Hypoaspis nolli Karg, 1962: 62 Hypoaspis nolli Karg, 1965: 311 Costa , 1968: 9 Hypoaspis ( Hypoaspis ) nolli Karg, 1971: 169 1978: 16 Hypoaspis ( Geolaelaps ) nolli Karg, 1979: 80 1982: 239 1993: 140 2006: 148 Xu & Liang, 1996: 191 Hypoaspis ( Gaeolaelaps ) nolli Faraji et al ., 2008: 207 Gaeolaelaps nolli Farrier & Hennessey, 1993: 73 Beaulieu, 2009: 36 Bahrami et al ., 2011: 351 Trach, 2012: 162 Kavianpour et al ., 2013: 7 Nemati & Mohseni, 2013: 80 Kavianpour & Nemati, 2014: 321 Joharchi et al ., 2018: 24 Hypoaspis praesternalis Evans, 1953: 272 Hypoaspis ( Gaeolaelaps ) praesternalis Evans & Till, 1966: 173 Kavianpour et al ., 2013: 7 Kavianpour & Nemati, 2014: 321 Gaeolaelaps praesternalis Joharchi et al ., 2018: 24 Joharchi et al ., 2019b: 81 Hypoaspis nolli Karg, 1962 Soil-inhabiting mites of the family Laelapidae (Acari: Mesostigmata) from Assiut Governorate, Egypt Joharchi, Omid Negm, Mohamed W. Zootaxa 2020 2020-04-06 4759 4 488 510  Joharchi et al ., 2018: 24   Joharchi et al ., 2019b: 81  (Karg) Karg 1962 [151,454,1685,1712] Arachnida Laelapidae Gaeolaelaps GBIF Animalia Mesostigmata 10 498 Arthropoda species nolli   Figures 28–30.      Hypoaspis nolli Karg, 1962: 62.    Hypoaspis nolli.—  Karg, 1965: 311;   Costa, 1968: 9.    Hypoaspis( Hypoaspis) nolli.—  Karg, 1971: 169,  1978: 16.    Hypoaspis( Geolaelaps) nolli.—  Karg, 1979: 80,  1982: 239,  1993: 140,  2006: 148;  Xu & Liang, 1996: 191.    Hypoaspis( Gaeolaelaps) nolli.—  Faraji et al., 2008: 207.    Gaeolaelaps nolli.—  Farrier & Hennessey, 1993: 73;  Beaulieu, 2009: 36;  Bahrami et al., 2011: 351;  Trach, 2012: 162;  Kavianpour et al., 2013: 7;  Nemati & Mohseni, 2013: 80;  Kavianpour & Nemati, 2014: 321;  Joharchi et al., 2018: 24.    Hypoaspis praesternalis.—  Evans, 1953: 272(misidentification).  Hypoaspis( Gaeolaelaps) praesternalis.—  Evans & Till, 1966: 173(synonymy by  Kavianpour et al., 2013: 7);  Kavianpour & Nemati, 2014: 321.    Gaeolaelaps praesternalis.—  Joharchi et al., 2018: 24(misidentification);  Joharchi et al., 2019b: 81(misidentification).  Specimens examined.  Holotype  Hypoaspis nolli Karg, 1962: ZMB Kat. Nr.40849, Versuchsfeld Kleinmachnow d. Berlin,  17.08.1957. Onefemale; 27°11’ N, 31°09’ E, Assiut University, Assiut;  15 May 2016; coll. M.W. Negm; ex. soil.   Remarks.  Gaeolaelaps nolliwas described from agricultural soil and grassland in Germany( Karg, 1962). It is now recorded in Egyptfor the first time, from soil. The synonymy presented above reveals some confusion about the identity of this species. Much of the information on this species has been published under the names  Gaeolaelaps praesternalisor  Hypoaspis( Gaeolaelaps) praesternalis. The original description of  Hypoaspis praesternalisby Willmann (1949)is brief, and both the description and illustrations lack some important details. The description of  Hypoaspis nolli Karg, 1962is more detailed, but does not include a direct comparison with  H. praesternalis.  Evans & Till (1966)synonymised these two species, but did not provide any explanation for that decision, and did not give details of the specimens they examined. This has probably led to the ambiguity about the identification of these two different species. Karg (1993)included both species in his key to species of  Hypoaspis( Geolaelaps). The first author had the chance to examine both species in Karg’s collection which deposited in the Museum für Naturkunde Berlinin Germany. Thus, we can easily distinguish between these two species as follows: 1- size of body in  G. nolliis larger than  G. praesternalis( Figs 28 & 31). 2- dorsal shield setae short, none of them reach to base of next setae in  G. praesternaliswhile much longer in  G. nolli(some setae in the opisthonotal region long enough to reach the base of the next posterior setae) ( Figs 28 & 31). 3- ornamentation of genital shield, posterior eight irregular cells flanked by a median inverse Y-shaped ornamentation in  G. nolliwhile in  G. praesternaliswith the same inverse Y-shaped ornamentation medially but almost completely smooth (or faintly reticulated) posteriorly ( Figs 29 & 32). 4- the length of the peritreme short, reaches to mid-level of coxa II in  G. nolliwhile much longer in  G. praesternalis(reaches at least to anterior level of coxa I) ( Figs 30 & 33). 5- tarsus IV with two very long setae pd2, pd 3in  G. nolliwhile tarsus IV without any long setae in  G. praesternalis( ad2and ad3longer than other setae on segment). We have been unable to locate the holotypeof  H. praesternalis. It is not present in the Willmann collection in the Zoologische Staatssammlungen, München (Stefan Friedrich, pers. comm.). The information on morphological characters of  G. praesternalisis based on the two females (ZMB Kat. Nr. 41038 & ZMB Kat. Nr. 41054) from Germanyin museum für naturkunde, Berlin, Germany, identified by Prof. Dr. habil. Wolfang Karg as  Hypoaspis praesternalis Willmann, 1949. 2595809638 1957-08-17 2016-05-15 1957-08-17 ZMB Kat. Nr. & One & M. W. Negm 27.183332 University 1238 31.15 11 499 1 Berlin holotype