Neoacanthoneura trypetina Kameneva

Kameneva, Elena P., 2012, Revision of Aciuroides Hendel and Neoacanthoneura Hendel (Diptera: Ulidiidae: Pterocallini), Zootaxa 3227, pp. 1-33 : 32

Neoacanthoneura trypetina Kameneva , new species

( Figs. 3 , 44 , 59–60 )

Type material. Holotype ♀: DOMINICAN REPUBLIC, Barahona , 9.2 km NW Paraiso, confluence of Rio Nizao | and Rio Coltico, 18º03'N 71º12'W, 230 m, 9–10.VIII.1990, J.Rawlings, S.Thompson ( CM) . PARATYPE: ♀, DOMINICAN REPUBLIC, Sanchez , R . Dom., 13–18. VI.[19]15 ( AMNH).

Diagnosis. Neoacanthoneura trypetina differs from other species of the genus by the following combination of characters: lateral vertical and frontal setae lacking, short ocellar seta short, vein R1 bare basally, wing pattern consisting of a large apical spot, 2 short isolated crossbands on crossveins r-m and dm-cu, and wide, straight subbasal crossband, and these crossbands not approximated, as well as vein A2 present as a fold. This species is somewhat similar to N. euphrantina and N. geomyzina in wing pattern and venation, differing by the other characters listed above.

Description. Female. Head ( Fig. 59 ) brownish yellow, with whitish face, reddish frons and sometimes brownish gena and occiput; length: height: width ratio 1: 1.75: 1.9; compound eye 1.6 times as high as long and frons 1.8 times as long as wide; face saddle-like, with ventral margin not produced. Head setae and appendages as in N. magnipennis , except frontal setae absent and ocellar seta short, half as long as postocellar; palpus narrow, as long as flagellomere 1. Thorax and legs as described for N. euphrantina new species. Wing ( Fig. 44 ) moderately elongate, 2.8 times as long as wide, hyaline with 4 separated dark brown elements: 1) wide subbasal crossband from apical 0.3 of costal cell to middle of cua1 cell, 2) short discal crossband from apical half of pterostigma to r-m crossvein, 3) pale brown spot on crossvein dm-cu and 4) large apical spot widely isolated from other elements. Costal vein evenly arcuate, non-modified, R1 setulose only distally of Sc apex, vein R2+3 inconspicuously sinuate. Pterostigma moderately narrow, 0.7 times as long as costal cell. Vein M ratio m3: m2: m4 = 1: 2.5: 2,65. Wing length 3.5 mm. Abdomen as described for N. apicalis new species, with tergites brown except tergite 1 yellow; sternites yellow to brownish yellow; aculeus narrow, with narrowly oval cercal unit ( Fig. 60 ); terminalia not dissected.

Male unknown.

Comments. The position of this species in the genus is obscure. It is not clear if the frontal setae are absent (as in all the related genera) or were present (apomorphy of Neoacanthoneura ), but broken off.

Etymology. The name reflects similarity of the wing pattern to that in some species of the genus Trypeta (Tephritidae) .

Figures

FIGURES 1 – 7. Heads, left (1 – 6) and head and mesonotum, dorsally (7 )): 1, Aciuroides gephyra; 2, A. insecta; 3, Neoacanthoneura trypetina; 4, N. magnipennis; 5, N. euphrantina; 6, N. geomyzina; 7, N. euphrantina. Abbreviations: dc—dorsocentral seta, fr—frontal seta, oc—ocellar seta, or—orbital seta.

FIGURES 41 – 48. Neoacanthoneura, wing: 41 – 42, N. euphrantina new species: 41, holotype 3 (Costa Rica, Santo Domingo, INBio Park (INBio )); 42, paratype Ƥ (Costa Rica, Santo Domingo, INBio Park (SIZK )); 43, N. geomyzina new species, holotype 3 (Costa Rica, San José, San Gerardo de Dota (INBio )); 44, N. trypetina new species, holotype Ƥ (Dominican Republic, Barahona (CM )); 45 – 46, N. magnipennis (Colombia, Anolama (USNM )): 45, 3; 46, Ƥ; 47 – 48, N. trupaneina new species: 47, holotype 3 (Ecuador, Napo (USNM ENT 00054716 )); 48, paratype Ƥ (Ecuador, Napo, USNM ENT 0 0 0 53554 (SIZK )).

FIGURES 55 – 60. Neoacanthoneura, habitus, laterally (55 – 59) and ovipositor, dorsally (60 )): 55, N. euphrantina new species, holotype 3 (Costa Rica, Santo Domingo, INBio Park (INBio )); 56, N. geomyzina new species, paratype 3 (Costa Rica, San José, San Gerardo de Dota (USNM )); 57, N. magnipennis, 3 (Colombia, Anolama (USNM )); 58, N. trupaneina new species, holotype 3 (Ecuador, Napo, USNM ENT 00054716); 59 – 60, N. trypetina new species, holotype Ƥ (Dominican Republic, Barahona (CM).