Neoacanthoneura euphrantina Kameneva, new species
Creators: name: Kameneva, Elena P.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Ulidiidae
Neoacanthoneura
Neoacanthoneura euphrantina

description: Neoacanthoneura euphrantina Kameneva, new species
(Figs. 5, 41–42, 55, 76–81)
Type material. Holotype ♂: COSTA RICA, Santo Domingo, Prov. Heredia INBio Park, 29.VII.2001, E.P.Kameneva & V. A.Korneyev leg. (INBio). Paratypes: MEXICO: ♀, Est. Veracruz, Xalapa, Jardin Botanic, 18– 28.II.1998, V. A.Korneyev leg. (SIZK); GUATEMALA: ♀, Escuintla: Palin, McPhail traps, 14º24'N 90º42'W, 1992, J.Lopes (USNM); COSTA RICA: ♀, Puntarenas, Monteverde Biol. Res., 1500 m, cloud forest, sweep, 11. VI.2000, M. Buck, debu00133166 (DEBU); ♀, Santo Domingo, Prov. Heredia, INBio Park, 3.VIII.2001, E.P.Kameneva & V. A.Korneyev leg. (INBio); ♀, same but 6.VIII.2001, ♂, same but 7.VIII.2001, 3♂, 7 ♀, same but 8.VIII.2001, 8 ♀, same but 13.VIII.2001, E.P. Kameneva & V. A.Korneyev leg. (INBio, SIZK & USNM).
Diagnosis. Neoacanthoneura euphrantina differs from most species of the genus by the wing pattern consisting of 3 dark elements: the apical spot either joined along R4+5 (in male) or along M (in female) to the h-like, posteriorly bifurcated, discal crossband and the straight subbasal crossband isolated from other elements; as well as vein R1 dorsally setulose along its whole length. It is very similar to N. geomyzina in wing pattern type and entirely setulose R1, differing by the ventral margin of the face not strongly produced anteriorly, palpus narrow, non-flattened and the wing apical spot fused to the discal crossband along vein R4+ 5 in the male and along vein M in the female (separated in N. geomyzina). Females of N. euphrantina have the apical dark spot including a hyaline spot in r4+5 and usually in r2+3, anterior of the large hyaline incision in cell m, whereas in N. geomyzina the dark apical spot is entirely brown, with the proximal margin forming a conspicuous step along the vein R4+5.
Description. Head (Fig. 5) yellow, with whitish face, reddish frons and sometimes brownish occiput; length: height: width ratio 1: 1.2: 1.5; compound eye 1.3 times as high as long and frons 1.4 times as long as wide; face almost saddle-like, with poorly expressed medial carina and very shallow antennal grooves, very slightly incised in profile, with ventral margin not produced anteriorly. Head setae and appendages as in N. apicalis, anterior orbital seta at anterior one-third of frons, lateroclinate or slightly reclinate; 2–3 frontal setae in anterior 0.2 of frons length; gena with 8–10 peristomal setulae 0.8 times as long as gena high. Thorax yellow to brownish yellow, with brown medial vitta between dorsocentral rows of setulae, posterior of transverse suture extended laterally to intra-alar setae level; setae and setulae black (except most anepisternal setulae brown), 4 partly irregular rows of acrostichal setulae between dorsocentral rows; 2 acrostichal presutural setulae as long as other setulae; mesonotum and pleuron sparsely white microtrichose; otherwise as in N. apicalis. Legs yellow with black setae and setulae, often some or all coxae, femora and tibiae partly or entirely brown. Wing (Figs. 41–42) with pattern consisting of 3 dark elements: 1) large apical spot joined along R4+5 to 2) posteriorly bifurcated, h-like discal crossband and 3) straight subbasal crossband isolated from other elements. Costal vein evenly arcuate, with ventral row of setulae not thicker than setulae of dorsal row. Pterostigma very narrow, 0.7–0.8 times as long as costal cell. Vein R1 dorsally setulose along whole its length, at pterostigma subparallel to costa. Vein R2+3 inconspicuously undulate. Vein M ratio m3: m2: m4 = 1: 1.85: 2.7. Wing length 3.3–3.8 mm.
Male abdomen as in N. apicalis; male terminalia as on Fig. 76; epandrium with laterally flattened, slightly mesally curved and entirely separated surstyli as on Figs. 77–79, each surstylus with 3 prensisetae and 5–6 thin setulae; hypandrium with 2 almost symmetrical gonites bearing do distinct setulae or trichoid sensilla; ejaculator short, with rather narrow apodeme; phallapodeme Y-like (Fig. 79); phallus moderately long, simple, with conspicuously expressed setula-like scales, shorter in its basal and medial part and as long as phallus wide in its apical portion (Fig. 78).
Female (Fig. 42) similar to male, wing somewhat wider than in male; pattern similar to that in male, but apical spot isolated by deep hyaline incision from anterior margin (distal of R1 apex) to antero-basal corner of m cell and touching discal crossband along M vein; cells r2+3 and r4+5 each with round hyaline spot inside apical brown spot anterior of hyaline incision in m and sometimes fused to it forming deep hyaline incision; discal crossband wide, reaching from apical 0.6–0.8 of pterostigma to apical 0.2 of cell dmand dm-cu crossband, fused to short brown bar in dm-cu cell posterior of r-m crossvein becoming h-like bifurcated posteriorly; subbasal crossband isolated, reaching from apical 0.2–0.3 of costal cell through basal part of vein R2+3 and radial fork to CuA1 vein, usually including small hyaline spot or incision in dm cell; pale brown basal spot covering basal 0.2 of costal cell and extending posteriorly to base of cell br; basicostal cell hyaline; pterostigma 0.75–0.85 times as long as costal cell, dark brown in apical 0.6–0.7 of length; vein M ratio m3: m2: m4 = 1: 7–8: 5–6.5; vein R4+5 bare. Wing length 3.5–4.3 mm. Abdomen as described for N. apicalis, with tergites mostly dark brown or black except tergite 1 sometimes yellow; sternites yellow to brownish yellow; aculeus 5 times as long as wide, as on Fig. 80, with elongate oval cercal unit; three spherical spermathecae as on Fig. 81.
Etymology. The name reflects the similarity of the wing pattern to those of some species of the genus Euphranta (Tephritidae).
description: Published as part of Kameneva, Elena P., 2012, Revision of Aciuroides Hendel and Neoacanthoneura Hendel (Diptera: Ulidiidae: Pterocallini), pp. 1-33 in Zootaxa 3227 on pages 26-28, DOI: 10.5281/zenodo.280302