Trichogenia maxillaris Braasch & Soldán, 1988

Webb, J. M., Braasch, D. & Mccaferty, W. P., 2006, Reevaluation of the Genera Compsoneuria Eaton and Trichogenia Braasch & Soldán (Ephemeroptera: Heptageniidae), Zootaxa 1335, pp. 55-68 : 62-63

Trichogenia maxillaris Braasch & Soldán

Trichogenia maxillaris Braasch & Soldán, 1988: 120 (orig.) Heptagenia maxillaris ; (comb.) Kluge, 2004: 173

The larva of this species was adequately described by Braasch and Soldán (1988). The adults are unknown.

Diagnosis: Trichogenia maxillaris can be differentiated from congeners by the following combination of characteristics: i) supracoxal sclerites blunt; ii) absence of comb setae on apical margin of maxillae; iii) hypopharynx apically divergent ( Fig. 11 ); iv) ventral surface of terminal segment of labial palp with long row of setae extending to posteromedial margin ( Fig. 12 ).

Material Examined: THAILAND: 1 larva, Chiengmai Prov, small stream and waterfalls, Doi Sutep, W of Chiengmai, 19-XI-1964, WL and JG Peters [ PERC]; VIETNAM: 1 larva, Vihm Phú: Tam Dao Hill Stn, lower waterfall of stream flowing through town, 11-V-1996, B Hubley and DC Darling, ROM 961029 [ ROM]; 1 larva, Gai Lai: An Keh Dist, 10 km NW Buoenloy, small stream 1km on trail past Cha R, 1°rainforest edge, 27-VI-1996, B Hubley, ROM 961099 [ ROM].

Figures

FIGURE 11 – 13. 11 – 12, T. maxillaris, 11, hypopharynx: a. dorsal b. ventral; 12, labial palp: dorsal view of terminal segment. 13, T. ulmeri, hind femur: setae on middle section of anterior face.