Anastrepha grandis (Diptera: Tephritidae) description

Recognition
The adults of A. grandis differ from all other Anastrepha species by the narrow, dark brown dorsocentral vittae on the scutum. The female is further distinguished by the stiletto-like shape of the aculeus tip, which has 2 V-shaped ridges, one dorsally and one ventrally. Anastrepha grandis also differs from most other Anastrepha species in having a complete S-band that is broadly fused to the C-band along the costa, so that there is no hyaline area in cell r₁ distal to the apex of vein R₁. It differs from the other species with this type of wing pattern except A. shannoni in having cell r₂₊₃ entirely infuscated, and from A. shannoni in having a hyaline area in cell br, the abdomen without redbrown lateral areas, and in terminalia length (Norrbom 1991).

The third stage larva differs from those of all other Anastrepha species described to date by the number of tubules of the anterior spiracle, 28-37 in A. grandis, no more than 23 in the other species (Steck & Wharton 1988, Steck et al. 1990).

Adult: Mostly orange to redbrown. Setae usually moderate red brown. Head: Concolorous except dark brown ocellar tubercle; 3-5 frontal setae; 1-2 orbital setae, posterior seta often weak or absent. Antenna extends 0.60-0.72 distance to lower facial margin.
Dorsal habitus. Click here for details.	Thorax: Mesonotum 2.88-4.22 mm long. Scutum entirely microtrichose; mostly orange to redbrown; single distinct yellowish medial stripe from anterior margin to slightly posterior to acrostichal seta, moderately expanded posteriorly, extending laterally beyond acrostichal seta but not reaching dorsocentral seta; no narrow yellowish stripe in line with dorsocentral seta, but dark brown, sometimes poorly differentiated stripe slightly lateral to dorsocentral seta; distinct yellowish sublateral stripe from transverse suture to posterior margin, including base of intra-alar seta; scuto-scutellar suture usually with irregular medial dark brown spot. Subscutellum and mediotergite orange brown, broadly dark brown to black laterally. Pleura with typical dark areas weakly differentiated except anepimeron usually with dark brown spot. Katepisternal seta undifferentiated or weak, yellowish, no longer than postocellar seta.
	Wing. Click here for details.
Wing: Length 7.95-10.30 mm. Vein R₂₊₃ almost straight. Vein M moderately curved apically; section between BM-Cu and R-M 2.18-2.69 times as long as section between R-M and DM-Cu. Pattern faint yellow brown to orange brown, its margins often diffuse. Cell r₂₊₃ entirely infuscated. Cell br with large hyaline area apical to BM-Cu, extending more than half-way to R-M. Cell dm with large basal hyaline area. Cell bm hyaline. Proximal arm of V-band ending at M or extending anteriorly, often faintly, to R₄₊₅ to fuse with S-band.
Abdomen: Tergites unicolorous yellowish to orange.
Male terminalia. Click here for details.
Male terminalia: Lateral surstylus broad basally, tapering apically to short blunt lobe; moderately long, section apical to apex of medial surstylus 0.95-1.33 times as long as basal section; posterior side distinctly concave. Proctiger with distinct lateral fold; sclerotized part narrowly divided into 3 sections or only weakly connected. Phallus 6.70-7.40 mm long; 1.70-2.33 times as long as mesonotum. Glans 0.55-0.68 mm long, relatively stout; acrophallus strong, stout and distinctly convoluted apically.
	Eversible membrane dorsobasal scales and aculeus tip, vental and lateral views. Click here for details.
Female terminalia: Oviscape 4.99-6.28 mm long; 1.40-1.59 times as long as mesonotum. Eversible membrane with dorsobasal scales in broad subtriangular pattern; 14-16 large hooklike scales in broadest row; largest scales 0.30 mm long. Aculeus 5.27-6.18 mm long, often as long or longer than oviscape; tip 0.58-0.66 mm long, 0.16-0.18 mm wide, non-serrate, sides slightly convex, ventral surface with V-shaped ridge subbasally, dorsal surface with V-shaped ridge at midlength. Spermathecae ovoid to elongate ovoid (Norrbom 1991).
Immature stages: The larvae and egg were described by Steck & Wharton (1988). Click here for a copy of their description.