Rivudiva coveloae ( Traver, 1971 )

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 : 184-185

Rivudiva coveloae ( Traver, 1971)

Fig. 19

Baetis coveloae Traver, 1971: 61 .

Camelobaetidius coveloae – Lugo-Ortiz & McCafferty 1999: 258. — Domínguez et al. 2006: 129.

Rivudiva coveloae – Salles & Nascimento 2009: 234. — Salles et al. 2020: 42.

Diagnosis

MALE IMAGO. 1) dorsal portion of turbinate eyes with inner margins parallel, and oval ( Fig. 19A ); 2) hind wings present ( Fig. 19D ); 3) anterior margin of abdominal terga darker ( Fig. 19A ); 4) unistyliger cylindrical with small inner projection ( Fig. 19C ); 5) first segment of gonostylus elongated, length more than half of second segment, third segment elongate ( Fig. 19C, E ); 6) styliger plate concave, with one medial spine ( Fig. 19F–G ); 7) gonovectis short, sinuous, not deep into segment IX ( Fig. 19E–F ).

Material examined

Holotype URUGUAY • ♂; Prov. Maldonado, Cerro Animas; 14 Sep. 1950; C.S. Carbonell leg.; PERC.

Figures

Fig. 19. Rivudiva coveloae (Traver, 1971) male imago, holotype (PERC). A. Dorsal view. B. Detail of forewing. C. Genitalia (v.v.). D. Hind wing. E. Detail of genitalia (d.v.). F. Detail of genitalia (v.v.). G. Detail of genitalia (v.v.). Scale bars: A–B = 2.5 mm; C = 0.3 mm; D = 0.45 mm; E–G = 0.08 mm.