Eur. J. Entomol. 102 (1): 89-95, 2005 | DOI: 10.14411/eje.2005.012

Structure of the cuticle of some ptyctimine oribatids (Acari: Oribatida)

Jaroslav SMRŽ
Department of Zoology, Charles University, Viničná 7, Prague 2, CZ-128 44, Czech Republic; e-mail: smrz@mbox.cesnet.cz

Abstract. The cuticle of Rhysotritia duplicita (Euphtiracaroidea: Euphtiracaridae), Phthiracarus sp., Steganacarus magnus, S. striculus and Tropacarus carinatus (all Phthiracaroidea: Phthiracaridae) was studied by light and transmission electron microscopy. A combination of light and electron microscopy were used to precisely characterize and classify the cuticular layers in oribatid mites and show how they differe in mites and other arthropods. In Rhysotritia duplicata the cuticle of the aspis (upper shield of the prosoma) differs significantly from that of the opisthosoma. Moreover, prosomal cuticle in this species is different from that of all others species studied. There were no structural differences in the cuticle of the prosoma and opisthosoma of species of the superfamily Phthiracaroidea (Phthiracarus, Steganacarus and Tropacarus) in spite of the differences in external apparence. Moreover, in Tropacarus, the rough sculpturing of the cuticle results from the very rough exocuticle, which is unlike the thick smooth cerotegument of the cuticle in Steganacarus.

Keywords: Cuticular layers, cerotegument, light microscopy, TEM, Acari, Oribatida, Euphthiracaroidea, Phthiracaroidea

Received: September 30, 2003; Revised: March 4, 2004; Accepted: April 13, 2004; Published: March 25, 2005  Show citation

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SMRŽ, J. (2005). Structure of the cuticle of some ptyctimine oribatids (Acari: Oribatida). EJE, 102(1), 89-95. doi: 10.14411/eje.2005.012
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