Biconothrips Stannard

This Urothripine genus is closely related to Urothrips from Africa, but the only described species, B. reedi, is known only from various sites in eastern Australia (Fig. 9). However, Mound (1972a) indicated that there is considerable variation between populations, and this may reflect a series of localised species.

Diagnosis. Apterous, body tuberculate-reticulate; head anterior margin projecting over bases of antennae, without prominent setae; eyes with about 8 ommatidia; stylets retracted almost to eyes, about 1/3 of head width apart; antennae 5-segmented, morphological segments III–V fused, VII–VIII fused to form slender segment; pronotum without prominent setae, or with epimeral setae well-developed, notopleural sutures reduced; basantra absent; mesopraesternum absent or very slender; no sternopleural sutures; fore tarsi without tooth; pelta transverse, closely joined to tergite II; tergite IX twice as long as VIII; tube about as long as IX, anal setae more than three times as long as tube; male sternite VIII without pore plate.