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Anastrepha and Toxotrypana:
descriptions, illustrations, and interactive keys

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Allen L. Norrbom, Cheslavo A. Korytkowski, Roberto A. Zucchi, Keiko Uramoto, George L. Venable, Jerrett McCormick and Michael J. Dallwitz

Anastrepha mucronota Stone

Morphology

Body. Setae dark brown to black.

Head. Frons without brown markings except ocellar tubercle. Occiput without brown marks. Frontal setae 2–4 (usually 3). Orbital setae 2. Ocellar seta weak, small or absent. Gena without brown spot. Facial carina in profile concave or flat on dorsal 2/3. Face with ventral part gradually tapered laterally; without brown markings. Antenna not extended to ventral margin of face. Arista of male without preapical expansion. Palpus in lateral view evenly setulose.

Thorax. Mesonotum length 3.1–4 mm (3.24–3.88, n=24). Postpronotal lobe and notopleuron entirely microtrichose (notopleuron sometimes with bare area anterior and dorsal to posterior seta). Scutum nonmicrotrichose. Scutellum disc entirely microtrichose. Postpronotal, presutural supra-alar, dorsocentral, intra-alar and scutellar setae well developed, subequal to or longer than scutellum length; postpronotal seta on posterior half of postpronotal lobe. Acrostichal seta well developed. Basal scutellar seta strong, longer than scutellum. Mesonotum yellow, or orange. Scutum with 3 (both medial and sublateral) pale postsutural vittae; pale medial vitta ? pattern faint; pale sublateral postsutural vitta extended posteriorly to intra-alar seta. Scutum posteriorly without brown or orange brown markings. Scutum without brown vittae. Scutellum entirely yellow or with dark markings only on extreme base of disk. Mesopleuron mostly yellow to orange, without brown markings. Subscutellum entirely yellow to orange. Mediotergite entirely yellow to orange. Femora entirely yellow to orange. Fore femur with posterodorsal and ventral rows of well developed setae.

Wings. Wing length 7.3–8.5 mm (7.9, Stone 1942). Wing pattern typical Anastrepha pattern (S-band complete or at most interrupted at crossvein r-m, C-band and at least proximal arm of V-band present). C-band broadly extending to vein M in cell br along cell bm; covering base of cell r2+3; yellow or orange area posterior to pterostigma filling all of band in cells r1 and r2+3, or broad, extending distally into cells r1 and r2+3 at least to level of midlength of pterostigma. C-band and S-band separated (by hyaline band from cell bm to costal margin in cell r1). S-band extended anteriorly to vein R4+5 and covering all of crossvein r-m. Cell bm entirely hyaline or infuscated only along subapical fold. S-band posterior margin without incision in cell cu1. S-band base without extension in middle of cell cu1 to posterior wing margin; without extension in cell a1 to or almost to posterior margin. S-band middle section predominantly or entirely orange, often with brown margins. Subapical hyaline area in radial cells distal to r-m extending anteriorly to vein R2+3. S-band distal section without marginal hyaline band or spots in cell r2+3 or near apices of R2+3 or R4+5. S-band distally not extended to apex of vein M. V-band proximal arm as dark as apical half of S-band; extending more than 1/3 distance from apex of vein Cu1 to apex of vein A1+Cu2; not connected anteriorly to S-band; not connected to S-band in cell dm. V-band distal arm complete; connected to proximal arm of V band. Area surrounding apex of lobe of cell bcu with microtrichia similar in density to area anterdistal to it along vein Cu1. Vein R2+3 slightly sinuous; without accessory vein. Cell bcu posteroapical lobe shorter than vein A1+Cu2. Costa in male with setulae on anterior margin between crossvein h and apex of vein R1 similar to other setulae. Crossvein dm-cu orientation with anterior end more distal than posterior end.

Abdomen. Abdomen ovate or parallel-sided, syntergite 1+2 gradually broadening or parallel-sided. Abdominal tergite without brown markings. Lateral surstylus in posterior view without basolateral lobe. Lateral surstylus in posterior view similar in shape to nolazcoae but narrower, strongly tapered to apicolateral lobe, and lateral margin produced. Lateral surstylus in posterior view not boot-shaped. Surstylus in posterior view with lateral margin convex. Surstylus in posterior view with mesal margin concave. Phallus length 5–6.67 mm (5.4–6.3, n=4); ratio (phallus length/mesonotum length) 1.33–1.85 (1.44–1.75, n=4). Glans present; without spinules. Proctiger lateral and ventral sclerotized areas connected, lateral areas separate dorsally. Oviscape entirely yellow to orange brown; straight; length 3.6–5.5 mm (3.66–5.40, n=19); length ratio (oviscape length/mesonotum length) 1–1.45 (1.06–1.40, n=19); spiracle ratio (distance from base to spiracle/oviscape length) 0.21–0.28 (0.22–0.265, n=10). Eversible membrane with dorsobasal denticles all sclerotized, in continuous triangular to semicircular or suboval pattern. Aculeus length 3.33–5.2 mm (3.49–4.83, n=9). Aculeus length/oviscape length 0.92–1.03 (0.95–1.00, n=8). Aculeus in ventral view more or less parallel-sided except extreme base. Aculeus in lateral view straight or ventrally curved. Aculeus tip length/aculeus length 0.06–0.08 (0.062–0.077, n=9). Aculeus tip length 0.25–0.35 mm (0.27–0.33, n=14); width 0.1–0.13 mm (n=13); length/width in ventral view 2–3.15 (2.15–3.00, n=13); depth (width in lateral view)/width (in ventral view) 0.06–0.08 (0.065–0.073, n=4); lateral margins not curved dorsally; blunt, or gradually tapering, blade-like, with flattened cross-section, or triangular; not flared outward at or proximal to base; without ridges or lobes; without elongate dorsolateral depressions apically; not serrate; serrated part 0 times length of tip. Spermathecae sclerotized; ovoid.

Miscellaneous

Sex of recorded specimens: male and female. Species group: mucronota group.

Biology and economic significance

This species is a pest of zapote (Matisia cordata Bonpl.), a fruit cultivated in the Andean countries. Refer to the Fruit Fly Databases for host plant information.

Illustrations

• Wing. • Terminalia, female. • Terminalia, male.

Links

Fruit Fly Databases for host plant, distribution, and nomenclatural information. Google search.