Cloeodes aiuruoca Massariol, Angeli & Salles, sp. nov.
Creators: name: Salles, F. F.
name: Massariol, F. C.
name: Angeli, K. B.
name: Lima, M. M.
name: Gattolliat, L.
name: Sartori, M.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Ephemeroptera
Baetidae
Cloeodes
Cloeodes aiuruoca

description: Cloeodes aiuruoca Massariol, Angeli & Salles, sp. nov.
Figures 1 a, 4a, 6, 7, 30, 31c.
Diagnosis. NYMPH. A) Large body size (> 7.0 mm); B) Body color pattern predominantly uniform (Figs. 1 a, 4a); C) Labrum, medially, with two long setae (Fig. 6 a); D) Maxillary palp short (around ¾ length of galea-lacinia, Fig. 6 g); E) Inner margin of labial palp segment III distinctly shorter than outer margin (Fig. 6 i); F) Distal projection of fore femur long (distinctly exceeding apex of femur, Figs. 7 a, 7d); G) Gills with medial rib (Fig. 7 h).
Nymph. Lengths. Body: 7.0–10.0 mm; cerci: 3.0– 4.5 mm; terminal filament: 3.0– 4.5 mm; antenna: 2.0– 2.5 mm.
Coloration (Figs. 1 a, 4a). General coloration yellowish-white washed with brown. Head light brown with light yellow narrow longitudinal stripe on whole length of vertex; frons with area between antennal sockets yellowish. Thorax yellowish brown with brownish marks. Fore leg with coxa brown; trochanter yellowish-brown; femur yellowish washed with brown, except at base and apex of anterior surface; tibia and tarsus brown. Abdomen yellowish-brown washed with brown to dark brown with one lighter medial longitudinal stripe; segments II–VIII with yellowish smooth antero-sublateral area; segments VIII and IX eventually lighter. Sterna yellowish-brown. Caudal filaments brown with a yellowish band subdistally.
Head. Labrum (Figs. 6 a, 6b). Length about 0.9 × maximum width; dorsal arc with two medial setae; ventrally with 7–9 spine-like setae near lateral margin.
Hypopharynx as in Fig. 6 c.
Mandibles (Figs. 6 d, 6e). Margin between prostheca and mola of left mandible with short spine-like setae (Fig. 6 f); denticles of mola constricted at base (Fig.6 f).
Maxilla (Fig. 6 g). Medially with 1 spine-like seta + 8 apically pointed setae. Maxillary palp short (around ¾ length of galea-lacinia); palp segment II equal to length of segment I.
Labium (Figs. 6 h, 6i, 6j). Base of glossa expanded (reaching at least half of paraglossa); inner and outer margin respectively with around 20 (ir in Fig. 6 j) and 15 (or in Fig. 6 j) pointed setae increasing in length apically; ventral surface scattered with few short setae at base. Paraglossa dorsally with arc of 4 setae close to inner margin (dia in Fig. 6 j); ventrally with arc of 8–10 setae close to inner margin (via in Fig. 6 j). Labial palp with segment I 0.9 × length of segments II and III combined; segment II dorsally with oblique row of 8 setae; segment III with distal margin slightly truncate; inner margin distinctly shorter than outer margin; ventrally covered with around 20 long setae; setae on inner margin serrate.
Thorax. Hind wing pad. Present.
Fore leg (Fig. 7 d). Ratio 1.7:1(0.8mm):1:0.2. Femur. Length about 4.5 × maximum width; outer margin with row of 6–11 clavate setae (Fig. 7 e); submarginal setae absent; anterior surface and inner margin with around 25 spine-like setae; posterior surface with around 15 scattered setae near inner margin; distal projection exceeding apex of femur (Fig. 7 a), 0.4 × width of femur, apically with 3 clavate setae. Tibia. Outer margin with few simple setae; inner margin with two serrate setae on apex; subtending bristle blunt, clavate, extending apex of tibia (Fig. 7 f). Tarsus. Inner margin with row of 12–17+1 spine-like short setae. Tarsal claw. 0.2 × length of tarsus.
Mid and hind legs (Figs. 7 b, 7c). Similar to fore leg, except for subapical projections of femur less developed and type of setae on inner apex of tibia on (simple instead of serrate).
Abdomen. Terga (Fig. 7 g). Spines present on posterior margins of segments III–X; larger spines on posterior margin of tergum IV 3.2 × longer than wide.
Sterna. Spines present on posterior margin of segments IV–IX (segment III rarely with scarce spines).
Gills (Figs. 7 h, 7i). Outer margin serrated on distal 1/4; inner margin slightly serrated; medial rib present; few secondary tracheae extending from main trunk to inner and outer margins. Gill I about 3/4 length of segment II; truncate. Gill IV 1 1/2 length of segment V, asymmetric, broad at middle. Gill VII about 1 1/2 length of segment VIII.
Paraproct (Fig. 7 j). With 12–14 marginal spines.
Cercus. Without large spines.
Terminal filament. Without large spines.
Male and female imago. Unknown.
Etymology. After the type-locality, River Aiuruoca.
Distribution. Southeastern Brazil, Minas Gerais State, Serra da Mantiqueira, Parque Nacional de Itatiaia (Fig. 30).
Type-material. HOLOTYPE. Nymph (on a single slide), BRAZIL, Minas Gerais, Itamonte, Rio Aiuruoca, S 22°18'31.30" W 44°42'7.30", 1440 m.a.s.l., 07/ix/2000, Nessimian, JL, col. (CZNC). PARATYPES. 15 nymphs (three on slides), same data as holotype (5 CZNC, 5 UFRJ, 3 MZL, 2 IBN).
Additional material. 7 nymphs, BRAZIL, Rio de Janeiro, Parque Nacional de Itatiaia, Abrigo Rebouças, S 22°23'6.20" W 44°40'43.40", 11/xi/1978, Dos Santos NO and Pereira SM, col. (CZNC). 1 nymph, BRAZIL, Rio de Janeiro, Itatiaia, Parque Nacional de Itatiaia, Cachoeira da Maromba, S 22°25'46.10" W 44°37'9.80", 15/viii/1998, Salles FF and Franscischetti CN, col. (CZNC). 15 nymphs, BRAZIL, Rio de Janeiro, Itatiaia, primeiro riacho, S 22°22'39.90" W 44°41'36.80", 11/ix/1998, Salles FF, col. (UFRJ). 10 nymphs, BRAZIL, Minas Gerais, Itamonte, Rio Aiuruoca, S 22°18'31.30" W 44°42'7.30", 12/ix/1998, Salles FF, col. 57 nymphs, BRAZIL, Minas Gerais, Itamonte, Rio Auiruoca, S 22°18'31.30" W 44°42'7.30", 07/ix/2000, Salles, F.F., col. (UFRJ). 34 nymphs, BRAZIL, Minas Gerais, Itamonte, Rio Aiuruoca, S 22°18'31.30" W 44°42'7.30", 08/ix/2000, Assis JCF, Oliveira ALH and Passos MI, col. (CZNC).
description: Published as part of Salles, F. F., Massariol, F. C., Angeli, K. B., Lima, M. M., Gattolliat, L. & Sartori, M., 2015, Revealing the diversity of Cloeodes Traver, 1938 (Ephemeroptera: Baetidae) in the Neotropics: description of eleven new species from Brazilian mountain ranges, pp. 1-50 in Zootaxa 4020 (1) on pages 3-4, DOI: 10.11646/zootaxa.4020.1.1, http://zenodo.org/record/289588