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Chiggers have been studied throughout the world for their role in disease transmission. Venezuela has the largest chigger diversity in South America. In a review of Venezuelan genera, two monotypic genera described from Robinson's Mouse Opossum collected in Falcon State and after examination of the types of both genera, it was found that Delmohius hardyi Brennan and Goff and Carebareia johnstoni Goff and Brennan are the same species. Therefore, we are proposing the synonymy of Delmohius with Carebareia.

The new species, Aceria neopaederiae infesting leaves of Paederia foetida L. (Family Rubiaceae) in Thailand, Hong Kong and Singapore, is described herein. The mite produces small, round to irregular galls, often fused, on both leaf surfaces. The complete descriptions of both males and females, including line drawings and SEM photographs were provided.