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Aptinothrips stylifer

Fig. 1

Fig. 2

Fig. 3


Figures

Fig. 1 Antenna and head
Fig. 2 Meso- and metanotum
Fig. 3 Tergite VIII and IX (female)

Species

Aptinothrips stylifer Trybom

Biology

This species breeds only on a restricted range of grass species, apparently preferring Deschampsia and Dactylis species, and it is not reported to be a pest.

Distribution

Widespread in Europe and North America, also found in Japan and New Zealand South Island.

Recognition

A wingless yellow species with the apex of the abdomen and terminal antennal segments light brown. Head distinctly longer than wide, with no ocelli; anterior margin overhanging basal antennal segment. Antennae 8-segmented, III & IV with sense cone simple, VIII slightly longer than VII, but VII+VIII shorter than VI. Pronotum with no long setae. Meso and metanota extend full width of pterothorax. Tarsi 2-segmented. Wings never developed. Tergites faintly reticulate, with a pair of pores close to posterior margin; VIII without a marginal comb of microtrichia. Sternites with 10 or more small discal setae.

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Related species

Four species are usually recognised in this genus, all wingless and from Europe. The most common and widely dispersed of these is A. rufus, but that has 1-segmented tarsi and the terminal 3 antennal segments fused into a single unit.