Criconematidae (Nematoda: Tylenchida) from Soil around Roots of Mulberry in Warm Climate Regions of Japan, with Descriptions of Two New Species

Abstract

Four species of Criconematidae were detected from soil around the roots of mulberry in warm climate regions of Japan; Hachijo-shima Is., To-shima Is., Nebukawa of Kanagawa, and Yaku-shima Is. Two of them were identified to be Hemicriconemoides chitwoodi and Crossonema dryum, and the rest two species were found to be new. Nothocriconema yakushimense n. sp. resembles N. loofi but differs in possessing a wider distinctive saucer-shaped first annule, a longer stylet, and a smaller number of body annules. Ogma brevistylum n. sp. is closely related to O. lentiforme but can be distinguished by the sharp scales on body annules, the stylet knobs with slight forwardly directed processes, slightly wider first annule than the second one, and a smaller number of body annules. Morphology of H. chitwoodi and C. dryum from mulberry fields mostly agreed with their original descriptions. JPn. J. Nematol. 13:14-19 (1983)