GYNAIKOTHRIPS FICORUM PDF

Ziouani, Kh. Benzehra, A. Saharaoui, L. Abstract Population fluctuations of Gynaikothrips ficorum Marchal, Thysanoptera, Tubulifera and natural enemies on leaf gall of Ficus retusa in Algeria Monthly fluctuations of thrip populations on Ficus retusa were monitored and parasites and predators in Boudouaou, Algeria, were identified. Twenty leaves were collected fortnightly from 30 trees from January to December

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Head longer than wide, slightly constricted behind eyes; postocular setae with apices bluntly pointed, scarcely extending to posterior margin of eye; maxillary stylets retracted almost to postocular setae, about one third of head width apart. Pronotum with major setae variable, anteromarginals minute, anteroangulars commonly well developed, midlaterals and posteroangulars usually much shorter than epimerals; epimeral sutures often not complete.

Fore tarsus with small or minute tooth. Metanotum longitudinally reticulate. Fore wing parallel sided, with about 15 duplicated cilia. Male smaller than female, no fore tarsal tooth; tergite IX setae S2 short and stout. Related species About 40 species are listed in the genus Gynaikothrips, mainly from Southeast Asia. The genus remains poorly defined, and species recognition is difficult. Priesner gave a key to many species, but there are few studies on variation within and between populations of any species.

It is usually recognised by the pattern of sculpture on the pronotum, the yellow antennae, and the minute fore tarsal tooth. However, populations in SE Asia sometimes show considerable variation in the lengths of the pronotal setae, such that distinction between species remains uncertain.

Mound et al. Large populations on these trees can sometimes become a public nuisance Mound et al. Tree et al. Distribution data Originally from SE Asia, but now widespread around the world, wherever its host plant is cultivated. Family name.

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Thysanoptera Californica

Recognition data Distinguishing features Both sexes fully winged. Head longer than wide, slightly constricted behind eyes; postocular setae with apices bluntly pointed, scarcely extending to posterior margin of eye; maxillary stylets retracted almost to postocular setae, about one third of head width apart. Pronotum with major setae variable, anteromarginals minute, anteroangulars commonly well developed, midlaterals and posteroangulars usually much shorter than epimerals; epimeral sutures often not complete. Fore tarsus with small or minute tooth.

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Gynaikothrips ficorum (Marchal, 1908)

Anthocorid bugs of the genera Orius, Macrotracheliella and Montandoniola seem to be particularly effective predators within the galls Tawfik, ; Tawfik and Ata, ; Pericart and Halperin, ; Paine, Chrysopidae such as Chrysoperla have been found to eat adults and larvae in both California and Egypt. Similarly, Eulophid wasps and Pyemotid mites are widely reported as attacking various stages of this thrips Burks, ; Abreu-Rodriguez, Impact Top of page The host tree, Ficus microcarpa, is widely planted around the world both for decoration and as a shade tree.

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