Universität zu Köln

Li, Meng ORCID: 0000-0003-4931-5647, Seinsche, Clara ORCID: 0000-0002-0798-3367, Jansson, Samuel, Hernandez, Julio, Rota, Jadranka ORCID: 0000-0003-0220-3920, Warrant, Eric ORCID: 0000-0001-7480-7016 and Brydegaard, Mikkel ORCID: 0000-0003-0586-664X (2022). Potential for identification of wild night-flying moths by remote infrared microscopy. J. R. Soc. Interface, 19 (191). LONDON: ROYAL SOC. ISSN 1742-5662

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Abstract

There are hundreds of thousands of moth species with crucial ecological roles that are often obscured by their nocturnal lifestyles. The pigmentation and appearance of moths are dominated by cryptic diffuse shades of brown. In this study, 82 specimens representing 26 moth species were analysed using infrared polarimetric hyperspectral imaging in the range of 0.95-2.5 mu m. Contrary to previous studies, we demonstrate that since infrared light does not resolve the surface roughness, wings appear glossy and specular at longer wavelengths. Such properties provide unique reflectance spectra between species. The reflectance of the majority of our species could be explained by comprehensive models, and a complete parametrization of the spectral, polarimetric and angular optical properties was reduced to just 11 parameters with physical units. These parameters are complementary and, compared with the within-species variation, were significantly distinct between species. Counterintuitively to the aperture-limited resolution criterion, we could deduce microscopic features along the surface from their infrared properties. These features were confirmed by electron microscopy. Finally, we show how our findings could greatly enhance opportunities for remote identification of free-flying moth species, and we hypothesize that such flat specular wing targets could be expected to be sensed over considerable distances.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Li, Meng UNSPECIFIED orcid.org/0000-0003-4931-5647 UNSPECIFIED Seinsche, Clara UNSPECIFIED orcid.org/0000-0002-0798-3367 UNSPECIFIED Jansson, Samuel UNSPECIFIED UNSPECIFIED UNSPECIFIED Hernandez, Julio UNSPECIFIED UNSPECIFIED UNSPECIFIED Rota, Jadranka UNSPECIFIED orcid.org/0000-0003-0220-3920 UNSPECIFIED Warrant, Eric UNSPECIFIED orcid.org/0000-0001-7480-7016 UNSPECIFIED Brydegaard, Mikkel UNSPECIFIED orcid.org/0000-0003-0586-664X UNSPECIFIED
URN:	urn:nbn:de:hbz:38-672144
DOI:	10.1098/rsif.2022.0256
Journal or Publication Title:	J. R. Soc. Interface
Volume:	19
Number:	191
Date:	2022
Publisher:	ROYAL SOC
Place of Publication:	LONDON
ISSN:	1742-5662
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ROUGH-SURFACE INTERFEROMETRY; STRUCTURAL COLORS; RADAR; EVOLUTION; PATTERNS; INSECTS; THERMOREGULATION; RADIATION; FLIGHT; SIZE Multiple languages Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/67214