Rivudiva venezuelensis ( Traver, 1943 )

Cruz, Paulo Vilela, Boldrini, Rafael, De Lima, Cláudia R. T. & Hamada, Neusa, 2022, It is a mess! How many species are in Rivudiva trichobasis Lugo- Ortiz & McCafferty, 1998 (Ephemeroptera: Baetidae)?, European Journal of Taxonomy 789 (1), pp. 153-191 : 186-187

Rivudiva venezuelensis ( Traver, 1943)

Fig. 20

Pseudocloeon venezuelensis Traver, 1943: 92 .

Cloeodes venezuelensis – Lugo-Ortiz & McCafferty 1999: 261. — Domínguez et al. 2006: 153. Rivudiva venezuelensis – Salles & Nascimento 2009: 234. — Salles et al. 2020: 43.

Diagnosis

MALE IMAGO. 1) dorsal portion of turbinate eyes with inner margins parallel, and circular ( Fig. 20A–B ); 2) hind wings absent; 3) abdominal segments I–VI translucid ( Fig. 20C–D ); 4) unistyliger cylindrical ( Fig. 20F–H ); 5) first segment of gonostylus short, length less than half of second segment, third segment clavate ( Fig. 20F–H ); 6) styliger plate convex, with one medial spine ( Fig. 20F–H ); 7) gonovectis long, V-like, deep into segment IX ( Fig. 20F–H ).

Material examined

Holotype VENEZUELA • ♂; Antimano; 900 m a.s.l., 13 Jan. 1940; R. Lichy leg.; PERC.

Figures

Fig. 20. Rivudiva venezuelensis (Traver, 1943) male imago, holotype (PERC). A. Head (l.v.). B. Head (d.v.). C. Body (d.v.). D. Body (l.v.). E. Detail of forewing. F. Detail of genitalia (v.v.). G. Detail of genitalia (d.v.). H. Detail of genitalia (v.v.). Scale bars: A = 0.44 mm; B = 0.23 mm; C–D = 1.3 mm; E = 1.25 mm; F–H = 0.13 mm.