Thomas Vernon Wollaston published this drawing in his book ‘Insecta Maderensia’ in 1854. In the book he thanks Westwood for providing the illustrations, ‘Particularly, however, would I draw attention to the valuable help which I have received from J. O. Westwood, Esq., whose pencil has been so elaborately employed in the figures which I am thus enabled to attach, and by whom many of the minutest of the dissections were accomplished, — with a degree of delicacy, moreover, to which I did not myself at the commencement of this Work (though I have since succeeded in anatomizing the larger portion of them, likewise) lay claim.’ Wollaston wrote the following about this species:

‘A truly indigenous insect, occurring in most parts of the island at intermediate altitudes,—though especially within the sylvan districts, and between the limits of about 2000 to 4000 feet above the sea. It is nocturnal in its habits, and is constantly attracted by the light of fires and candles in elevated spots. I have taken it under such circumstances at the bottom of the Curral das Freiras, in February ; as also in the region of the Ribeiro Frio, during August,—where I have likewise frequently observed it drowned in the Levada, or have extracted it from out of the dead branches of the trees which clothe the mountain-slopes.’