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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 ornata Aldrich

Morphology

Body. Setae dark brown to black.

Head. Frons without brown markings except ocellar tubercle, or with small brown marks bordering orbital plate laterally and mesally (often (latter usually connected posteriorly to brown area on ocellar tubercle)), or with brown band or mark including ocellar tubercle and extending to eye margin (rarely (if so, narrowest lateral to ocellar tubercle)). Occiput with brown marks only on lateral sclerite, or with pair of brown marks on medial and lateral sclerites (with brown spot ventral to lateral vertical seta, occasionally extending slightly onto medial sclerite). 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 2.7–3.6 mm (2.75–3.45). Scutum microtrichose except paired elongate bare areas (with broad paired nonmicrotrichose vitta between dorsocentral and intra-alar lines, also largely bare anterior to transverse suture except margins and on and between orange submedial areas). Postpronotal, presutural supra-alar, dorsocentral, intra-alar and scutellar setae well developed, subequal to or longer than scutellum length. Acrostichal seta well developed. Basal scutellar seta strong, longer than scutellum. Katepisternal seta moderately developed, larger than postocellar seta, but much smaller and weaker than anepimeral seta, or weak, no larger than postocellar seta. Mesonotum orange brown, or dark brown. Scutum presutural dorsocentral pale vitta absent; with 3 (both medial and sublateral) pale postsutural vittae; pale medial vitta with posterior end ovoid; pale sublateral postsutural vitta extended posteriorly to intra-alar seta. Scutum posteriorly without brown or orange brown markings (scutum predominantly brown). Scutum without brown vittae. Scutellum entirely yellow or with dark markings only on extreme base of disk (rarely), or with base of disk brown, extending to or beyond level of basal seta. Propleuron yellow to orange, much paler than darker area on anepisternum. Mesopleuron mostly dark orange to brown. Subscutellum entirely brown to dark brown, or yellow to red brown medially, dark brown laterally. Mediotergite entirely brown to dark brown, or 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 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). Cell c mostly or entirely infuscated to subhyaline, or paler posteriorly, without distinct subapical hyaline area. 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 (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 with distinct incision in cell cu1. S-band base without extension in middle of cell cu1 to posterior wing margin (although with extension to margin along vein A1+Cu2); without extension in cell a1 to or almost to posterior margin. S-band middle section entirely brown. 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 extended to apex of vein M (usually), or not extended to apex of vein M. V-band proximal arm as dark as apical half of S-band; connected to extension of base of S-band along vein A1+Cu2; not connected anteriorly to S-band. V-band distal arm absent. 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) 0.5–1 (0.53–1.0). Pterostigma ratio 3–3.8. Ratio of costa length between apices of Sc and R1/length between apices of R1 and R2+3 0.52–0.57. Vein R2+3 not sinuous; without 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) 0.63–0.73 (0.64–0.72). 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 with brown markings. Abdominal tergites at least with syntergite 1+2 with dark brown band. Epandrium posterodorsal margin evenly rounded. Lateral surstylus in posterior view without basolateral lobe. Lateral surstylus in posterior view long, somewhat paddle-shaped, broad and truncate apically. Lateral surstylus in posterior view not boot-shaped. Phallus length 3.7–4.4 mm (3.75–4.37); ratio (phallus length/mesonotum length) 1.2–1.5 (1.29–1.40). Glans present; without spinules. Proctiger lateral and ventral sclerotized areas separate, lateral areas separate dorsally. Oviscape straight; length 3–3.95 mm; length ratio (oviscape length/mesonotum length) 1–1.2 (1.03–1.19). Eversible membrane with dorsobasal denticles all sclerotized, in continuous triangular to semicircular or suboval pattern. Eversible membrane with 55–65 denticles (large hooklike dorsobasal denticles in triangular pattern). Aculeus length 3.1–3.75 mm. Aculeus in ventral view more or less parallel-sided except extreme base. Aculeus tip length 0.29–0.43 mm (0.31–0.4); width 0.16–0.18 mm; lateral margins not curved dorsally; blunt, or gradually tapering, blade-like, with flattened cross-section; not flared outward at or proximal to base; without ridges or lobes; not serrate; serrated part 0 times length of tip. Spermathecae sclerotized; ovoid.

Miscellaneous

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

Biology and economic significance

This species is an occasional pest of various Myrtaceae and Rosaceae, especially guava, in the Andean countries. Reported hosts include: Myrtaceae - Acca sellowiana (O. Berg) Burret, Psidium guajava L., Syzygium jambos (L.) Alston; Rosaceae - Prunus persica (L.) Batsch and Pyrus communis L. Of these, only P. guajava is a native host. Pouteria lucuma (Ruiz & Pav.) Kuntze (Sapotaceae) was reported as a host by Tigrero (1998), but the record he cited from Aldrich (1925) was clearly based on a specimen that was collected on the plant and not reared. Refer to the Fruit Fly Databases for host plant information.

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Illustrations

• Habitus, female (dorsal). • Habitus, male (dorsal). • Wing. • Terminalia, male & female.

Links

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