Halozercon

Marchenko, Irina I., 2019, Three new species of Halozercon (Acari: Mesostigmata: Zerconidae) from Altai Mountains in South Siberia (Russia), Zootaxa 4568 (3), pp. 401-434 : 431

Key to the species of the genus Halozercon

1. Some dorsal setae (except marginal) leaf-shaped or lanceolate.................................................. 2

- Dorsal setae (except marginal) other shapes................................................................. 3

2. Median region of opisthonotal shield with 17–22 setae of J series; peritremes of deutonymph shorter than adult: in adult peritremes reaching spine top of coxae II anteriorly, in deutonymph those reaching middle of coxae II.......... H. tigerek sp. n.

- Median region of opisthonotal shield with 12–13 setae of J series; peritremes of adult and deutonymph equal length—reaching level of spine top of coxae II anteriorly............................................. H. barguzin Marchenko, 2018

3. Median region of podonotal and opisthonotal shields with linear reticulation; all podonotal setae smooth; opisthonotal shield with 14–17 setae of J series slightly serrated; dorsal idiosoma 580–595 µm long..................... H. capitaneus sp. n.

- Podonotal and opisthonotal shields ornamented by small tubercles over the entire surface; all dorsal setae pilose; opisthonotal shield with more than 22 pilose setae of J series; length of dorsal idiosoma less than 580 µm.......................... 4 to posterior edge of anal opening; male chelicera as in female, fixed digit with five teeth............... H. kazachok sp. n. - Vertex with z1 setae inserted far behind j1 setae; dorsal setae pilose, short and straight: podonotal setae 10–20 µm, opisthonotal 22–25 µm; ventri-anal shield with incisions extending to anterior edge of anal opening; male chelicera with two basal and 5–6 small distal teeth....................................................... H. karacholana Wiśniewski et al. 1992