New host plant records are given for six Empria species from Japan. They are Rosa multiflora [Rosaceae] for E. honshuana Prous & Heidemaa, 2011, Rubus sp. [Rosaceae] for E. japonica Heidemaa & Prous, 2011, Geum japonicum and G. calthifolium var. nipponicum [Rosaceae] for E. loktini Ermolenko, 1971, Rosa multiflora, Potentilla indica and probably Rubus parvifolius [Rosaceae] for E. quadrimaculat...

Comparative analysis of development and survivorship of two geographically divergent populations of the Natal fruit fly Ceratitis rosa Karsch designated as Ceratitis rosa R1 and Ceratitis rosa R2 from Kenya and South Africa were studied at seven constant temperatures (10, 15, 20, 25, 30, 33, 35 °C). Temperature range for development and survival of both populations was 15-35 °C. The development...

Physiological races of powdery mildew (Podosphaera xanthii) cause different symptoms in eight melon lines. Infection by races 1, 2, and 5 was examined in different melon lines. After a compatible reaction, conidia germination, haustorium initiation from the germ tube, germ tube branching, and sporulation occurred within 12, 24, 48, and 120 h, respectively, and the conidia matured within 240 h. ...

rhizoctonia-like fungi were isolated from the infected roots of miniature rose (rosa hybrida cv. linda) plant with chlorosis and necrosis symptoms, grown in commercial glasshouse in rafsanjan, iran, during the autumn of 2011. all of the isolates were identified as binucleate rhizoctonia sp. on the basis of hyphal characteristics and nuclei number. they were tested for detection of the anastomos...

Based on a study of 1,100 specimens of the genus Agra (Coleoptera: Carabidae: Lebiini: Agrina) from Costa Rica, twenty-nine new species were discovered and are here validated and described: A. catie, n. sp. (type locality: Limon, Tortuguero National Park, Estacion Cuatro Esquinas, sea level, LN 280000,590500); A. catbellae, n. sp. (type locality: Cartago, Turrialba, 600m, 09°53'N 083°38'W); A. ...

Species of Phyllosticta are important group of pathogenic and endophytic fungi that are reported from various crop plants, ornamental and non-fruiting plants. These fungi cause several diseases such as leaf and fruit spots and fruit rot. In order to identify Phyllosticta species in Guilan province, several collections were examined around the region. Altogether 14 taxa were isolated from differ...

While recent studies have elucidated many of the factors driving parasite dynamics during the growing season, the ecological and evolutionary dynamics during the off-season (i.e. the period between growing seasons) remain largely unexplored. We combined large-scale surveys and detailed experiments to investigate the overwintering success of the specialist plant pathogen Podosphaera plantaginis ...

Various preservation methods at low temperature have been reported for several powdery mildew fungi, but the conidia of Podosphaera aphanis causing powdery mildew of strawberry could not be preserved either at low temperature or by freeze-drying and liquid-drying of conidial suspensions or diseased leaf discs. Here, we developed a new technique for a labor-saving preservation of the conidia of ...