Megaglena sivarubani, Srinivasan & Isack, 2022

Srinivasan, Pandiarajan & Isack, Rajasekaran, 2022, A new species of Megaglena Peters & Edmunds, 1970 (Ephemeroptera Leptophlebiidae) from Tamil Nadu, India, Zootaxa 5138 (1), pp. 83-88 : 84

Megaglena sivarubani sp. nov. ( Figs. 1–22 )

Material Examined. Holotype (in ethanol): Male mature nymph ( AMC /ZN/228), South India, Tamil Nadu, Theni district , Bodimettu , Puliyuthu falls , 10°03′16″N, 77°27′29″E; 1230 m; 13.x.2021, Pandiarajan Srinivasan & Rajasekaran Isack . Paratypes (also in ethanol): 2 male nymphs, 2 female nymphs ( AMC /ZN/229), same data as holotype .

Figures

FIGURE 1. Megaglena sivarubani sp. nov. Male habitus, dorsal view.

FIGURES 2–6. Megaglena sivarubani sp. nov. 2) Labrum, dorsal view; 3) Labrum, ventral view; 4) U-shaped cleft in Labrum (arrows indicate denticle in the margins); 5) Hypopharynx; 6) Lateral process in hypopharynx.

FIGURES 7–13. Megaglena sivarubani sp. nov. 7) Left mandible; 8) Right mandible; 9) Incisor and kinetodontium of left mandible (arrow indicates spine-like processes); 10) Incisor and kinetodontium of right mandible (arrows indicate spine-like processes and vestigial denticle); 11) Maxilla (arrow indicates absence of tooth-like projection); 12) Labium; 13) Spine-like setae on the dorsal surface of III segment of labial palp.

FIGURES 14–19. Megaglena sivarubani sp. nov. 14) Foreleg of mature nymph; 15) Midleg of mature nymph; 16) Hindleg of mature nymph; 17) Forefemur of immature nymph; 18) Midfemur of immature nymph; 19) Midclaw.

FIGURES 20–22. Megaglena sivarubani sp. nov. 20) Lateral view of abdomen showing tergalii; 21) Tergalius IV; 22) Posterolateral spines in tergum VII–IX.