Download Host Specialization in the World Agromyzidae (Diptera) by K.A. Spencer PDF

By K.A. Spencer

Phytophagous bugs symbolize a truly specific not likely belong to their host plant variety. this can staff of organisms. first of all, their quantity quantities bring about flawed conclusions in particular in areas to multiple zone of all contemporary species (ex­ the place merely few observations have been attainable, to boot cluding fungi, algae and microbes) and including as in relation to unusual insect species. Fourthly, the golf green crops on which they feed they shape al­ the nice majority (99. 4%) of the agromyzid species such a lot one half all dwelling species defined to this point. studied express a excessive measure of host specialization Secondly, their vast majority indicates very which makes those bugs specifically appropriate for slim host plant specialization, that's they feed taxonomic-phylogenetic concerns. simply on one or a couple of, in most cases heavily comparable plant With such an immense volume of information, it could species, a attribute that led J. H. Fabre to elab­ were tempting to attract far-reaching conclu­ orate the inspiration of the 'insects' botanical intuition' a sions. even if, the writer has been very cautious in century in the past. doing this.

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Extra resources for Host Specialization in the World Agromyzidae (Diptera)

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Fig. 82. Phytomyza fiavofemoralis: aedeagus (Sasakawa). Fig. 83. Phytomyza knowltoniae: aedeagus. Figs. 84, 85. Napomyza clematidis: 84, aedeagus, side view; 85, same, ventral view. Figs. 86, 87. Napomyza clematidicolla: 86, aedeagus, side view; 87, same, ventral view. Fig. 88. Chromatomyia clemativora: aedeagus. Figs. 89, 90. Chromatomyia clematoides: 89, aedeagus, side view; 90, same, ventral view. 89 31 32 Class MAGNOLIOPSIDA (Dicotyledons) ;,:/ 92 91 93 94 96 97 Fig. 91. Phytomyza clematidicaulis: aedeagus.

47 Menispermaceae (70 genera, 400 species) Liriomyza cocculi (Frick, 1953) (described as Phytobia (Praspedomyza) in view of its dark scutellum) was recorded as a leaf miner on Cocculus sp. No details of the leaf mine are known. Leaf mines have been referred to this species from Piperaceae (:eperomyia), Chenopodiaceae in the Caryophylhdae, Fabaceae and Thymeleaceae in the Rosidae and in the Asteridae Apocynaceae, Lobeliaceae and Myoporaceae. L. cocculi on the basis of these records has been treated as a polyphagous species.

The distiphallus is short in P. notata Meigen (d. Spencer, 1976a) (Fig. 148) (= pseudonotata Hering) showing a progressive evolutionary extension, from Phytomyza sp. (Beckwithia) (Fig. 149) in Norway to P. callianthemi Hering (Fig. 150) in Germany, to P. cortusifolii Spencer (1965) (Fig. 151) in the Canary Islands to P. humilis Spencer (1969b) (Fig. 152) present only in California and Alberta. As the distiphallus lengthens further, it becomes coiled, incipient in P. infelix Spencer (1969b) (Fig.

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