Rhytiphora collaris ( Donovan, 1805 )

Ashman, Lauren G., Keyzer, Roger De & S ́ Lipińsk, Adam, 2023, The Australian genus Rhytiphora (Coleoptera: Cerambycidae: Lamiinae) with a revision of the Rhytiphora collaris group, Zootaxa 5312 (1), pp. 1-62 : 16-18

Rhytiphora collaris ( Donovan, 1805) ( Figs. 7A , 8E , 9C , 10C–H )

Saperda collaris Donovan, 1805 : plate 5. TL: Cairns, Queensland

Symphyletes vestigialis Pascoe, 1864a: 226 . TL: South Australia

Moved to Rhytiphora (Platyomopsis) vestigialis: Breuning, 1961a: 275

Saperda albocincta Guérin-Méneville, 1831: 137 . TL: Port Jackson , New South Wales. New synonym

Rhytiphora donovani Newman, 1851: 129 . TL: “ New Holland ”. New synonym

Symphyletes compos Blackburn, 1902: 319 . TL: Hughenden, Queensland. New synonym

Rhytiphora maculosella Blackburn, 1902: 320 . TL: Queensland. New synonym

Moved to Rhytiphora (Platyomopsis) albocincta: Breuning, 1961a: 275

Rhytiphora intertincta Pascoe, 1867: 302 . TL: Gawler, South Australia. New synonym

Moved to Rhytiphora (Rhytiphora) intertincta: Breuning, 1961a: 272

Rhytiphora (Saperdopsis) parafarinosa Breuning, 1970a: 375 . TL: Dawson District , Queensland. New synonym

Rhytiphora (Setomopsis) vermiculosa Breuning, 1970b: 471 . TL: Queensland. New synonym

Diagnosis. One specimen from Cairns has been sequenced (ANIC 25-066530, R. albocincta ; Ashman et al. 2022a): R. collaris is closely related to R. garnetensis sp. nov. (see above), R. piperitia and R. amicula , and is also morphologically similar to R. delicatula ( Figs. 6–8 ). The latter three species have a clypeus extended beyond the mandibular articulation, grey mottled metanepisternum and elytra with the lateral white stripe never extending beyond the basal third. Rhytiphora piperitia and R. amicula are also slightly less elongate (body 3.0–3.1 times as long as wide); R. piperitia and R. delicatula have deeply emarginate eyes (not fully divided); R. amicula and R. delicatula have plain grey antennae (with tubercules slightly further apart: 3.8–3.9 widths apart) and no transverse stripes on the pronotum. Rhytiphora piperitia has banded antennae and dorsal dark patches on the elytra. Rhytiphora amicula has grey elytra with fine ochre mottling, and smaller sex patches (covering only half of ventrite 2). Rhytiphora delicatula has no distinct grooves on the pronotum and pale grey elytra with dorsal dark patches.

Description. Body small to medium-sized, elongate: body length 10.0–19.0 mm, width 3.0–6.0 mm. Winged. Dark brown-black with ochre setae (striped pronotum, mottled elytra) and lateral white stripe on elytra ( Figs. 7A , 8E ).

Head with frontoclypeus rectangular. Eyes moderately faceted, ringed with ochre setae, lobes fully divided. Lower lobes separated by 3.7–4.7 times eye width, approximately same length as gena. Upper lobes separated by 2.2 times width of antennal socket, 1.2 times as long as antennal socket. Antennal tubercules fairly prominent, separated by 3.3 times width of antennal socket. Clypeus flat, short (in line with mandibular articulation), with membranous anteclypeus visible beneath; mandibles apically slightly pointed, maxillary and labial palps fusiform. Frontoclypeus ochre, occipital suture with ochre outline. Antennae extending slightly beyond elytral apices in male, with ventral fringe of long, dense setae on antennomeres 2–11. Scape smooth, gradually expanding apically, 2.5 times as long as wide, 4 times longer than pedicel, shorter than antennomere 3, posteriorly extending a little beyond anterior margin of pronotum. Antennomere 3 longer than 4. Antennomeres usually mottled with grey-white setae (sometimes forming distinct bands).

Prothorax subquadrate, 0.8 times as long as wide, base distinctly narrower than humeri. Lateral margins with distinct anterior ridge; pronotal disc finely punctate with transverse grooves, setae ochre and usually forming distinct transverse stripes. Prosternal process narrow, arcuate. Procoxae sometimes with small spiniform projection in males.

Elytra finely punctate, granulate in basal and central thirds, without distinct basal projections. Elytra dark, heavily mottled with yellow-ochre setae; thin, curved white line on lateral margin, usually extending beyond basal third (either as complete, unbroken line to apices or interrupted by ochre mottling). Elytral apices slightly truncate.

Legs mottled with ochre setae; male protibial tubercule absent. Mesoventrite arcuate without anterior projection. Metaventrite twice as long as mesoventrite, metanepisternum and adjacent metaventrite usually white, rest of metaventrite mottled ochre.

Ventrite 2 with broad yellow-brown sex patches in male, covering almost entire surface; fringe of ventrite 1 slightly thicker in male than other ventrite fringes. Ventrite 5 slightly longer than 4 in female, with slight apical divot and endocarina.

Male genitalia: parameres narrowly separated at base, touching at apices, thick, apically blunt and setose; penis tip with slight projection ( Fig. 9C ).

Types examined. Neotype male, here designated ( Saperda collaris ): “18-1-15 Cairns N.Q. J. Hasenpusch ” ( ANIC 25-066530 ; Fig. 10D ) . Lectotype male, here designated ( Symphyletes vestigialis ): “Type” // “ South Australia J. Odewahn ” // “ Symphyletes vestigialis (Type) Pascoe” ( BMNH; Fig. 10H ) . Lectotype male, here designated ( Symphyletes compos ): “Type” // “Hughenden, N. Queensland C. French ” // “ Symphyletes compos (Type) Blackburn” ( BMNH; Fig. 10G ) . Lectotype female, here designated ( Rhytiphora maculosella ): “ Type ” // “ Queensland ” // “ Rhytiphora maculosella (Type) Blackburn” ( BMNH; Fig. 10C ) . Holotype female ( Rhytiphora parafarinosa ): “ Dawson distr. (Barnard coll.)” // “ Rhytiphora parafarinosa mihi Typ Breuning det.” // “TYPE” ( MNHN; Fig. 10F ) . Holotype female ( Rhytiphora vermiculosa ): “ Queensland ” // “ Rhytiphora vermiculosa mihi Typ Breuning det.” // “TYPE” ( MNHN; Fig. 10E ) .

Other material examined: 35.30S 150.24E Bawley Point, NSW 8.1.94, D. C. F. Rentz, K. McCarron (1 specimen, ANIC 25-067050 ; Figs. 7A , 8E ); Waterfall NSW 8/82 S. Watkins // S. G. Watkins Collection Donated 2001 (1 specimen, ANIC; male genitalia dissection, Fig. 9C ); 3.9km Nth. Harrington E Taree NSW 29.XII.93 Acacia // S. G. Watkins Collection Donated 2001 (1 specimen, ANIC) ; 18-1-15 Cairns N. Q., J. Hasenpusch (1 specimen, ANIC 25-066530 ) .

Distribution and host plants. Mesic east coast from Queensland down to South Australia. Localities include: Cairns, Hughenden, Rockhampton, Brisbane, Taree, Sydney, Canberra, Wyperfeld, Gawler. This species has been collected from Acacia , Allocasuarina , Angophora and Casuarina trees, as well as Dodonaea , Rosa and Viminaria shrubs.

Remarks. Following our examination of the type specimens of Symphyletes compos and R. maculosella (synonyms of R. albocincta ; Breuning 1961a), we have decided to synonymise this species with R. intertincta , R. parafarinosa , R. vermiculosa and Symphyletes vestigialis under the oldest species name: R. collaris (see Discussion for more details). The holotype of Saperda collaris was unable to be found and has presumably been lost. Here we designate ANIC 25-066530 as the neotype of Saperda collaris (male specimen with mitochondrial sequence data published in Ashman et al. 2022a, as R. albocincta ; Fig 10D ).

Figures

FIGURE 6. Rhytiphora species, dorsal and ventral views. A–B: Rhytiphora garnetensis sp. nov. holotype male (ANIC 25- 074497). C: Rhytiphora garnetensis sp. nov. paratype male. D: Rhytiphora pulcherrima female. E: Rhytiphora delicatula male (ANIC 25-061931). F: Rhytiphora amicula male (ANIC 25-066535).

FIGURE 7. Rhytiphora species, dorsal and frontal (head only) views. A: Rhytiphora collaris female (ANIC 25-067050). B: Rhytiphora piperitia male (ANIC 25-058414). C–D: Rhytiphora argentata male (ANIC 25-061934). E: Rhytiphora garnetensis sp. nov. paratype male.

FIGURE 8. Rhytiphora species, lateral view. A: Rhytiphora garnetensis sp. nov. holotype male (ANIC 25-074497). B: Rhytiphora delicatula male (ANIC 25-061931). C: Rhytiphora amicula male (ANIC 25-066535). D: Rhytiphora argentata male (ANIC 25-061934). E: Rhytiphora collaris female (ANIC 25-067050). F: Rhytiphora piperitia male (ANIC 25-058414).

FIGURE 9. Rhytiphora species, male genitalia (penis and tegmen). A: Rhytiphora garnetensis sp. nov. paratype. B: Rhytiphora amicula. C: Rhytiphora collaris. D: Rhytiphora delicatula (ANIC 25-061931). E: Rhytiphora piperitia. F: Rhytiphora argentata.

FIGURE 10. Rhytiphora collaris group, type specimens. A: Platyomopsis delicatula McKeown, 1948 holotype male. B: Rhytiphora uniformis Blackburn, 1901 lectotype female. C: Rhytiphora maculosella Blackburn, 1902 lectotype female. D: Saperda collaris Donovan, 1805 neotype male. E: Rhytiphora (Setomopsis) vermiculosa Breuning, 1970 holotype female. F: Rhytiphora (Saperdopsis) parafarinosa Breuning, 1970 holotype female. G: Symphyletes compos Blackburn, 1902 lectotype male. H: Symphyletes vestigialis Pascoe, 1864 lectotype male. I: Rhytiphora amicula White, 1859 lectotype male. J: Rhytiphora piperitia Hope, 1842 lectotype female. K: Symphyletes humeralis White, 1858 lectotype. L: Rhytiphora truncata Breuning, 1940 holotype.