Anastrepha nigrivittata 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 nigrivittata

description: Anastrepha nigrivittata, new species   
Figs. 15, 50, 84, 130, 156, 178  
 Anastrepha nigrivittata Norrbom & Korytkowski in Korytkowski 2004: 56 [nomen nudum; in key].   
 Diagnosis. Anastrepha lambda and nigrivittata differ from all other species of Anastrepha in having the base of the S-band interrupted along vein Cu 1, but with a posterior extension to the wing margin in cell cu 1 that is connected to the proximal arm of the V-band. A few other species of the robusta group have a similar extension, but in those species the base of the S-band is uninterrupted. Anastrepha lambda and nigrivittata also differ from all other species of Anastrepha except A. cordata Aldrich by their scutal color pattern, which includes 3 pairs of dark brown vittae (Fig. 15), of which the postsutural sublateral pair is fused to a dark band on the posterior margin to form a U-shaped mark, although the band does not extend laterally to include the intra-alar seta as in A. cordata. Anastrepha nigrivittata differs from A. lambda in having less of the scutellum brown, shorter terminalia (oviscape 2.01 mm long, 0.52 times as long as mesonotum; aculeus 1.35 mm long), and the aculeus tip shorter (0.15 mm long, 1.2 times as long as wide) and with more distinct serrations.   
 Description. Mostly yellow to orange, with dark brown and white to pale yellow markings. Setae dark red brown to dark brown.   
Head: Mostly yellow to orange. Frons with diffuse oval brown mark anteriorly, but otherwise without brown markings except ocellar tubercle. Median occipital sclerite with 3 moderate brown vittae and with medial brown spot dorsally, connected to brown area on ocellar tubercle, almost connected to medial vitta. 3 frontal setae; 2 orbital setae, posterior seta well developed. Ocellar seta weak, 1.5 times as long as ocellar tubercle. Postocellar seta absent. Facial carina, in profile, straight dorsally and medially. Antenna extended 0.85 distance to ventral facial margin.  
Thorax (Fig. 15): Mostly yellow to orange with dark brown markings. Typical white or pale yellow areas (postpronotal lobe; paired sublateral scutal vitta from transverse suture to intra-alar seta; medial scutal vitta; apical 0.67 of disk and all of sides of scutellum; dorsal margin of anepisternum; katepimeron; and most of anatergite and katatergite) poorly differentiated in holotype, probably present in live or fluid preserved material. Scutum with 3 paired brown vittae; submedial vitta between acrostichal and dorsocentral lines, extended from anterior margin to 0.60 distance from transverse suture to posterior margin, isolated, anteriorly almost as broad as space between vittae, narrower near midlength; narrow, mostly presutural, sublateral vitta, slightly oblique, extended almost to postsutural supra-alar seta; postsutural sublateral vitta between dorsocentral and intra-alar lines, extended anteriorly almost to transverse suture, connected to band on posterior scutal margin to form U-shaped mark; posterior band narrowest medially, extended almost to acrostichal seta anteriorly and broadly onto basal third of disk of scutellum (but not including basal seta), fading posteriorly, lateral margin extended almost to intra-alar seta. Subscutellum and mediotergite dark brown except very narrowly medially. Posteroventral spot on anatergite and katatergite also brown. Mesonotum 3.85 mm long. Scutum entirely microtrichose; setulae mostly brownish. Katepisternal seta weak, yellowish, twice as long as setulae.  
 Wing (Fig. 50): Length 9.40 mm, width 3.96 mm, ratio 2.37. Apex of vein R 1 at 0.53 wing length. Cell c 1.22 times as long as pterostigma; pterostigma 3.87 times as long as wide. Vein R 2+3 without sharp bends or undulations. Crossvein r-m at 0.65 distance from bm-cu to dm-cu on vein M. Vein M only slightly curved apically; cell r 4+5 1.14 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. Wing pattern mostly orange and moderate brown. C-band with cell bc yellowish to subhyaline; cell c yellowish basally, anteriorly and distally, fading to subhyaline posteromedially; anterodistal corner of cell c and all of pterostigma orange brown, cell r 1 proximal to fork of Rs, cell br and narrow distal margin in cells r 1 and r 2+3 moderate brown; remainder of band in cells r 1 and r 2+3 orange. C-band and S-band broadly connected along vein R 4+5; hyaline area in cell br small, reaching vein R 4+5 but 0.40 times as long as distal orange area of cell; cell dm with basal hyaline area moderately large. Base of S-band completely interrupted in cells dm and cu 1; basal section brown; medial section mostly orange with narrow brown margins, except proximal margin in cell 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, moderately broad, at apex of vein R 2+3 0.67 times width of cell r 2+3, even in width, well separated from 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 slightly elongated, extended to R 4+5, its apex aligned proximal to crossvein r-m. V-band complete, mostly brown, separated from S-band along vein R 4+5; proximal arm with small medial orange area bordering anterior 0.60 of dm-cu and extending slightly into cell r 4+5; moderately broad anteriorly, gradually very slightly broadening posteriorly, at level of vein M ca. 2 times as wide as distal arm and as broad as hyaline area proximal to it in cells r 4+5 and dm; distal arm relatively broad and straight.   
Abdomen: Mostly orange brown. Base and narrow lateral margin of syntergite 1+2, and narrow medial vitta on syntergite 1+2 and tergite 3 yellow.  
Male terminalia: Unknown.  
Female terminalia: Oviscape 2.01 mm long, 0.52 times as long as mesonotum; entirely orange; spiracle at basal 0.42. Eversible membrane (Fig. 84) with ca. 15 relatively short, stout, hooklike dorsobasal scales distal to similar number of smaller stouter scales in triangular pattern. Aculeus (Fig. 130) slightly ventrally curved in lateral view, 1.35 mm long; in ventral view base expanded, 0.28 mm wide; shaft 0.12 mm wide at midlength; tip (Figs. 156, 178) 0.15 mm long, 0.125 mm wide, 1.2 times as long as wide, 0.07 mm wide in lateral view, 0.56 times ventral width, in ventral view broadly triangular with sides very slightly convex, apical 0.53 finely serrate. Spermathecae spherical.  
 Distribution. Anastrepha nigrivittata is known only from Guyana.   
 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 (USNM USNMENT00052101), GUYANA: Mazaruni-Potaro: Takutu Mountains, 6°15'N 59°5'W, 19 Dec 1983, W. E. Steiner & P. J. Spangler.   
 Etymology. The name of this species is a Latin adjective referring to the dark stripes on the scutum.
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 41-42, DOI: 10.11646/zootaxa.2182.1.1, http://zenodo.org/record/5316544