Euphthiracaroidea

Euphthiracaroidea mites can be distinguished from related superfamilies within Euptyctima by specific morphological features of the prodorsum and notogaster. Diagnostic characters include patterns of cristae (ridges) on the prodorsum, arrangements of bothridial structures, and specific setation patterns on the legs and body. Family-level identification relies on coxal setation formulae, presence or absence of prodorsal tubercles, and the structure of the bothridial brachytrachea. Members of Synichotritiidae exhibit clusters of bothridial brachytrachea not found in other families within the superfamily.

Leaf litter in forest ecosystems. Documented from insular and mainland tropical localities, including coastal island environments.

Oriental Region, with confirmed records from Thailand including the Similan Islands. Broader distribution within tropical and subtropical Asia inferred from family-level occurrence patterns, but specific range limits undefined.

• PhthiracaroideaBoth superfamilies belong to the infraorder Mixonomata and share ptychoid body form (ability to enroll). Euphthiracaroidea is distinguished by specific arrangements of prodorsal cristae and bothridial structures, and by family composition.

• mites
• oribatids
• leaf litter
• tropical
• Southeast Asia

• BugGuide
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• New species of oribatid mites in the families Synichotritiidae and Phthiracaridae from Thailand, with a checklist of Thai Euptyctima (Acari: Oribatida: Euphthiracaroidea, Phthiracaroidea)