Cheiroseius
Creators: name: De Moraes, Gilberto J.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Ascidae
Cheiroseius

description: Key to the Cheiroseius species recorded from Brazil (based on females)
1. Peritreme extending posteriorly beyond stigma, curving inward behind coxa IV................................... 2
- Peritreme extending or not posteriorly beyond stigma, never curved behind coxa IV.................................5
2. Ventrianal shield with four pairs of opisthogastric setae in addition to circumanals; leg I at most 250 long............................................................................................ Cheiroseius brevipes Karg, 1977
- Ventrianal shield with 2–3 pairs of opisthogastric setae in addition to circumanals; leg I at least 330 long................3
3. Ventrianal shield with two pairs of opisthogastric setae in addition to circumanals; dorsal shield smooth; without metapodal platelets..................................................................... Cheiroseius luizgonzagai n. sp.
- Ventrianal shield with three pairs of opisthogastric setae in addition to circumanals; dorsal shield ornamented; with a pair of metapodal platelets....................................................................................4
4. Dorsal shield ornamented with a network of ridges and depressions; leg I about 360 long...... Cheiroseius xerophilus n. sp.
- Dorsal shield ornamented with minute punctuation; leg I about 800 long.... Cheiroseius tuberculatus (Evans & Hyatt, 1960)
5. Dorsal shield with lateral incisions (between setae S 2 and S 3); reticulate pattern of dorsal shield formed by lines of tubercles................................................................... Cheiroseius ornatus (Evans & Hyatt, 1960)
– Dorsal shield without lateral incisions; ornamentation of dorsal shield not constituted by lines of tubercles...............6
6. Tarsus I without claws; most of dorsal setae dagger-like........................... Cheiroseius pugiunculus Karg, 2006
- Tarsus I with claws; most of dorsal setae aciculate............................................................7
7. Anteromedian extension of epistome distally truncate and with denticles, slightly longer than anterolateral extensions............................................................................. Cheiroseius parvipulmonis Karg, 1977
- Anteromedian extension of epistome tapering distally and/or much longer than anterolateral extensions.................8
8. Peritreme extending posteriorly beyond stigma by an extension distinctly longer than its width immediately anteriad of stigma.................................................................. Cheiroseius tennesseensis (De Leon, 1964)
- Peritreme not extending posteriorly beyond stigma or extending by a very short extension............................................................................ Cheiroseius neophalangioides Mineiro, Lindquist & Moraes, 2009
description: Published as part of De Moraes, Gilberto J., 2017, Two new species of Cheiroseius Berlese (Acari: Blattisociidae), with a key for identification of the species from Brazil, pp. 108-120 in Zootaxa 4324 (1) on page 118, DOI: 10.11646/zootaxa.4324.1.6, http://zenodo.org/record/997091