Anacroneuria tucuman sp. nov.

(Figs. 5-9)

Material examined. Holotype ♂ and 1♂ paratype from Argentina, Tucuman Province, Horco Molle, 700 m, 15 January 1980, L. Stange (FSCA) .

Adult habitus. General color pale yellow brown. Head with brown lappets and a diffuse spot forward of ocelli and a pair of small diffuse spots between lappets. Pronotum mostly brown but with pale lateral margins, a pale median band on the anterior half of the disk and a pale area incorporated within dark region in center of disk (Fig. 5). Legs pale brown except for narrow dark brown band on distal end of femora. Wings pale, transparent; veins pale amber except for C and R veins which are very pale.

Male. Forewing length 12-14 mm. Hammer a low, almost transparent bubble-like structure (Fig. 6). Aedeagal apex simple, but slightly offset from shoulders by a subtle notch (Figs. 7-9); a pair of small membranous lobes occur on the posterior margins of the apical area and an inverted Y-shaped keel with long stalk occurs on the dorsum. In lateral aspect the sclerotized area bulges slightly and is offset from the pale keel. Hooks slender (Figs. 7, 9).

Female. Unknown.

Larva. Unknown.

Etymology. The species name, used as a noun in apposition, is based on the Argentine province in which the type specimens were collected.

Diagnosis. Only three Anacroneuria species are currently known from the neighboring province of Salta [ A. arrazayalensis Orce (Orce 2003); A. marshalli Stark (Stark 2007); A. saltensis Froehlich (Froehlich 2002)] and only A. reedi (Navás) (Navás 1919), a species whose identity is in question (Illies 1966), has been reported from Tucuman Province. The aedeagus of the new species is generally similar to that of A. saltensis but the keel in that species consists of a pair of parallel lines, the apex is not offset from the shoulders and the hammer is thimble shaped.

Several other Andean species, such as A. pachacuti Stark & Sivec, 1998 have similar aedeagal shape and features but none have the combination of a slightly offset apex, a Y-shaped keel and the low bubble-like hammer found in A. tucuman .

A. tucuman sp. nov. Tucuman New record