Using electron microscopy, the setiform sensilla on the prodorsal shield in a phoretomorphic female of Pediculaster mesembrinae (Canestrini) (Pygmephoroidea, Siteroptidae) are described and illustrated. The simple setae (first and second pair of vertical setae - v1, v2, second pair of scapular setae - sc2) and the trichobothrium (first pair of scapular setae - sc1) have a solid shaft and smooth surface; their dendrites have tubular bodies connected to their shaft bases. According to their ultrastructural details, they can be classified as aporous sensilla: the simple setae are tactile receptors while the trichobothrium is assumed to be involved in vibration perception. Morphological differences with caeculid and oribatid trichobothria are pointed out.
Fine morphology of the bothridial receptor organs of Pediculaster mesembrinae (Acari: Siteroptidae) adult female
DE LILLO, Enrico;
2002-01-01
Abstract
Using electron microscopy, the setiform sensilla on the prodorsal shield in a phoretomorphic female of Pediculaster mesembrinae (Canestrini) (Pygmephoroidea, Siteroptidae) are described and illustrated. The simple setae (first and second pair of vertical setae - v1, v2, second pair of scapular setae - sc2) and the trichobothrium (first pair of scapular setae - sc1) have a solid shaft and smooth surface; their dendrites have tubular bodies connected to their shaft bases. According to their ultrastructural details, they can be classified as aporous sensilla: the simple setae are tactile receptors while the trichobothrium is assumed to be involved in vibration perception. Morphological differences with caeculid and oribatid trichobothria are pointed out.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
