Cloeodes boldrinii 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 : 19-22

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

Figures 1 d, 13, 14, 30.

Diagnoses. NYMPH. A) Large body size (> 7.0 mm); B) Body color pattern with distinct darker marks on abdominal terga ( Fig. 1 d); C) Labrum, medially, with single long seta ( Fig. 13 a); D) Maxillary palp short (around ¾ length of galea-lacinia, Fig. 13 d); E) Inner margin of labial palp segment III subequal to outer margin ( Fig. 13 e); F) Distal projection of fore femur long (distinctly exceeding apex of femur, Figs. 14 a, 14b); G) Gills with medial rib ( Fig. 14 e)

Nymph. Lengths. Body: 9.0– 9.5 mm; cerci: 4.0 mm; terminal filament: 4.5 mm; antenna: 3.5 mm.

Coloration ( Fig. 1 d). General coloration yellowish-white profusely washed with dark brown. Head uniformly washed with brown, except below median ocellus. Legs yellowish-brown; tarsus darker. Terga. Segments IV and VIII less pigmented; segment IX with medial less pigmented area; segments II, III and VII sometimes less pigmented, but never as in segments IV and VIII; segments I–IX medially with a longitudinal unpigmented stripe. Sterna as in terga. Filaments yellowish-brown with a subdistal yellowish band.

Head. Labrum ( Fig. 13 a). Length about 0.7 × maximum width; dorsal arc with single medial seta; ventrally with 8–10 spine-like setae near lateral margin.

Mandibles ( Figs. 13 b, 13c). Denticles of left mola constricted at base (as in fig. 6f).

Maxilla ( Fig. 13 d). Medially with 1 spine-like seta + 9–10 apically pointed setae. Maxillary palp 3/4 length of galea-lacinia; palp segment II 1.3 × length of segment I.

Labium ( Fig. 13 e). Base of glossa expanded (reaching at least half of paraglossa); inner and outer margin respectively with around 20 and 15 spine-like 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; ventrally with arc of 11 setae close to inner margin. Labial palp with segment I 1.0 × length of segments II and III combined; segment II dorsally with oblique row of 6–7 setae; segment III with distal margin slightly truncate; inner margin subequal to outer margin outer margin; ventrally covered with around 60 long setae; setae on inner margin serrate.

Thorax. Hind wing pad. Present

Fore leg ( Fig. 14 a). Ratio 1.8:1(1.0mm):1.0:0.2. Femur. Length about 5 × maximum width; outer margin with row of 11–12 clavate setae (length of setae about 0.1 × maximum width of femur); submarginal setae absent; anterior surface and inner margin with around 35 spine-like setae; posterior surface with around 25 minute scattered setae near inner margin; distal projection exceeding apex of femur ( Fig. 14 b), 0.2 × width of femur, apically with 4 clavate setae. Tibia. Outer margin with many simple setae; inner margin with two serrate setae on apex; subtending bristle blunt, not extending apex of tibia ( Fig. 14 c). Tarsus ventrally with row of 16+1 spine-like setae. Tarsal claw. 0.2 × length of tarsus.

Mid and hind legs. Similar to fore leg, except for the lower number of setae on anterior surface of femur, subapical projections of femur less developed length of femoral projection and type of setae on inner apex of tibia (simple instead of serrate).

Abdomen. Terga ( Fig. 14 d). With spines present on posterior margin of segments II–X; larger spines on posterior margin 3.0 × longer than wide.

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

Gills ( Fig. 14 e). Outer margin serrated on distal 1/4; medial rib present; tracheae extending from main trunk to inner and outer margins. Gill I subequal in length to segment II, oval. Gill IV 1 1/2 length of segment V, asymmetric, broad at middle. Gill VII 1 1/2 length of segment VIII.

Paraproct ( Fig. 14 f). With around 15 spines.

Cercus . With large spines on every two-segments.

Terminal filament. With spines on every four segments.

Male and female imago. Unknown.

Etymology. In honor of Dr. Rafael Boldrini, collector of the material from Santa Catarina (including that new species), friend and mayfly specialist.

Distribution ( Fig. 30 ). Southern Brazil, Santa Catarina State, Serra Geral.

Type-material. HOLOTYPE. Nymph (on two slides, one with mouth parts, legs and gills, one with abdomen), BRAZIL, Santa Catarina, Urubici, Cachoeira Veu de noiva, Perto do Morro da Aeronautica, S 28°04’34.5” W 49°31’06.9”, 1346 m.a.s.l., 02/x/2011, Boldrini R, col. (CZNC). PARATYPES: 14 nymphs (one on slide), same data as holotype (7 CZNC, 4 INPA, 3 MZL).

Figures

FIGURE 1. Habitus, nymphs, dorsal view. a. Cloeodes aiuruoca. b. Cloeodes amantykyra. c. Cloeodes atlanticus. d. Cloeodes boldrinii.

FIGURE 13. Cloeodes boldrinii, nymph. a. Labrum (d. v.). b. Right mandible (d. v.). c. Left mandible (d. v.). d. Maxilla (v. v.). e. Labium (v. v.).

FIGURE 14. Cloeodes boldrinii, 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 (d. 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.).