Chimarra of Sabah and Sarawak, northern Borneo (Trichoptera: Philopotamidae)

Thirty new species of Chimarra Stephens (Trichoptera: Philopotamidae) from the Malaysian part of Borneo (Sabah and Sarawak) are described, and eight previously described species are redescribed (Chimarra dulitensis Kimmins, 1955 and C. demeter Malicky, 2000, originally described from the Malaysian part of Borneo; and also C. phlegyas Malicky, 2008; C. polyneikes Malicky, 2008; C. prokrustes Malicky, 2008; C. terramater Malicky, 2008; C. thaumas Malicky, 2008; and C. tityos Malicky, 2008, originally described from the Indonesian part of Borneo, but now also recorded from the Malaysian part of Borneo). New species described include: Chimarra antheae, C. caduca, C. chanchuluni, C. cuspidata, C. cygnus, C. danumensis, C. dejongi, C. denticula, C. devogeli, C. drepane, C. fuilianae, C. gyrospina, C. jannekae, C. karlijnae, C. kinabaluensis, C. lambi, C. liwaguensis, C. noloyan, C. noohi, C. phillipsae, C. physanoton, C. preapicalis, C. scolops, C. silausilau, C. sinitorum, C. stenodactylus, C. vantoli, C. vanwelzeni, C. ventritropis, and C. xiphosella. Two major groups, the Chimarra tsudai group and the Chimarra digitata group are recognized, based on characters of the male genitalia and wing venation, to include most of these species.