Anastrepha inaequalis Norrbom & Korytkowski, 2012, new species
Creators: name: Norrbom, Allen L.
name: Korytkowski, Cheslavo A.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tephritidae
Anastrepha
Anastrepha inaequalis

description: Anastrepha inaequalis, new species
Figs. 24, 25, 47, 68, 83, 97, 98
Diagnosis. Anastrepha inaequalis differs from most other species of Anastrepha by its pattern of dorsobasal denticles on the eversible membrane, with one medial denticle much larger than the others. In this regard it is similar to other species of the megacantha clade, but differs as indicated in the key.
In the key of Steyskal (1977) it runs with difficulty to A. parallela (Wiedemann) or A. kuhlmanni Lima. It differs from both species in having paler setae, the large medial denticle on the eversible membrane, and the much shorter aculeus tip (0.08 mm long vs. 0.16 mm in A. kuhlmanni and 0.25–0.33 mm in A. parallela) with uneven margins (lateral margin evenly tapering in the other two species).
Description. Mostly yellow to orange. Setae orange to dark orange.
Head: Yellow to orange except brown ocellar tubercle. 3 frontal setae; 2 orbital setae, posterior seta well developed. Ocellar seta weak, slightly longer than ocellar tubercle. Facial carina, in profile, slightly concave on dorsal two-thirds. Antenna not extended to ventral facial margin. Palpus in lateral view dorsally curved, evenly setulose.
Thorax: Mostly yellow to orange, with typical white areas poorly differentiated in holotype except dorsal margin of anepisternum. Subscutellum and mediotergite entirely orange. Mesonotum 3.63 mm long. Postpronotal lobe and scutellum entirely microtrichose; microtrichia of scutum, which is concave due to pin, not observable. Scutal setulae orange. Chaetotaxy typical for genus. Katepisternal seta weak, approximately half as long as anepisternal seta, but much weaker, orange.
Legs: Entirely yellow to orange.
Wing (Fig. 47): Length 8.08 mm, width 3.24 mm, ratio 2.49. Apex of vein R1 at 0.57 wing length, slightly proximal to level of anterior end of crossvein r–m. Cell c 1.32 times as long as pterostigma; pterostigma 5.91 times as long as wide. Vein R2+3 strongly sinuous. Crossvein r–m at 0.66 distance from bm–cu to dm–cu on vein M. Vein M strongly curved apically; cell r4+5 0.92 times as wide at apex as at level of dm–cu. Cell bcu with distal lobe moderately long, length of bcu 1.61 times as long as anterior margin, lobe 0.72 times as long as vein A1+Cu2. Wing pattern mostly orange and moderate brown. C-band mostly orange, paler in cell c, darker orange brown in pterostigma and with brownish streak in cell br. C-band and S-band broadly separated along veins R2+3 and R4+5 by hyaline band that extends from cell bm to costa, slightly narrowed along vein R2+3. Basal hyaline area in cell dm medium sized. Basal half of S-band mostly orange, posterodistal margin brown, very broadly in cell cu1, without incision in cell cu1, proximal margin narrowly brown in radial cells; distal section orange and moderate brown, medium width, at apex of vein R2+3 0.58 times width of cell r2+3, not extended to apex of vein M; hyaline area proximal to apex of band extending to vein R2+3. V-band complete, brown except proximal arm orange bordering most of dm-cu and in cell r4+5 except proximal margin and anterior proximal margin of distal arm, proximal arm separated from S-band, on posterior margin extended half distance to vein A1+Cu2; distal arm connected to proximal arm; cell r4+5 with small diffuse hyaline area between V-band and vein M.
Abdomen: Mostly orange, without brown markings. Setulae orange brown.
Female terminalia: Oviscape 4.91 mm long, 1.35 times as long as mesonotum, straight in lateral view; spiracle at basal 0.25. Eversible membrane (Fig. 68; lost in holotype after dissection) similar to A. macracantha, with 1 very large medial hooklike denticle and numerous small hooklike dorsobasal denticles, less than half as long as medial denticle, in suboval pattern. Aculeus (Fig. 83) slightly ventrally curved in lateral view, 4.60 mm long, 0.94 times as long as oviscape, in ventral view base strongly expanded, 0.15 mm wide; shaft rapidly tapered, 0.045 mm wide at midlength; tip (Figs. 97–98) 0.08 mm long, 0.02 times aculeus length, 0.04 mm wide, 2.0 times as long as wide, slightly tapered then slightly expanded subapically, nonserrate but with large notch on distal 0.30, 0.02 mm wide in lateral view, 0.50 times ventral width. Spermathecae elongate ovoid.
Distribution. Anastrepha inaequalis is known only from Trinidad.
Biology. The host plants and other aspects of the biology of this species are unknown.
Type data. Holotype Ƥ (AMNH USNMENT 00104564), Trinidad: Arima Valley, 19 Apr 1950, W. Beebe.
Etymology. This name is an adjective, from the Latin “in”, meaning not, and “aequalis”, meaning equal, in reference to the difference in size between the single larger medial hooklike denticle versus the other dorsobasal denticles on the eversible membrane.
description: Published as part of Norrbom, Allen L. & Korytkowski, Cheslavo A., 2012, New species of Anastrepha (Diptera: Tephritidae), with a key for the species of the megacantha clade, pp. 510-552 in Zootaxa 3478 on page 529, DOI: 10.5281/zenodo.282325