Cloeodes lucifer Salles, Massariol & Angeli

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, Zootaxa 4020 (1), pp. 1-50 : 28

Cloeodes lucifer Salles, Massariol & Angeli , sp. nov.

Figures 2 c, 4c, 19, 20, 30, 31b.

Diagnoses. NYMPH. A) Small body size (<5.0 mm); B) Body color pattern almost uniform, except for tergum I, bright yellow, and terga IX and X, blackish ( Fig. 2 c); C) Labrum, medially, with single long seta ( Fig. 19 a); D) Maxillary palp as long as length of galea-lacinia ( Fig. 19 d); E) Inner margin of labial palp segment III distinctly shorter than outer margin ( Fig. 19 e); F) Distal projection of fore femur short (not exceeding apex of femur, Figs. 20 a, 20b); G) Gills without medial rib, pointed at apex ( Fig. 20 e).

Nymph. Lengths. Body: 4.4 mm; cerci: 2.2 mm; terminal filament: 2.2 mm; antenna: 2.2 mm.

Coloration ( Figs. 2 c, 4c). General coloration gray. Head yellowish-white, slightly washed with gray. Legs whitish. Terga. Segment I bright yellow; segments IX and X blackish. Sterna whitish; segments VI–VIII slightly washed with gray; segment IX heavily washed with gray. Filaments whitish.

Head. Labrum ( Fig. 19 a). Length about 0.7 × maximum width; dorsal arc with single medial seta; ventrally with 8–9 spine-like setae near lateral margin.

Mandibles ( Figs. 19 b, 19c). Denticles of left mola not constricted.

Maxilla ( Fig. 19 d). Medially with 1 spine-like seta + 6 apically pointed setae. Maxillary palp reaching apex of galea-lacinia; palp segment II 2.3 × length of segment I.

Labium ( Fig. 19 e). Base of glossa poorly expanded (reaching less than 1/3 of paraglossa); inner and outer margin respectively with around 20 and 18 spine-like setae increasing in length apically; ventral surface scattered with apically pointed, fine, simple setae at base. Paraglossa dorsally with arc of 5 setae close to inner margin; ventrally with arc of 8–10 setae close to inner margin. Labial palp with segment I 0.8 × length of segments II and III combined; segment II dorsally with oblique row of 5–6 setae; segment III with distal margin slightly truncate; inner margin distinctly shorter than outer margin; ventrally covered with around 15 long setae ( Fig. 19 e); setae on inner margin simple.

Thorax. Hind wing pad. Present.

Fore leg ( Fig. 20 a). Ratio 1.7:1(0.7mm):1.1:0.3. Femur. Length about 5.5 × maximum width; outer margin with row of 12–14 clavate setae (length of setae about 0.1 × maximum width of femur); submarginal setae absent; anterior surface and inner margin with around 20 spine-like setae; posterior surface with around 5 scattered setae near inner margin; apex slightly projected ( Fig. 20 b), apically with 2 clavate setae. Tibia. Outer margin with few simple setae; inner margin with two serrate setae on apex; subtending bristle blunt, extending apex of tibia ( Fig. 20 c). Tarsus. Inner margin with row of 20 spine-like setae. Tarsal claw. 0.4 × length of tarsus.

Mid and hind legs. Similar to fore leg, except for the lower number of setae on anterior surface of femur.

Abdomen. Terga ( Fig. 20 d). With spines present on posterior margin of segments II–X; larger spines on posterior margin 2.4 × longer than wide.

Sterna . With spines present on posterior margin of segments V–IX.

Gills ( Fig. 20 e). Outer margin smooth; inner margin smooth; medial rib absent; tracheae extending from main trunk to inner and outer margins. Gill I reaching apex of segment III, asymmetrically lanceolate. Gill IV reaching distal margin of segment V, asymmetric, broad at middle, pointed at apex. Gill VII extending apex of segment X.

Paraproct ( Fig. 20 f). With around 18 spines.

Cercus . With large spines on every four segments.

Terminal filament. Without large spines.

Male and female imago. Unknown.

Etymology. Lucifer , light-bringing in Latin. An allusion to the bright yellow coloration of abdominal terga I, which seems to be lighten.

Distribution ( Fig. 30 ). Northeastern Brazil, Bahia State, Chapada Diamantina (part of Serra do Espinhaço), Parque Nacional da Chapada Diamantina.

Type-material. HOLOTYPE. Nymph (on a single slide), BRAZIL, Bahia, Chapada Diamantina, Parque Nacional da Chapada Diamantina, trilha para a Cachoeira da Fumaça, S 12°36'12.4" W 41°27'58.8", 1317 m.a.s.l., 11/v/2014, Salles FF and Nascimento JMC, col. (CZNC). PARATYPES: 12 nymphs (one on slides), same data as holotype (6 CZNC, 3 INPA, 3 IBN); 20 nymphs, sama data as holotype, except for 02/ix/2015, Salles FF, Paresque R, Monjardim M, Barbosa T, col. (10 CZNC, 10 MZL).

Figures

FIGURE 2. Habitus, nymphs, dorsal view. a. Cloeodes guara. b. Cloeodes ioachimi. c. Cloeodes lucifer. d. Cloeodes magnus.

FIGURE 19. Cloeodes lucifer, nymph. a. Labrum (left v. v., right d. v.). b. Right mandible (d. v.). c. Left mandible (d. v.). d. Maxilla (v. v.). e. Labium (v. v.).

FIGURE 20. Cloeodes lucifer, nymph. a. Fore leg, anterior surface. b. Fore femur, apex projection. c. Apex of fore tibia. d. Posterior margin of segment IV. e. Gill IV. f. Paraproct (v. v.).

FIGURE 30. Political map of South America (showing Brazilian states) with details of the distribution of the new species of Cloeodes according to the altitude (white, from 0 to 400 m. a. s. l.; light gray from 400 to 800 m. a. s. l.; dark gray from 800 to 1200 m. a. s. l.; and black, above 1200 m. a. s. l.).