Digitiform Sensilla on the Maxillar Palp of Coleoptera
作者:
Klaus Honomichl,
Gert‐Wolfhart Guse,
期刊:
Acta Zoologica
(WILEY Available online 1981)
卷期:
Volume 62,
issue 1
页码: 17-25
ISSN:0001-7272
年代: 1981
DOI:10.1111/j.1463-6395.1981.tb00613.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
AbstractThe fine structure of the digitiform sensilla on the distal segment of the maxillar palps of Tenebrio and Dermestes is described. Each sensillum is associated with a single sensory cell and three enveloping cells, which enclose two receptor lymph cavities. The inner receptor lymph cavity of both species shows a different structural feature. Branches of the outer dendritic segments, which contain numerous microtubules, run to the tip of the hairshaft. A dendritic sheath extends to the apex of the peg. The hairshaft possesses a second canal, which is free of dendrites. The poreless hairshaft is inserted in a cuticular canal; the longer distal part of the shaft is positioned in a narrow superficial groove.The digitiform sensilla do not show the typical structures of mechanosensitive sensilla. The absence of pores in the setal wall does not point to a function as olfactory or gustatory hairs. The presumed function of the sensilla is discussed in relation to thermo‐, hygro‐ and CO2‐rece
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