Cyrnellus minimus Banks 1913

Figs 4A–4D

Cyrnellus minimus Banks 1913: 88 (original description); Flint 1967: 5 (redescription of male lectotype); Flint 1971: 29 (as synonym of C. fraternus); Holzenthal & Calor 2017: 419 (catalogue, as synonym of C. fraternus).

Diagnosis. Cyrnellus minimus is similar to C. fraternus, C. marginalis, C. boliviensis n. sp., and C. zapateriensis . Cyrnellus minimus and C. zapateriensis are most similar; these two species have similar subapicomesal spines on the inferior appendages, but with distinct insertion: subapical in C. minimus (Fig. 4B, ap) but more nearly apical in C. zapateriensis . The internal lobe of each inferior appendage is triangular in C. minimus and rounded in C. zapateriensis . Another difference from most of the other species is the near fusion of the posterior arms of the dorsal phallic sclerite (Figs 4C, 4D, ds). This character is also observed in C. ulmeri, this latter species being distinguished by the presence of a second subapicomesal spine on each inferior appendage.

Material examined. ARGENTINA: Buenos Aires: Río Paraná de las Palmas, Lima, 16.xii.1979, C.M. Flint Jr., 1 male (USNM) . BOLIVIA: Laguna Granja, Bella Vista, 13°15’50’’S, 63°42’33’’W, 06.v.2006, 1 male (IBN) . BRAZIL: Rondonia, 62 Km S de Ariquemes, Linea C-20, 7 Km E B- 65, 165 m. Fazenda Rancho Grande, 10°32,5´S, 62° 48´W, 17.xi.1991, Dr Petr., 10 males (USNM) . PARAGUAY: Dpto Concepción, Concepción, UV Light trap during 5:45–12:30 PM, warm night 5 days after heavy rain, J.A. Kochalka, 22 males (USNM); 9 Km South Villarica, 2.xii.1973, O.S. Flint Jr., 1 male (USNM) .

Distribution. Cyrnellus minimus is recorded for the first time from Bolivia. Argentina, Bolivia new record, Brazil, Paraguay.