Trachytes
Creators: name: Kontschán, Jenő
name: Starý, Josef
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Trachytidae
Trachytes

description: Key to females of North American species of Trachytes
The key is based on the illustrations and descriptions of Błoszyk & Szymkowiak (1996), Huţu (2000), Koch (1841), Trägårdh (1910) and WiŠniewski & Hirschmann (1994). Two species of North American Trachytes are known only from males (T. krantzi Huţu, 2000 and T. lindquisti Huţu, 2000), and are not included in the key.
1. Vertex with wide and ribbed lateral sections................................................................. 2
- Vertex without wide and ribbed lateral sections.............................................................. 5
2. Inguinal shield free, not fused to ventral shield.............................................................. 3
- Inguinal shield fused to ventral shield...................................................................... 4
3. Surface of genital shield smooth, setae X4 placed on ventral shield....................... T. aegrota (C. L. Koch, 1841)
- Genital shield with reticulate sculptural pattern, setae X4 situated on small platelets in membranous cuticle................................................................................ T. kaliszewskii Błoszyk & Szymkowiak, 1996
4. Genital shield linguliform, apical part wider than basal part, proportion of apical and basal parts of genital shield 1.3–1.5: 1. 5
- Genital shield axe-shaped, apical part narrower than basal part (3:1)......................... T. canadiensis Huţu, 2000
5. Pygidial shield rhomboid; surface of genital shield smooth............................... T. aegrotasimilis Huţu, 2000
- Pygidial shield oval; surface of genital shield reticulate....................................... T. californica sp. nov.
6. Genital shield linguliform, anterolateral angles of genital shield rounded......................................... 7
- Genital shield axe-shaped, anterolateral angles of genital shield pointed...........................................8
7. Ventral shield separated from inguinal and sternal shields; surface of genital shield ornamented by irregular pits............................................................................. T. balazyi WiŠniewski & Hirschmann, 1994
- Ventral shield fused with inguinal and sternal shields; surface of genital shield smooth............ T. marilynae Huţu, 2000
8. Inguinal shield fused to ventral shield; apical part of genital shield relatively wide (apical: basal = 1:1.3–2).............. 9
- Inguinal shield separated from ventral shield; apical part of genital shield narrow (apical: basal = 1: 3)....... T. axe sp. nov.
9. Sternal shield fused to inguinal and ventral shields; ventral and dorsal idiosoma ornamented by irregular pits.............................................................................................. T. minima Trägårdh, 1910
- Sternal shield separated from inguinal and ventral shield; surface of ventral and dorsal idiosoma without irregular pits.......................................................................................... T. nortoni Huţu, 2000
description: Published as part of Kontschán, Jenő & Starý, Josef, 2012, New Uropodina (Acari: Mesostigmata) from California, USA, pp. 26-38 in Zootaxa 3210 on page 37, DOI: 10.11646/zootaxa.3210.1.2, http://zenodo.org/record/280198