Camelobaetidius francischettii Salles, Andrade & Da­Silva, 2005

Salles, F. F., Andrade, M. B. & Da-Silva, E. R., 2005, Camelobaetidius francischettii: a new species of Baetidae (Ephemeroptera) from Brazil, Zootaxa 1027 (1), pp. 47-53 : 47-53

publication ID 10.11646/zootaxa.1027.1.3

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Camelobaetidius francischettii Salles, Andrade & Da­Silva

sp. n.

Camelobaetidius francischettii Salles, Andrade & Da­Silva , sp. n.

Nymph. Body length: 5.3­6.2 mm. Caudal filaments length: 4.8­6.1 mm.

Head ( Figs. 1 View FIGURE 1 , 2 View FIGURES 2–8 ). General coloration brown, vertex with irregular yellowish marks, frons marked with white as in Fig. 2 View FIGURES 2–8 ; turbinate portion of male compound eyes dark reddish brown. Antennae brownish­translucent. Labrum ( Fig. 3 View FIGURES 2–8 ) anterodorsally with several long, fine, simple setae, and with few short, fine, simple setae, scattered over surface; 2.5x wider than long. Left mandible ( Fig. 4 View FIGURES 2–8 ) with incisors with five denticles; prostheca robust, apically denticulate; minute, acute setae, between prostheca and subtriangular process. Right mandible ( Fig. 5 View FIGURES 2–8 ) with incisors with five to six denticles; prostheca robust, narrower than left prostheca; minute, acute setae, between prostheca and mola. Hypopharynx as in Fig. 6 View FIGURES 2–8 . Maxillae ( Fig. 7 View FIGURES 2–8 ) with 1+1 fine, simple, setae; palp segment one cylindrical. Labium ( Fig. 8 View FIGURES 2–8 ) with glossae with 12 fine, simple setae medially, and eight to ten fine, simple setae distally; paraglossae longer than glossae, apically with two rows of long, apically pectinate setae, dorsally with two robust, simple setae; segment 2 of labial palp with distomedial process rounded and strongly produced, inner margin with fine, simple setae, eventually with two acute setae, and dorsally with six long, fine, simple setae; segment three scattered with few acute setae over surface.

Thorax. Pro and mesonotum light brown, with brownish marks as in Fig. 1 View FIGURE 1 . Metanotum brown. Pleurae and sterna yellowish­white. Legs ( Figs. 1 View FIGURE 1 , 10, 11 View FIGURES 9–14 ) with ventral margin of fore femora presenting prominent protuberance near base and entirely scattered with spines, dorsal margin with row of long, robust, simple setae; femora light brown, with brownish marks as in Fig. 10 View FIGURES 9–14 ; fore tibia with ventral margin entirely scattered with spines, with indentation at apex, and abundant, fine, simple setae on dorsal margin; mid and hind tibiae with ventral margin scattered with few short, acute, simple setae; tibiae brown ventrally and light brown dorsally; ventral margin of tarsi with row of 12 to 13 apically pointed, simple setae, and one long, fine, simple seta; tarsal claws with 34 to 37 denticles ( Fig. 11 View FIGURES 9–14 ); small thoracic gill present at base of fore leg ( Fig. 9 View FIGURES 9–14 ). Prosternum with single, medial protuberance ( Fig. 9 View FIGURES 9–14 ).

Abdomen. General coloration brown, with light brown marks as in Fig. 1 View FIGURE 1 . Posterior margin of terga as in Fig. 12 View FIGURES 9–14 . Sterna whitish­brown. Gills ( Fig. 13 View FIGURES 9–14 ) whitish, with main trachea unpigmented, margins light brown. Paraprocts ( Fig. 14 View FIGURES 9–14 ) with ca. 22 marginal small spines. Terminal filament approximately the length of the 10 th segment ( Fig. 1 View FIGURE 1 ). Cerci light brown.

Adults. Unknown.

Type material. Holotype: female nymph, Alagoas, Murici, waterfall at the Fazenda Pedra Branca , 09°11,114’S, 35°55,627’W, 16/iii/2004, C.N. Francischetti leg ( MNRJ) GoogleMaps . Paratypes: two nymphs, same data as holotype ( DZRJ); two nymphs, same data as holotype ( IFML) GoogleMaps .

Additional non­type material. 2 nymphs, Rio de Janeiro, Piraí, Reservatório de Ribeirão das Lajes, Cachoeira Maria Ferreira, BIOÁQUA leg (LAQU). 6 nymphs, same data, except Cachoeira do Sertão (LAQU).

Etymology. We are pleased to name this species after our friend and colleague, Cesar Nascimento Francischetti, collector of the type­material and several other mayflies studied byus.

Distribution: Alagoas, Murici, and Rio de Janeiro, Piraí.


Museu Nacional/Universidade Federal de Rio de Janeiro