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Zoophthora radicans andZoophthora petchi sp. nov. [Zygomycetes: Entomophthorales], two species of the “Sphaerosperma group” attacking leaf-hoppers and frog-hoppers [Hom.]

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Abstract

Most isolates of “sphaerosperma group” fungi described by different authors from leaf-hoppers and frog-hoppers appear to fit intoEntomophthora sphaerossperma (Fresenius)sensu stricto Remaudière et al. (1976) synonymous withZoophthora radicans (Brefeld)Batko. One of these fungi had been described byRostrup in 1896 as a new species,Entomophthora aphrophorae, but although resemblingZoophthora radicans, it cannot be reliably identified because of its incomplete description.Petch, in 1935, erred in giving under that name a detailed description of a fungus from the same host species, as the 2 were morphologically different.Petch's fungus differs from bothEntomophthora aphrophorae andZoophthora radicans by having longer and wider (by ca. 25%) primary and secondary conidia. It differs from the other species of the “sphaerosperma group” in the shape and/or dimensions and length/width ratio of the different kinds of conidia and capillispores. Accordingly, a new name is proposed for this taxon:Zoophthora petchi Ben-Ze'ev & Kenneth, sp. nov.

Résumé

La plupart des champignons du «groupesphaerosperma», isolés par différents auteurs de cicadelles et aphrophores, apparaissent appartenir à l'espèceEntomophthora sphaerosperma (Fresenius)sensu stricto deRemaudière et al. (1976), synonyme deZoophthora radicans (Brefeld)Batko. L'un de ces champignons a été décrit parRostrup en 1896 comme une nouvelle espèce,Entomophthora aphrophorae, mais bien qu'il ressemble àZoophthora radicans, il ne peut pas être valablement identifié du fait de sa description incomplète.

Petch en 1935, a commis une erreur en donnant sous cette appellation une description détaillée d'un champignon isolé du même hôte, car les 2 espèces sont morphologiquement différentes, le champignon dePetch est différent à la fois deEntomophthora aphrophorae et deZoophthora radicans, puisqu'il a des conidies primaires et secondaires plus longues et plus larges d'environ 25%. Il diffère des autres espèces du «groupesphaerosperma» par la forme et/ou les dimensions ainsi que par le rapport longueur/largeur des divers types de conidies et de capillispores. C'est pourquoi un nouveau nom est proposé pour ce taxon:Zoophthora petchi Ben-Ze'ev & Kenneth sp. nov.

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  1. Dept. of Plant Pathology and Microbiology, Faculty of Agriculture, Hebrew University of Jerusalem, P. O. Box 12, 76-100, Rehovot, Israel

    I. Ben-Ze'ev & R. G. Kenneth

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  1. I. Ben-Ze'ev
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  2. R. G. Kenneth
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Ben-Ze'ev, I., Kenneth, R.G. Zoophthora radicans andZoophthora petchi sp. nov. [Zygomycetes: Entomophthorales], two species of the “Sphaerosperma group” attacking leaf-hoppers and frog-hoppers [Hom.]. Entomophaga 26, 131–142 (1981). https://doi.org/10.1007/BF02375027

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