Cheliferoidea

Risso, 1827

Cheliferoidea is a superfamily of ( Pseudoscorpiones, suborder Iocheirata) containing five : Cheliferidae, Chernetidae, Withiidae, Atemnidae, and Miratemnidae. It represents one of the two major superfamilies within Iocheirata and encompasses approximately one-quarter of the world's generic pseudoscorpion diversity through Chernetidae alone. The superfamily has a fossil record extending to the mid- (~100 million years ago) with specimens preserved in Kachin amber.

Damaeus by (c) Alexis Tinker-Tsavalas, some rights reserved (CC BY), uploaded by Alexis Tinker-Tsavalas. Used under a CC-BY license.Epidermoptidae by (c) Cricket Raspet, some rights reserved (CC BY), uploaded by Cricket Raspet. Used under a CC-BY license.Psoroptidae by (c) Oleksii Vasyliuk, some rights reserved (CC BY), uploaded by Oleksii Vasyliuk. Used under a CC-BY license.

Pronunciation

How to pronounce Cheliferoidea: /ˌkɛlɪˌfɛrɔɪˈdiːə/

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Identification

Members of Cheliferoidea are distinguished from the other major superfamily, Feaelloidea, by specific morphological features of the and . Within Cheliferoidea, are distinguished by chelal patterns, trichobothrial arrangements, and genital . For example, Cheliferidae possess well-developed glands in both fingers of the , while Chernetidae exhibit diverse spermathecal structures used in subfamilial .

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Habitat

Terrestrial including leaf litter, soil, under tree bark, and rocks. Some members occupy specialized subterranean environments such as cave systems in karst regions. Fossil evidence indicates presence in tropical forest .

Distribution

distribution with extant members on all continents except Antarctica. The superfamily includes both widespread and range-restricted , particularly in karst regions such as the Dinaric Karst where single-cave endemic species have been documented.

Behavior

Generally cryptic, inhabiting concealed microhabitats. Some exhibit -mediated through on larger or small vertebrates, which may explain distributions and haplotype sharing across localities in certain species.

Similar Taxa

  • FeaelloideaThe other major superfamily within suborder Iocheirata; distinguished by and trichobothrial .

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Family composition

The superfamily contains Cheliferidae (1826), Chernetidae (1855), Withiidae (1931), Atemnidae (1929), and Miratemnidae (sometimes treated as Miratemninae within Atemnidae). Myrmochernetidae is a junior synonym of Chernetidae.

Fossil record

The oldest confirmed members are from mid- Kachin amber (~100 Ma), providing age constraints for Cheliferidae and contributing to understanding of Cheliferoidea evolutionary .

Taxonomic challenges

of Chernetidae remain unresolved despite molecular phylogenetic efforts. Subfamilial based on morphological traits (e.g., T-shaped in Lamprochernetinae) are being revised as molecular data reveal groupings.

Sources and further reading