The Diptera Site header graphic 
Anastrepha Main | Tephritidae Main | Diptera Home | SEL Home


Anastrepha pulchra Stone

Recognition
Anastrepha pulchra is one of three species of the serpentina group with the C- and S-bands broadly fused so that there is no hyaline area in the middle of cell br. It differs from the other two species, A. pulchella Norrbom and A. anomoiae Norrbom, in having a triangular brown mark on the orbital plate, and narrower, more elongate, yellow medial areas on the posterior margins of abdominal tergites 3 and 4, and in the male, cells bm and dm entirely infuscated. The aculeus tip is 0.33-0.46 long (shorter than in A. anomoiae, longer than in A. pulchella), and entirely nonserrate. The marginal hyaline spot in cell r1 is elongated along the costa, and its apex is aligned with or distal to crossvein R-M; it is aligned with R-M in A. anomoiae and proximal to it in A. pulchella. See Recognition for A. pulchella and A. anomoiae for additional differences.

Description
Body largely dark orange to dark red-brown with yellow markings. Setae dark brown.

Head: Mostly yellow. Ocellar tubercle and paired triangular area on orbital plate brown. Occiput with paired, triangular or comma-shaped, brown mark covering suture of median occipital sclerite. Facial carina, in profile, concave. 3-5 frontal setae; 1-2 orbital setae, posterior seta well developed if present. Ocellar seta weak, small to minute. Antenna extended 0.75-0.85 distance to lower facial margin.

Anastrepha pulchra, female, dorsal habitus, drawing (60593 bytes)
Dorsal habitus, female.

Thorax: Mostly orangebrown to red-brown with following areas yellow and distinctly 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 only to or slightly beyond level of acrostichal seta (at most one fourth distance to level of dorsocentral seta); sublateral vitta extended from transverse suture almost to posterior margin, including intra-alar seta; scutellum except extreme base (brown area well separated from basal seta); dorsal margin of anepisternum; dorsal half to all of greater ampulla; dorsal margin of katepisternum; katepimeron; and most of anatergite and katatergite. Mesonotal darker areas mostly red brown to dark brown, sometimes with narrow area bordering medial vitta, shorter narrow area bordering mesal margin of sublateral vitta, or small sublateral presutural area orange; without orange vitta on dorsocentral line. Most of darker areas of anepisternum, anepimeron, meron, and katatergite dark brown. Katepisternum mostly orange or partly brown. Subscutellum and mediotergite dark brown, usually narrowly orange medially. Mesonotum 3.04-4.08 mm long. Scutum microtrichose except for broad medial anterior area extended 1/3-2/3 distance to transverse suture; setulae mostly brown, but yellow on vittae and in broad band across middle of presutural area. Katepisternal seta weak, at most as long as postocellar seta, yellowish.

Wing: Length 6.17-8.89 mm. Vein M strongly curved apically; section between BM-Cu and R-M usually 3.05-3.64 times as long as section between R-M and DM-Cu, 4.18-4.75 in 2 Venezuelan males; section between R-M and DM-Cu usually 0.58-0.71 times as long as DM-Cu, 0.48-0.51 in 2 Venezuelan males. Crossvein DM-Cu slightly to distinctly oblique, with anterior end more distal than posterior end. Pattern mostly dark brown. Basally with large infuscated area formed by fusion of C-band and base of S-band, which are separated in female only by hyaline to yellowish area covering most of cell bm and basal eighth or less of cell dm, in male cells bm and dm entirely infuscated although cell bm sometimes paler anteriorly; basal area mostly brown, but cell bc, cell c except anterior margin, and much of basal part of cell bcu yellow to subhyaline in female, these areas darker or smaller in male; often much of pterostigma, sometimes small area in cells sc and r1 posterior to bend in vein Sc also yellow or paler brown; cell r2+3 basal to level of apex of vein R1 and all of cell br brown. Remainder of S-band brown except sometimes partially orange in cell r1 bordering costa; distal section slender, at apex of vein R2+3 0.26-0.38 times width of cell r2+3; closely following vein R2+3 so that basal marginal hyaline spot in cell r1 elongate along costa; not extended to apex of vein M. Hyaline marginal spot in cell r1 extended to vein R4+5; its apex aligned with R-M or slightly distal to it. V-band with distal arm absent; proximal arm slender, often extended to vein R4+5 but usually fainter or absent in anterior half to 2/3 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.

Anastrepha pulchra, wing, photo (64927 bytes) Anastrepha pulchra, wing, photo (59927 bytes)
Wings.

Abdomen: Predominantly brown with yellow and orange areas sometimes almost forming T-shaped pattern, especially in male. Syntergite 1+2 mostly brown, with broad medial area and posterior margin broadly yellow; tergites 3 and 4 each with brown band distinctly narrower medially, sometimes interrupted on tergite 4; posterior margin with more elongate, narrower (less than half width of tergite), often trapezoidal yellow area. Tergite 5 brown laterally, yellow to orange medially. Female tergite 6 orange.

Male terminalia: Dorsal posterior margin of epandrium evenly convex. Lateral surstylus moderately long; in lateral view very slightly curved; in posterior view without strong basolateral lobe, main part narrowly triangular, acute apically. Proctiger with lateral fold separating sclerotized areas. Phallus 5.45-6.24 mm long; 1.77-1.90 times as long as mesonotum. Glans 0.55-0.60 mm long; acrophallus relatively stout.

Anastrepha pulchra, epandrium and surstyli, drawing (62537 bytes)
Aculeus tip, ventral.

Female terminalia: Oviscape 4.28-5.74 mm long, 1.25-1.41 times as long as mesonotum. Eversible membrane with 35-55 large, hook-like dorsobasal scales in triangular pattern. Aculeus 4.00-5.70 mm long; base expanded; tip 0.33-0.46 mm long, 0.14-0.16 mm wide, nonserrate, tapered rapidly subbasally (slightly less so in Venezuela female examined), then gradually to broad, blunt apex. Spermathecae pear shaped.

Anastrepha pulchra, aculeus tip, ventral, drawing (25515 bytes)
Aculeus tip, ventral.

Top of Page

Content by Allen L. Norrbom. Last Updated: February 4, 2003.