Hymenoepimecis japi Sobczak, Loffredo, Penteado-Dias & Gonzaga, 2009

(Fig. 3A–F)

Diagnosis. 1) body orange, except the head, hind leg (proximal part of coxa orange), and posterior margins of tergites II–V and tergites VI+ black; 2) fore wing hyaline; 3) head, in dorsal view, with gena slightly convex behind eyes; 4) face smooth and without a carina; 5) occipital carina slightly upcurved and not reduced dorsally; 6) pronotum with the pocket-like structure not reduced longitudinally; 7) epicnemial carina vestigial ventrally; 8) sternite I with a low, rounded swelling posteriorly; 9) female with tarsal claw with square lobe, and with apex overtaking the lobe (tarsal claw single in males); 10) female with ovipositor sheath about 0.8 × as long as the hind tibia.

Distribution. Brazil. This is the first record of the species and genus for Argentina (Fig. 7C).

Biological notes. Parasitoid of the tetragnathid Leucauge roseosignata Mello-Leitão, 1943 (Sobczak et al. 2009) and the araneid Mecynogea bigibba Simon, 1903 (Messa et al. 2017).

Material examined. ARGENTINA: La Rioja, Sta. [= Santa] Cruz ca. Anillaço, 1700m., 06.IV.2002, Malaise Trap in Humid Ravine (P. Fidalgo leg.), 1♀, FSCA ; idem, but 01–14.XII.2002, 1♀, FSCA .