Indoganodes Selvakumar, Sivaramakrishnan & Jacobus

Indoganodes Selvakumar, Sivaramakrishnan & Jacobus, n. gen.

Figs. 21–39.

Type species: Indoganodes jobini Selvakumar, Sivaramakrishnan & Jacobus, n.sp.

Description. Larva (Fig. 21).

Head: Fringe or row of setae absent. Labrum subquadrate, approximately twice as broad as long, with short, scattered setae over entire dorsal surface(Fig. 22). Hypopharynx with lingua convex with minute setae at apical margin; superlingua oval with a row of long, simple setae at apex (Fig. 23). Mandibles robust; inner and outer incisors divergent; long mediolateral setae absent; medioapical outer incisor with at least one sharp denticle and apicomedial patch of setae absent on left mandible (Figs. 24, 25). Maxillae slender, with a well-developed canine and two dentisetae; two clusters of long setae apically; inner margin at middle with row of simple long setae; outer margin at base with minute hairs laterally; maxillary palp reduced to articulated palp (Fig. 26). Submentum welldeveloped laterally; glossae and paraglossae deeply divided; paraglossae somewhat pointed; labial palp 3- segmented, with segments 1 and 2 subequal in length; segment 3 small and conical (Figs. 27, 28).

Thorax: Prosternumwithout bilobular, spinous process medially (Fig. 29) (see Fig. 65 of McCafferty & Wang (1997) for prosternum with medial, bilobular, spiny process). Pro- and mesothorax without tubercles on dorsal surface. Forefemur relatively narrow, length 2.17 times width; outer margin covered by stout setae; scattered stout setae on apical region; inner margin with short thin setae (Fig. 30). Middle and hind femora similar, slightly more slender, length 2.3 times width (Figs. 31, 32); dorsal and inner margins with row of long, stout setae and irregular small thin setae. Fore tibia without setae on outer margin and irregular short thin setae on inner margin; middle and hind tibia with row of long stout setae and irregular short thin setae on inner and outer margins. Hind leg somewhat larger than fore and mid legs. Tarsal claw hooked, bearing 4 small denticles medially (Fig. 33).

Abdomen: Gills absent on abdominal segment I; gills present on abdominal segments II–VI with margins entire (Figs. 34–38); gill II with dorsal lamella semi-operculate; gills II–V with ventral lobes flabelliform (Figs. 34–37); gill VI simple (Fig. 38). Poorly developed median tergal tubercles on segments I–IX; posterior margins of terga VI–IX each with 2–3 small spines flanking each side of median tubercle (total of 4–6 such posteromarginal spines on each tergum VI, VII, VIII or IX); posterolateral processes poorly developed on segments I–V and well developed on segments VI–IX (Fig. 39). Lateral margins of terga with thin stout setae. Caudal filaments banded; median caudal filament subequal in length to cerci.

Winged stages. Unknown.

Etymology. The new genus name is an arbitrary combination of letters, referring to the country of holotype origin, India, followed by the suffix – ganodes with reference to its inclusion in the family Teloganodidae.

Diagnosis. The larvae of Indoganodes, n. gen.,can be distinguished from other genera of Teloganodidae, and from the apparently similar genus Ephemerellina (see McCafferty & Wang, 1997), by the following combination of characters: (i) prosternum without bi-lobular, spinous process medially (Fig. 29); (ii) abdominal posterolateral processes poorly developed on segments I–V and well developed on segments VI–IX (Fig. 39); (iii) tarsal claw hooked, bearing 4 small denticles medially (Fig. 33); (iv) labrum subquadrate, approximately twice as broad as long, with short, scattered setae over entire dorsal surface (Fig. 22); (v) superlinguae of hypopharynx moderately developed (Fig. 23) and (vi) left mandible without medioapical setal patch (Fig. 24).

Species composition. Indoganodes jobini Selvakumar, Sivaramakrishnan & Jacobus, n. sp. (India)

Distribution. India (restricted to the Western Ghats).