APONOMMA (BOTHRIOCROTON) GLEBOPALMA, N SUBGEN, N-SP, AND AMBLYOMMA-GLAUERTI N-SP (ACARI, IXODIDA, IXODIDAE), PARASITES OF MONITOR LIZARDS (VARANIDAE) IN AUSTRALIA

Aponomma (Bothriocroton) glebopalma, n. subgen., n. sp., and Amblyomma glauerti, n. sp. (Acari: Ixodidae), are described from the monitor li zards Varanus glebopalma Mitchell and Varanus glauerti Mertens in West ern Australia and the Northern Territory, Australia. The new subgenus is erected to accomodate A. (Bothriocroton) glebopalma, a new species with a deeply pitted and pilose scutum in both the adult and immature stages, unlike all other described species of Aponomma. This new speci es is found in an area where Aponomma fimbriatum Koch, a parasite of v aranid lizards and various species of snakes, was the only known membe r of the genus found in both Western Australia and the Northern Territ ory. Amblyomma glauerti n. sp., an ornate Australian reptile tick foun d on the same two hosts in Western Australia and the Northern Territor y, is also described. These two new species were recovered from formal in-preserved lizard specimens; therefore, nothing is known of their li fe cycles, except that all stages parasitize varanid lizards.