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

description: Neoacanthoneura geomyzina Kameneva, new species
(Figs. 6, 43, 56)
Type material. Holotype ♂: Est. Cacao, lado SO Vol. Cacao P.N. Guanacaste, Prov. Guanacaste, 800–1600 m, 12–17 Jul 1993, Z.Fuentes (L S 323300_375700, # 2210; INBio CRI001 937205) (INBio). Paratypes: COSTA RICA: COSTA RICA, ♂: San José, San Gerardo de Dota, 9º33'N 83º43'W, along Rio Sevegre, 2200 m, "underside of leaves of broadleaved Asteraceae ", 18–21.VIII.1995, A.L.Norrbom, (USNM); 2♀, Est. Cacao, lado SO Vol. Cacao P.N. Guanacaste, Prov. Guanacaste, 800–1600 m, 12–17.VII.1993, Z.Fuentes (L S 323300_375700, # 2210 &# 2219; INBio CRI001 811931 & 811894) (INBio, SIZK); ♀, same but 1000–1400 m, VI.1990, Il Curso Parataxon. (L S 323300_375700, # 2210 &# 2219; INBio CRI000 284003); ♀, same but La Cruz, Estación Cacao, 1000–1500 m, Malaise trap, VIII.1996, M.Pereira (I.N. 323150_375500 # 4761; INBIO CRI000 307370); ♀, Prov. Alajuela, Zarcero, Alfaro Ruiz, 1700 m,, IV–V.1989, A.DelValle & A.Solis (240500, 493500; INBIOCRI 000020086) (INBio); ♀, Prov. Puntarenas, Est. Pittier, 1520 m, 1–29.VIII.1993, K.E.Taylor (L N 253250_449700, # 2294; INBIO CRI001 813141); ♀, same but 1670 m, 2–4.VII.1995, Malaise trap, E.Navarra (L S 330900_577400, # 5382; INBIO CRI002 425252); 2♀, same but Sendero Pittier, 1760 m, Malaise trap, 8– 22.III.1996, A.M.Moroto (L S 330250_577150, # 8547; INBIO CRI INB003 307349 & 307350) (INBio, SIZK); ♀, Prov. Puntarenas, Buenos Aires, Estación Altamira, Sendero Los Gigantes, 1450 m, Malaise trap, 4.I–3.II.2000, D.Rubi (L S 331700_572200, # 54810; INBIO CRI INB003 308062); ♀, Prov. Puntarenas, Send. [ero] a Cerro Pittier, 600 m Node la Estación, 1750 m, Malaise trap, 8.I.1998, M.Moraga (L S 331250_577150, # 48858; INBIO CRI 0 0 2 595724) (INBio); ♀: San José: Zurqui de Moravia, 10º03'N 84º01'W, 1600 m, Malaise trap, III.1992, P.Hanson (USNM); ♂, Prov. Puntarenas, Monteverde, 1500 m, Site B, Malaise trap, 20–26.VIII.1983, E. R. Barr (DEBU).
Diagnosis. Neoacanthoneura geomyzina is very similar to N. euphrantina in having vein R1 setulose over its whole length and wing pattern (consisting of a large apical spot, h-shaped bifurcated discal crossband and wide subbasal crossband) differing from it by the ventral margin of the face strongly produced anteriorly (in male), palpus very wide, flattened and white (in male), the apical spot either entirely separated by the hyaline crossband (in male) or at most touching discal crossband along the vein R4+5 (in female). The female of N. geomyzina has the dark apical spot entirely brown, with the proximal margin forming a conspicuous step along the vein R4+5, whereas in N. euphrantina the apical dark spot includes a hyaline spot in r4+5 and usually in r2+3.
Description. Head (Fig. 6) yellow, with whitish face, reddish frons and sometimes brownish occiput; length: height: width ratio 1: 1.05: 1.3; compound eye 1.3–1.4 times as high as long and frons 1.6–1.7 times as long as wide; face saddle-like, with ventral margin strongly produced anteriorly in male. Head setae and appendages as in N. euphrantina, except palpus of male white, extremely widened, as wide as long and 1.5 times as wide and as long as flagellomere 1. Thorax and legs as described for N. euphrantina. Wing (Figs. 43) elongate, 3–3.1 times as long as wide, with pattern similar to that in N. euphrantina, but large apical spot entirely separated from h-like discal crossband. Costal vein, R1 and vein R2+3s as in N. euphrantina. Pterostigma very narrow, 0.8–0.9 times as long as costal cell. Vein M ratio m3: m2: m4 = 1: 2.2–2.5: 3–3.4. Wing length 3.15–3.5 mm.
Male abdomen as in N. euphrantina; epandrium superficially similar to that in N. euphrantina, not dissected.
Female similar to male; face ventral margin moderately produced and not exceeding level of fronto-facial angle anteriorly; palpus of common shape, as in other species of Neoacanthoneura; wing wider than in male, 2.7– 2.8 times as long as wide; pattern similar to that in male, but hyaline spots forming distalmost hyaline crossband (distal of R1 apex) usually shifted proximally so apical spot partly touching h-like dark crossband along R4+5 vein; cells r2+3 and r4+5 inside apical brown spot entirely dark, without hyaline spots; other crossbands as described for female of N. euphrantina; pterostigma 0.75–0.95 times as long as costal cell, dark brown in apical 0.5–0.7 of length; vein M ratio m3: m2: m4 = 1: 7–8: 5–6.5. Wing length 3.3–3.8 mm. Abdomen as described for N. apicalis, with tergites mostly dark brown or black except tergite 1 sometimes yellow; sternites yellow to brownish yellow; female terminalia not dissected, aculeus externally similar to that in N. euphrantina.
Etymology. The name reflects similarity of the wing pattern to that in some species of the genus Geomyza (Opomyzidae).
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 28-29, DOI: 10.5281/zenodo.280302