Comprehensive Description

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General Description

Body varies around 1.2 to 1.8mm in length and is dark brown. The foretibiae are yellow apically and basally. The forewings are pale and sometimes shaded with gray beyond the wing base and at the apex. The antennae are brown while the apex of segment 2, all of segment 3, and the base of segment 4 are yellow. The head is broader than long and the cheeks are strongly arched. Ocellar setae pair 3 is posterolaterad of the anterior ocellus and the antennae are 8 segmented. The pronotum is covered with transverse anastamosing lines of sculpture, and has 3 pairs of posteromarginal setae. There are 2 anteromedial campaniform sensilla present on the mesonotum, and 2 campaniform sensilla (occasionally 1 or none) on the metanotum. The forewing has 3 distal setae (occasionally 4 or 2) on the forevein. Tergite 2 has 3 lateral setae. Tergite 8 has a complete posteromarginal comb in which the microtrichia are closely set, but irregular in length. Tergite 9 has 2 pairs of campaniform sensilla. Abdominal sternites 6 and 7 each have 1 to 3 accessory setae. On males, the glandular areas on sternites 3 to 7 are transversely elongate (Nakahara 1994).


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© University of Alberta Museums

Source: University of Alberta Museums

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