Spinturnix von Heyden 1826
Creators: name: Orlova, Maria V.
name: Anisimov, Nikolay V.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Spinturnicidae
Spinturnix

description: Key to species of the genus Spinturnix of Russia and adjacent countries (females)   
 1. Sternal shield rounded, with one pair of setae................................. Spinturnix senkevitchi sp. nov.   
– Sternal shield drop-shaped or pentagonal, without setae or with three pairs of setae.................... 2  
2. With 3–7 pairs of dorsal setae posterior to stigmata...................................................................... 3  
– With more than 20 dorsal setae posterior to stigmata.................................................................... 5  
 3. With 6–7 pairs of dorsal setae posterior to stigmata; lanceolate seta on dorsal tip of tarsi II–IV present...................................................................................................... S. plecotina (Koch, 1839)   
– With 3–4 pairs of dorsal setae; lanceolate seta on tarsi II–IV absent.............................................. 4  
 4. Two pairs of long setae and two pairs of short setae at the end of dorsal opisthosoma; tritosternum discoidal............................................................................................. S. kolenatii Oudemans, 1910   
 – Three pairs of short setae on at the end of dorsal opisthosoma; tritosternum jar-shaped.................................................................................................................................... S. bakeri Rudnick, 1960   
5. With less than 50 dorsal setae posterior to stigmata...................................................................... 6  
– With more than 50 dorsal setae posterior to stigmata.................................................................. 11  
 6. Tritosternum is large, mushroom-shaped; some dorsal setae of legs I–II serrated................................................................................................................................................. S. psi (Kolenati, 1856)   
– Tritosternum not mushroom-shaped or small and difficult to observe; setae of legs I-II are smooth......................................................................................................................................................... 7  
7. With 40 or more dorsal setae.......................................................................................................... 8  
– With less than 40 dorsal setae........................................................................................................ 9  
 8. Sternal shield with a pattern of large-sized cells, with three pairs of setae; tritosternum difficult to observe....................................................................................... S. bregetovae Stanyukovich, 1995   
 – Sternal shield with small reticulate pattern, lacking setae; tritosternum distinct, small and rounded..................................................................... S. acuminata helvetiae Deunff, Keller & Aellen, 1986   
 9. Dorsal shield diamond-shaped, rounded; posterior margin of sternal shield rounded................................................................................................. S. nobleti Deunff, Volleth, Keller & Aellen, 1990   
– Dorsal shield ovate; posterior margin of sternal shield almost straight....................................... 10  
 10. Anterior and posterior ends of dorsal shield with a large rounded projection each; podosomal setae about two times shorter than opisthosomal setae..... S. acuminata acuminata (Koch, 1836)   
 – Dorsal shield with a single large anterior rounded projection, smoothly narrowed posteriorly; podosomal setae and opisthosomal seta subequal........................ S. punctata (Sundevall, 1833)   
 11. Sternal shield pentagonal...................................................... S. maedai Uchikawa & Wada, 1979   
– Sternal shield drop-shaped......................................................................................................... 12  
12. Genital setae off genital shield; dorsal setae 90–130................................................................. 13  
– Genital setae on genital shield; dorsal setae 70–90.................................................................... 14  
 13. Dorsal opisthosomal setae 100–130, dorsal shield large (more than 800 µm).............................................................................................................................................. S. myoti (Kolenati, 1856)   
 – Dorsal opisthosomal setae 80–100, dorsal shield small (less than 800 µm)........................................................................................................... S. uchikawai Orlova, Zhigalin & Zhigalina, 2015   
 14. Marginal dorsal opisthosomal setae longer than other opisthosomal setae; tritosternum distinct....................................................................................................... S. emarginata (Kolenati, 1856)   
 – Marginal dorsal opisthosomal setae subequal to other opisthosomal setae............................................................................................................................................. S. mystacin (Kolenati, 1857)
description: Published as part of Orlova, Maria V. & Anisimov, Nikolay V., 2023, Three new species of bat-parasitic gamasid mites of the genera Spinturnix, Macronyssus and Steatonyssus (Acari: Mesostigmata: Spinturnicidae, Macronyssidae) from Siberia and Mongolia, with keys to species of Russia and adjacent countries, pp. 211-239 in Persian Journal of Acarology 12 (2) on pages 215-216, DOI: 10.22073/pja.v12i2.76740, http://zenodo.org/record/8113590