Pachyseius

• Main Authors: Özbek, Hasan Hüseyin, Halliday, Bruce
• Format: Text
• Language: unknown
• Published: Zenodo 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Arachnida; Mesostigmata; Pachylaelapidae; Pachyseius; Halliday; Hyatt; Seta; Mite; Siberia
• Online Access: https://dx.doi.org/10.5281/zenodo.6093711; https://zenodo.org/record/6093711

Key to females of the world species of Pachyseius 1. Peritrematal shields fused with exopodal shields II–IV or only exopodal shields IV................................. 2 - Peritrematal shields free, not fused with exopodal shields..................................................... 10 2. Dorsal shield bearing 29 pairs of setae, z 1 absent............................................................. 3 - Dorsal shield bearing 30 pairs of setae, z 1 present............................................................ 4 3. Most dorsal shield setae with expanded spatulate tips, ventri-anal shield with two pairs of setae...................................................................................................... P . cavernicola Ishikawa, 1989 - All dorsal shield setae fine, pointed, needle-like, ventri-anal shield with three pairs of setae........... P . destitutus sp. nov. 4. Anterior margin of sternal shield with a pair of pointed horn-like projections anterior to setae st 1 ...................... 5 - Anterior margin of sternal shield straight or curved, but without a pair of horn-like projections........................ 7 5. Opisthogastric soft integument between peritrematal shields and anterolateral margins of ventri-anal shield without any plate- lets; anterior margin of epistome truncate; small species, length described as 526 Μm...................................................................................................... P . huanrenensis Chen, Bai & Gao, 2009 - Opisthogastric soft integument between peritrematal shields and anterolateral margins of ventri-anal shield with platelets; anterior margin of epistome triangular and pointed; larger species, length more than 600 Μm............................. 6 6. Lateral and opisthogastric soft integument with 11 pairs of setae; anterior margin of epistome not serrated, triangular, without a sharp point; one pair of distinct platelets present between peritrematal shields and anterolateral margins of ventri-anal shield; anterior dorsal shield setae long; j 3 longer than distance j 3 –j 4 j 4 longer than distance j 3 –j 4 z 5 longer than distance z 5 –z 6 ............................................................................ P . sinicus Yin, Lu & Lan, 1986 - Lateral and opisthogastric soft integument with five pairs of setae; anterior margin of epistome serrated, triangular, produced into a sharp point; two pairs of distinct platelets present between peritrematal shields and anterolateral margins of ventri-anal shield; anterior dorsal shield setae short; j 3 shorter than distance j 3 –j 4 j 4 shorter than distance j 3 –j 4 z 5 shorter than distance z 5 –z 6........................................................................ P . chenpengi Ma & Yin, 2000 7. Metasternal plates fused with sternal shield to form a sternal-metasternal complex bearing four pairs of setae........................................................................................ P . morazae Mašán & Mihál, 2007 - Metasternal setae on separate metasternal plates, sternal shield with three pairs of setae.............................. 8 8. Metapodal plates greatly expanded and ornamented, widest anteriorly, their anterior ends abutting exopodal plates IV.......................................................................... P . pachylaelapoides Mašán & Mihál, 2007 - Metapodal plates long and narrow, not greatly expanded, widely separated from ventri-anal and exopodal shields......... 9 9. Pre-sternal shields present; ventri-anal shield with three pairs of setae.................... P . cicaki Mašán & Mihál, 2007 - Pre-sternal shield absent; ventri-anal shield with four pairs of setae.......................... P . quadrigeminus sp. nov. 10. Ventri-anal shield with three pairs of setae................................................................. 11 - Ventri-anal shield with two pairs of setae.................................................................. 16 11. Almost all dorsal shield setae slightly spatulate............................................ P . iraola Moraza, 1993 - All dorsal shield setae fine and needle-like................................................................. 12 12. Pre-sternal area with a pair of well-defined sclerotised pre-sternal plates, clearly separated from sternal shield by a strip of unsclerotised soft skin.................................................... P . crymophilus Mašán & Fenďa, 2014 - Pre-sternal area weakly granulate-reticulate; anterior margin of this weakly sclerotised area may be more distinct, but always connected to sternal shield by an area of granular ornamentation............................................... 13 13. Ventri-anal shield triangular, widest anterior to setae Jv 2 ...................................................... 14 - Ventri-anal shield oval-shaped, widest posterior to setae Jv 2 ................................................... 15 14. Metapodal shields closely abutting anterolateral margins of ventri-anal shield subequal in length and width (length/width: 0.96–1.07); lateral and ventral soft integument with nine pairs of setae................. P . wideventris Afifi & Nasr, 1984 - Metapodal shields and lateral margins of ventri-anal shield well separated; ventri-anal shield longer than wide (length/width: 1.08–1.28); lateral and ventral soft integument with eight pairs of setae...................... P . humeralis Berlese, 1910 15. Anterior dorsal shield setae short; j 3 not long enough to reach j 2 or edge of shield, z 2 not long enough to reach edge of shield; anterior end of peritreme clearly extending beyond gdj 3 ornamentation on ventri-anal shield punctate-lineate over entire shield.................................................................... P . masani Özbek & Halliday, 2014 - Anterior dorsal shield setae long; j 3 long enough to reach j 2 and edge of shield, z 2 long enough to reach edge of shield; anterior end of peritreme level with gdj 3 ornamentation on ventri-anal shield very faint or absent in central area of shield............................................................................................ P . slavicus Mašán, 2007 16. Metapodal plates small and oval, fused with and partly enclosed by edges of ventri-anal shield.................................................................................................... P . strandtmanni Solomon, 1982 - Metapodal plates much longer than wide, not fused to ventri-anal shield, posterior ends may be abutting ventri-anal shield. 17 17. Distinct pre-sternal shields present....................................................................... 18 - Distinct pre-sternal shields absent........................................................................ 20 18. Peritrematal shield posteriorly truncated, not expanded at level of stigma; large post-stigmatal pore located posterior to stigma; lateral and opisthogastric soft integument with 19 pairs of setae.................... P . siranensis Özbek & Halliday, 2014 - Peritrematal shield posteriorly not truncated, and expanded at level of stigma; large post-stigmatal pore located lateral to stigma; lateral and opisthogastric soft integument with 11–12 pairs of setae....................................... 19 19. Tarsus II with two spur-like setae, lateral and opisthogastric soft integument with 11 pairs of setae.................................................................................................. P . anisimovi Marchenko, 2015 - Tarsus II with one spur-like setae, lateral and opisthogastric soft integument with 12 pairs of setae.................................................................................................... P . orientalis Nikolsky, 1982 20. Posterior ends of peritrematal shields not reaching posterior level of exopodal plates IV............................. 21 - Posterior ends of peritrematal shields reaching posterior level of exopodal plates IV................................ 22 21. Ventri-anal shield wide anteriorly, narrower posterior to setae Jv 2 ............................ P . morenoi Moraza, 1993 - Ventri-anal shield narrow anteriorly, widest posterior to setae Jv 2 ...................... P . angustiventris Willmann, 1935 22. Anterior half of ventri-anal shield clearly wider than posterior half, its postero-lateral margins concave; epistome anteriorly narrowed, cone-shaped; tarsus II one spur-like seta....................................... P . friedrichi Mašán, 2008 - Anterior half of ventri-anal shield only slightly wider than posterior half, its lateral margins convex; epistome anteriorly truncated; tarsus II two spur-like setae...................................................... P . angustus Hyatt, 1956 : Published as part of Özbek, Hasan Hüseyin & Halliday, Bruce, 2015, Two new species of Pachyseius Berlese (Acari: Pachylaelapidae) from Turkey, with a key to the world species, pp. 98-108 in Zootaxa 3957 (1) on pages 104-105, DOI: 10.11646/zootaxa.3957.1.8, http://zenodo.org/record/236432 : {"references": ["Ishikawa, K. (1989) Occurrence of Pachyseius (Acarina, Gamasida, Pachylaelapidae) in a limestone cave of Japan. Journal of the Speleological Society of Japan, 14, 28 - 31.", "Chen, W. - P., Bei, N. - X. & Gao, P. (2009) Two new species of the family Pachylaelapidae Berlese, from China (Acari, Mesostigmata). Acta Zootaxonomica Sinica, 34, 25 - 27.", "Yin, S. - G., Lu, C. - J. & Lan, W. - H. (1986) A new species and a new record of the genus Pachyseius from China (Acarina: Pachylaelapidae). Acta Zootaxanomica Sinica, 11, 191 - 193.", "Ma, L. - M. & Yin, X. - Q. (2000) Two new species of the family Pachylaelaptidae (Acari: Gamasina). Acta Entomologica Sinica, 43, 94 - 97.", "Masan, P. & Mihal, I. (2007) New mites of the genus Pachyseius Berlese from Bulgaria (Acari: Pachylaelapidae). Zootaxa, 1485, 59 - 68.", "Moraza, M. L. (1993) Two new species of Pachyseius Berlese, 1910 from Spain (Acari, Mesostigmata: Pachylaelapidae). Acarologia, 34, 89 - 94.", "Masan, P. & Fenda, P. (2014) A new edaphic mite of the genus Pachyseius (Acari, Mesostigmata, Pachylaelapidae) from Fagaras Mountains (Romania), with a key to world species. Systematic & Applied Acarology, 19, 137 - 143.", "Afifi, A. M. & Nasr, A. K. (1984) Description of Pachyseius wideventris, a new species from Holland (Acari - Gamasida - Pachylaelapidae). Bulletin of the Zoological Society of Egypt, 34, 5 - 10.", "Berlese, A. (1910) Lista di nuove specie e nuovi generi di Acari. Redia, 6, 242 - 271.", "Ozbek, H. H. & Halliday, B. (2014) Two new species of Pachyseius Berlese (Acari: Pachylaelapidae) from Turkey, with a key to the world species. Zootaxa, 3841 (1), 107 - 116. http: // dx. doi. org / 10.11646 / zootaxa. 3841.1.5", "Solomon, L. (1982) A new Pachyseius species (Acari: Mesostigmata) and a new one for the Romanian fauna. Revue Roumaine de Biologie, Serie de Biologie Animale, 27, 99 - 102.", "Marchenko, I. I. (2015) A new species of Pachyseius Berlese (Acari: Pachylaelapidae) from South Siberia (Russia), with a key to the species known from Asia. Zootaxa, 3905 (2), 221 - 232. http: // dx. doi. org / 10.11646 / zootaxa. 3905.2.4", "Nikolsky, V. V. (1982) New species of gamasid mites (Gamasoidea, Parasitiformes). Novye i Maloizvestnye Vidy Fauny Sibiri, 16, 14 - 19.", "Willmann, C. (1935) Exploration biologique des cavernes de la Belgique et du Limbourg Hollandais. XXVe contribution: Acari. (1). Bulletin du Musee royal d'Histoire Naturelle de Belgique, 11 (29), 1 - 41.", "Masan, P. (2008) Pachyseius friedrichi, spec. nov., a new pachylaelapid mite from Bavarian Prealps Mts., Germany (Acari, Mesostigmata, Gamasida, Eviphidoidea, Pachylaelapidae). Spixiana, 31, 177 - 182.", "Hyatt, K. H. (1956) British mites of the genus Pachyseius Berlese, 1910 (Gamasina - Neoparasitidae). Annals and Magazine of Natural History, Series 12, 9, 1 - 6."]}