THE IDENTITY AND TYPE SPECIMENS OF COLLOHMANNIA ASIATICA (ACARI, ORIBATIDA, COLLOHMANNIIDAE)

About authors:

Sidorchuk E.A., Paleontological Institute, Russian Academy of Sciences, Moscow 117997, Russia

Norton R.A., State University of New York, College of Environmental Science and Forestry, Syracuse, New York, USA

Annotation:

Three extant species of the oribatid mite genus Collohmannia (Collohmanniidae) have been named, of which two,C. gigantea Sellnick, 1922 and C. johnstoni Norton et Sidorchuk, 2014, are well known. The third—C. asiatica Krivolutsky et Christov, 1970—is known only from a brief, insufficient original description. Our purpose was to study and illustrate the slidemounted and damaged type series of C. asiatica (male holotype, male and female paratypes) from Tajikistan and to redescribe the species using as much morphological information as could be extracted. Based on 18 characters that vary among the three species, C. asiatica is more closely related to the European C. gigantea than to the North American C. johnstoni. Similarities of the two palaearctic species that we consider synapomorphous include two that are common to both sexes—tarsus I thickened and bearing six solenidia—and two that are male-specific: relatively short legs IV, and elongated distal setae (τd) on the spermatopositor.

Bibliography:

Christov, V. V. 1970. [New species of the oribatid mites
in the soils of Tajikistan]. In: E. M. Bulanova-
Zachvatkina, M. S. Gilyarov, D. A. Krivolutsky,
A. D. Petrova-Nikitina, I. S. Eitminavičiũtė, and
A. M. Aukshtikalnene (Eds). Oribatidy (Oribatei),
ikh rol v pochvoobrazovatel’nykh processakh
[Oribatei and their role in the process of soil formation].
Vilnius: Academy of Sciences of the
Lithuanian SSR, pp. 155–160. [in Russian]

Grandjean F. 1964. La solénidiotaxie des Oribates.
Acarologia, 6: 529–556.
Grandjean, F. 1966. Collohmannia gigantea Selln.
(Oribate). Première partie. Acarologia, 8: 328–
357.

Norton, R. A. 2006. First record of Collohmannia (C.
schusteri n. sp.) and Hermannia (H. sellnicki n.
sp.) from Baltic amber, with notes on Sellnick’s
genera of fossil oribatid mites (Acari: Oribatida).
Acarologia, 46: 111–125.

Norton, R. A., and Behan-Pelletier, V. M. 2009. Chapter
15, Oribatida. In: G. W. Krantz and D. E. Walter
(Eds.). A Manual of Acarology, 3rd Edition.
Texas Tech University Press, Lubbock, pp. 421–
564.

Norton, R. A. and Sidorchuk, E. A. 2014. Collohmannia
johnstoni n. sp. (Acari, Oribatida) from West Virginia
(USA.), including description of ontogeny,
setal variation, notes on biology and systematics of
Collohmanniidae. Acarologia, 54: 271–334.

Norton, R. A. and Sidorchuk, E. A. 2015. Case 3674.
Collohmannia Sellnick, 1922 (Arachnida, Acari,
Oribatida): proposed conservation by giving it
precedence over the senior subjective synonym
Embolacarus Sellnick, 1919. Bulletin of Zoological
Nomenclature, 72: 33–40.

Pfingstl, T., Krisper, G. and Schuster, R. 2005. Morphological
analysis of the nymphal stages of Collohmannia
gigantea Sellnick (Acari: Oribatida,
Collohmanniidae). International Journal of Acarology,
31: 367–374.

Schuster, R. 1962. Nachweis eines Paarungszeremoniells
bei den Hornmilben (Oribatei, Acari). Naturwissenschaften,
49: 502.

Sellnick, M. 1919. Die Oribatiden der Bernsteinsammlung
der Universität Königsberg i. Pr. In: Schriften
der Physikalisch-ökonomischen Gesellschaft
zu Königsberg i. Pr., Leipzig und Berlin, B. G. Teubner,
pp. 21–42.

Sellnick, M. 1922. Milben der Sammlung des
Deutschen Entomologischen Instituts. I. Oribatidae.
Entomologische Mittelungen, 11: 18–20.
Sellnick, M. 1932. Oribatiden aus dem Karst. Zoologische
Jahrbücher, Abteilung für Systematik, 63:
701–714.

Sidorchuk, E. A. and Vorontsov, D. D. 2014. Computer-
aided drawing system—substitute for camera
lucida. Acarologia, 54: 229–239.

Štorkán, J. 1925. Prispevky ku znamostem o ceskych
Oribatidech (Acarina) [Additions to the knowledge
of Czech oribatids (Acarina)]. Spisy vydávané
Přírodovědeckou fakultou Karlovy University, 42:
1–40. [in Czech]

Travé, J. and Vachon, M. 1975. François Grandjean
1882-1975 (Notice biographique et bibliographique).
Acarologia, 17: 1-19.

Weigmann, G. 2006. Hornmilben (Oribatida). Die
Tierwelt Deutschlands, vol. 76. Goecke & Evers,
Keltern, 520 pp.