Anaphothrips obscurus

Anaphothrips • Thripidae • Thysanoptera • other insect groups • insects (plant pests) • pests-diseases-weeds

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Anaphothrips obscurus females, micropterous (left) and macropterous (right) forms (click on image to enlarge it)
Author(s): Laurence Mound, ANIC, CSIRO
Source: PaDIL

Anaphothrips obscurus (Müller 1776) - (American grass thrips)

This thrips is widely distributed in temperate and subtropical regions. The adults and larvae live within the leaf sheaths of grasses and cereals and can cause significant damage. For example, young maize plants may be attacked and more than 10% seed yield reduction has been reported for bentgrass (Agrostis stolonifera). The feeding damage results in yellow streaks when the leaves mature.

The adults are around 1½ mm long and yellowish brown. They may have short wings (brachypters) or long wings (macropters). Intermediates between both forms also exist.

Vernacular names
• English:	American grass thrips eastern grass thrips
• Français:	thrips des prés

Synonyms:
Thrips obscurus

• Other images of Anaphothrips obscurus (IPM Images and PaDIL - click to enlarge)
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  2nd instar, head

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  antenna showing partial division of segment VI

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  head and thorax

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  forewing

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  tip of abdomen

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  abdomen showing posteromarginal comb on tergite VIII