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Anastrepha schausi Aldrich

Recognition
Anastrepha schausi belongs to the schausi species group, which differs from other species of Anastrepha in having minute spines on the glans of the male, the facial carina weak, the lateral surstylus acute, its lateral margin usually slightly concave, and the male face and/or abdomen with white or brown markings. Anastrepha schausi differs from all other species of Anastrepha except A. fernandezi and A. hermosa by the shape of the face, particularly its angulate lower margin. It differs from both of these species in lacking brown and white male abdominal markings and in having a brown band on the male face and the facial ridge in addition to white areas on the facial ridge. Anastrepha schausi further differs from A. hermosa in having broader nonmicrotrichose stripes on the scutum, and from A. fernandezi in having the V-band of the wing complete. The female (so far unknown) probably has the face similarly shaped as the male, or at least with the carina weak. Estimating from the length of the phallus, the female oviscape is probably about 4.2 mm long. Anastrepha scobinae Stone, hastata Stone, and tubifera (Walker), which are known only from females, have wing patterns similar to A. schausi and terminalia of corresponding length, but they all have well developed facial carinae and are doubtfully conspecific. A. tubifera also has vein M much more strongly curved apically, and it and A. hastata also have the scutum entirely microtrichose.

Description
Mostly yellow brown to orange; setae blackish; setulae orange.

Anastrepha schausi male head, drawing

Head: Orange except ocellar tubercle and in male facial ridge and lower margin of face with narrow dark brown band; male facial ridge also with white above brown band; face microtrichose, short, but not expanded laterally, carina weak; facial ridge extremely broad, almost reaching lateral margin of head; gena narrow, height 0.14 longest diameter of eye; posterior orbital seta well developed; ocellar seta weak; first flagellomere dark brown apically, moderately long but nearly reaching lower facial margin, length 0.86 height of face.

Thorax: Mesonotum 3.71 mm long; scutum without microtrichia except along transverse suture, narrow medial stripe, expanding just anterior to dorsocentral seta to cover posterior margin, and lateral to supra-alar seta; scutum mostly orange, with pale white postsutural lateral vittae; scutellum microtrichose; katepisternal setae strong, almost as long as outer vertical seta; subscutellum and mediotergite entirely orange; pleural color pattern indistinct.

Wing: Length 8.96 mm. With typical Anastrepha pattern, bands moderate brown, not connected; V-band complete; M weakly curved apically, well separated from apex of S-band.

Male abdomen: Tergites concolorous light brown, with median stripe of dense microtrichia, producing silvery appearance at certain angles. Terminalia with outer surstylus moderately long, flat, acute, with outer and inner margins slightly concave; phallus 5.92 mm long, 1.59 times as long as mesonotum; glans 0.60 mm long, with numerous minute apical spines, acrophallus expanded and involuted apically; proctiger uncreased laterally, weakly sclerotized.

Female: Unknown.


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Content by Allen L. Norrbom. Last Updated: February 9, 2002.