Experimental and Applied Acarology

, Volume 61, Issue 1, pp 1–30 | Cite as

Description of a new relict eriophyoid mite, Loboquintus subsquamatus n. gen. & n. sp. (Eriophyoidea, Phytoptidae, Pentasetacini) based on confocal microscopy, SEM, COI barcoding and novel CLSM anatomy of internal genitalia

  • Philipp E. ChetverikovEmail author
  • Tatjana Cvrković
  • Biljana Vidović
  • Radmila U. Petanović


A new pentasetacine mite Loboquintus subsquamatus n. gen. & n. sp. was found living under scale-like leaves of 2–3 years old twigs of Cupressus sempervirens in Montenegro. This mite species possesses a number of morphological features (uncommon teardrop-shaped body, traits of prosoma, atypical primitive anatomy of the genital apparatus and morphological traits of immatures) which clearly distinguish it from all other known eriophyoids. Adults of L. subsquamatus have seta vi situated on the anterior margin of a uniquely elongate lingua-like thin frontal lobe, three pits on the posterior prodorsal shield margin, a remarkable tube-like structure in the basal part of gnathosoma, a complicated three-layered epigynium, spermathecae directed antero-laterad, short spermathecal tubes and setae eu suppressed in males and possibly expressed in females. External genitalia of males and females of L. subsquamatus are fundamentally similar. Hypothesized remnants of coxisterna III or IV (forming a postgenital plate) are remarkably distinct in males. Two new morphometrical variables are proposed to supplement the CLSM protocol for description of internal genitalia of eriophyoids proposed by Chetverikov et al. (Zootaxa 3560:41–60, 2012b): (a) the length of ventral projection of the transvers genital apodeme and (b) the length of the posterior (=postspermathecal) part of the longitudinal bridge which in L. subsquamatus is remarkably long, whereas in many other eriophyoids it is reduced.


CLSM COI Internal genitalia Eriophyoid phylogeny Phytophagy 



We sincerely thank Prof. James W. Amrine (West Virginia University, Morgantown, USA), Dr. Evert E. Lindquist (Agriculture and Agri-Food Canada, Ottawa) and Dr. Sogdiana I. Sukhareva (Department of Invertebrate Zoology, Saint-Petersburg State University, Russia) for their critical comments on earlier drafts of manuscript. We are grateful to Dr. H. Dastych (Zoologisches Museum of Universität Hamburg, Deutschland) for loaning syntypes of rare mites Pentasetacus araucariae and to Drs. Charnie Craemer (ARC-Plant Protection Research Institute, Pretoria, South Africa), Ronald Ochoa and Gary R. Bouchan (USDA-ARS, Beltsville, MD, USA) for pertinent scientific on-line discussions on SEM techniques for studying eriophyoids and examples of colorized SEM images of mites. This work was partly supported by research grants of the Russian Foundation For Basic Research (RFBR research project # 12-04-31016_mol_a), Saint-Petersburg State University (Grant # and Ministry of Science and Environment of the Republic of Serbia (Grant # III 43001).


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Philipp E. Chetverikov
    • 1
    • 2
    Email author
  • Tatjana Cvrković
    • 3
  • Biljana Vidović
    • 4
  • Radmila U. Petanović
    • 4
  1. 1.Department of Invertebrate ZoologySaint-Petersburg State UniversitySt. PetersburgRussia
  2. 2.Zoological InstituteRussian Academy of SciencesSt. PetersburgRussia
  3. 3.Institute for Plant Protection and Environment BelgradeZemunSerbia
  4. 4.Department of Entomology and Agricultural Zoology, Faculty of Agriculture BelgradeUniversity of BelgradeZemunSerbia

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