Ixodes (Afrixodes) matopi n. sp. is described from females and males collected off twigs bearing deposits of intraspecific communication marks secreted by the pre-orbital glands of the klipspringer Oreotragus oreotragus and from laboratory-reared immature specimens. One female was also found on a goat. The 4 collections were all from Zimbabwe, 3 of them from Matabeleland South Province and the fourth from Inyanga District, Zimbabwe.

Amblyomma hebraeum, 60CO irradiation of nymphs failed to attenuate Cowdria ruminatium

levamisole toxicity in pigs was enhanced by nicotine-like compound (pyrantel) but was not affected by organophosphate (dichlorvos)

Theileria mutans, 4 isolates obtained from geographically distant parts of South Africa by subinoculation of infected blood were readily transmitted to cattle by Amblyomma hebraeum, all attempts to transmit these isolates with Rhipicephalus appendiculatus were unsuccessful

Toxoplasma gondii, clinical disease in nonvaccinated dairy goats, protective immunity against clinical toxoplasmosis in dairy goats vaccinated with Hammondia hammondi but not H. heydorni, antibody to T. gondii in vaccinated and challenge exposed goats

Ostertagia ostertagi, beef cattle, acquisition of inhibited larvae during winter and spring, efficacy of ivermectin against inhibited early 4th-stage larvae of O. ostertagi and other nematodes of abomasum and intestinal tract: Louisiana

Dirofilaria immitis-infected dogs (exper.), cardiopulmonary function before and after period of exercise training, dogs tolerated program without signs of congestive heart failure or further development of pulmonary hypertension

Rhipicephalus zambeziensis n. sp., all stages of life cycle compared with life cycle of R. appendiculatus, redescription of R. appendiculatus, attempts to cross breed these 2 species in laboratory were unsuccessful thus validating their taxonomic separation, the 2 species can live sympatrically

Babesia sp. in Hyalomma marginatum rufipes, laboratory transmission to susceptible cattle achieved both biologically (tick feeding) and mechanically (injection of infected blood), low pathogenicity, apparently not transmissible to horses

Theileria? taurotragi, probable cause of death of 4 calves with cerebral theileriosis: Transvaal