Nemorimyza fuscibasis (Malloch)

Boucher, Stéphanie & Wheeler, Terry A., 2014, Neotropical Agromyzidae (Diptera) of the Mission Géodésique de l’Équateur: Becker (1920) revisited, Zootaxa 3779 (2), pp. 157-176 : 173

Nemorimyza fuscibasis (Malloch)

( Figs. 53–54 )

Agromyza maculosa var. fuscibasis Malloch, 1934: 476 .

Phytobia (Amauromyza) fuscibasis, Frick, 1952: 394 ; Spencer 1963: 336. Amauromyza fuscibasis, Spencer 1967: 8 ; Spencer 1973a: 71; Sasakawa 1992b: 825; Sanabria de Arévalo 1994: 71 Amauromyza (Annimyzella) fuscibasis, Spencer, 1981: 142 .

Nemorimyza fuscibasis, Zlobin 1996: 275 .

Agromyza carbonaria Zetterstedt , of Becker (1920).

MNHN specimen. Ecuador: Mirador, alt. 3800m, P. Rivet, 1903 (1 ♀).

Additional material examined. Ecuador: Pichincha Prov. Rio Palenque Research Stn. 200 m. ii.1983, M. Sharkey & L. Masner (2 ♂: LEM).

Comments. One female was identified by Becker (1920) as A. carbonaria Zett. (= Phytobia carbonaria (Zett.) , a Palaearctic species.

Nemorimyza fuscibasis (Malloch) is a distinctive species with a completely dark body including black halter, and a brownish calypter with a deep black fringe. The phallus is strongly sclerotized with the distiphallus consisting of narrow tubules that are diverging apically ( Figs. 53–54 ). The Ecuadorian specimen has unusual wing venation with a small closed cell at the junction of M1+2 and cross-vein dm-cu that should be treated as a mutation. Most of the orbital setae are lacking but the number of sockets indicates 5 orbital setae on each side. Two anterior setae remain on one side; they are particularly strong as normally found in N. fuscibasis . This species was previously known from Argentina ( Malloch 1934), Brazil ( Spencer 1963) and Colombia (Sanabria de Arévalo 1994).

Figures

FIGURES 53 – 54. Nemorimyza fuscibasis (Malloch), (53) phallus, lateral, (54) phallus, ventral. Scale bar = 0.05 mm.