Anastrepha macracantha Norrbom & Korytkowski, 2012, new species

Anastrepha macracantha, new species

Figs. 11, 48, 49, 69, 70, 84, 99

Diagnosis. Anastrepha macracantha 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 the large medial denticle on the eversible membrane and its much shorter aculeus tip (0.06–0.07 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 dark red brown.

Head: Yellow to orange except brown ocellar tubercle. 3–4 frontal setae; 2 orbital setae, posterior seta well developed. Ocellar seta weak, at most 1.5 times as long as ocellar tubercle. Facial carina, in profile, straight or 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 following areas white (poorly differentiated in type specimens): postpronotal lobe and lateral margin of scutum bordering it; sublateral scutal vitta from transverse suture to posterior margin, including base of intra-alar seta; entire scutellum; dorsal margins of anepisternum and katepisternum; katepimeron; and most of anatergite and katatergite. Medial scutal vitta not apparent, probably absent. Subscutellum and mediotergite entirely orange. Mesonotum 3.91–4.32 mm long. Postpronotal lobe, notopleuron, and scutellum entirely microtrichose; scutum mostly nonmicrotrichose except bordering transverse suture, laterally and posteriorly; scutal setulae yellow to orange. Chaetotaxy typical for genus. Katepisternal seta weak, less than half as long as anepisternal seta, and much weaker, orange.

Legs: Entirely yellow to orange.

Wing (Figs. 48, 49): Length 8.74–9.05 mm, width 3.48–3.50 mm, ratio 2.52–2.59. Apex of vein R 1 at 0.59 wing length, at level of anterior end of crossvein r–m. Cell c 1.39–1.53 times as long as pterostigma; pterostigma 4.11 times as long as wide. Vein R 2 + 3 slightly to moderately sinuous. Crossvein r–m at 0.68 distance from bm–cu to dm–cu on vein M. Vein M strongly curved apically; cell r 4 + 5 0.84–0.93 times as wide at apex as at level of dm–cu. Cell bcu with distal lobe moderately long, length of bcu 1.57–1.73 times as long as anterior margin, lobe 0.83–1.02 times as long as vein A 1 +Cu 2. Wing pattern mostly orange and moderate brown. C-band mostly orange, paler posteromedially in cell c, darker orange brown in pterostigma and with brownish streak in cell br. C-band and Sband broadly separated along veins R 2 + 3 and R 4 + 5 by hyaline band that extends from cell bm to costa, slightly narrowed along vein R 2 + 3. Basal hyaline area in cell dm medium sized. Basal half of S-band mostly orange, posterodistal margin brown, more broadly in cell cu 1, without or with weak incision in cell cu 1, proximal margin narrowly brown in radial cells; distal section orange and moderate brown, moderately broad, at apex of vein R 2 + 3 0.66–0.67 times width of cell r 2 + 3, extended almost to apex of vein M; hyaline area proximal to apex of band extending to vein R 2 + 3 or very slightly into cell r 1. V-band complete, mostly brown except proximal arm orange at least anteriorly bordering dm–cu and in cell r 4 + 5 except part or all of proximal margin, proximal arm separated from S-band, on posterior margin extended approximately half distance to vein A 1 +Cu 2; distal arm connected to proximal arm; cell r 4 + 5 with small diffuse hyaline area between V-band and vein M.

Abdomen: Mostly orange, without brown markings. Setulae orange.

Female terminalia: Oviscape 5.24–5.96 mm long, 1.26–1.39 times as long as mesonotum, straight in lateral view, orange basally, distal half brown; spiracle at basal 0.23–0.25. Eversible membrane (Figs. 69, 70) with 1 very large medial hooklike denticle and 40–50 small slender hooklike dorsobasal denticles, less than half as long as medial denticle, in 3–4 irregular rows in suboval pattern. Aculeus (Fig. 84) ventrally curved in lateral view, 5.55 mm long, 0.93 times as long as oviscape, in ventral view base slightly expanded, 0.16 mm wide; shaft 0.075 mm wide at midlength; tip (Fig. 99) 0.06–0.07 mm long, 0.01 times aculeus length, 0.045–0.050 mm wide, 1.20–1.56 times as long as wide, slightly tapered, nonserrate but with large notch on distal third, 0.020–0.025 mm wide in lateral view, 0.40–0.56 times ventral width. Spermathecae elongate ovoid.

Distribution. Anastrepha macracantha is known only from eastern Ecuador (Orellana, Sucumbíos).

Biology. The host plants and other aspects of the biology of this species are unknown.

Type data. Holotype Ƥ (deposited in trust at USNM for eventual deposit in EPNE, USNMENT 00054794), ECUADOR: Orellana: Reserva Etnica Waorani, Onkone Gare Camp, 1 km S, Transect Ent., 0° 39 ' 10 "S 76 ° 26 'W, transect 10, station 4, 220 m, insecticidal fogging, terra firme forest, 6 Jul 1995, T. L. Erwin et al. Project MAXUS Lot 1124. Paratypes: ECUADOR: Sucumbíos: Limoncocha, Malaise trap, 8 Apr 1974, B. Drummond, 1 Ƥ (FSCA USNMENT 00104655). Orellana: Reserva Etnica Waorani, Onkone Gare Camp, 1 km S, Transect Ent., 0° 39 ' 10 "S 76 ° 26 'W, transect 1, station 10, 220 m, insecticidal fogging, terra firme forest, 20 Jun 1996, T. L. Erwin et al. Project MAXUS Lot 1530, 1Ƥ (USNM USNMENT 00054678).

Other specimens examined. BRAZIL: Amazonas: Manaus, forest fragment R- 1112, R. E. O., 10 Sep 1985, B. Klein, 1 Ƥ (INPA USNMENT 00104565).

Etymology. This name is a noun in apposition, from the Greek “makros”, meaning long, and “akantha”, meaning thorn, in reference to the much larger medial hooklike denticle on the eversible membrane.

Comments. The Brazilian female apparently was pinned from fluid and is slightly shriveled. The apical part of the aculeus is twisted and was difficult to measure. This female is smaller than the type specimens but otherwise is similar and is presumed to be conspecific (wing length 8.12 mm, cell c/pterostigma ratio 1.35, vein M curvature ratio 0.95, mesonotum length 3.44 mm, oviscape length 4.40 mm, 1.28 times mesonotum length, aculeus length 4.16 mm).