casali Cavalieri & Chiossone, 1966: 45 (female). Type locality: Argentina, San Luis, crossing Rd. Villa Saladillo to La Petra and Río Quinto, 33°10'31.6''S, 65°49'04.4''W. HT F (MLPA). Distr.: Argentina (Salta: Rosario de la Frontera, 25°47'55.1''S, 64°58'03.5''W. San Luis: type locality. Santiago del Estero: Termas de Río Hondo, 27°29'54.8''S, 64°51'37.9''W), Uruguay. Refs.: Cavalieri & Chiossone, 1966: 45; Chiossone, 1969: 17.
NEW RECORDS:
Salta: Molinos, 25°25'7.72''S, 66°19'23.74''W. La Rioja: río Vinchina at provincial Rt. 76, 28°42'5.19.4"S, 68°18'22.9"W, 1660 m; río Agua Caballos, access to Talampaya, 29°47'5.87"S, 67°59'59.09"W. Mendoza: Cañón del Atuel, 34°50'49.22"S, 68°30'30.29"W; provincial Rt. 173, between Valle Grande and Nihuil, 34°53'20.56"S, 68°35'15.50"W. La Pampa: Lonquimay, 36°28'9.18"S, 63°36'58.81"W; laguna de Utracán, 37°16'56.14"S, 64°35'26.84"W. Neuquén: 25 km E Zapala, 38°54'37.97"S, 69°46'49.99"W; Villa El Chocón, 39°15'42.17"S, 68°46'43.81"W. Río Negro: Río Colorado, 38°59'25.80"S, 64° 4'13.55"W.

NOTE: Spinelli et al. (2005) recorded Leptoconops brasiliensis (Lutz) from Argentina on the basis of a single specimen collected in Molinos, Salta province (25°25'7.72''S, 66°19'23.74''W). Recently, through the courtesy of Dra. Maria Luiza Felippe-Bauer from the Instituto Oswaldo Cruz, Rio de Janeiro, we had the opportunity to study phoptographs of the type-series of this species, concluding that the specimen from Molinos belongs to Leptoconops casali. For this reason, Leptoconops brasiliensis is excluded from the argentinean fauna, and Molinos is herein added as a new locality under Leptoconops casali.






Small species. Distal flagellar segment appreciably greater than the preceding one. Fronto-clipeo oval. Third palpal segment with an elongated sensory fossa and irregular edges. Radial cell evident. Eighth little excavated sternite. Two spermatheca.

Holotype female (HT F) Deposited (MLPA)