Please use this identifier to cite or link to this item:
Title: Optics of the ultraviolet reflecting scales of a jumping spider
Authors: Land, M.F.
Horwood, J.
Lim, M.L.M. 
Li, D. 
Keywords: Cosmophasis umbratica
Mating behaviour
Structural colour
Ultraviolet reflection
Issue Date: 7-Jul-2007
Citation: Land, M.F., Horwood, J., Lim, M.L.M., Li, D. (2007-07-07). Optics of the ultraviolet reflecting scales of a jumping spider. Proceedings of the Royal Society B: Biological Sciences 274 (1618) : 1583-1589. ScholarBank@NUS Repository.
Abstract: The jumping spider Cosmophasis umbratica from Singapore is strongly sexually dimorphic. The males, but not the females, reflect ultraviolet as well as green-orange light. The scales responsible for this are composed of a chitin-air-chitin sandwich in which the chitin layers are three-quarters of a wavelength thick and the air gap a quarter wavelength (where λ = 600 nm, the peak wavelength of the principal reflection maximum). It is shown that this configuration produces a second reflectance peak at approximately 385 nm, accounting for the observed reflection in the ultraviolet. Other scales have a similar thickness of chitin but lack the air gap and thus produce a dull purple reflection. This novel mechanism provides the spiders with two colour signals, both of which are important in mating displays. © 2007 The Royal Society.
Source Title: Proceedings of the Royal Society B: Biological Sciences
ISSN: 09628452
DOI: 10.1098/rspb.2007.0328
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Jul 14, 2020


checked on Jul 14, 2020

Page view(s)

checked on Jul 12, 2020

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.