Eustigmaeus segnis (Koch, 1836) (Stigmaeidae) (Fig. 1) has a widespread distribution and was recorded from many countries including Turkey (Fan et al. 2016; Doğan et al. 2018a; Doğan 2019). This species can be recognized by having dorsal dimples in uniform size, dorsal body setae long, falciform with marginal spinules, dorsal setae c1 widely spaced in both sexes, metasternal shield fused with (Fig. 2A) or partly separated from endopodal shields (Fig. 2B) in female and a pair of aggenital setae in both sexes (Doğan 2005; Bayrak et al. 2019).
Bayrak, N., Doğan, S., Uğurlu, Ş. & Doğan, S. (2019) Morphometric character analysis of different populations of Eustigmaeus segnis (Koch) (Acari: Stigmaeidae) in Turkey—A preliminary study. 8th International Conference on Mathematics, Engineering, Natural & Medical Sciences, 5–8 September 2019, Erzurum, Turkey, pp. 8–22.
Bingül, M., Doğan, S. & Doğan, S. (2017) Morphological abnormalities in some stigmaeid species of Eustigmaeus, Stigmaeus and Storchia (Acari: Raphignathoidea: Stigmaeidae). Systematic and Applied Acarology, 22, 2119–2126. https://doi.org/10.11158/saa.22.12.7
Doğan, S. (2005) Eustigmaeus mites from Turkey (Acari: Stigmaeidae). Journal of Natural History, 39, 835–861. https://doi.org/10.1080/00222930400001558
Doğan, S. (2019) Raphignathoidea (Acari: Trombidiformes) of Turkey: A review of progress on the systematics, with an updated checklist. Acarological Studies, 1, 129–151.
Doğan, S., Doğan, S. & Bingül, M. (2018a) The discovery of pharate female of Eustigmaeus segnis (Koch) (Acari: Stigmaeidae) in its deutonymphal integument. Plant Protection Bulletin, 58, 41–46. (In Turkish) https://doi.org/10.16955/bitkorb.335656
Doğan, S., Doğan, S., Bingül Türk, M. & Erman, O. (2018b) Morphological variations observed in the cosmopolitan mite species Eustigmaeus segnis (Koch) (Acari: Stigmaeidae). XV. International Congress of Acarology (XV ICA), 2–8 September 2018, Antalya, Turkey, p. 236.
Fan, Q.-H., Flechtmann, C.H.W. & Moraes, G.J. de (2016) Annotated catalogue of Stigmaeidae (Acari: Prostigmata) with a pictorial key to genera. Zootaxa, 4176, 1–199. https://doi.org/10.11646/zootaxa.4176.1.1
Koch, C.L. (1836) Deutschland Crustaceen, Myriapoden und Arachniden. F. Pustet, Regensburg, 90 pp. (In German)