta extended nearly full length of scutum, broadened posteriorly, but extended laterally at most half distance from level of acrostichal seta to that of dorsocentral seta; sublateral vitta extended from transverse suture almost to posterior margin, including intra-alar seta; scutellum except extreme base of disc (brown area well separated from basal seta); propleuron; dorsal margin of anepisternum; dorsal half of greater ampulla; dorsal margin of katepisternum; katepimeron; and most of anatergite and katatergite. Mesonotal pattern with following orange areas: broad area bordering medial vitta, large sublateral presutural area, broad area bordering mesal margin of sublateral vitta, and area lateral to sublateral vitta except extreme posterior margin. Dark brown, somewhat U-shaped mark narrowed, but not interrupted at transverse suture. Darker areas of pleuron orange. Subscutellum and mediotergite dark brown, narrowly orange medially. Mesonotum 2.91-3.52 mm long. Scutum microtrichose except for short medial presutural bare area extended no more than one third distance to transverse suture and broad stripe between medial and sublateral vittae, including dorsocentral seta, narrowed or narrowly interrupted at transverse suture; setulae mostly yellow medially, mostly pale to moderate brown on and lateral to nonmicrotrichose area. Katepisternal seta moderately developed, weaker but longer than postocellar seta, brown.

Wing: Length 6.58-8.15 mm. Vein M strongly curved apically; section between BM-Cu and R-M 2.05-2.43 times as long as section between R-M and DM-Cu; section between R-M and DM-Cu 0.72-0.89 times as long as DM-Cu. Crossvein DM-Cu oblique, with anterior end more distal than posterior end. Pattern mosly pale to moderate brown or orange brown. C-band and S-band narrowly to broadly connected along vein R4+5, but separated basally by hyaline area extending width of cell br and aligned with pterostigma, and covering basal fifth to third of cell dm and all of cell bm. C-band with cell bc and most of posterior half of cell c yellowish to subhyaline, and large yellow area in base of cell sc and cells r1 and r2+3 posterior to pterostigma, extending distally to or almost to level of apex of vein R1; anterior margin of band, including most of pterostigma, narrow distal margin, and base of cell br moderate brown. S-band largely yellow in cells dm and br, yellow area broadly extended to R-M and vein R4+5; middle section of band anterior to vein R4+5 brown, usually with orange brown areas within it; distal section of band slender, at apex of vein R2+3 0.36-0.44 times width of cell r2+3; separated from apex of vein M. Hyaline spot in cell r1 nearly triangular, usually extended to vein R4+5, sometimes interrupted in cell r2+3; its apex aligned distinctly basal to R-M. V-band with distal arm present, complete or often partially or entirely weak or absent in cell r4+5; proximal arm extended to vein R4+5, sometimes faintly in anterior half of cell r4+5, separated from S-band; extended basally along posterior wing margin almost to vein A1+Cu2 but not connected to extension from base of S-band.

Wing.

Abdomen: Mostly orange; posterior margins of tergites narrowly yellow, this area narrower laterally and also on successive tergites, nearly absent on tergite 5 and female tergite 6.

Male terminalia: Dorsal posterior margin of epandrium with narrow, V-shaped, medial indentation. Lateral surstylus moderately long, slightly divergent from midline distally; basally with narrow, posteriorly projecting ridge bordering medial surstylus; in lateral view slightly posteriorly curved, extreme apex with small but strong posterior projection; in posterior view without strong basolateral lobe, main part somewhat triangular, with rounded subapical lateral lobe. Proctiger with lateral fold separating sclerotized areas. Phallus 4.45 mm long; 1.53 times as long as mesonotum. Glans 0.50 mm long; acrophallus relatively stout.

Epandrium and surstyli, lateral and posterior.

Female terminalia: Oviscape 3.20-3.79 mm long, 0.97-1.09 times as long as mesonotum. Eversible membrane with 70-80 large, hook-like dorsobasal scales in triangular pattern. Aculeus 3.12-3.62 mm long; tip 0.35-0.40 mm long, 0.18-0.20 mm wide, nonserrate, broadly triangular and blunt apically. Spermathecae ovoid to pear-shaped.

Aculeus tip, ventral.