Callibaetis jocosus Navás, 1912

Cruz, Paulo Vilela, Salles, Frederico Falcão & Hamada, Neusa, 2013, Callibaetis Eaton (Ephemeroptera: Baetidae) from Brazil, Journal of Natural History (J. Nat. Hist.) 48 (11 - 12), pp. 591-660 : 630-638

publication ID	https://doi.org/ 10.1080/00222933.2013.791883
persistent identifier	https://treatment.plazi.org/id/038F4646-FFB9-084B-FE73-D754FC9FFDD1
treatment provided by	Felipe
scientific name	Callibaetis jocosus Navás
status

Treatment

Callibaetis jocosus Navás View in CoL

( Figures 17–20 View Figure 17 View Figure 18 View Figure 19 View Figure 20 )

Callibaetis jocosa Navás, 1912, p. 195 .

Callibaetis stictogaster Navás, 1915b, p. 121 .

Callibaetis jaffueli Navás, 1918, p. 244 .

Callibaetis spegazzinus Navás, 1920c, p. 36 .

Callibaetis rimatus Navás, 1933, p. 113 .

Callibaetis jocosus Gillies, 1990 View in CoL ; Domínguez et al., 2006, p. 115.

Known stages: I ♀ ♂, N

Diagnosis

Male imago. (1) Dorsal portion of tubinate eyes oval ( Figure 17A View Figure 17 ); (2) forewing with three transversal bands, apical third pigmented, base without pigmentation ( Figure 17D View Figure 17 ); (3) marginal intercalary veins paired ( Figure 17D View Figure 17 ); (4) hind wing hyaline, base with small reddish brown mark ( Figure 17E View Figure 17 ); (5) costal process of hind wing basally with reddish mark ( Figure 17E View Figure 17 ); (6) abdominal sterna with many reddish spots, sterna II to IX with one anterolaterally dark mark and one reddish medial mark on anterior margin; (7) forceps segment I wide at base ( Figure 17C View Figure 17 ).

Female imago. (1) Membrane of forewing washed with black, hyaline around cross veins, area between C, Sc and R 1 veins darker ( Figure 17G View Figure 17 ); (2) marginal intercalary veins paired ( Figure 17G View Figure 17 ); (3) hind wing hyaline, base with red mark ( Figure 17H View Figure 17 ); (4) costal process of hind wing basally with black mark, wing base with red mark ( Figure 17H View Figure 17 ); (5) abdominal terga III, V and VII with V-shape marks sublaterally and

laterally ( Figure 17F View Figure 17 ); (6) abdominal sterna I to IX washed with red spots, reddish black mark anterolaterally ( Figure 17I View Figure 17 ).

Mature nymph. (1) Antenna with spines; (2) distal margin of labrum with small medial emargination ( Figure 18B View Figure 18 ); (3) distal margin of labrum medially with robust bipectinate setae ( Figure 18B View Figure 18 ); (4) maxillary palp reaching apex of galea-lacinia ( Figure 18F View Figure 18 ); (5) glossa subequal in length to paraglossa; (6) labial palp with spine-like setae; (7) anterior surface of forefemur with one row of robust trifid and bifid spine-like setae near ventral margin ( Figure 19B View Figure 19 ); (8) fore tarsus ventrally with one row of trifid spine-like setae, one row of long robust and bipectinate setae; (9) hind femur with two rows of curved and pectinate setae, the middle row directed dorsally and the row near ventral margin directed ventrally ( Figure 19F View Figure 19 ); (10) hind claw similar to fore claw; (11) gills IV with two folds ( Figure 20F View Figure 20 ); (12) cerci with spines on all segments ( Figure 20I View Figure 20 ); (13) terminal filament with spines on all segments ( Figure 20J View Figure 20 ).

Redescription

Male imago. Length: body, 7.4 mm; cercus, 14.4 mm; forewing, 7 mm; hind wing, 1.2 mm; antenna, 1 mm; tibia I, 1.9 mm; tibia II, 1.3 mm; tibia III, 1.2 mm. (n = 2) Head ( Figure 17A, B View Figure 17 ). Coloration dark brown. Turbinate portion of compound eyes reddish dorsally, with white edges; laterally with basal half reddish, apical half white. Antenna. Scape and pedicel dark brown, flagellum light brown. Dorsal portion of turbinate eyes oval; length 4.1 × width; stalk height 0.6 × dorsal portion height; inner margins parallel, not reaching each other. Thorax ( Figure 17A, B View Figure 17 ). Anteronotal protuberance light brown, laterally white, submedially brown; mesoscutum and submesoscutum light brown; posterior scutal protuberance brown; scutellum light brown. Anteronotal and metascutellar protuberance rounded. Legs: Femora I, II and III with longitudinal black line on external surface, internal and external surface with red mark on apical third, apex with black mark ventrally; tibia I with black mark ventrally on apex, tibiae II and III with two black marks on base and apex; tarsus I without pigmentation, tarsi II and III with brown apex; claws light brown. Leg I: tibia 1.3 × length of femur; tarsus 1.5 × length of femur. Leg III: tibia 0.7 × length of femur; tarsus 0.3 × length of femur. Wings. Forewing ( Figure 17D View Figure 17 ) with three transversal bands, apical third pigmented, base without pigmentation; around cross veins hyaline; veins light brown; stigmatic area with eight or nine cross veins touching subcostal vein and one or two veins not touching subcostal vein; marginal intercalary veins paired, except between veins ICu 2 and A; length of each intercalary vein 0.5–0.8 × distance between adjacent longitudinal veins; length of forewing about 2.5 × width. Hind wing ( Figure 17E View Figure 17 ) hyaline, base with small reddish brown mark, costal process base with reddish mark; with 11 to 14 cross veins; costal process compound. Abdomen. Terga brown, terga II, III, V and VII laterally reddish brown; terga VIII and IX with two longitudinal brown marks submedially; terga II and IX with one red mark medially on anterior margin; tracheation black. Sterna segments I to VI light brown, washed with reddish spots, segments VII to IX whitish washed with reddish spots; segments II to IX with one anterolateral dark mark and one reddish medial mark on anterior margin; submedially with two light brown marks. Caudal filaments white with light brown mark on base and apex of each segment. Genitalia ( Figure 17C View Figure 17 ) brown. Forceps segment I wide at base; 0.5 × length of segment II; distance between base of forceps 0.3 × distance between lateral margins of forceps. Forceps segment III oval, 1.6 × as long as wide; 0.2 × length of segment II. Posterior margin of styliger plate without medial projection.

Female imago. Length: body, 9 mm; forewing, 8 mm; hind wing, 1.3 mm; antenna, 0.9 mm; tibia I, 1.3 mm; tibia II, 1.1 mm; tibia III, 1.3 mm. (n = 2) Head ( Figure 17F View Figure 17 ). Coloration reddish brown; compound eyes black with longitudinal line brown. Antenna with apex of scape ventrally reddish brown; pedicel reddish brown with white base; flagellum reddish brown. Thorax ( Figure 17F, I View Figure 17 ). Anteronotal protuberance light brown, laterally white; mesoscutum and submesoscutum light brown, white washed; posterior scutal protuberance black; scutellum white. Anteronotal protuberance rounded. Metascutellar protuberance rounded. Legs: Femora I, II and III with longitudinal black line on external surface, external and internal surface with red mark on apical third, apex with black mark ventrally; tibiae I, II and III with two black marks on base and one on apex. Leg I: tibia 0.9 × length of femur. Leg II: tibia 1 × length of femur; tarsus 0.5 × length of femur. Leg III: tibia 0.7 × length of femur; tarsus 0.4 × length of femur. Wings. Forewing ( Figure 17G View Figure 17 ) with membrane washed with black, around cross veins hyaline, C, Sc and R 1 veins areas darker; veins brown; stigmatic area with eight or nine cross veins touching subcostal vein and zero or one not; marginal intercalary veins paired, except between veins ICu 1 and A; length of each intercalary vein 0.3–0.5 × distance between adjacent longitudinal veins; length of forewing about 2.4 × width. Hind wing ( Figure 17H View Figure 17 ) costal process base with black mark, wing base with red mark; with nine cross veins; costal process compound. Abdomen ( Figure 17F, I View Figure 17 ). Terga washed with red spots, terga II to IX with one red medial mark; segments III, V and VII with V-shaped mark sublaterally and laterally. Tracheation black. Sterna segments I to IX washed with red spots, one reddish black marks anterolaterally, submedially with two light brown marks. Caudal filaments white, reddish on base and apex of each segment.

Description

Mature nymph. Length: body, 6.7 mm; cercus, 6 mm; terminal filament, 3.6 mm; antenna, 7.2 mm. (n = 2) Head. Coloration: dark brown. Turbinate portion of male compound eyes reddish. Antenna ( Figure 18A View Figure 18 ) yellowish brown with spines and fine, simple setae on apex of each segment. Labrum ( Figure 18B View Figure 18 ). Distal margin with small medial emargination; length about 0.6 × maximum width; distal margin slightly rounded; distal and anterolateral margin with long and simple setae; distal margin medially with robust bipectinate setae; dorsally with long, fine, simple setae scattered over surface; submarginal row of setae absent; ventrally with short spine-like setae near lateral margin and many long, simple setae near anterolateral margin. Right mandible ( Figure 18C View Figure 18 ) with 4 + 4 denticles; prostheca slender and bifurcated, inner lobe shorter than outer; margin between prostheca and mola convex with short projection; tuft of spine-like setae at base of mola present. Denticles of mola not constricted. Tuft of setae at apex of mola present; lateral margins slightly convex; basal half with short, fine, simple setae and pores scattered over dorsal surface. Left mandible ( Figure 18D View Figure 18 ) with 4 + 4 denticles; prostheca robust and bifid; margin between prostheca and mola straight; tuft of spine-like setae at base of mola present; subtriangular process narrow, at same level as area between prostheca and mola; denticles of mola not constricted; tuft of setae at apex of mola present; lateral margins slightly convex; basal half with short, fine, simple setae and pores scattered over dorsal surface. Hypopharynx ( Figure 18E View Figure 18 ). Lingua with three lobes in distal margin; superlingua not expanded; short, fine, simple setae scattered over distal margin of lingua and superlingua. Maxilla ( Figure 18F View Figure 18 ). First denti-setae with small spines on outer margin, others bifid. Medial protuberance of galea with 1 + 4 spine-like setae. Maxillary palp reaching apex of galea-lacinia; palp segment II 1 × length of segment I; outer margin of segment I with robust and pointed setae, apex of inner margin with seven or eight pointed setae, dorsal and ventral surface with pores; segment II with short pointed setae in inner margin, outer margin with long, fine and simple setae. Labium ( Figure 18G View Figure 18 ). Glossa with regular width along entire length and subequal in length to paraglossa; inner margin with 14 spine-like setae increasing in length apically; apex with three to five long spine-like setae; outer margin with many long spine-like setae. Dorsally with many long spine-like setae. Ventral surface scattered with few long, fine and simple setae, inner margin with one row of short spine-like setae. Paraglossa subrectangular, curved only at apex; apex with two or three long, robust and simple setae. Ventrally with one row of spine-like setae near inner margin. Labial palp with segment I 0.8 × length of segments II and III combined; segment I dorsally covered with micropores, robust spine-like setae near outer margin; ventrally covered with micropores, robust spine-like setae near inner margin; surfaces covered by long, fine and simple setae; segment II without distomedial protuberance; inner and outer margin respectively with eight or nine short spine-like setae and bare; dorsally with row of six short spine-like setae; segment III concave; length 1.3 × width; covered with spine-like simple setae along margins and fine, simple setae, scattered over outer surface. Thorax. Foreleg ( Figure 19A–D View Figure 19 ). Ratio of foreleg 1.5: (0.7 mm): 0.9: 0.4. Forefemur with black mark on base and other on apical third, tibia with black mark on base and apex. Length about 2.7 × maximum width; dorsally with few short spine-like setae, apex with two robust spine-like setae; length of setae about 0.1 × maximum width of femur; ventrally with few long, fine and simple setae. Anterior surface with robust spine-like setae near dorsal margin and one row of robust trifid and bifid spine-like setae near ventral margin. Tibia. Dorsally bare; ventrally with one row of short and long spine-like setae. Anterior surface with robust and short spine-like setae, one row of robust and long bipectinate setae near ventral margin. Tarsus. Dorsally abundant short, fine, simple setae; ventrally with one row of trifid spine-like setae, one row of long robust and bipectinate setae, surfaces with long, robust and bipectinate setae near ventral margin. Tarsal claw with two rows of denticles increasing in size distally. Mid femur with two rows of curved and pectinated setae directed ventrally, near ventral margin and medially; fore and mid tibiae similar; mid tarsus with one row of long and robust setae ventrally, surfaces with long, robust and bipectinate setae. Hind leg ( Figure 19E–H View Figure 19 ). Hind femur with two rows of curved and pectinated setae, the middle row directed dorsally and the row near ventral margin directed ventrally; hind tibia like fore, although with more long, robust and bipectinate setae; hind tarsus ventrally with one row of long and robust spine-like setae, surfaces with long, robust and bipectinate spine-like setae. Abdomen ( Figure 20A View Figure 20 ). Segments II, III and VII dorsally black, ventrally with longitudinal lateral red marks. Terga. Surface creased. Posterior margin with regular spines ( Figure 20B View Figure 20 ). Sterna. Surface with scattered fine, simple setae. Gills ( Figure 20C–G View Figure 20 ). Margin smooth; trachea black pigmented, extending from main trunk to outer margin. Gill I subequal in length to segment II, with three folds. Gill IV as long as length of segments V to VI combined, with two folds. Gill VII subequal in length to segment VIII, with one fold. Paraproct ( Figure 20H View Figure 20 ) with 37–45 marginal spines; surface with micropores and short fine, simple setae; posterolateral extension with marginal spines. Terminal filament ( Figure 20J View Figure 20 ) blackish apex on each four segments; posterior margin with spines on all segments. Cerci ( Figure 20I View Figure 20 ) with spines on all segments.

Material examined

Female imago, photograph of the type of C. stictogaster from Museo de Ciencias Naturales de La Plata, 15 / x / 1913. Male imago, type photograph of C. jocosus from Museu de Zoologia de Barcelona , 8 / iv / 1910. Female imago (reared), two male imagos (reared), BRAZIL, São Paulo, Jundiaí , Serra do Japií , Lake near two houses, (23 ◦ 14 ′ 15.1 ′′ S, 046 ◦ 56 ′ 26.2 ′′ W), 14 / vii / 2009, 1043 m, Brito, P. col. ( INPA). Two male imagos, one female imago (reared) and two nymphs, BRAZIL, São Paulo, Jundiaí , Serra do Japií , Lake near two houses, (23 ◦ 14 ′ 15.1 ′′ S, 046 ◦ 56 ′ 26.2 ′′ W), 15 / ix / 2009, Brito, P. col. ( INPA) GoogleMaps .