A total of 38 species of spiders were collected as suspected predators of the light brown apple moth, Epiphyas postvittana (Walk.), in the Australian Capital Territory. In all, 16 of these are re-described, and three are described as new species, while seven new synonyms are proposed: Theridiidae; Achaearanea veruculata (Urquhart). Araneidae Arachnura feredayi (Koch); Cyclosa fuliginata (Koch), comb. nov. ; Araneus transmarinus (Keyserling) = A. viridis (Keyserling), syn, nov. = A. thyridotus (Thorell), syn. nov.; Araneus heroine (Koch) = A. annulatus (Keyserling), syn. nov.; Araneus psittacinus (Keyserling); Araneus ginninderranus, sp. nov.; Phonognatha graeffei (Keyserling) ; Phonognatha melania (Koch), comb. nov. ; Gasteracantha minax Thorell. Tetragnathidae; Tetragnatha quadridens, sp. nov. Clubionidae; Chiracanthium gracile Koch; Chiracanthium mordax Koch = C. diversum Koch, syn. nov. = C. gilvum Koch, syn. nov. ; Clubiona canberrana, sp. nov. Thomisidae; Diaea cruentata (Koch), comb. nov. = D. elegans Koch, syn. nov.; Diaea pilula (Koch) = Xysticus daemeli Koch, syn. nov.; Diaea inornata (Koch), comb. nov. Amaurobiidae; Badumna inornata (Koch); Ixeuticus candidus (Koch). The genus Singotypa Simon, 1894 is proposed as a junior synonym of Phonognatha Simon, 1894.