Anastrepha isolata Norrbom & Korytkowski 2009, new species
Creators: name: Norrbom, Allen L.
name: Korytkowski, Cheslavo A.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tephritidae
Anastrepha
Anastrepha isolata

description: Anastrepha isolata, new species   
Figs. 8, 41, 76, 120–121, 150  
 Anastrepha pittieri: Silva & Ronchi-Teles 2000: 205 [misidentification].   
 Anastrepha isolata Norrbom & Korytkowski in Korytkowski 2004: 57 [nomen nudum; in key].   
 Diagnosis. Anastrepha isolata differs from most species of Anastrepha in having an extension from the base of the S-band in the middle of cell cu 1 that is connected to the proximal arm of the V-band on the posterior wing margin. It differs from other species having that wing character, except A. pittieri, in having vein M strongly curved apically and the C-band with a well defined, yellow or subhyaline area in cell r 1 posterior to the basal third to half of the pterostigma. It differs from A. pittieri in having the aculeus tip sagittate, with large serrations.   
 Description. Mostly yellow to orange, with white to pale yellow markings. Setae dark brown to black.   
Head: Yellow to orange except brown ocellar tubercle. 3–4 frontal setae; 2 orbital setae, posterior seta well developed. Ocellar seta weak, at most 2 times as long as ocellar tubercle. Facial carina, in profile, straight to slightly convex dorsally and medially. Antenna extended 0.7–0.8 distance to ventral facial margin.  
Thorax (Fig. 8): Mostly yellow to orange with following areas white or pale yellow (not always well differentiated in dried specimens): postpronotal lobe; diffuse quadrate area between dorsocentral setae, sometimes absent; paired sublateral scutal vitta from transverse suture to posterior margin, including intra-alar seta; entire scutellum; dorsal margin of anepisternum; dorsal margin of katepisternum; katepimeron; and most of anatergite and katatergite. Posterior margin of scutum sometimes slightly darker orange brown, but without brown markings. Subscutellum and mediotergite entirely orange. Mesonotum 4.15–4.31 mm long. Scutum entirely microtrichose; setulae mostly yellow to orange, brownish laterally. Katepisternal seta weak, yellow, less than 0.40 as large as anepimeral seta.  
 Wing (Fig. 41): Length 9.0– 9.5 mm, width 3.68–4.14 mm, ratio 2.29–2.54. Apex of vein R 1 at 0.56–0.59 wing length. Cell c 1.12–1.22 times as long as pterostigma; pterostigma 3.20–3.78 times as long as wide. Vein R 2+3 without sharp bends or undulations. Crossvein r-m at 0.63–0.67 distance from bm-cu to dm-cu on vein M. Vein M strongly curved apically; cell r 4+5 0.62–0.67 times as wide at apex as at level of dm-cu. Cell bcu with distal lobe moderately long, length of bcu 1.69–1.92 times as long as anterior margin. Wing pattern mostly moderate to dark brown and orange. C-band with cell bc yellowish; cell c yellowish basally and anteriorly, anterodistal 0.25–0.50 brown, posteriorly with elongate medial subhyaline or hyaline area, yellow area extending into posterobasal corner of pterostigma and across cell r 1, broadly reaching R 2+3, and extending distally to level of 0.50–0.67 length of pterostigma; remainder of band in pterostigma, r 1, r 2+3, and br dark brown except posterobasal corner of pterostigma and sometimes small paler brown or dark orange brown subapical areas in r 1 and/or r 2+3. C-band and S-band broadly connected along vein R 4+5; hyaline area in cell br small, not reaching vein R 4+5 and 0.41–0.68 times as long as distal orange and brown area of cell; cell dm with basal hyaline area moderately large. Basal half of S-band mostly brown, with large medial orange area broadly bordering crossvein r-m and extending into anterior 0.25–0.50 of cell dm, sometimes reaching proximal margin of band in dm; with brown, lobelike projection to posterior wing margin in middle of cell cu 1 broadly connected to proximal arm of V-band along wing margin; distal section of S-band orange with broad brown margins or mostly moderate brown, moderately broad, at apex of vein R 2+3 0.61–0.80 times width of cell r 2+3, slightly to distinctly broadening in cell r 2+3, extended to apex of vein M; hyaline area proximal to it ending at vein R 2+3. Hyaline basomarginal spot in cell r 1 triangular with blunt apex, distal side sometimes slightly elongated, extended to R 4+5, its apex aligned proximal to crossvein r-m. V-band complete, mostly brown, broadly connected to S-band in cell r 2+3; proximal arm with slender medial orange area bordering anterior 0.50–0.75 of dm-cu and extending into cell r 4+5, usually reaching R 4+5; proximal arm moderately broad anteriorly, slightly gradually broadening posteriorly, with basal extension along wing margin, in one female with narrow connection to S-band in distal fourth of cell dm, at level of vein M 1.35–1.6 times as wide as distal arm and 1.0–1.55 times as wide as hyaline area proximal to it in cells r 4+5 and dm; distal arm relatively broad, connected to proximal arm.   
Abdomen: Mostly orange, without brown markings.  
 Male terminalia: Very similar to A. fenestrella. Lateral surstylus short, extended beyond prensisetae by ca. 2 times length of prensiseta; in lateral view posteriorly curved; in posterior view similar to A. pittieri, gradually tapered to bluntly acute apex, lateral margin slightly concave, medial margin convex. Proctiger with ventral and lateral sclerotized areas connected but lateral areas separate dorsally. Phallus 2.80 mm long, 0.68 times as long as mesonotum; glans 0.50 mm long.   
Female terminalia: Oviscape (Fig. 8) 1.96–2.01 mm long, 0.45–0.47 times as long as mesonotum; entirely orange; spiracle at basal 0.44–0.46. Eversible membrane (Fig. 76) with 16–18 hooklike dorsobasal scales in 2 irregular rows distal to similar number of shorter stouter scales in triangular pattern. Aculeus (Figs. 120–121) ventrally curved in lateral view, 1.08 mm long; in ventral view base expanded, 0.25 mm wide; shaft 0.11 mm wide at midlength; tip (Fig. 150) 0.14 mm long, 0.125 mm wide, 1.12 times as long as wide, 0.05 mm wide in lateral view, 0.4 times ventral width, in ventral view sagittate, triangular with margins straight and with large serrations to slightly beyond base, serrate part 1.14 times as long as tip, at base of serrate part distinctly flared and wider than at shaft. Spermathecae spherical.  
 Distribution. Anastrepha isolata is known from Amazonian Ecuador and Brazil (Amazonas).   
 Biology. The host plants and other aspects of the biology of this species other than dates of capture of adults are unknown.   
 Type Data. Holotype female (Pontificia Universidad Católica, Quito; held in trust at USNM USNMENT00054682), ECUADOR: Napo: Reserva Etnica Waorani, Onkone Gare Camp, 1 km S, Transect Ent., Trans. 9, Sta. 3, 0°39'10"S 76°26'W, 220 m, insecticidal fogging, terra firme forest, 10 Feb 1996, T. L. Erwin et al., Project MAXUS Lot 1483. Paratypes: BRAZIL: Amazonas: Coari, Rio Urucu, Angelim, 5°3'33"S 65°14'48"W, black light trap, 27–28 Nov 1992, P. F. Buhrnheim & N. O. Aguiar, 1♂ (INPA USNMENT00216231). ECUADOR: Napo: Reserva Etnica Waorani, Onkone Gare Camp, 1 km S, Transect Ent., Trans. 5, Sta. 6, 0°39'10"S 76°26'W, 220 m, insecticidal fogging, terra firme forest, 12 Feb 1995, T. L. Erwin et al., Project MAXUS lot 1045, 1♀ (USNM USNMENT00054600); same, Trans. 10, Sta. 1, 10 Feb 1996, Project MAXUS Lot 1491, 1♀ (USNM USNMENT00054603).   
 Etymology. The name of this species is a Latin adjective referring to the isolated hyaline area between the base of the S-band and the proximal arm of the V-band on the wing.
description: Published as part of Norrbom, Allen L. & Korytkowski, Cheslavo A., 2009, A revision of the Anastrepha robusta species group (Diptera: Tephritidae) 2182, pp. 1-91 in Zootaxa 2182 (1) on pages 30-32, DOI: 10.11646/zootaxa.2182.1.1, http://zenodo.org/record/5316544