Teloganodes kodai Sartori, 2008

Sartori, Michel, Peters, Janice G. & Hubbard, Michael D., 2008, A revision of Oriental Teloganodidae (Insecta, Ephemeroptera, Ephemerelloidea), Zootaxa 1957 (1), pp. 1-51 : 15-20

Teloganodes kodai Sartori sp. nov.

( Figs. 43 , 60 , 123–125 )

Material examined. Holotype: 1 nymph (not mature), India, Tamil Nadu State, 6 km below Kodaikanal , 1800 m., 19.III.1978, K. Wood [ MZL].

Paratypes: 26 nymphs, same data as holotype [15 in FAMU, 11 in MZL, of which 1 partially mounted on slide preparation] .

Description. Nymph

Body length at least 6 mm and 7 mm, without cerci, in male and female nymphs respectively. Cerci slightly longer than body length.

General colouration of head, thorax and abdomen dark brown dorsally; light brown ventrally, sterna VII and VIII washed with grey; legs brownish orange ( Figs. 123–124 ).

Outer margin of head fringed with a row of setae from behind eyes to labrum insertion. Antennae short, 0.85 times head width, flagellum with 13–14 articles. Mouthparts very similar to those of T. tuberculatus , except as following: mandibles with one long thin seta in middle of outer margin; maxillae with one long feathered seta dorsally and row of 4–5 long feathered setae ventrally on inner margin, at base of lacinia ( Fig. 43 ); labial palp with segment 1 shorter than length of segments 2 and 3 combined, segments 1 and 2 subequal.

Prothorax with 2 rounded tubercles dorsally; mesothorax with 3. All legs similar in shape and ornamentation. Femur ( Fig. 60 ) moderately broad, ca. 1.8 times longer than wide; outer margin covered by thin long setae only; submarginal row of numerous short blunt setae, the same scattered setae also present on dorsal surface; inner margin with a row of long thin setae, row continuing on dorsal surface to near articulation with trochanter. Tibia and tarsal claw as in T. tuberculatus , except claw bears 4 blunt teeth medially.

Abdominal terga with moderately developed median tubercle on segments I and X, strongly developed on segments II–IX ( Fig. 125 ). No posterolateral projections on segments II–III, slightly marked on segments IV– VI, well developed on segments VII–IX ( Fig. 124 ). Lateral margins of terga with short and stout setae. Gills and cerci as in T. tuberculatus .

Winged stages unknown

Diagnosis. The nymph of T. kodai can be easily distinguished from that of T. insignis by the shape of the labrum, the proportions of the femora, as well as the relative sizes of the median tubercle on abdominal terga III and X (T 3 <T 10 in T. insignis , whereas T 3> T 10 in T. kodai ). T. kodai is also easily separated from T. tuberculatus mainly by the length of the antennae, the ornamentation of the femora and the posterolateral projections of the abdomen.

Etymology. The noun in apposition “kodai” is in reference to the region where specimens were collected.

Figures

FIGURES 40–46. Maxillae (40, 41) and detail of the setae on the apico-ventral part (42–46) of Oriental Teloganodidae. Fig. 40: Teloganodes tuberculatus; Fig. 41: Dudgeodes hutanis; Fig. 42: T. jacobusi; Fig. 43: T. kodai; Fig. 44: D. pescadori; Fig. 45: D. ulmeri; Fig. 46: Derlethina eloisae.

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 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.