Antibodies associated with infection by lung mites (Pneumonyssus simicola) in rhesus monkeys were measured by passive hemagglutination methods. Tanned human Rh negative O red blood cells or sheep red blood cells coated with soluble acarine antigens were used to detect mite-specific antibodies. Large quantities of host-specific mite antigens (P. simicola) were difficult to obtain, so free-living...

Pachyseius anisimovi sp. nov. is described based on specimens from soil and litter in the Altai Mountains and the West and East Sayan Mountains in South Siberia, Russia. A key to ten Pachyseius species known from Asia is provided. 

Comparison of species of Androlaelaps with all members of the Haemolaelaps marsupialis group show these to be two consistently distinct groups. Haemolaelaps is removed from synonomy with Androlaelaps and rediagnosed. A close relationship between Peramelaelaps Womersley and Haemolaelaps is proposed. 

A new species of soil prostigmatic mites, Adamystis thailandensis sp. nov. (Acari: Adamystidae) is described based on adult and immature specimens collected from leaf litter and upper soil layer in a coastal forest in southern Thailand. It differs from its congeners by the presence of a densely striated idiosomal shield and the presence of lens-like structures on the lateral, posterior dorsomed...

The Minnesota distribution of the blacklegged tick, Ixodes scapularis, was studied during 1998 and 1999. The majority of tick collecting was done by grouse hunters, who sent in specimens collected during the fall of 1998 and 1999. I. scapularis specimens were received from 17 counties, including eight counties in northern and central Minnesota that previously had no reports of I. scapularis. Th...

Two new mite species from India and Vietnam, viz. Armascirus denheyeri sp. nov. and Armascirus orientalis sp. nov. (Acari: Prostigmata, Cunaxidae), are described and figured together with the description of the deutonymph of Armascirus fendai from Slovakia.