Cloeodes amantykyra Angeli, Massariol & Salles

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 : 8-15

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

Figures 1 b, 5a, 5b, 8, 9, 10, 30.

Diagnoses. NYMPH. A) Large body size (> 7.0 mm); B) Body color pattern with distinct darker marks on abdominal terga ( Fig. 1 b); C) Labrum, medially, with two long setae ( Fig. 8 a); D) Maxillary palp as long as length of galea-lacinia ( Fig. 8 f); E) Inner margin of labial palp segment III subequal to outer margin ( Fig. 8 g); F) Distal projection of fore femur long (distinctly exceeding apex of femur, Figs. 9 a, 9d); G) Gills without medial rib ( Fig. 9 h); H) Terga with spines present on posterior margins of segments I–X, larger spines on posterior margin 2.7 × longer than wide ( Fig. 9 g). MALE IMAGO. A) Intercalary veins on fore wing approximately 0.4 × the width of corresponding space ( Fig. 10 a); B) Hind wing present, with two longitudinal veins ( Figs. 10 b, 10c); C) Terga III −VII with median dark brown irregular marks and sterna II −VII with antero-lateral dark brown stripe ( Fig. 5 a).

Nymph. Lengths. Body: 7.0–10.0 mm; cerci: 3.0– 3.5 mm; terminal filament: 3.0– 3.5 mm; antenna: 2.0–3.0 mm.

Coloration ( Fig. 1 b). General coloration yellowish-white. Head with vertex light brown; frons with dark brown stripe extending lateral ocellus and almost reaching base of clipeus. Thorax yellowish-white washed with light brown. Fore leg, coxa yellowish-white washed with dark brown on outer margin; femur with central and subapical brownish band; tibia washed with light brown; tarsus with outer half of dorsal surface dark brown. Abdomen with segments I–IV with submedial triangular to roundish brown mark; segments V, VI and X almost completely washed with brown. Caudal filaments brown, darker toward apex except for a yellowish subapical band.

Head. Labrum ( Figs. 8 a, 8b). Length about 0.6 × maximum width; dorsal arc with 2 medial long setae; ventrally with 5–12 spine-like setae near lateral margin.

Hypopharynx. As in Fig. 8 c.

Mandibles ( Figs. 8 d, 8e). Denticles of left mola constricted at base (as in fig. 6f).

Maxilla ( Fig. 8 f). Medially with 1 spine-like seta + 8 apically pointed setae. Maxillary palp reaching apex of galea-lacinia; palp segment II 1.4 × length of segment I.

Labium ( Fig. 8 g). Base of glossa expanded (reaching at least half of paraglossa); inner and outer margin respectively with around 20 and 12 spine-like setae increasing in length apically; ventral surface scattered with few short setae at base. Paraglossa dorsally with arc of 3 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 6–7 setae; segment III with distal margin slightly truncate; inner margin subequal to outer margin; ventrally covered with around 30 apically pointed setae; setae on inner margin serrate.

Thorax. Hind wing pad. Present.

Fore leg ( Fig. 9 d). Ratio 1.8:1(0.6mm):1.2:0.3. Femur. Length about 4 × maximum width; outer margin with row of 14 clavate setae (length of setae about 0.1 × maximum width of femur) ( Fig. 9 e); submarginal setae absent; anterior surface and inner margin with around 35 simple, spine-like tiny setae; posterior surface with around 40 scattered setae near inner margin; distal projection exceeding apex of femur ( Fig. 9 a), 0.2 × width of femur, apically with 2 clavate setae ( Fig. 9 a). Tibia. Outer margin with many simple setae; inner margin with two serrate setae on apex; subtending bristle blunt, clavate, extending apex of tibia ( Fig. 9 f). Tarsus ventrally with row of 14+1 spine-like setae. Tarsal claw. 0.3 × length of tarsus.

Mid and hind legs ( Figs. 9 b, 9c). Similar to fore leg, except for the lower number of setae on anterior surface, subapical projections of femur less developed and type of setae on inner apex of tibia (simple instead of serrate).

Abdomen. Terga ( Fig. 9 g). With spines present on posterior margins of segments I–X; larger spines on posterior margin 2.7 × longer than wide.

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

Gills ( Figs. 9 h, 9i). Outer margin serrated on distal 1/4; inner margin slightly serrated; medial rib absent; tracheae extending from main trunk to inner and outer margins. Gill I about 1/2 length of segment II, oval. Gill IV 1 1/2 length of segment V, asymmetric, broad at middle ( Fig. 9 h). Gill VII about 1 1/2 length of segment VIII.

Paraproct ( Fig. 9 j). With 12–14 spines.

Cercus . With large spines on every two-segments.

Terminal filament. Without large spines.

Male imago. Lengths. Body: 7.0 mm; fore wing: 7.0 mm; hind wing: 1.2 mm; caudal filaments: broken.

Coloration ( Figs. 5 a, 5b). Head yellowish washed with brown. Turbinate portion of compound eye orange dorsally, stalk dark orange ( Figs. 5 a, 5b). Antenna brown. Pro, meso and metanotum dark brown except for scutellum, lighter. Mid leg: Coxa brown; trocanter, femur, tibia and tarsus yellowish white, apex of tibia orangish. Fore wing hyaline, except between C and R1 opaque. Longitudinal veins brown except for CuP and A, yellowish, cross veins between C and MA1 dark brown, others light brown to yellowish. Point where C meets Sc with dark brown mark. Hind wing hyaline, veins brown. Terga ( Fig. 5 a). Light brown. Segment I dark brown. Segment III −VII with median dark brown irregular marks. Segments VIII −X brown. Tracheation dark brown ( Fig. 5 a). Sterna . Light brown. Segments II −VII with antero-lateral dark brown stripe. Segments VIII −IX with posteromedial brown mark. Forceps brown, lighter toward apex.

Head. Dorsal portion of turbinate eyes oblong ( Fig. 5 b); length 1.3 × width; stalk height 0.6 × width of dorsal portion; inner margins parallel, close to each other.

Thorax. Anteronotal protuberance rounded ( Fig. 5 a).

Metascutellar protuberance poorly developed ( Fig. 5 a).

Legs. Mid leg: tibia 0.9 × length of femur; tarsi 0.7 × length of femur. Fore and hind legs broken, missing.

Fore wing ( Fig. 10 a) Stigmatic area with 4 cross veins touching Sc and 1 vein not touching Sc. Marginal intercalaries paired, except between veins R1-R2 and ICu1-ICu2 single and between veins Sc-R1 and ICu2-A absent; between IMA and CuP intercalating one long/one short, one short/one long; length of each intercalary vein 0.4 and 0.3 × distance between adjacent longitudinal veins; length of fore wing about 2.6 × width.

Hind wing ( Figs. 10 b, 10c) present, with 2 complete longitudinal veins; costal process hooked, located on basal third.

Abdomen. Genitalia ( Fig. 10 d). Forceps segment I 0.6 × length of segment II, wider than segment II, margins parallel. Forceps segment III oval, 1.1 × as long as wide; 0.1 × length of segments I and II combined. Posterior margin of subgenital plate rounded.

Female imago. Unknown.

Etymology. From the tupi language words amana (rain) and tykyra (drop). An allusion to the type-locality of the new species, Serra da Mantiqueira, whose name is also derived from these two words.

Distribution ( Fig. 30 ). Southeastern Brazil, São Paulo State, Serra da Mantiqueira, Parque Estadual de Campos do Jordão.

Ontogenetic stage association. Rearing.

Type-material. HOLOTYPE. Male imago (with corresponding nymphal exuvia); wings, mid leg, genitalia, and exuvia on four slides (two with wings, one with genitalia, one with dissected nymph), BRAZIL, São Paulo, Campos do Jordão, Parque Estadual de Campos do Jordão, Córrego Galharada, S 22°41’35.7” W 45°27’38.6”, 1512 m.a.s.l., 27–28/iii/2010, Brito PV and Salles FF, col. (CZNC). PARATYPES. Male imago with corresponding nymphal exuvia (CZNC) and 27 nymphs (two on slides), same data as holotype (20 CZNC, 4 MZL, 3 IBN).

Figures

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

FIGURE 5. Habitus, imagos. a. Cloeodes amantykyra, male (l. v.). b. Cloeodes amantykyra, male, head (d. v.). c. Cloeodes xyrognathos, male (d. v.). d. Cloeodes xyrognathos, female (d. v.).

FIGURE 8. Cloeodes amantykyra, nymph. a. Labrum (left d. v., right v. v.). b. Details of submarginal row of ventral setae. c. Hypopharynx (d. v.). d. Right mandible (d. v.). e. Left mandible (d. v.). f. Maxilla (v. v.). g. Labium (left d. v., right v. v.). h. Detail of segment III of labial palp (v. v.).

FIGURE 9. Cloeodes amantykyra, nymph. a. Fore femur, apex projection. b. Mid femur, apex projection. c. Hind femur, apex projection. d. Fore leg, anterior surface. e. Detail of setae on dorsal margin. f. Apex of fore tibia. g. Posterior margin of segment IV. h. Gill IV. i. Detail of gill margin. j. Paraproct (v. v.).

FIGURE 10. Cloeodes amantykyra, male imago. a. Fore wing. b. Hind wing. c. Hind wing (enlarged). d. Genitalia (fbforceps base, fsi to fsiii—forceps segment I to III).

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.).