What Bug Is That? The guide to Australian insect families.

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Biphyllids may occur under bark or in leaf bases, especially when fermentation is occurring, but they also feed on and in the carbonaceous fruiting bodies of pyrenomycetous fungi, such as Daldinia and Hypoxylon .


Oblong to elongate, somewhat flattened, reddish brown to black or occasionally bicoloured beetles, densely clothed with erect and decumbent hairs. Eyes very coarsely facetted; pregular region with pair of setose cavities opening laterally just beneath eyes; pronotum with well-developed lateral margins, sometimes finely crenulate or serrulate, a pair of longitudinal, sublateral carinae, and occasionally an additional pair of basal grooves or foveae; femoral lines present on ventrite 1 and usually metasternum; penultimate tarsal segment reduced, preceding ones with membranous lobes beneath.

Larvae elongate, cylindrical and dorsally sclerotised, with complex mandibular prostheca bearing comb-hairs, falcate mala, and posterodorsally displaced 8th spiracles, usually borne on short tubes; T9 rarely with minute urogomphi; segment 10 terminal.


Althaesia , Diplocoelus and Biphyllus occur in Australia. [Lea 1922b; Nikitskii 1983.]