
Egolia variegata (a species of bark-gnawing beetle)
Basis for Tasmanian occurrence
Semmens, T.D., McQuillan, P.B. & Hayhurst, G. (1992). Catalogue of the Insects of Tasmania. Government of Tasmania: Department of Primary Industry, 104 pp. (as Egolia variegata)
TMAG collections
Classification
Order: Coleoptera
Suborder: Polyphaga
Superfamily: Cleroidea
Family: Trogossitidae
Subfamily: Egoliinae
Morphology
Typical length (mm): 7
Flightedness: winged and assumed capable of flight
Source literature on morphology and taxonomy (*primary taxonomic source, where identified):
*Erichson, W.F. (1842). Beitrag zur Insecten-Fauna von Vandiemensland, mit besonderer Beruecksichtung der geographischen Verbreitung der Insecten. Nicolai’schen Buchhandlung 8(1): 379 pages.
Ecology
Assumed larval feeding: predator
Association with dead wood or old trees: obligately saproxylic
Ecological attributes: — Nothofagus cunninghamii is a host-plant (Bashford, 1990a) — Found in galls of Uromycladium on Acacia dealbata (Bashford, 2002).
Collection method(s) for TMAG material: — Baited trapping (funnel trap) — Flight intercept trapping (trough below Malaise trap) — Hand collection (substrate not specified) — Malaise trapping — Not specified — Pipe trapping — Sticky trapping on Acacia dealbata — Sticky trapping on Acacia melanoxylon — Sticky trapping on Eucalyptus obliqua — Sticky trapping on Eucalyptus viminalis — Trapping using a range of devices placed in crown of Eucalyptus obliqua (Bar-Ness, 2005) — Vane trapping.
Source ecological literature:
Grove, S.J. (2009b). Beetles and fuelwood harvesting: a retrospective study from Tasmania’s southern forests. Tasforests 18: 77-99.
Bar-Ness, Y. (2005). Crown structure and the canopy arthropod biodiversity of 100 year old and old-growth Tasmanian Eucalyptus obliqua. Msc thesis, Univ. of Tasmania, Hobart.
Bashford, R. (1990a). Tasmanian forest insects and their host plants: records from the Tasmanian Forestry Commission insect collection. Hobart: Tas. Forestry Commission, 32 pages.
Bashford, R. (2002a). The insect fauna inhabiting Uromycladium (Uredinales) rust galls on silver wattle (Acacia dealbata) in Tasmania. Aust. Entom. 29 (3): 81-95.
Harrison, K.S. (2007). Saproxylic beetles associated with habitat features in Eucalyptus obliqua trees in the southern forests of Tasmania. PhD thesis, Dept. of Zoology, Univ. of Tasmania, Hobart.
