Callibaetis (Aiso) calophenigyn , Cruz, Paulo Vilela, Salles, Frederico Falcão & Hamada, Neusa, 2017

Cruz, Paulo Vilela, Salles, Frederico Falcão & Hamada, Neusa, 2017, Four new species of Callibaetis Eaton (Ephemeroptera: Baetidae), nymphal description of Callibaetis (Abaetetuba) fasciatus (Pictet) and keys for South American species of Callibaetis, Zootaxa 4250 (3), pp. 229-261: 240-241

publication ID

https://doi.org/10.11646/zootaxa.4250.3.3

publication LSID

lsid:zoobank.org:pub:8D0213F2-B5F7-4CFB-BB3E-637EB6EDB684

persistent identifier

http://treatment.plazi.org/id/BC7B8E32-FFB3-FFC4-60C5-FA5ECF438C91

treatment provided by

Plazi

scientific name

Callibaetis (Aiso) calophenigyn
status

sp. nov.

Callibaetis (Aiso) calophenigyn  sp. nov.

( Figs 9–12View FIGURE 9View FIGURE 10View FIGURE 11View FIGURE 12)

Callibaetis  sp. B: Cruz et al. 2016

Known stages. Female imago, nymph

Diagnoses. Female imago: 1) forewing with red C and Sc areas ( Fig. 9View FIGURE 9 D); 2) marginal intercalary veins paired ( Fig. 9View FIGURE 9 D); 3) hind wing hyaline ( Fig. 9View FIGURE 9 E); 4) costal process of hind wing rounded; 5) marginal intercalary vein on hind wing present ( Fig. 9View FIGURE 9 E); 4) abdominal terga without pattern ( Figs 9View FIGURE 9 A, 9B); 5) abdominal sterna with weak pigmented medioanterior and medioposterior sigilla ( Fig. 9View FIGURE 9 B).

Mature nymph. 1) distal margin of labrum with row of stout setae medially ( Fig. 10View FIGURE 10 B); 2) maxillary palp 0.9× length of galea-lacinia ( Fig. 10View FIGURE 10 E); 3) dorsal surface of glossae, near apex, without stout setae ( Fig. 10View FIGURE 10 G).

Description. Female imago. Length: body, 8 mm; forewing, 7.8 mm; hind wing, 1.6 mm (n=2). Head light brown; compound eyes black. Antenna with scape and pedicel light brown apically. Thorax with anteronotal protuberance, posterior scutal protuberance and scutellum light brown. Anteronotal and metascutellar protuberance rounded. Femora with trachea black pigmented on posterior surface; tibiae light brown without dark brown marks; tarsi light brown. Forewing hyaline; costal and subcostal areas red ( Figs 9View FIGURE 9 C, 9D); veins red; stigmatic area with 4– 6 cross veins reaching the subcostal vein and 1–2 veins which does not; marginal intercalary veins paired, except between ICuA2 and A; length of each intercalary vein 0.6× distance between adjacent longitudinal veins; length of forewing about 2.7× width. Hind wing ( Fig. 9View FIGURE 9 E) hyaline with one marginal intercalary vein; costal process rounded. Abdomen ( Figs 9View FIGURE 9 A– 9C) with terga and sterna light brown, segments VIII–X whitish; sterna with weak pigmented medioanterior and medioposterior sigilla. Cerci, at base, with each second segment red ( Fig. 9View FIGURE 9 C).

Mature nymph. Length: body, 8 mm; cerci, 5.5 mm; paracercus, 4.8 mm (n=2). Head light brownish. Antenna with spines and thin setae on flagellum ( Fig. 10View FIGURE 10 A). Labrum ( Fig. 10View FIGURE 10 B) with maximum length about 1.5× minimum length; anterolateral margins with long and stout setae; distal margin with stout setae medially; dorsal surface with numerous short and thin setae; near distal margin with two pairs of short and stout setae; distal margin with one row of stout setae ventrally; ventral surface with short and stout setae near lateral margin and six to seven stout setae near anterolateral margin. Right mandible ( Fig. 10View FIGURE 10 C) with 4+3 denticles; margin between prostheca and mola convex; basal half with short, thin setae and pores scattered over dorsal surface. Left mandible ( Fig. 10View FIGURE 10 D) with 4+3 denticles; margin between prostheca and mola straight; basal half with short and thin setae and pores scattered over dorsal surface. Lingua of hypopharynx ( Fig. 10View FIGURE 10 F) with apical lobe covered with small simple setae; short and thin setae scattered over inner margin of superlingua. Maxilla ( Fig. 10View FIGURE 10 E) with one row of setae on basal part of inner-dorsal row (similar to figure 21C); medially, on inner margin, with 1+6 stout setae. Maxillary palp 0.9× length of galea-lacinia; palp segment II 0.8× length of segment I; outer margin of segment I covered with long and thin setae; near outer margin of segment I with short and stout setae; apex of segment I with short and stout setae; inner margin of segment II with stout setae. Labium ( Fig. 10View FIGURE 10 G) with glossae and paraglossae similar in length; inner margin of glossae with 13 stout setae; apex with 3–5 long and stout setae; outer margin with one row of long and stout setae; dorsal surface with one dense row of long and stout setae near outer margin. Paraglossae with one stout seta at apex; ventral surface with three stout setae; dorsal surface with one row of long and stout setae near inner margin and two rows of long and stout setae near outer margin. Labial palp with segment I 0.9× length of segments II and III combined; ventral surface of segment I with few stout setae; outer margin of segment I with one row of short and stout setae; inner margin of segment II with six short and stout setae, and few thin and short setae, outer margin with few thin and short setae; dorsal surface of segment II with row of ten short and stout setae; ventral surface with numerous thin setae; apex of segment III rounded; whole margin of segment III, on dorsal surface, with stout setae. Thorax light brownish yellow, with brown spots. Metanotum without spines. Foreleg ratio ( Fig. 11View FIGURE 11 E) 1.5:(0.9 mm):0.6:0.5. Forefemur length about 4.7× maximum width; dorsal margin with few short and stout setae; length of setae on dorsal margin 0.16× maximum width of femur; anterior surface, near dorsal margin, with one row of stout setae; anterior surface, near ventral margin with two rows of short and stout setae, bifid on basal half and simple on apical half. Ventral margin of tibia with one row of stout setae; anterior surface with short and stout setae. Ventral margin of tarsus with one row of stout setae, and one row of short, trifid and stout setae ( Fig. 11View FIGURE 11 C). Claw 0.74× length of tarsus ( Fig. 11View FIGURE 11 B). Mid and hind legs similar to foreleg except femora and tarsi without bifid or trifid stout setae; femora with one row of stout setae on middle and claw denticles smaller than foreclaw denticles ( Fig. 11View FIGURE 11 A). Abdomen ( Fig. 12View FIGURE 12 A) light brownish yellow. Posterior margin of terga with regular spines ( Fig. 12View FIGURE 12 B); surface covered with numerous brown spots. Surface of sterna covered with thin setae. Gill I subequal to length of segment II, with three folds. Gill IV equal to length of segments V and VI combined, with two folds. Gill VII subequal to length of segment VIII and half of segment IX combined, with one fold. Paraproct ( Fig. 12View FIGURE 12 C) with ca. 32 marginal spines. Paracercus and cerci with long spines every two segments ( Figs 12View FIGURE 12 D, 12E).

Comments. The nymph of C. (Aiso) calophenigyn  sp. nov. is similar to the nymph of C. (Aiso) itannae Cruz, Salles & Hamada  ; and can be distinguished by the absence of stout setae on dorsal surface of glossa in C. (Aiso) calophenigyn  sp. nov. Female imago of C. (Aiso) calophenigyn  sp. nov. can be distinguished from the others species in the genus by the forewing with red C and Sc areas.

Etymology. The specific name is a free union of the three Greek words, calo = beautiful, pheni = deep red and gyn = woman or female, in allusion to the beauty of color in female.

Material examined. Holotype: Female imago reared (with nymphal and subimaginal exuviae), BRAZIL, Santa Catarina, Iraní - Ponte Serrada (lake next to the gas station), BR 282, 26° 18’11.4”S / 53° 37’01.6” W; 649 m alt.; 17.ix.2011; P. V. Cruz, N. Hamada, A. M.O. Pes and R. Boldrini cols., INPAAbout INPAGoogleMaps  . Paratype: one female imago reared, same data as holotype.GoogleMaps 

Distribution. Brazil: Santa Catarina.

INPA

Instituto Nacional de Pesquisas da Amazonia