The Australian genus Rhytiphora (Coleoptera: Cerambycidae: Lamiinae) with a revision of the Rhytiphora collaris group Author Ashman, Lauren G. 0000-0003-1333-4678 lauren.g.ashman@gmail.com Author Keyzer, Roger De longiman@iinet.net.au Author S ́ Lipińsk, Adam text Zootaxa 2023 2023-07-04 5312 1 1 62 http://dx.doi.org/10.11646/zootaxa.5312.1.1 journal article 59206 10.11646/zootaxa.5312.1.1 769fe7b3-8227-4736-b8ed-15f27e100836 1175-5326 8129680 E45A10FC-CB08-4C66-B1E9-B6857C58343B REVISION OF THE RHYTIPHORA COLLARIS GROUP The species R. collaris Donovan, 1805 belongs to a distinct group of five species with broadly separated antennae, small eyes and a curved white lateral stripe on the humeri. The group consists of: R. garnetensis sp. nov. , R. amicula White, 1859 , R. collaris , R. delicatula McKeown, 1948 and R. piperitia Hope, 1841 . Preliminary analysis of mitochondrial data for all of these species (except R. delicatula ) confirms they are closely related but distinct lineages ( Ashman et al. 2022a ). Here, we redescribe the species of the collaris group, as well as the morphologically similar (but genetically distant) R. argentata . Key to species 1. Clypeus short (in line with mandibular articulation), with membranous anteclypeus visible beneath ( Fig. 7D ); elytra with lateral white stripe usually extending from base to apex ( Fig. 8E ); metanepisternum usually white...... R. collaris Donovan, 1805 – Clypeus extended beyond mandibular articulation, sometimes covering membranous anteclypeus ( Fig. 7E ); elytra lateral white stripe never extending beyond basal third of elytron ( Fig. 8A–C ); metanepisternum not white.........................2. 2. Prothorax with distinct transverse grooves on pronotal disc and anterior tubercule at lateral margin ( Fig. 7B ).............3. – Prothorax without distinct transverse grooves on pronotal disc or anterior tubercule at lateral margin ( Fig. 6C )...........4. 3. Eyes deeply emarginate; antennal tubercules ~3.2 widths apart; antennomeres 3–7 with banded setae ( Fig. 8F ); elytra usually heavily mottled with dorsal dark patches ( Fig. 7B ; may be faded); male genitalia with parameres apically tapered, penis pointed ( Fig. 9E ).......................................................................... R. piperitia Hope, 1841 – Eyes fully divided; antennal tubercules ~3.9 widths apart; antennomeres 3–7 with plain setae ( Fig. 8C ); elytra lightly mottled without dorsal dark patches ( Fig. 6F ); male genitalia with parameres apically blunt, penis rounded ( Fig. 9B ).............................................................................................. R. amicula White, 1859 4. Eyes fully divided, lower lobes ~3.4 widths apart; clypeus flat; antennal tubercules ~3.2 widths apart; elytral base tuberculate, heavily mottled with ochre setae ( Fig. 6A ); metaventrite with ochre patches above metacoxae ( Fig. 6B ); male genitalia with parameres apically tapered ( Fig. 9A ).................................................... R. garnetensis sp. nov. – Eyes deeply emarginate, lower lobes ~4.3 widths apart; clypeus arcuate; antennal tubercules ~3.8 widths apart; elytral base granulate, lightly mottled with ochre setae ( Fig. 6E ); metaventrite without ochre patches; male genitalia with parameres apically blunt ( Fig. 9D )............................................................... R. delicatula McKeown, 1948