Agromyzidae (Diptera) of Economic Importance by K.A. Spencer

By K.A. Spencer

The unique stimulus which all started KENNETH SPENCER on a research of the Agro­ myzid flies was once a call for participation, which he approved, to translate from the German the monograph on Leaf Miners by way of Professor E. M. HERING. From this built approximately twenty years of collaboration until eventually Professor HERING's demise in 1967. Dr. SPENCER has himself defined over six hundred new species within the relations, lots of which he accumulated and reared from identified host vegetation in the course of his wide travels to all of the 5 major continents. principally due to his paintings, the variety of species recognized in Britain has elevated from ninety in 1945 to 313 this present day. he's therefore uniquely certified to put in writing this e-book in regards to the hundred and fifty or so species that are on a regular basis linked to cultivated vegetation. a lot of the taxonomic aspect supplied the following might be of price basically to experts; yet with assistance from a microscope and the botanical host record (Chapter 2) and the various illustrations (mostly ready by way of ANN SPENCER) these in agri­ cultural institutes and somewhere else should still now be ready to determine the vast majority of species stumbled on attacking plants in any a part of the world.

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All these species are strictly limited to the Leguminosae for their hosts but 29 within this family many species show a considerable degree of oligophagy, the genera Dolichos, Phaseolus and Vigna, for example, each being attacked by a number of species. It has therefore seemed more practical to arrange the discussion systematically by pests rather than alphabetically by crops. n. - Iraq HEAD. Frons narrow, equal to width of eye, not projecting above eye in profile; 2 ors, 2 ori, the lower incurved; orbital setulae in single row, reclinate; ocellar triangle extended, apex reaching level of upper ori; orbits well differentiated but narrow; jowls deepest in centre below eye, about 1/7 vertical height of eye, cheeks visible as narrow ring (antennae missing in both available specimens).

Pseudonapomyza dilatata Sas. Agromyza albipennis Mg. Agromyza megalopsis Her. ) Agromyza albipennis Mg. Agromyza ambigua Fall. Agromyza hordei Spencer Agromyza intermittens Beck. Agromyza megalopsis Her. ) Pseudonapomyza spinosa Spencer Phytomyza fuscula Zett. Phytomyza nigra Mg. ) Host list of Agromyzid pests Host Oryza sativa L. Panicum miliaceum L. Panicum sp. Pennisetum purpureum Schum. Pennisetum typhoideum Rich. Phleum pratense L. Saccharum officinarum L. Secale cereale L. ) Pers. Triticum aestivum L.

DISTRIBUTION. Nyasaland, Kenya, Uganda; apparently not present in West Africa. PARASITES. Not recorded. Discussion TAXONOMY. Before the male genitalia of the Agromyzidae were regularly studied, Melanagromyza kikuyuana was differentiated from chalcosoma by the slightly different arrangement of orbital setulae which, in the type series, appeared to be entirely proclinate. However, examination of additional material has shown that these setulae can be slightly variable and the genitalia of the male allotype of kikuyuana confirms that this species is synonymous with chalcosoma.

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