Mesothelae have venom glands

Mesothelae have venom glands

Although venom glands were described for the Mesothelae many years ago (Bristowe & Millot 1933), a more recent monograph (Haupt 2003) denied the existence of such glands in the Mesothelae. Our morphological studies of nine different species of Liphistius demonstrated the presence of venom gland...

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Veröffentlicht in:The Journal of arachnology 2010-12, Vol.38 (3), p.596-598
Hauptverfasser: Foelix, Rainer, Erb, Bruno
Format: Artikel
Sprache:eng
Schlagworte:
Alcohols
Animal glands
Araneae
Glands
Liphistius
Magnification
Male animals
Mesothelae
Microscopes
Morphology (Animals)
Muscle fibers
Physiological aspects
Polarized light
SHORT COMMUNICATION
Short Communications
Spiders
Venom gland
venom glands
Venoms
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Beschreibung
Zusammenfassung:Although venom glands were described for the Mesothelae many years ago (Bristowe & Millot 1933), a more recent monograph (Haupt 2003) denied the existence of such glands in the Mesothelae. Our morphological studies of nine different species of Liphistius demonstrated the presence of venom gland openings on the cheliceral fangs in all of these species. Also, we observed a small venom gland in the anterior portion of the cheliceral basal segment. The possibility that venom glands may be lacking in adult males is discussed. The presence of venom glands in the Mesothelae indicates that this is a plesiomorphic character of all Araneae.
ISSN:0161-8202
1937-2396
DOI:10.1636/B10-30.1