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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 undosa Stone

Morphology

Body. Setae red brown, or dark red brown.

Head. Frons without brown markings except ocellar tubercle. Occiput without brown marks. Frontal setae 3–4. 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.

Thorax. Mesonotum length 3.4–4.7 mm (3.50–4.21, n=4; 4.5, Stone 1942a). Postpronotal lobe and notopleuron entirely microtrichose. Scutum mostly or entirely microtrichose. 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, or on anterior 2/5 of postpronotal lobe (near midlength). Acrostichal seta well developed. Basal scutellar seta strong, longer than scutellum. Mesonotum yellow, or orange, or dark orange. Scutum pale thoracic markings poorly differentiated in examined specimens. Scutum posteriorly with only single medial brown spot on scuto-scutellar suture, or with brown or orange brown band or other transverse marking or larger posteromedial mark. Scutum posteriorly with dark band or broad marking on posterior margin, or with large U-shaped mark including posterior band and vittae; scutal posterior brown band not extended laterally to include intra-alar seta; with 2–3 pairs of brown vittae (vittae usually red brown, 1 pair between acrostichal and dorsocentral lines extending posteriorly midway between transverse suture and posterior margin, 1 postsutural pair between dorsocentral and intra-alar lines, frequently connected with band on posterior margin to form U-shaped mark). Submedial scutal vittae separated from posteromedial brown mark. Dark brown scutal setulae between brown dorsocentral vitta and yellow sublateral vitta continuous, evenly distributed, without large non-setulose areas. Scutellum brown on side, markings not connected apically (diffusely brown between basal and apical setae, marking extended slightly onto disc). Mesopleuron mostly yellow to orange, without brown markings. Subscutellum yellow to red brown medially, dark brown laterally. Mediotergite yellow to red brown medially, dark brown laterally. Femora entirely yellow to orange. Fore femur with posterodorsal and ventral rows of well developed setae.

Wings. Wing length 8–11.5 mm (8.22–9.87, n=4; 10.5, Stone 1942a). 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 broad, extending distally into cells r1 and r2+3 at least to level of midlength of pterostigma. C-band and S-band separated (broadly 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, or with weak 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 into cell r1, or 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; connected anteriorly to S-band along vein R4+5 or in cell r2+3 (broadly connected); not connected to S-band in cell dm. V-band distal arm complete; connected to proximal arm of V band. Apex of V-band not extended from vein R4+5 to vein M, hyaline area present between band and vein M. S-band distal section width ratio (width of S-band/width of cell r2+3, both measured perpendicular to costal margin at apex of vein R2+3) 0.45–0.65 (0.52–0.56, n=3). Area surrounding apex of lobe of cell bcu with microtrichia similar in density to area anterdistal to it along vein Cu1. Area between S-band and V-band entirely microtrichose in cells dm and cu1. Cell c: pterostigma ratio (cell c length/pterostigma length) 0.75–0.95 (0.81–0.85, n=3). Pterostigma ratio 5.40–5.90, n=3. Vein R1 ratio (distance from wing base to apex of R1/wing length) 0.63–0.69 (0.65–0.67, n=3). Vein R2+3 strongly sinuous; without accessory vein, or with anteriorly-directed accessory vein. Vein R4+5 distal to crossvein r-m more or less evenly curved or not strongly bowed medially. Vein M ratio (distance from bm-cu to r-m/distance from bm-cu to dm-cu) 0.66–0.7 (0.67–0.69, n=3). Vein M curvature ratio (width of cell r4+5 at apex/width at level of dm-cu) 0.75–0.95 (0.82–0.89, n=3). Cell bcu ratio (length/anterior margin length along vein Cu) 1.7–1.95 (1.78–1.87, n=3). Cell bcu posteroapical lobe longer 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. Phallus length 5–5.8 mm (5.4, n=1); ratio (phallus length/mesonotum length) 1.25–1.55 (1.40, n=1). Glans present. Oviscape entirely yellow to orange brown; straight; length 4–4.9 mm (4.20–4.73, n=3); length ratio (oviscape length/mesonotum length) 1–1.25 (1.12–1.16, n=2); spiracle ratio (distance from base to spiracle/oviscape length) 0.26–0.32 (0.29, n=3); spiracle ratio to mesonotum length (distance from base to spiracle/mesonotum length) 0.3–0.35 (0.32–0.33, n=2). Eversible membrane with dorsobasal denticles all sclerotized, in continuous triangular to semicircular or suboval pattern. Eversible membrane with 75–100 denticles ((80–95 in 2 examined specimens) hooklike dorsobasal denticles in 6–8 irregular rows in subtriangular to suboval pattern, on distal half long and slender, on basal half medium sized and stouter, rather abruptly demarcated). Eversible membrane, subbasally on ventral side without cluster of hairs. Aculeus length 3.9–4.75 mm (4.0–4.12, n=2; 4.25, Stone 1942a). Aculeus length/oviscape length 0.89–0.98, n=2. Aculeus in lateral view straight or ventrally curved. Aculeus tip length/aculeus length 0.06–0.09 (0.07–0.075, n=2). Aculeus tip length 0.27–0.32 mm (0.29–0.30, n=4); width 0.09–0.12 mm (0.105–0.110, n=3); length/width in ventral view 2.73–2.86, n=3; depth (width in lateral view)/width (in ventral view) 0.81, n=1; lateral margins not curved dorsally; 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.

Miscellaneous

Data source: Stone 1942. Sex of recorded specimens: male and female. Species group: mucronota group.

Biology and economic significance

This species is not considered economically important. Refer to the Fruit Fly Databases for host plant information.

Illustrations

• Thorax (dorsal). • Wing. • Terminalia, female. • Terminalia, male.

Links

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