Mesostigmata
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Taxonomy
updated 2025
Name
Nothogynus Walter & Krantz
Classification
Superorder Parasitiformes » Order Mesostigmata » Suborder Monogynaspida » Infraorder Uropodina » Superfamily Microgynioidea » Family Nothogynidae » Genus Nothogynus
Children
Nothogynus klompeni Walter and Krantz; Nothogynus camini Walter and Krantz; Nothogynus sp.—Lord Howe Island
Diagnostic characters
- Light tan to brown, oval mites with thick cerotegument, a truncate podonotal shield, free mesonotal scutella and a nude pygidial shield
- Sternal shield divided, st1–2 and st3–4 on separate halves; genital shield with broad wings and a single pair of setae.
- Intercalary sclerite of tarsus IV reduced to linear remnant; setae av4 and pv4 absent
- Trochanter I of adult with larval setal complement (4 setae); femora, genua and tibiae I with 10 setae; tibiae II–IV with 9 setae (2–1/1,2/1–2).
- Hypostomal setae in triangular array; subcapitular gutter filled basally with dense denticles; palptibia-tarsus fused; palp apotele 2-tined.
- Chelicerae serrate, movable digit with 3 excrescences
- Larval idiosoma holotrichous (29 pairs of setae + postanal seta), adults hypertrichous
- Males with sternal-genital shield bearing 4 pairs of setae; genital opening between coxae III; fifth pair of sternal setae on or near a separate plate between coxae IV.
Similar taxa
Microgyniids and sejids have 1 or more seta-bearing mesonotal plates and setose pygidial shields, and the latter have setae av4/ pv4. Polyaspidids have a nude genital shield.
Ecology and distribution
Nothogynidae has two described species of Nothogynus from treeholes and logs rainforests in Australia, where they feed on nematodes and possibly other small invertebrates.
Known species
References
- Walter and Krantz 1999Walter and Krantz 1999:
Walter DE, Krantz GW. 1999. New early derivative mesostigmatans from Australia: Nothogynus, n. g., Nothogynidae, n. fam. (Mesostigmata: Microgyniina). International Journal of Acarology 25: 67–76.
