fiebrigi Kieffer, 1917b: 309 (female). Type locality: Paraguay. Type material (HMNH, lost). Distr.- Brazil (São Paulo, Rio de Janeiro), Paraguay, Argentina (Salta: Departamento Rivadavia, Misión La Paz, 22°23'11.58"S, 62°31'18.18"W. Formosa: Estancia La Marcela, 35 km E El Colorado, 26°17'21''S, 59°08'40''W. Santiago del Estero: Río Hondo, 27°29'54.8''S, 64°51'37.9''W. Chaco: Villa Río Bermejito, 25°38'27.25"S, 60°15'50.55"W. Misiones: El Soberbio, 27°17'29.81"S, 54°11'43.39"W. Corrientes: Gobernador Virasoro, 28°2'12.13"S, 56°0'53.04"W; arroyo Pay Ubre, 29º01'41.2''S, 58º10'26.6''W, 66 m. Entre Ríos: Colón, balneario Villa Elisa, 32°13'31.74"S, 58°7'47.78"W; Gualeguaychú, 33°0'26.40"S, 58°30'2.69"W. Buenos Aires: Tigre, Villa La Ñata, 34°21'58.09"S, 58°40'38.54"W; Ensenada, Reserva Natural Integral Punta Lara, marginal forest, 34º47'21.2''S, 57º59'56.8''W; Berisso, Los Talas, 34°52'16.47''S, 57°51'8.76''W). Refs.: Spinelli & Balseiro, 1982: 226; Spinelli, 1983b: 410; Spinelli et al., 1989: 735; Cazorla et al., 2006: 112; Cazorla et al., 2013: 94; Cazorla, 2016: 187; Cazorla et al., 2018: 7.
Diagnosis: a yellowish species of the subgenus Stilobezzia s. str. Scutum
yellowish with sub lateral brown bands and lateral margins darker; wing with small brown spots on crossvein r-m and apex of vein RJ. Parameres with apodemes H shaped, posteromedian projection moderately swollen, narrowed distally and bent ventrally. Pupa with 8-10 apical and 3-5 posterolateral pores in the respiratory organ; fourth abdominal segment with 5 dpm , 2 dasm, 2 lpm, 4 vpm, and 2 lasm tubercles.
Cazorla et al, redescribed and illustrated by by using (BCM), and the pupa is redescribed by using BCM and SEM. Inmature stages were collected como pupa in mud in flooted soilin Corrientes province. Argentina. Adult and pupae are compared with their similar congener Stilobezzia coquillet