Podapolipid mites (Acari: Heterostigmata): key to genera, biogeographical history and description of four new Australian species of Eutarsopolipus.

Four new species of parasitic mites of the genus Eutarsopolipus (Trombidiformes: Podapolipidae) are described from Australian carabid beetles: E. ampullaceous sp. nov.

Abrolophus from Australasia, and the mysterious Mypongia (Trombidiformes: Parasitengona: Erythraeidae).

An undetermined species of Abrolophus Berlese was intercepted in quarantine by Australian biosecurity on kiwifruit imported from New Zealand. Here, we show that these are the Australian species Abrolophus ripicola (Womersley, 1934), a species known from the post-larval stages only. We present evidence that the larva of A.

The first cryptic genus of Ixodida, Cryptocroton n. gen. for Amblyomma papuanum Hirst, 1914: a tick of North Queensland, Australia, and Papua New Guinea.

We describe a new genus Cryptocroton n. gen. for Amblyomma papuanum Hirst, 1914, a tick of North Queensland, Australia, and Papua New Guinea.

A revision of the genus Extenuipalpus Reck, 1959 (Trombidiformes: Tetranychoidea: Tenuipalpidae), with description of a new species.

Extenuipalpus is reviewed, covering its taxonomic history, a new genus diagnosis, body and leg chaetotaxy, and redescriptions of the three previously known species E. niekerkae (Meyer, 1979), E. quadrisetosus (Lawrence, 1940) and E.

A new subgenus, Australixodes n. subgen. (Acari: Ixodidae), for the kiwi tick, Ixodes anatis Chilton, 1904, and validation of the subgenus Coxixodes Schulze, 1941 with a phylogeny of 16 of the 22 subgenera of Ixodes Latreille, 1795 from entire mitochondrial genome sequences.

A new subgenus, Australixodes n. subgen., is described for the kiwi tick, Ixodes anatis Chilton, 1904.

Phoresy and Mites: More Than Just a Free Ride.

Mites are masters at attaching to larger animals, often insects, in a temporary symbiosis called phoresy that allows these tiny animals to exploit patchy resources. In this article, we examine phoresy in the Acari, including those that feed on their carriers in transit, from a broad perspective. From a phylogenetic perspective, phoresy has evolved several times from free-living ancestors but also has been lost frequently.

Description of the female, nymph and larva and mitochondrial genome, and redescription of the male of Ixodes barkeri Barker, 2019 (Acari: Ixodidae), from the short-beaked echidna, Tachyglossus aculeatus, with a consideration of the most suitable subgenus for this tick.

Background: Ixodes barkeri, a tick with a distinctive ventrolateral horn-like projection on palpal segment 1, was described in 2019 from two male ticks from the Wet Tropics of Far North Queensland, Australia. However, females lie at the core of the taxonomy and subgenus classification of Ixodes; hence, we sought specimens of female ticks, successfully recovering females, plus nymphs and larvae. Mitochondrial genomes are also desirable additions to the descriptions of species of ticks particularly regarding subgenus systematics.

Sheltered life beneath elytra: three new species of Eutarsopolipus (Acari, Heterostigmatina, Podapolipidae) parasitizing Australian ground beetles.

In this study, we conducted a summer sampling of carabid beetles in eastern Australia to identify their associated parasitic mites. Here, we describe three new species of the genus Eutarsopolipus from under the elytra (forewings) of three native carabid species (Coleoptera: Carabidae): Eutarsopolipus paryavae n. sp.

Contrasting species diversification of Eutarsopolipus (Acariformes: Podapolipidae) on Castelnaudia and Notonomus (Coleoptera: Carabidae).

Eutarsopolipus (Acari: Podapolipidae) is a large genus of mites parasitic in the subelytral space of carabid beetles. Herein, I explore the species radiations of Eutarsopolipus on the pterostichine genera Castelnaudia and Notonomus found in the rainforests of eastern Australia. Castelnaudia has an extraordinary radiation of podapolipid mite species, with most beetle species carrying multiple species of mites unique to each host.

Dorsal setae in Raoiella (Acari: Tenuipalpidae): Their functional morphology and implication in fluid secretion.

The setae of mites are not regarded as secretory structures, yet in the flat mite genus Raoiella, each developmental stage presents droplets of fluid associated with the tips of their dorsal setae. To understand the origin of this fluid, the ultrastructure of the dorsal setae is investigated in females of Raoiella bauchani Beard & Ochoa and the invasive pest species Raoiella indica Hirst using scanning and transmission electron microscopy techniques. The dorsal setae are barbed along their entire length and have either a broadened plumose or a flat spatulate tip.

New species of Eutarsopolipus (Trombidiformes: Podapolipidae) from the pterostichine genera Castelnaudia and Trichosternus (Coleoptera: Carabidae) in Australia.

Three new species of Eutarsopolipus Berlese are described from the flightless pterostichine carabid genera Castelnaudia Tschitscherine and Trichosternus Chaudoir found in rainforests in eastern Queensland: Eutarsopolipus piraticus sp. nov. from Trichosternus frater Darlington and T.

Two new species of Australian Eutarsopolipus (Acariformes: Podapolipidae) from Nurus medius (Coleoptera: Carabidae).

Eutarsopolipus burwelli sp. nov. and E.

The megisthanid mites (Mesostigmata: Megisthanidae) of Australia.

The Australian Megisthanidae are revised, resulting in the description of five new species from passalid beetles (Coleoptera: Passalidae) in Queensland: M. manonae sp. nov.

A new tribe of tarsonemid mites (Trombidiformes: Heterostigmatina) parasitic on tetrigid grasshoppers (Orthoptera).

Podotarsonemini tribe nov. (Tarsonemidae: Acarapinae), with one nominate genus Podotarsonemus gen. nov.

A revision of the Heatherellidae (Parasitiformes: Mesostigmata) with a new genus and two new species from Australasia.

The discovery of a new genus of Heatherellidae in New Zealand has led us to revise this enigmatic family and its constituent genera. Aheatherella n. gen.

Two new species of Tenuipalpus Donnadieu, 1875 (Acari: Trombidiformes: Tenuipalpidae) from Iran.

Two new flat mite species (Acari: Trombidiformes: Tenuipalpidae), Tenuipalpus iranicus sp. nov. ex.

Review of the genus Myrmozercon Berlese (Acari: Laelapidae), with description of a new species from Iran.

A new species of laelapid mite, Myrmozercon hunteri sp. nov. associated with Myrmica sp.

A review of larval Chyzeria Canestrini, 1897 (Acari: Parasitengonina: Chyzeriidae).

Type-material for all larvae of species of Chyzeria Canestrini, 1897 (Prostigmata: Chyzerioidea: Chyzeriidae) was examined, diagnoses are presented and a key to species provided. The genus Chyzeria is divided in two species groups, onychia and hirsti, according to morphological and host preference differences. In addition, two new species of Chyzeria are described from specimens parasitising paropsine beetles (Coleoptera: Chrysomelidae): Chyzeria southcotti n.

Post larval stages of Tanytydeus beyzavii sp. nov. (Acari: Paratydeidae) from Iran.

A new species Tanytydeus beyzavii sp. nov. (Acari: Paratydeidae) is described and illustrated from soil under plants in Iran.

Tenuipalpidae (Acari: Trombidiformes) from Casuarinaceae (Fagales).

The Tenuipalpidae associated with the Casuarinaceae are reviewed, including one new genus, Palpipalpus gen. nov., twelve new species, and seven redescriptions.

A new genus and species of Schizogyniidae (Acari: Mesostigmata) associated with carabid beetles (Coleoptera: Carabidae) from Ukraine.

A new genus and species of Schizogyniidae (Acari: Mesostigmata: Celaenopsoidea), Euroschizogynium calvum gen. nov. and sp.

Two new species of Chrysomelobia Regenfuss, 1968 (Acariformes: Podapolipidae) from Paropsis charybdis Stål (Coleoptera: Chrysomelidae).

Two new species of Chrysomelobia Regenfuss, 1968, C. alleni n. sp.

Ultrastructure of the male genital tract, spermatogenesis and spermatozoa of Hattena cometis Domrow (Acari: Gamasida: Ameroseiidae).

The ameroseiid mite Hattena cometis has a male genital system that consists of an unpaired, u-shaped testis and paired deferent ducts leading into an unpaired accessory genital gland and ejaculatory duct. The genital opening is located anteriorly immediately in front of the sternal shield. Spermatogenesis is simple, probably due to the haploid nature of the male.