Derlethina Sartori 2008

Subgenus Derlethina Sartori in Sartori et al. 2008

(Figs 137–161)

Genus Derlethina Sartori in Sartori, Peters & Hubbard 2008: 44.

Subgenus Derlethina: Kluge 2023.

Type species: Derlethina eloisae Sartori in Sartori, Peters & Hubbard 2008.

Diagnosis. Tergalii II–IV (3 pairs) present; tergalius III with ventral lobe and with cleft on dorsal lobe; tergalius IV without ventral lobe, either with cleft on dorsal lobe (Fig. 19), or without it; tergalii V–VI absent (Figs 17–19). Differs from all other subgenera by loss of tergalii V–VI.

Indian representatives. One species, Teloganodes (Derlethina) tamiraparaniae (Selvakumar et al. in Selvakumar et al. 2014)

Comment. The genus Derlethina, besides the absence of the fifth pair of tergalii, was said to differ from the genera Teloganodes and Dudgeodes by two imaginal characters:

́Hind wing minute with costal process acute and located almost at apex of wing; a single simple longitudinal vein» (Sartori et al. 2008: 44, fig. 15). Actually hind protoptera of T. (D.) tamiraparaniae demonstrate the shape and venation usual for other taxa of Teloganodes, with costal process located near middle and with more than one vein (Figs 155–156). The same is true for the type species, T. (Derlethina) eloisae (Kluge 2023: fig. 3).

́The absence of crossvein in the pterostigmatic area of the forewing» (Sartori et al. 2008: 44, fig. 14). Actually in T. (D.) tamiraparaniae crossveins in pterostigmatic area are present both on imaginal wings (Fig. 152) and on larval protoptera (Figs 153–154). The same is true for protoptera of the type species, T. (Derlethina) eloisae (Kluge 2023: fig. 2).