The Chimarra lehibemavo species-group, new and endemic to Madagascar (Trichoptera, Philopotamidae) Gibon, François-Marie European Journal of Taxonomy 2017 2017-05-18 319 1 31 Ird & Inra, 2017 Ird & Inra 2017 [625,865,561,588] Insecta Philopotamidae Chimarra GBIF Animalia Trichoptera 14 15 Arthropoda species gensonae sp. nov.   urn:lsid:zoobank.org:act: D0D40DA2-B53D-4699-812D-A4BA6B5C80EF  Figs 8, 18    Diagnosis   Chimarra gensonae sp. nov.is closely related to  C. tamara sp. nov.When viewed laterally, their tergum X are very similar, characterized by a thick and short dorsal branch and a thin ventral branch ( Figs 8A, 14A). The two species differ by the phallotheca, short and stout in  C. gensonae sp. nov.( Fig. 8D–E), long and slim in  C. tamara sp. nov.( Fig. 14D–E).    Etymology It is a pleasure to dedicate this species to my colleague Gwenaelle Genson in recognition of her efforts for the barcoding of caddisflies.    Type material    Holotype  MADAGASCAR: ♂, mounted on 2 slides, remaining parts in alcohol, Tamara River,  4 kmfrom Ranomafana, 21°14′45″, 47°25′37″ E,  850 m,  24 May 1995.   Paratypes  MADAGASCAR: 3 ♂♂, same data as holotype, in alcohol; 1 ♂, Ambatoharanana River near Ranomafana, 21°15′15″ S, 47°27′34″ E, 850 m, 23 May 1995.   Other specimens  MADAGASCAR: 1 ♂, mounted on 3 slides, remaining parts in alcohol, Ranomafana National Park, tributary of the Namorona, 21°15′50″ S, 47°25′15″ E, 1230 m, 7 Nov. 1996.    Description SIZE. Forewing 7.6 mm, hind wing 6.0 mm. TERGUM X. Dorsal branch wide and short, thumb-shaped when viewed laterally, toward the apex a small protuberance with two sensillae; ventral branch thin as long as dorsal branch; dorsal and ventral branches forming an angle of 65°. INFERIOR APPENDAGES. Roughly triangular, anterior margin almost twice as long as ventral margin; dorsal part curved distad, inner lobe long, thin, slightly protruding. PHALLIC APPARATUS. Short compared to other species of the group. Phallotheca split nearly from the base; ventral lamina as long as dorsal lamina, thinner and digitiform; when viewed dorsally, dorsal lamina with a lateral fold and a sudden narrowing after mid-length ( Fig. 8D); internal sclerite short, stout, bullet-shaped ( Fig. 8E); phallotremal sclerite including an ovoid basal part, a thin spine and a pair of hooks.    Distribution  Madagascar(endemic), Ranomafana National Park and surroundings areas. 2620276309 1995-05-24 Madagascar 850 21.245833 Tamara River 47.426945 14 15 1 1 holotype