Ectosticta

Pascoe

Cerambycinae

Ectosticta Pascoe, 1866: 104. Type species: Callidium cleroides White, 1855.

Diagnosis

Small to medium-sized brown beetles, usually bearing transverse ivory markings on elytra; antennae in male reaching beyond apices of elytra. Frontoclypeus transverse. Gland opening at base of mandibles absent. Eyes finely facetted, deeply emarginate. Antennal tubercles broadly separated, close to mandibular articulation. Antennal foramen depressed. Antennal scape distinctly shorter than pronotum; pedicel variable; antennomere 3 subequal to scape; antennomeres 3–7 without apical spines. Pronotum subquadrate, rugulose without dorsal tubercles, lateral margins rounded. Prosternal process narrow, weakly expanded apically. Procoxal cavities rounded without lateral extensions; open externally. Procoxae not or weakly projecting below prosternal process. Mesoventrite flat in front of mesocoxae; mesoventral intercoxal process broad, without secondary articulation, notched apically. Mesocoxal cavities closed to mesepimeron; mesotrochantin hidden. Elytra without costae, with transverse ivory-coloured markings; punctures clearly visible, not in regular rows, apices rounded. Femora strongly clavate; tibiae not flattened.

Distribution and Biology

Ectosticta is distributed in south-eastern Australia from the Blue Mountains of New South Wales to Victoria, Tasmania and South Australia and to Perth in Western Australia.

Adults have been collected from October to February on foliage and dead twigs of various species of Eucalyptus and Acacia, some specimens were also collected at light.

Australian Species

cleroides (White)
Callidium cleroides White, 1855: 322.
Bethelium blackburni Gahan, 1893: 178.
Callidium eburatum Pascoe, 1863: 563.
Bethelium mundum Blackburn, 1892: 57.
Callidium simillimum White, 1855: 322.
Bethelium tricolor Blackburn, 1892: 56.

ornata Blackburn
Ectosticta ornata Blackburn, 1892: 66.
Bethelium metallicum Lea, 1918: 91.
Bethelium ruficolle Lea, 1918: 91.

ruida Pascoe
Ectosticta ruida Pascoe, 1866: 104.
Bethelium puncticolle Pascoe, 1888: 493.

References

Blackburn, T. 1892. Further notes on Australian Coleoptera with descriptions of new genera and species. Part XI. Transactions of the Royal Society of South Australia 15(1): 20–73.

Gahan, C.J. 1893. Notes on the longicornia of Australia and Tasmania. Part I., with a list of the species collected by Mr. J. J. Walker, R.N., F.L.S., and descriptions of new forms. Transactions of the Entomological Society of London 1893: 165–197.

Lea, A.M. 1918. On Australian Coleoptera. Part I. Records of the South Australian Museum (Adelaide) 1: 83–104.

Pascoe, F.P. 1863. Notes on the Australian longicornia, with descriptions of sixty new species. Transactions of the Entomological Society of London 3 1(7): 526–570 pls xxii, xxiii

Pascoe, F.P. 1866. On the longicornia of Australia, with a list of all the described species. Journal of the Linnean Society of London, Zoology 9: 80–112.

Pascoe, F.P. 1888. On some new longicorn Coleoptera. Transactions of the Entomological Society of London 1888(4): 491–513 pl. xiv.

White, A. 1855. Catalogue of Coleopterous Insects in the Collection of the British Museum. Part viii. Longicornia II. London : British Museum iii 175–409 pls v–x.