| # Anastrepha and Toxotrypana: descriptions, illustrations, and interactive keys |

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

### Anastrepha megacantha Zucchi

Body. Setae red brown, or dark red brown, or dark brown to black (dark brown in holotype).

Thorax. Mesonotum length 4–5 mm (4.5, n=1, Zucchi 1984). Basal scutellar seta "marrom-escuras", Zucchi 1984. Mesonotum yellow, or orange. Scutum mesonotal stripes indistinct in holotype, Zucchi 1984; without brown vittae. Subscutellum entirely yellow to orange. Mediotergite entirely yellow to orange.

Wings. Wing length 8.5–10.5 mm (9.5, n=1, Zucchi 1984). 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 (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. 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. 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. Apex of V-band not extended from vein R4+5 to vein M, hyaline area present between band and vein M. Vein R2+3 strongly sinuous; without accessory vein. Vein R4+5 distal to crossvein r-m more or less evenly curved or not strongly bowed medially. Crossvein dm-cu orientation with anterior end more distal than posterior end.

Abdomen. Oviscape length 9–11 mm (10.0, n=1, Zucchi 1984); ratio (oviscape length/mesonotum length) 2–2.45 (2.22, n=1, Zucchi 1984). Eversible membrane with dorsobasal denticles all sclerotized, in triangular to semicircular pattern, but one medial denticle much larger than others. Eversible membrane with 20–40 denticles ((~30 in Zucchi 1984, fig. 2 of holotype) smaller hooklike dorsobasal denticles, no more than half as long as medial denticle, in suboval pattern). Aculeus tip width aculeus tip missing in holotype, Zucchi 1984.

Miscellaneous. Data source: Zucchi 1984. Sex of recorded specimens: female. Species group: mucronota group.

Biology and economic significance. This species is not considered economically important. Refer to the 'Tephritidae Databases' in the USDA Compendium of Fruit Fly Host Information (https://coffhi.cphst.org/) for host plant information.

Illustrations. • Wing (Zucchi 1984, fig. 1). • Terminalia, female.

We advise against extracting comparative information from the descriptions. This is much more easily achieved using the DELTA data files or the interactive key, which allows access to the character list, illustrations, full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa. See also Guidelines for using data taken from Web publications.

Cite this publication as: ‘Norrbom, A.L., Korytkowski, C.A., Zucchi, R.A., Uramoto, K., Venable, G.L., McCormick, J., and Dallwitz, M.J. 2012 onwards. Anastrepha and Toxotrypana: descriptions, illustrations, and interactive keys. Version: 21st November 2023. delta-intkey.com’.

Contents