Members of Thrips genus-group from Japan are reviewed, and 45 species in seven genera are recognized. Nine species and one genus are newly described: Stenchaetothrips amamiensis sp. n., S. dentatus sp. n., S. pleioblasti sp. n., Thrips nonakai sp. n., T. ogasawarensis sp. n., T. shiranesanus sp. n., T. syringae sp. n., T. typicus sp. n. and Tsutsumiothrips ryukyuensis gen. et sp. n. Moreover, 1...

Thrips fly at a chord-based Reynolds number of approximately 10 using bristled rather than solid wings. We tested two dynamically scaled mechanical models of a thrips forewing. In the bristled design, cylindrical rods model the bristles of the forewing; the solid design was identical to the bristled one in shape, but the spaces between the 'bristles' were filled in by membrane. We studied four ...

Explaining the overwhelming success of sex among eukaryotes is difficult given the obvious costs of sex relative to asexuality. Different studies have shown that sex can provide benefits in spatially heterogeneous environments under specific conditions, but whether spatial heterogeneity commonly contributes to the maintenance of sex in natural populations remains unknown. We experimentally mani...

introduction: garlic (allium sativum) (family amaryllidaceae) are one of important crops in hamedan province. there are several insects and mites that by feeding on this plant cause to damage garlic yield. among the insect pests, the most dangerous pests of garlic are thrips species (insecta: thysanoptera). in this group, onion thrips, thrips tabaci lindeman is widely distributed and is a domin...

The weeping fig thrips Gynaikothrips uzeli Zimmermann (Thysanoptera: Phlaeothripidae) is newly recorded for the first time in the leaf galls of the weeping fig tree Ficus benjamina L. (Rosales: Moraceae) in the coastal area of Tartous, Syria. The thrips caused purplish red spots on the leaf surface of the host plant and the leaves curl. G. uzeili appears to be successfully adapted to this area.

Kelly’s citrus thrips is one of the most common thrips species found in Cyprus citrus orchards. Kelly’s citrus thrips larvae were the sole insect stage causing feeding damage mainly on immature lemon and grapefruit fruits. Under Cyprus conditions Kelly’s citrus thrips adults prefer to concentrate mostly in the northern and eastern sides of both lemon and grapefruit canopies. The recorded mean n...

Most of our present knowledge about the impacts of solar UVB radiation on terrestrial ecosystems comes from studies with plants. Recently, the effects of UVB on the growth and survival of consumer species have begun to receive attention, but very little is known about UVB impacts on animal behavior. Here we report that manipulations of the flux of solar UVB received by field-grown soybean crops...

Onion thrips, Thrips tabaci Lindeman, were collected from commercial onion fields in 2001, 2002 and 2003 to assess resistance to lambda-cyhalothrin, deltamethrin and diazinon. In 2001, six of eight adult populations were resistant to lambda-cyhalothrin, with resistance ratios (RR) ranging from 2 to 13.1 and four of these were also resistant to deltamethrin, with RR ranging from 19.3 to 120. Thr...

onion thrips, thrips tabaci lindeman (thysanoptera: thripidae), is a global pest of onion, Allium cepa l., and the principal vector of iris yellow spot virus (iYsv) that can cause 100% crop losses. the purpose of this study was to evaluate onion cultivars resistant to t. tabaci feeding damage for their reaction to iYsv following exposure to viruliferous t. tabaci in both laboratory and field ex...