Callibaetis stictogaster Navás 1915, Navas, 1915

Cruz, Paulo Vilela, Salles, Frederico Falcão & Hamada, Neusa, 2017, Additions and corrections to the systematics of mayfly species assigned to the genus Callibaetis Eaton 1881 (Ephemeroptera: Baetidae) from South America, Zootaxa 4231 (4), pp. 500-534: 523-525

publication ID

https://doi.org/10.11646/zootaxa.4231.4.2

publication LSID

lsid:zoobank.org:pub:99D539A1-D4BF-48C4-AEE1-0CA8F198C631

DOI

http://doi.org/10.5281/zenodo.5315586

persistent identifier

http://treatment.plazi.org/id/039E3278-FFB4-FFF5-DDDA-26450D6A91E5

treatment provided by

Plazi

scientific name

Callibaetis stictogaster Navás 1915
status

 

Callibaetis stictogaster Navás 1915   revalidated species

( Figs. 17 View FIGURE 17 A–18E)

Callibaetis stictogaster Navás 1915b: 121   ; Gillies 1990: 28. (previously syn. with C. jocosus   by Gillies 1990)

Known stages. I ♀♂.

Diagnosis. Male imago: 1) costal margin of forewing with pigmentation extending beyond R1 and less intense after R2 ( Fig. 17 View FIGURE 17 D); 2) marginal intercalary veins paired ( Fig. 17 View FIGURE 17 D); 3) hind wing with pointed costal process; 4) marginal intercalary veins present on hind wing.

Female imago: 1) forewing completely brown ( Figs. 17 View FIGURE 17 F, 18C, 18D); 2) marginal intercalary veins paired ( Figs. 17 View FIGURE 17 F, 18C, 18D); 3) hind wing with brown marks ( Fig. 18 View FIGURE 18 E); 4) hind wing with pointed costal process ( Fig. 18 View FIGURE 18 E); 5) marginal intercalary veins on hind wing present ( Fig. 18 View FIGURE 18 E); 6) abdominal terga and sterna covered with brown spots ( Figs. 17 View FIGURE 17 B and 18A); 7) abdominal terga with longitudinal mark medially, near anterior margin; 8) anterior margin of terga II–IX with one pale triangle, inside of it with spots ( Fig. 18 View FIGURE 18 A); 8) abdominal sterna with pigmented medioanterior and medioposterior sigilla ( Fig. 18 View FIGURE 18 B); 9) abdominal sterna with two large brown marks on anterior margin, one medially and other anterolaterally ( Fig. 18 View FIGURE 18 B).

Redescription. Female imago: Head. Yellowish with red “M” mark ( Fig. 18 View FIGURE 18 A). Thorax. Anteronotal protuberance rounded. Metascutellar protuberance pointed. Wings. Forewing completely brown, with hyaline cross veins ( Figs. 18 View FIGURE 18 C and 18D); stigmatic area with 12 cross veins touching Sc vein; marginal intercalaries paired; length of each intercalary vein 0.9 × distance between adjacent longitudinal veins; length of forewing about 2.8× width. Hind wing ( Fig. 18 View FIGURE 18 E) with some brown marks; with two intercalary marginal veins; costal process pointed. Abdomen. Terga ( Fig. 18 View FIGURE 18 A) with longitudinal mark medially, near anterior margin, and small light brown spots; anterior margins of terga II-IX each with one white triangular mark, inside with spots. Sterna ( Fig. 18 View FIGURE 18 B) covered with reddish spots; with one longitudinal line medially; two large brown marks medially and anterolaterally, medial mark formed by spots. Caudal filaments light brown, segments brown at base and apex.

Comments. The female imago of C. stictogaster   revalidated species can be distinguished from C. (C.) jocosus   , C. (C.) zonalis   , C. (C.) willineri   , C. (C.) guttatus   and C. (A.) dominguezi   , as well other species of the genus, by the following characteristics: forewing completely brown ( Figs. 17 View FIGURE 17 F, 18C, 18D); marginal intercalary veins on hind wing present ( Fig. 18 View FIGURE 18 E); abdominal terga and sterna covered with brown spots ( Figs. 17 View FIGURE 17 B and 18A); anterior margin of terga II–IX with one white triangular mark, inside of it with brown spots ( Fig. 18 View FIGURE 18 A); and abdominal sterna with two large brown marks on anterior margin, one medially and other anterolaterally ( Fig. 18 View FIGURE 18 B).

Based on the re-evaluation of the morphological evidence, we propose the revalidation of Callibaetis stictogaster   revalidated species and designate the female imago housed in MZLP as lectotype ( Figs. 17 View FIGURE 17 A and 17B), the male imago housed in MZLP as paralectotype ( Figs. 17 View FIGURE 17 C and 17D) and the female imago housed in MZB as paralectotype ( Figs. 17 View FIGURE 17 E and 17F).

Females collected from Brazil possess egg–nymph development inside their abdomens, indicating a possible ovoviviparous mode of reproduction.

Material examined. Callibaetis stictogaster   , one female (lectotype by present designation), ARGENTINA, Prov. de Buenos Aires, 15.x.1913, C. Bruch coll., MZLP   . Callibaetis stictogaster   , one male imago (paralectotype by present designation), ARGENTINA, Prov. de Buenos Aires, 15.x.1913, C. Bruch coll., MZLP   . Callibaetis stictogaster   , one female imago (paralectotype by present designation), ARGENTINA, Prov. de Buenos Aires, 15.x.1913, C. Bruch coll., MZB   . Four female imagoes, BRAZIL, Rio Grande do Sul state, Bossoroca, Barra do Angico , Piratini River , 112m alt., 28°032’06.2” S / 54°057’29.9” W, light trap, 20.x.2013   - 03.xi.2013, A. M. O. Pes coll., INPA.

Distribution. Argentina: Prov. Buenos Aires, Brazil: Rio Grande do Sul state.

MZB

Museum Zoologicum Bogoriense

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Ephemeroptera

Family

Baetidae

Genus

Callibaetis

Loc

Callibaetis stictogaster Navás 1915

Cruz, Paulo Vilela, Salles, Frederico Falcão & Hamada, Neusa 2017
2017
Loc

Callibaetis stictogaster Navás 1915b : 121

Gillies 1990: 28
Navas 1915: 121
1915