Gaeolaelaps nolli (Karg)

Joharchi, Omid, Issakova, Aigerim K., Asyamova, Olga S., Sarcheshmeh, Mohammadhassan Abbasi & Tolstikov, Andrei V., 2020, Some soil-inhabiting mites (Acari: Mesostigmata) from Kazakhstan, with description of a new species of Gaeolaelaps Evans & Till (Acari: Laelapidae), Zootaxa 4819 (3), pp. 473-498 : 490

Gaeolaelaps nolli (Karg)

( Figures 56–63 )

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.

Geolaelaps nolli .— Farrier & Hennessey, 1993: 73.

Hypoaspis (Gaeolaelaps) nolli .— Faraji et al., 2008: 207.

Gaeolaelaps nolli .— 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 Willmann. — Evans & Till, 1966: 173 (synonymy by Kavianpour et al., 2013); Kavianpour & Nemati, 2014: 321.

Gaeolaelaps praesternalis .— Joharchi et al., 2018: 24 (misidentification); Joharchi et al., 2019b: 81 (misidentification).

Specimens examined. 18 females and five males, Kostanay Region , Kazakhstan, 53°15ʹN, 66°27ʹE, 19 October 2019, A.K. Issakova coll., from soil (in TSUMZ) .

Remarks. Gaeolaelaps nolli was described from agricultural soil and grassland in Germany ( Karg, 1962) and is now recorded in Kazakhstan for the first time, from soil. The synonymy presented above reveals some confusion about the identity of this species as discussed by Joharchi & Negm (2020). This species is widespread in Europe and elsewhere but much of the information on this species has been published under the names Gaeolaelaps praesternalis or Hypoaspis (Gaeolaelaps) praesternalis . Chelebiev (1981, 1988a) has recorded G. praesternalis from Kazakhstan. This record could be a misidentification of G. nolli , but we have not had the opportunity to examine any specimens to confirm this identification. Our collected specimens agree very well with the description given by Evans & Till (1966) for H. praesternalis (misidentification of G. nolli ). The species is recognised by the 39 pairs of dorsal setae, sometimes reaching base of next posterior seta (22 pairs of podonotal setae and 17 pairs of opisthonotal setae), including two pairs of Zx setae between J and Z setae, seta j5 is shorter than distance between j5 and j6, and J2 is located directly posteriorly to J1 ( Fig. 56 ), sternal setae shorter, each not reaching the base of the next seta ( Fig. 57 ), lateral margins of epigynal shield not parallel-sided, widest area of the shield posterior to st5 level ( Fig. 57 ), anal shield subtriangular, large, anus positioned posteriorly ( Fig. 57 ), the length of the peritreme short, reaches to mid-level of coxa II ( Fig. 60 ), tarsus IV with two elongate pd2–3 setae ( Fig. 59 ), fixed digit of chelicera with an offset and subapical tooth (gabelzhan), followed by six variously sized teeth in female ( Fig. 61 ), the spermatodactyl of male curved upward, with a large distal knob, and its free section is shorter than the movable digit ( Fig. 62 ).

Figures

FIGURES 56–63. DIC micrographs of Gaeolaelaps nolli (Karg, 1962), female. 56, idiosoma in dorsal view; 57, idiosoma in ventral view; 58, subcapitulum; 59, leg IV; 60, posterior portion of peritrematal shield; 61, chelicera; male. 62, chelicera; 63, idiosoma in ventral view.