Zerconidae
Creators
Description
Key to the females of the Nearctic genera of Zerconidae
1. Peritrematal shield with a single pair of setae .....................................................................Monozercon Błaszak, 1984
- Peritrematal shield with more than one pair of setae.................................................................................................... 2
2. Peritrematal shield with two pairs of setae................................................................................................................... 3
- Peritrematal shield with three pairs of setae............................................................................................................... 18
3. Peritrematal shield posteriorly truncated...................................................................................................................... 4
- Posterolateral ends of peritrematal shield expanded posteriorly.................................................................................. 8
4. Peritrematal setae p1 short and smooth, p2 elongate and pilose.................................................................................. 5
- Both peritrematal setae short and smooth..................................................................................................................... 6
5. Peritrematal shield narrowly separated from dorsal shield; adgenital sclerites absent.... Mixozercon Halašková, 1963
- Peritrematal shield widely separated from dorsal shield; adgenital sclerites present............ Zercon C. L. Koch, 1836
6. Ventri-anal shield divided into three lobes by a pair of deep lateral incisions.................. Macrozercon Błaszak, 1976
- Ventri-anal shield without lateral incisions................................................................................................................... 7
7. Peritrematal shield narrowly separated from dorsal shield; ventri-anal shield expanded anterolaterally; margin of opisthonotum with seven pairs of setae; dorsal cavities absent............................................ Lindquistas Błaszak, 1981
- Peritrematal shield widely separated from dorsal shield; ventri-anal shield not expanded anterolaterally; margin of opisthonotum with eight pairs of setae; dorsal cavities present and conspicuous ................... Bledas Halašková, 1977
8. Peritrematal setae approximately uniform, both short and smooth.............................................................................. 9
- Peritrematal setae diverse in form.............................................................................................................................. 11
9. Posterolateral ends of peritrematal shield free ........................................................................... Bakeras Błaszak, 1984
- Posterolateral ends of peritrematal shield fused to ventri-anal shield........................................................................ 10
10. Adgenital sclerites present, with two pores ........................................................ Blaszakiella Sikora & Skoracki, 2008
- Adgenital sclerites absent, only a single opening of gv2 present....................................... Microzercon Błaszak, 1976
11. Peritrematal setae p1 pilose, p2 short and smooth...................................................................................................... 12
- Peritrematal setae p1 short and smooth, p2 longer..................................................................................................... 15
12. Posterolateral ends of peritrematal shield connected to ventri-anal shield........................ Cosmozercon Błaszak, 1981
- Posterior ending of peritrematal shield free................................................................................................................ 13
13. Peritremes extremely long, reaching beyond the insertion of p2....................................... Echinozeron Błaszak, 1976
- Peritremes medium-sized, not reaching the level of p2.............................................................................................. 14
14. Posterolateral ends of peritrematal shield separated by a narrow slit, as a pair of free ventro-lateral shields; margin of opisthonotum with nine pairs of setae...................................................................................... Krantzas Błaszak, 1981
- Free ventro-lateral shields absent; margin of opisthonotum with eight pairs of setae.......... Allozercon Błaszak, 1984
15. Margin of opisthonotum usually with 16 pairs of setae .................................................. Caurozercon Halašková, 1977
- Margin of opisthonotum with eight pairs of setae...................................................................................................... 16
16. Adgenital sclerites present ................................................................................................... Hypozercon Błaszak, 1981
- Adgenital sclerites absent........................................................................................................................................... 17
17. Peritrematal setae p2 smooth; one pair of adgenital gland openings present; ventri-anal shield with 17 setae (Vl1 present) ........................................................................................ Paleozercon Błaszak, Cokendolpher & Polyak, 1995
- Peritrematal setae p2 pilose; adgenital gland openings absent; ventri-anal shield with 15 setae (Vl1 absent)............. .................................................................................................................................................... Boreozercon gen. nov.
18. Peritrematal shield posteriorly truncated .................................................................... Skeironozercon Halašková, 1977
- Posterolateral ends of peritrematal shield expanded posteriorly................................................................................ 19
19. Setae p1 and p2 pilose; adgenital sclerites and gland openings absent .....................................Aspar Halašková, 1977
- Setae p1 and p2 smooth; 2–3 pairs of adgenital gland openings on conspicuous adgenital sclerites present............ 20
20. Posterior margin of opisthonotum with six pairs of setae .................................................. Parhozercon Błaszak, 1981
- Posterior margin of opisthonotum with seven pairs of setae .............................................. Parazercon Trägårdh, 1931
Notes
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Linked records
Additional details
Identifiers
Related works
- Is part of
- Journal article: 10.5281/zenodo.196913 (DOI)
- Journal article: http://publication.plazi.org/id/FF9FFFA2FFDFFFF3FFD7FFABFFB50163 (URL)
- Is source of
- https://sibils.text-analytics.ch/search/collections/plazi/03A687DAFFC6FFEAFF40FEDCFA290634 (URL)
Biodiversity
- Family
- Zerconidae
- Kingdom
- Animalia
- Order
- Mesostigmata
- Phylum
- Arthropoda
- Taxon rank
- family
References
- Blaszak, C. (1984) Three new genera of zerconid mites (Acari, Mesostigmata, Zerconidae) from the United States of America with a key to the American genera. Polish Journal of Entomology, 53, 587 - 601.
- Halaskova, V. (1963) Mixozercon, n. g., a new genus of the family Zerconidae (Acari). Acta Universitatis Carolinae - Biologica, 2, 203 - 208.
- Koch, C. L. (1836) Deutschlands Crustaceen, Myriapoden und Arachniden: In: Panzer, G. W. F. (Ed.), Herrich-Schaeffer's ein Beitrag zur deutschen Fauna, Heft 4. F. Pustet, Regensburg.
- Halaskova, V. (1977) A revision of the genera of the family Zerconidae (Acari: Gamasides) and descriptions of new taxa from several areas of Nearctic Region. Studie C SAV, Praha, 7, 1 - 74.
- Sikora, B. & Skoracki, M. (2008) Blaszakiella americana gen. et sp. nov. A new zerconid mite (Acari: Zerconidae) from North America. Annales Zoologici, 58, 251 - 254.
- Blaszak, C., Cokendolpher, J. C. & Polyak, V. J. (1995) Paleozercon cavernicolus, n. gen., n. sp., fossil mite from a cave in the Southwestern U. S. A (Acari, Gamasida: Zerconidae), with a key to Nearctic genera of Zerconidae. International Journal of Acarology, 21, 253 - 259.
- Tragardh, I. (1931) Terrestrial Acarina. Zoology of the Faroes, 2 (49), 1 - 69.