Rivudiva minantenna Lugo-Ortiz & McCafferty, 1998

Salles, F. F., Nieto, C. & Cruz, P. V., 2020, New species of Rivudiva Lugo-Ortiz & McCafferty (Ephemeroptera: Baetidae) with comments on R. minantenna Lugo-Ortiz & McCafferty and R. trichobasis Lugo-Ortiz & McCafferty, Zootaxa 4786 (1), pp. 37-52: 48-49

publication ID


publication LSID


persistent identifier


treatment provided by


scientific name

Rivudiva minantenna Lugo-Ortiz & McCafferty, 1998


Rivudiva minantenna Lugo-Ortiz & McCafferty, 1998 

Rivudiva minantenna Lugo-Ortiz and McCafferty (1998: 63)  ; Salles et al. (2004: 727); Domínguez et al. (2006: 176); Salles & Nascimento (2009: 233).

Material examined. Paratype (slide #301 IBN): BRAZIL, Rio Grande do Sul state, Rio Santa Maria, S 31 o 10’ W 54 o 23’, 280 m. a.s.l., xi.1964, F Plaumann col. 3 nymphs,GoogleMaps  BRAZIL, Espírito Santo state, Linhares, Rio São José , S 19° 07’ 33.1’’, W 40° 14’ 26.1”, 20 m. a.s.l., 26.viii.2011, FF Salles leg. (1 UFVB, 1 IBN, 1 used for SEM images)GoogleMaps  .


Nymph. 1) antenna without spine-like setae on scape and pedicel; 2) distal margin of labrum with deep, wide, medial emargination (as in Fig. 1View FIGURES 1−6); 3) dorsal surface of labrum with irregular row of setae; 4) tuft on apex of lingua formed by long simple setae (as in Fig. 4View FIGURES 1−6); 5) maxillary palp segment I long, reaching apex of galea-lacinia; 5) glossa with base ventrally expanded, apex narrow, obliquely truncate and with dorsal thick setae distomedially (as in Fig. 6View FIGURES 1−6); 6) hind wing pads present; 7) trochanter without robust, long and apically pointed setae; 8) outer dorsal row, medial dorsal row and inner dorsal row of femora with robust, long and apically pointed setae, those of outer row almost as long as maximum width of femur ( Fig. 32View FIGURES 30−37); 9) abdominal sterna without robust apically pointed setae; 10) paraproct with 10-12 marginal spines (according to original description).

Imago. Unknown.

Distribution. Brazil (Rio Grande do Sul, Santa Catarina, and Espírito Santo) ( Fig. 41View FIGURE 41).

Comments. This species was also reported from Rio de Janeiro by Salles et al. (2004). However, based on the new evidences presented here, it became clear that these specimens belong to an additional new species. As we only have a single mature nymph in good condition, we refrain from describing this species in the present paper.


Vicosa, Universidade Federal de Vicosa, Museum of Entomology














Rivudiva minantenna Lugo-Ortiz & McCafferty, 1998

Salles, F. F., Nieto, C. & Cruz, P. V. 2020

Rivudiva minantenna

Salles, F. F. & Nascimento, J. M. C. 2009: 233
Dominguez, E. & Molineri, C. & Pescador, M. L. & Hubbard, M. D. & Nieto, C. 2006: 176
Salles, F. F. & Da-Silva, E. R. & Serrao, J. E. & Francischetti, C. N. 2004: 727
Lugo-Ortiz, C. R. & McCafferty, W. P. 1998: )