Summary
The prosomal glands of Tetranychus urticae (Acari, Tetranychidae) were examined light and electron microscopically. Five paired and one unpaired gland are found both in females and males. The silk spinning apparatus consists of paired silk glands which extend laterally on both sides of the esophagus into the pedipalps. There, they enter the terminal silk gland bag which opens into a silk bristle at the apex of the pedipalps. The salivary secretions are formed in three paired glands which have an interconnecting duct, the podocephalic canal. The dorsal podocephalic glands may produce a serous secretion, the anterior podocephalic glands a mucous secretion, and the coxal organ may add a liquid, ion-rich secretion. These secretions pass the podocephalic canal and reach the mouth at the apex of the gnathosome. The function of the paired tracheal organs and the unpaired tracheal gland is still unclear. The tracheal gland may produce a secretion which facilitates the movement of the fused chelicerae and the stylets.
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References
Alberti G, Storch V (1974) Über Bau und Funktion der Prosomadrüsen von Spinnmilben (Trombidiformes). Z Morphol Tiere 79:133–153
Alberti G, Storch V (1977) Zur Ultrastruktur der Coxaldrüsen actinotricher Milben (Acari, Actinotrichida). Zool Jb Anat 98:394–425
Anwarullah AM (1963) Beiträge zur Morphologie und Anatomie einiger Tetranychiden (Acari, Tetranychidae). Z Angew Zool 50:385–426
Balashow YS (1972) A translation of bloodsucking ticks (Ixodoidea) — Vectors of disease of man and animals. Misc Publ Entomol Soc Am 8:161–376
Blauvelt WE (1945) The internal morphology of the common red spider mite. Mem Cornell Univ Agric Sta Ithaca 270:1–35
Cone WW, Pruszynski S (1972) Pheromone studies of the two spotted spider mite. 3 Response of males to different plant tissues, age, searching area, sex ratios, and solvents in bioassay trials. J Econ Entomol 65:74–77
Ehara S (1960) Comparative studies on the internal anatomy of three Japanese trombidiform acarinids. J Fac Sci Hokkaido Univ Ser 6 Zool 14:410–434
Gasser R (1951) Zur Kenntnis der gemeinen Spinnmilbe Tetranychus urticae. I. Mitt. Morphologie, Anatomie, Biologie, Ökologie. Mitt Schweiz Entomol Ges 24:217–262
Johnson B (1963) A histological study of neurosecretion in aphids. J Insect Physiol 9:727–739
Johnson B (1965) Premature breakdown of the prothoracic glands in parasitized aphids. Nature 206:958–959
Krantz GW (1978) A manual of acarology. Oreg State Univ Book Stores Inc Corvallis 1978
Liesering R (1960) Beitrag zum phytopathologischen Wirkungsmechanismus von Tetranychus urticae (Acari, Tetranychidae). Z Pflanzenkrankh Pflanzenschutz 67:524–542
McEnroe WD, Dronka K (1971) Photobehavioural classes of the spider mite Tetranychus urticae. Entomol Exp Appl 14:420–424
Mills LR (1973) Morphology of glands and ducts in the two spotted spider mite, Tetranychus urticae Koch. Acarologia 14:218–236
Moss WW (1962) Studies on the morphology of the trombidiid mite. Allothrombium lerouxi. Acarologia 4:313–345
Mothes U, Seitz KA (1980) Licht- und elektronenmikroskopische Untersuchungen zur Funktionsmor-phologie von Tetranychus urticae K (Acari, Tetranychidae) I. Exkretionssysteme. Zool Jb Anat 104:500–529
Mothes U, Seitz KA (1981a) Lichtund elektronenmikroskopische Untersuchungen zur Funktionsmorphologie von Tetranychus urticae K (Acari, Tetranychidae) II. Weibliches Geschlechtssystem und Oogenese. Zool Jb Anat 105:106–134
Mothes U, Seitz KA (1981 b) Functional microscopic anatomy of the digestive system of Tetranychus urticae (Acari, Tetranychidae). Acarologia 22 (in press)
Pinkstaff CA (1980) The cytology of salivary glands. Int Rev Cytol 63:141–261
Prasse J (1968) Zur Anatomie und Histologie der Acaridae mit besonderer Berücksichtigung von Caloglyphus berlesei (Michael 1903) und C. michaeli (Oudemans 1924). III. Die Drüsen und drüsenähnlichen Gebilde, der Podocephal-Kanal. Wiss Z Univ Halle Math Nat 17:629–646
Reynolds ES (1963) The use of lead citrate at high pH as an electron-opaque stain in electron microscopy. J Cell Biol 17:208
Soloff BL (1973) Buffered potassium permanganate — uranyl acetate — lead citrate staining sequence for ultrathin sections. Stain Technol 48:159–165
Spurr AR (1969) A low viscosity epoxy resin embedding for electron microscopy. J Ultrastr Res 26: 31–43
Storms JJH (1971) Some physiological effects of spider mite infestations on bean plants. Neth J Plant Pathol 77:154–176
Tandler B, MacCallum DK (1972) Ultrastructure and histochemistry of the submandibular gland of the European hedgehog, Erinaceus europaeus L. I. Acinar secretory cells. J ltrastr Res 39:186–204
Wiesmann R (1968) Untersuchungen über die Verdauungsvorgänge bei der gemeinen Spinnmilbe Tetranychus urticae Koch. Z Angew Entomol 61:457–465
Woodring JP (1973) Comparative morphology, function and homologies of the coxal gland of oribatid mites (Arachnida, Acari). J Morphol 139:407–429
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This study was financed by a grant from the Deutsche Forschungsgemeinschaft (DFG Se 162/12)
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Mothes, U., Seitz, K.A. Fine structure and function of the prosomal glands of the two-spotted spider mite, Tetranychus urticae (Acari, Tetranychidae). Cell Tissue Res. 221, 339–349 (1981). https://doi.org/10.1007/BF00216738
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DOI: https://doi.org/10.1007/BF00216738