Haplothrips tritici (Kurdjumov) (Bournier A. / ENSA Montpellier) Adults Still in ear of wheat.. Haplothrips tritici (Kurdjumov) (Coutin R. / OPIE) pupa Overwintering. The leaves of wheat are sucked by H. tritici adults, causing streaks. The ripening seeds of wheat are sucked by H. tritici nymphs, leaving brown spots caused by. PDF | The wheat thrips, Haplothrips tritici, is known from across eastern Europe and adjoining areas of Asia into western Europe and north.

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Both adults and larvae are dangerous, but the latter are usually more noxious, invoking partial or complete white ear effect, drying of flag leaf, partial ear fertilization, and incomplete grain filling.

Wings with additional cilia, transparent, blackened at base. Wheat thrips in regions of developing virgin and long-fallow lands in North Kazakhstan.

A threshold of 80 individuals per ear was established for spring wheat and this was seldom exceeded. Kurdjumov first mentioned that H. ThripsWiki ThripsWiki – providing information on the World’s thrips. Fore tibia yellow except for the base and edges, fore tarsus yellow.

It was shown that when the average number of adult thrips per ear were7. Female fecundity is estimated at eggs. When preparing to hibernate the larvae can penetrate into soil to a depth of cm or more to 90 cm.

User Username Password Remember me. At this ratio of host to predator, marked damage to crops does not occur and other control measures may be unnecessary. Close Find out more. The number of adults, eggs and nymphs on spring wheat were Hot dry weather at the end of summer may also be unfavorable for insect survival due to the promotion of fast grain ripening and corresponding shortening of the larva feeding period.


Go to distribution map Larval peak density occurs during the milk development stage of seeds. Subscription Login to verify subscription. Tastenov and Shul’gina reported that fenvalerate applied between wheat germination and heading may control wheat thrips. During development of cereals thrip adults invade winter rye at first, then winter wheat.

Minaei and Mound indicated that they considered the records of cerealis from Iran to be based on misidentifications of triticibut they suggested that further studies were required to determine if there is any evidence that these names represent different species in other countries. How to cite item. Volodichev reviewed the harmfulness of H. It was shown in special tests that the roots of seedlings from grain damaged by H.

Haplothrips (Haplothrips) tritici

The objective of this report is to examine the published literature, and to consider this in relation to observed structural variation in recently collected samples as well as specimens in museums that are variously labeled as one or other of these two species.

This is an oligophagous pest of small grains, primarily wheat. The examination was done at the end of the milk stage or the beginning of the wax-ripe stage of spring wheat. Thysanoptera in forest-steppe of middle Volga region. In Siberia, indamage on wheat was due chiefly to H.

The most intensive flight coincides with the beginning of ear formation of spring wheat where the great bulk of adults concentrate. Class Insecta, order Thysanoptera, suborder Tubulifera, family Phloethripidae, tribe Haplothripini, genus Haplothrips. In China, indimethoate and trichlorphon were applied for control of H.

In the Cluj district of Romania inH. Email this article Login required. Han and Xu summarized the economic importance of H. Die Rritici Deutschlands66, 1— In spring they rise to the surface where they pass through a complicated metamorphosis pronymph, nymph I, nymph II, adult.


Taking into consideration the difference between the weight of uninfested grains and that of grains with different degrees of infestation, estimates of total grain loss have been made.

Haplothrips (Haplothrips) tritici – Thrips Wiki

Journal of Natural History41, — The weight of grains of the sample containing the minimum population of thrips nymphs served as his standard of comparison. African Journal of Biotechnology10, — Cultural Control Deep ploughing to a depth of about 25 cm after spring wheat harvest or after one shallow ploughing, is an effective method of controlling the population of H.

In Russian Tanskii V. Chemical treatment might be envisaged in some cases, but never later than the period of milky ripeness Kamechenko, Deutsche Entomologische Zeitschrift57, — Unlike the Sunn Pest, the flour-baking quality of grain damaged by thrips does not decrease, however the sowing happothrips of seeds drops notably.

These brown spots may appear on the wheat germ or on the back or in the furrow of the grain Bournier and Bernaux, ; Han and Xu, In the Elblag region hzplothrips Poland inH. Bioecological features of wheat thrips in north Kulunda and Ob forest-steppe.

Information was provided showing that late winter wheat varieties were times more infested by H. Pests Haplothrips tritici Kurd.

Host-Plant Resistance Varieties of wheat in which the last stage of booting or the initial stage of heading is earlier than the peak occurrence of H.