Taxonomic revision of the Spilomelinae (Lepidoptera, Pyralidae s. l.) of the Galápagos Islands, Ecuador Author Bernard Landry text Revue suisse de Zoologie 2016 123 2 315 399 journal article 10.5281/zenodo.155309 b195c5ca-7f2b-4f1b-a9a9-c1095c95d012 0035-418 155309 9ED8B8D5-ADA1-4B53-A1D3-0F75F889A179 Diaphania nitidalis (Stoll, 1781) Figs 17 , 102 , 148 Phalaena Pyralis nitidalis Stoll in Cramer & Stoll, 1781: 160 . Diaphania nitidalis (Cramer) : Causton et al. , 2006 : 141 . ‒ Roque-Albelo & Landry, 2015 . Material examined: 2 ♂ from the Galápagos Islands . – Santa Cruz : low agriculture zone, GPS: S 00°42.132’ , W 90° 19.156’ ; Horneman Farm, 220 m . Deposited in CAS , MHNG . Diagnosis: This species ( Fig. 17 ) is unlike any other in the Galápagos by virtue of its brown lustred purple forewing with a large pale yellow patch postmedially and the hindwing similarly coloured brown along the margin and pale yellow from base to beyond middle. The wingspan of the only spread Galápagos specimen is 29.5 mm . Biology: Host records are various Cucurbitaceae , for example in genera Citrullus , Cucurbita , Cucumis , Luffa , Momordica , Sechium and Sichana , but there is also one record in the Cactaceae ( Robinson et al. , 2014 ) . In the Galápagos the two specimens at hand were collected in the agriculture zone in February and March. Distribution: This species is found widely in the Western Hemisphere, from the USA across the Americas South to Argentina and including the West Indies (BMNH and MHNG specimens; Heppner, 2003 ; Robinson et al. , 2014 ). From the Galápagos I have seen only specimens from Santa Cruz , but Causton et al. (2006) also report it from San Cristóbal . Remark: I confirmed the identification of the Galápagos specimens with identified specimens in the BMNH.