Cheleocloeon Wuillot & Gillies 1993

Sivaruban, T., Srinivasan, Pandiarajan, Barathy, S., Isack, Rajasekaran & Kluge, Nikita, 2022, First report of Cheleocloeon Wuillot & Gillies 1993 (Ephemeroptera: Baetidae) from the Oriental Region, Zootaxa 5209 (3), pp. 339-352 : 340

Cheleocloeon Wuillot & Gillies 1993

( Figs 1–59 )

Type species: Ch. yolandae Wuillot (in Wuillot & Gillies) 1993.

Figures

FIGURES 1–5. Cheleocloeon vaigaiensis sp. n., larvae. 1, female larva; 2–3, exuviae of two specimens; 4–5, exuviae of caudalii (holotype).

FIGURES 6–15. Cheleocloeon vaigaiensis sp. n., larvae. 6–7, labrum; 8–9, apices of left and right mandibles; 10, mola of right mandible; 11–12, maxilla; 13–15, labium (6–7, 11–12, holotype). Abbreviations: ds1, ds2, ds3, dentisetae.

FIGURES 16–21. Cheleocloeon vaigaiensis sp. n., fore leg of larval exuviae (holotype). 16, anterior view; 17, outer margin of femur; 18, patella-tibial suture; 19, tarsus; 20, claw; 21, enlarged portion of claw (thin arrows show larger denticles).

FIGURES 22–30. Cheleocloeon vaigaiensis sp. n., exuviae of larval abdomen. 22, anterior portion of sternum VI; 23, posterior portion of sternum VI; 24, posterior portion of tergum VI; 25, apex of male abdomen, ventral view; 26, terga I–III; 27, terga VIII–X; 28, paraprocts; 29, middle portion of cercus; 30, distal portion of cercus (22, 24–30, holotype).

FIGURES 31–39. Cheleocloeon vaigaiensis sp. n. (holotype). 31–38, tergalii I–VII; 39, distal margin of tergalius I.

FIGURES 40–44. Cheleocloeon vaigaiensis sp. n. 40, female imago; 41–42, male imago; 43, male subimago; 44, fore leg of male imago (41–42, 44, holotype).

FIGURES 45–53. Cheleocloeon vaigaiensis sp. n. 45, hind protopteron of male larva; 46, vestige of hind protopteron of female larva; 47, pterostigma of fore wing of male imago; 48. hind wing of male imago; 49, vestige of hind wing of female imago; 50. fore tarsus of female imago; 51, hind leg of male imago; 52, subimaginal exuviae of mesonotum; 53, subimaginal exuviae of middle leg of male subimago (47–48, 51–53, holotype).

FIGURES 54–57. Cheleocloeon vaigaiensis sp. n., genitalia of male imago (holotype). 54, intact genitalia, ventral view; 55, dorsal view (left gonovectis detached and turned to left, right gonovectis in natural position; 56, detached gonovectis; 57, gonostylus.

FIGURES 58–59. Cheleocloeon vaigaiensis sp. n., egg.