Cosmolaelaps markewitschi (Pirianyk),

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: 483

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Cosmolaelaps markewitschi (Pirianyk)


Cosmolaelaps markewitschi (Pirianyk) 

( Figures 26–34View FIGURES 26–34)

Laelaspis markewitschi Pirianyk, 1959: 97  .

Laelaspis markewitschi  .— Reitblat, 1963: 81; Lapina, 1976: 52; Bregetova, 1977: 547.

Hypoaspis markewitschi  .— Shcherbak, 1971b: 29.

Gymnolaelaps markewitschi  .— Joharchi et al., 2012: 2013; Moreira et al., 2014: 276.

Cosmolaelaps markewitschi  .— Nemati & Gwiazdowicz, 2016: 545 View Cited Treatment .

Specimens examined. Eight females and four males, Kostanay Region, Kazakhstan, 53°15ʹN, 66°26ʹE, 19 October 2019, A.K. Issakova coll., from soil (in TSUMZ)GoogleMaps  .

Remarks. The different generic placement presented above shows that most authors could not decide on the correct generic placement of this species. Pirianyk (1959) described Laelaspis markewitschi  as a new species from specimens collected on rodents in Ukraine and is now recorded from Kazakhstan for the first time, from soil. Shcherbak (1971b) considered this species belongs to Hypoaspis  sensu lato. Then, Joharchi et al. (2012) excluded this species from Laelaspis  due to the absence of the characteristic ornamentation of the genital shield, and transferred it to Gymnolaelaps  . Nemati & Gwiazdowicz (2016) treated this species as a member of Cosmolaelaps  due to shape of dorsal setae which all have a small basal protuberance. We also confirm this diagnostic character in newly collected specimens from Kazakhstan ( Fig. 26View FIGURES 26–34), so we here follow Nemati & Gwiazdowicz (2016) since the species includes the diagnostic character states of Cosmolaelaps  (see Moreira et al., 2014). Cosmolaelaps markewitschi  is closely related to Cosmolaelaps lutegiensis  (e.g. the reticulation pattern of the genital shield similar, genital shield extending close to anal shield; shape of dorsal setae are similar; anterior edge of epistome irregularly denticulate and palptarsal claw two-tined, etc.), but it differs from C. lutegiensis  by the 40 pairs of dorsal setae (22 pairs of podonotal setae and 17 pairs of opisthonotal setae, including three pairs of Zx setae, see Fig. 26View FIGURES 26–34), while in C. lutegiensis  the dorsal shield bears 38 pairs of setae (22 pairs of podonotal setae, and 16 pairs of opisthonotal setae, including just one pair of Zx setae); the genital shield is widened behind coxae IV in C. markewitschi  ( Fig. 27View FIGURES 26–34), while in C. lutegiensis  it is not markedly widened; fixed digit of chelicera with 5–6 teeth in C. markewitschi  ( Fig. 32View FIGURES 26–34), while three in C. lutegiensis  ; insemination structures distinctive and apparently sclerotised (sacculus circular shape, the proximal ends of the tubulus slightly swollen at junction with ramus) in C. markewitschi  ( Fig. 28View FIGURES 26–34), while not distinctive in C. lutegiensis  , apparently unsclerotised; posterior margin of genital shield more or less truncate in C. markewitschi  ( Fig. 27View FIGURES 26–34), while rounded in C. lutegiensis  ; posterior margin sternal shield concave in C. markewitschi  ( Fig. 27View FIGURES 26–34), while more or less straight in C. lutegiensis  .














Cosmolaelaps markewitschi (Pirianyk)

Joharchi, Omid, Issakova, Aigerim K., Asyamova, Olga S., Sarcheshmeh, Mohammadhassan Abbasi & Tolstikov, Andrei V. 2020

Cosmolaelaps markewitschi

Nemati, A. & Gwiazdowicz, D. J. 2016: 545

Gymnolaelaps markewitschi

Moreira, F. G. & Klompen, H. & de Moraes, G. J. 2014: 276
Joharchi, O. & Halliday, B. & Saboori, A. 2012: 2013

Hypoaspis markewitschi

Shcherbak, G. I. 1971: 29

Laelaspis markewitschi

Bregetova, N. G. 1977: 547
Lapina, I. 1976: 52
Reitblat, A. G. 1963: 81

Laelaspis markewitschi

Pirianyk, G. I. 1959: 97