Teloganodes Eaton, 1882

Sartori, Michel, Peters, Janice G. & Hubbard, Michael D., 2008, A revision of Oriental Teloganodidae (Insecta, Ephemeroptera, Ephemerelloidea), Zootaxa 1957 (1), pp. 1-51 : 9

Teloganodes Eaton, 1882

Type species: Cloe tristis Hagen, 1858 by original designation nec Teloganodes sensu Ulmer, 1939 and subsequent authors

= Macafertiella Wang (in Wang & McCafferty), 1996 syn. nov.

((( tuberculatus + kodai ) + hubbardi ) + jacobusi )

Description. Adult: Forewing ( Figs. 1–2 ) long and slender; pterostigmatic area with numerous crossveins reaching subcostal vein; vein MP 2 long, free or connected to MP 1 and CuA by crossveins; cubital field with one long intercalary vein and 1–3 smaller ones, all free. Hindwing ( Figs. 3–4 ) broad with costal process rounded; 3 longitudinal veins. Mesoscutellum without posterior processes. Claws of all legs dissimilar, one obtuse, the other hooked. In male foreleg, length of tibia ca. 1.3 length of tarsus. Male gonopods 3-segmented ( Figs. 5–6 ); second segment shorter than first, and third much reduced. Penis lobes fused except at apex ( Fig. 6 ), elongated but shorter than gonopods. Styliger plate distinctly convex ( Figs. 5–6 ). Subanal plate of female slightly pointed. Gill socket vestiges visible on abdominal segments II–VI or II–V. Terminal filament absent.

Nymph ( Figs. 120, 123 , 126,129): Body somewhat flattened. Eyes in dorsal position and always brownish orange in late instar male nymphs. Head capsule with long forked setae on lateral margins. Antenna shorter than or as long as head width. Labrum covered with numerous long and feathered setae ( Figs. 16–21 ). Femora normal or dilated ( Figs. 59–64 ). Gills on abdominal segments II–V or II–VI; gill II with dorsal lamella entire, gills III–IV with dorsal lamella posteriorly incised; gill II through penultimate gill with ventral fibrillae, final gill with dorsal lamella only and with entire margin (Figs. 82–90). Median tubercles on abdominal terga well developed. Posterolateral expansions poorly or well developed. Terminal filament absent.

Egg pear-shaped, chorion lacking attachment structures, one polar cap with epithema; a row of triangular chorionic structures close to the epithema ( Figs. 98–102 ).

Species included:

Teloganodes tristis ( Hagen, 1858) ( Sri Lanka)

Teloganodes dentatus Navás, 1931 ( India)

Teloganodes insignis ( Wang & McCafferty, 1996) comb. nov. ( Sri Lanka)

Teloganodes tuberculatus Sartori sp. nov. ( Sri Lanka)

Teloganodes kodai Sartori sp. nov. ( India)

Teloganodes jacobusi Sartori sp. nov ( Sri Lanka)

Teloganodes hubbardi Sartori sp. nov.. ( Sri Lanka)

Distribution. Sri Lanka, India (restricted to the Western Ghats)

Figures

FIGURES 1–6. Teloganodes spp. Fig. 1: Forewing of the female subimago lectotype of Teloganodes tristis (Hagen) [MCZ]; Fig. 2: Forewing of a male subimago syntype of Teloganodes major Eaton [MCZ]. Fig. 3: Hindwing of the female lectotype of Teloganodes tristis (Hagen) [MCZ]; Fig. 4: Hindwing of the male holotype of Teloganodes dentatus Navás [MNHN]; Fig. 5: Genitalia of a male subimago syntype of Teloganodes major Eaton [MCZ]; Fig. 6: Genitalia in ventral view of the male holotype of T. dentatus Navás [MNHN].

FIGURES 120–125. Holotypes of Teloganodes spp. in dorsal view (120, 123), abdomen in ventral view (121, 124) and in lateral view (122, 125). Figs. 120–122: T. tuberculatus; Figs. 123–125: T. kodai.

FIGURES 16–25. Labrum (16, 18, 20, 22, 24), with details of the dorsal setae (17, 19, 21, 23, 25), of Oriental Teloganodidae. Insertion of the setae indicated by dots on the labrum. Figs. 16–17: Teloganodes tuberculatus; Figs. 18–19: T. hubbardi; Figs. 20–21: T. jacobusi; Figs. 22–23: Dudgeodes hutanis; Figs. 24–25: Derlethina eloisae. All labra at same scale and all setae at same scale, two times enlarged compared to the labra.

FIGURES 59–64. Forefemur (59, 60, 61, 63) and setae on the transverse row (62, 64) of Teloganodes spp. Insertion of the setae on the margins indicated by dots; only some setae drawn. Fig. 59: T. tuberculatus; Fig. 60: T. kodai; Figs. 61– 62: T. jacobusi; Figs. 63–64: T. hubbardi. Femora at same scale; setae at same scale.

FIGURES 98–102. Egg structure of Teloganodes hubbardi (98–101, SEM pictures) and T. tristis (102, light microscope). Fig. 98: Shape of the egg; Fig. 99: Detail of the polar cap; Fig. 100: Micropyle area and crown of sets; Fig. 101: Detail of the uncoiled tread of the epithema; Fig. 102: Partial view of polar caps where crown and uncoiled threads are visible.