Ganonema ochraceellum (McLachlan)

Oláh, János & Johanson, Kjell Arne, 2010, Description of 33 new species of Calamoceratidae, Molannidae, Odontoceridae and Philorheithridae (Trichoptera), with detailed presentation of their cephalic setal warts and grooves 2457, Zootaxa 2457 (1), pp. 1-128 : 10-11

Ganonema ochraceellum (McLachlan)

Asotocerus ochraceellus McLachlan, 1866: 255 .

Ganonema ochraceellum ( McLachlan 1866) ; Ulmer (1951: 27).

Ganonema fuscipenne ( Albarda, 1881: 17) , new synonym.

Type locality: “Borneo”.

Distribution: India (South, North), Myanmar, Thailand, Laos, Vietnam, Malaysia (Peninsular, Sabah), Indonesia (Kalimantan, Java).

New records: BORNEO: O. Borneo, Pajau River [Mjöberg] – 1 male ( NRM) . VIETNAM: Hoabinh, 20 km to Tonlac , 31.i.1986, singled [J. Oláh] – 3 males, 1 female ( OPC) . VIETNAM: Ngoc Lac , 25.i.1986, singled [J. Oláh] – 1 male ( OPC) . VIETNAM: Lamdong, Baoloc, Duchma stream, 22.x.1988, singled [J. Oláh] – 1 males ( OPC) . VIETNAM: Lamdong, Baoloc, Locchau stream 24.x.1988, singled [J. Oláh] – 3 males ( OPC) . MALAYSIA: Perak, Halong stream, ix–x.1993, light [G.S. Robinson] – 18 males ( NHML) . LAOS PDR: Luang Namtha Prov., Nam Ha NBCA, Lakkhammai Village, Nam Leung stream, 749 m, UTM 47Q0744602, 2339873, 30.iv.2005, light trap, loc 29 [N. Jönsson, T. Malm & B. Viklund] – 1 male ( NRM) .

Remarks. This ochraceous animal with narrow forewing is widely distributed from India (south and north) to Borneo and Java. Malicky (1994) noted the possible synonymy of Ganonema fuscipenne (erroneously printed as G. fuscicornis ) and G. ochraceellum . We have cleared, examined and drawn genitalia of a large number of specimens from India (Assam, Meghalaya), Myanmar, Thailand, Laos, Vietnam, Malaysia (Peninsular, Sabah), Indonesia (Kalimantan). The genitalia are nearly identical. The shape and length of the preanal appendages are highly sensitive to the examining angle, which has been thought upon as real differencies in several published drawings. In dorsal view, the apex of segment X may be visible as rounded, cut or even excavated, depending on the view angle as well as on the degree of lateral expansion. There are variations in the development of the mesal longitudinal sutures on tergum IX as seen in dorsal view. These sutures may be present and well developed, or almost vestigial in the same population. There are intraspecific variations in the shape of the apices of the gonocoxites; varying from gradually to abruptly tapering, and in the section curving mesad. There are variations also in the presence or development of the less sclerotized acrotergite or acrosternite, frequently not indicated in the drawings in species descriptions. Ganonema ochraceellum has narrow forewings with intraspecific variations, including a more-or-less rounded apex; forewing subapical margin is usually strongly sickle-shaped, but variations are observed.