Download e-book for kindle: Agromyzidae (Diptera) of Economic Importance by K.A. Spencer

By K.A. Spencer

The unique stimulus which began KENNETH SPENCER on a examine of the Agro­ myzid flies was once a call for participation, which he accredited, to translate from the German the monograph on Leaf Miners through Professor E. M. HERING. From this built approximately two decades of collaboration until eventually Professor HERING's demise in 1967. Dr. SPENCER has himself defined over six hundred new species within the relatives, lots of which he accumulated and reared from identified host vegetation in the course of his large travels to the entire 5 major continents. mostly due to his paintings, the variety of species recognized in Britain has elevated from ninety in 1945 to 313 this day. he's therefore uniquely certified to jot down this e-book in regards to the hundred and fifty or so species that are usually linked to cultivated crops. a lot of the taxonomic aspect supplied right here might be of price essentially to experts; yet with assistance from a microscope and the botanical host record (Chapter 2) and the varied illustrations (mostly ready via ANN SPENCER) these in agri­ cultural institutes and in other places may still now be capable of determine the vast majority of species came across attacking vegetation in any a part of the world.

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Extra resources for Agromyzidae (Diptera) of Economic Importance

Example text

GREATHEAD, 1971). DISTRIBUTION. Uganda: Kawanda; Tanzania: Ifakara. PARASITES. Three species of hymenopterous parasites have been reared from the puparia of this species in Uganda: Habrocytus sp. (Pteromalidae), Eurytoma sp. (Eurytomidae) and Eucoilidea sp. (Cynipidae). In the limited series ofrearings of M. bonavistae which have been carried out the former species was found to be the most frequent parasite. None of the three, however, are host-specific on M. bonavistae, and all have been reared from M.

MALE GENITALIA. Aedeagus as in Figs. 26, 27, cylindrical bladder below mesophallus curving upwards behind and extending slightly beyond rear of mesophallus. EARLY STAGES. Mouth-hooks of larva each with single tooth, the left-hand one conspicuously stronger; posterior spiracles separated by own diameter and each with an ellipse of 12-15 elongate pores around the short central horn (Fig. 28); puparium pale, yellowish-white. HosT-PLANT. Viciafaba L. BIOLOGY. This is not known in detail but oviposition is believed to take place in the stem near ground level in young plants early in June.

7% in Madhya Pradesh. ) in the Agra area; the rate of parasitism increases steadily from February onwards. Discussion TAXONOMY. This is a distinctive species, readily recognizable by the greatly enlarged ocellar triangle. It is clearly most closely related to M. chalcosoma Spencer in Africa (cf. p. 34) which has a similar biology and generally the same morphology, including the large ocellar triangle. EcoNOMIC IMPORTANCE. M. obtusa appears to occur in considerable numbers wherever its host-plants are cultivated in the Oriental Region.

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