Fifteen new Trichoptera (Insecta) species from Sumatra, Indonesia Author Oláh, János Szent István University, Gödöll, Centre of Environmental Health. Residence postal address: Tarján u. 28, H- 4032 Debrecen, Hungary. E-mail: profolah @ gmail. com Author Johanson, Kjell Arne Swedish Museum of Natural History, Entomology Department, Box 50007, S- 10405 Stockholm, Sweden. text Zootaxa 2010 2010-09-20 2618 1 1 35 https://biotaxa.org/Zootaxa/article/view/zootaxa.2618.1.1 journal article 10.11646/zootaxa.2618.1.1 1175-5326 5304087 Nyctiophylax ( Paranyctiophylax ) abaya , new species group Species in this group have variously elongated, monolobed gonopods, each with a very large ventrobasal “elbow.” This characteristic gonopod structure is accompanied both by well-developed, downward-curving ventral and well-sclerotized dorsal paraproctal processes. There are species with dorsal paraproctal, spine-like processes that seem to be associated with the phallic organ as parameres. This species group includes 24 primarily Oriental species and 1 species from the Neotropical Region: N. abaya Schmid ( Sri Lanka ), N. amo Malicky ( Myanmar ) , N. anryutah , new species (Sumatra), N. archemoros Malicky ( Thailand ) , N. argentensis Malicky ( Vietnam ) , N. amykos Malicky ( Nepal ) , N. antaios Malicky (Andaman Islands) , N. antenor Malicky ( Nepal ) , N. buoc Oláh and Johanson ( Vietnam ) , N. catunujah Oláh and Johanson ( Myanmar ) , N. chiangmaiensis Malicky and Chantaramongkol ( Thailand ) , N devanampriva Schmid ( Sri Lanka ), N. dhauli Oláh and Johanson ( India : Orissa ), N. echion Malicky and Thani ( Thailand ) , N. elongatus Flint ( Suriname ) , N. kabaensis Neboiss ( Indonesia : Sulawesi ), N. lumarius Neboiss ( Sulawesi ) , N. sarug Malicky ( Philippines ) , N. suthepensis Malicky and Chantaramongkol ( Thailand ) , N. taiwanensis Hsu and Chen (Taiwan) , N. tallawakanda Schmid ( Sri Lanka ), N. tonngachang Malicky and Chantaramongkol ( Thailand ) , N. valmiki Malicky and Chantaramongkol ( Thailand ) , N. vetuluya Schmid ( Sri Lanka ), N. zadok Malicky and Chantaramongkol ( Thailand ) .