An update on the ant-mimicking genus Corinnomma Karsch, 1880 (Araneae, Corinnidae, Castianeirinae) Author Sankaran, Pradeep M. text Zootaxa 2023 2023-03-14 5254 4 534 544 http://dx.doi.org/10.11646/zootaxa.5254.4.5 journal article 10.11646/zootaxa.5254.4.5 1175-5326 7732167 48C9CAB2-8946-4815-9D44-87C5CD389718 Corinnomma plumosum ( Thorell, 1881 ) Figs 3 , 5C Corinna plumosa Thorell, 1881: 216 (♁). Castaneira plumosa Simon, 1897: 167 ( lapsus ). Corinnomma plumosa Deeleman-Reinhold, 2001: 305 , 397. Type material. Holotype ♁ from INDONESIA : Moluccas / Maluku Islands : Ternate ( 00°48′N , 127°20′E ; 1104 m a.s.l. ), date unknown, leg. O. Beccari , repository MSNG (no register number), examined based on photographs. Diagnosis. Males of C . plumosum are closely related to those of C . severum in having a long embolus, but can be distinguished from the latter species by the presence of a wide cymbial retrobasal process (vs. absent in C . severum ), strongly spiralled embolus (vs. weakly in C . severum ), and obliquely oriented loop of sperm duct (vs. longitudinally oriented in C . severum ) (cf. Figs 3C–D , 5C with Figs 4C–E , 5D ). Redescription. Male ( holotype , Fig. 3A–B ) in alcohol (somatic features after Thorell (1881)) . Prosoma pitchblack, unevenly covered with greenish-grey feathery setae, almost twice as long as its width, with thoracic striae. Fovea short, distinct. AER strongly recurved, PER strongly procurved ( Fig. 3B ); ALEs oblong, all other eyes round ( Fig. 3B ). Sternum pitch-black, sub-elliptical, pubescent. Opisthosoma subovate, black, with median, transverse constriction ( Fig. 3A ), with three transverse greenish-grey stripes. Anterior legs brownish, posterior blackish, with greenish-grey spots and stripes on all femora. Body length 7.0. Pedipalp ( Figs 3C–D , 5C ): cymbium retrobasally with flat, triangular process, retrobasal paracymbial spine shifted apically onto this process ( Fig. 3C ). Tegulum pearshaped, with less coiled sperm duct having obliquely oriented loop ( Fig. 3C ). Embolus moderately long, forming open spiral, with broad proximal part and blunt tip directed at 11-o’clock in ventral view ( Figs 3C , 5C ). Female . Unknown. Distribution. Indonesia ( Moluccas ) ( Thorell 1881 ).