Pterovianaida melchiori Montemayor & Carpintero 2007, sp. n.

Pterovianaida melchiori sp. n.

Body brownish, antennae and legs reddish brown, clothed with long, slender, scattered, suberect hairs. Total length 2.45 mm.

Head (Figure 1). Slightly granulated, covered with macrochaetae, scattered and slightly curved. Length 0.23 mm, width across eyes 0.3 mm. Interocular space 0.09 mm. Rostrum reaching second abdominal segment. Antennae (Figure 2) covered with suberect hairs that have the same length as width of antennal segment interspersed with hairs twice the length of width of antennae. Length segment I= 0.11 mm; II= 0.31 mm; III= 0.33 mm; IV= 0.37 mm.

Thorax. Pronotum length 0.32 mm; basal width 0.6 mm. Collar presents in anterior and lateral margins a few long erect hairs. Metathoracic scent gland (Figure 4) with anterior branch curved downwards, more developed and raised than posterior branch; the latter slender and directed backwards. Rostral channel faintly developed.

Abdomen. Pygophore (Figure 5) narrower than the rest of the abdomen; lateral margins glabrous, posterior margin covered with long, thin, erect hairs interspersed with shorter ones; dorsally at its posterior margin it invaginates and then protrudes as a flat projection; ventrally it forms a uniform lobe. Paramere glabrous, curved, gradually narrows towards the apex which is romus; posterior margin with two lobes at its base, the first more obvious than the second.

Material examined. Holotype male, Peru, Ucayali, Kirigueti (light trap), 73 ° 07´08"W, 11 ° 38´13"S,

August 2004, J. Williams coll., (slide mounted), in the collection of the Museo de La Plata (MLP).

Etymology. This species is dedicated to Melchior Borsinger, grandfather of the first author.