The Trigonidiinae crickets of Rodrigues are examined. Two species widespread in South Western Indian Ocean islands are recorded in Rodrigues for the first time: Trigonidium cicindeloides Rambur, 1839 and Natula longipennis (Serville, 1839). Nemobius luteolus Butler, 1876 is a Trigonidiinae and not a Nemobiinae, it is transferred to Metioche Stål, 1877 as Metioche luteolus (Butler, 1876), n. com...

Meloidogyne arenaria (Neal) Chitwood and M. incognita (Kofoid and White) Chitwood, prevalent in the sandy soils o f the southeastern United States, can severely limit soybean, Glycine max (L.) Merr., yield (10,12). Meloidogyne arenaria populations have increased in some southeastern states in recent years, apparently due to increased plantings of the soybean cultivar 'Centennial', which is resi...

Variability in penetration, development, and reproduction of two resistance-breaking field pathotypes (pt.) of Meloidogyne arenaria, M. incognita, and a population of mixed Meloidogyne spp. virulent to grape hosts were compared on two resistant Vitis rootstocks 'Freedom' and 'Harmony' in separate tests. 'Cabernet Sauvignon' was included as a susceptible host to all four nematode populations. Se...

This work presents a revision of genus Xizicus, two new subgenera are described: Xizicus (Zangxizicus) subgen. nov. and Xizicus (Haploxizicus) subgen. nov. Three new species are described, namely Xizicus (Paraxizicus) fallax sp. nov., Xizicus (Zangxizicus) tibeticus sp. nov. and Xizicus (Zangxizicus) quadrifascipes sp. nov.. Keys to subgenera and species are provided. 

Despite the crucial ecological role of lactarioid taxa (Lactifluus, Lactarius) as common ectomycorrhiza formers in tropical African seasonal forests, their current diversity is not yet adequately assessed. During the last few years, numerous lactarioid specimens have been sampled in various ecosystems from Togo (West Africa). We generated 48 ITS sequences and aligned them against lactarioid tax...

An unusual variant of Meloidogyne arenaria was discovered on roots of a traveler's tree (Ravenala madagascariensis) intended for display at a public arboretum in Pennsylvania. The population aroused curiosity by the lack of visible galling on the roots of the infected plant, and the female vulval region was typically surrounded by egg sacs. Most morphometrics of the population fit within the ra...

Resistance to Meloidogyne arenaria race 1 is not currently available in commercial peanut cultivars. Moderate levels of resistance have been identified in Arachis hypogaea plant introductions (PI) in previous greenhouse studies. The purpose of this work was to evaluate the effects of resistance in peanut PI on populations dynamics of M. arenaria in field plots. The PI designated as resistant in...

A morphological comparison of seven hypotriploid populations of Meloidogyne arenaria was made to clarify their taxonomic status, using light and scanning electron microscopy. All populations differed from each other and from the typical triploid M. arenaria by certain features. Differences were not regarded as sufficient to justify recognition of the variants as distinct species. Morphological ...