Dark Tubeworm Moth
For photos see:
Identification: Fall flying.
Head: Brown. Eyes have no lashes on inner margin. Nose cone (palpi) slightly hairy, curved, lighter brown to yellowish; barely reach base of thorax. Female nose cone very short, not noticeable.
Antenna: Pale yellowish-brown, reaching to mid-wing. Male antenna scaled on all sides (laminate), like Acrolophus texanella. Female antenna very thin.
Thorax: Brownish-gray. Hairs spiked; hairs on thorax sides brushed up to center.
Wings: Fore wings very long and more pointed than all other Acrolophus. Inner margin has wide yellowish-brown area, with a dark triangle at mid-wing close to inner margin. Rest of wing can be same color, darker, or almost black. Sometimes a small line at 2/3 wing length (discal cell). Dark spots around wing tip, similar to female Acrolophus arcanella). Fringe dark brown. Hind wings brownish-black.
Female similar to male, or cream colored along inner margin and light brown speckled for rest of the wing.
Legs: Can be light or dark brown, almost black. More feathery hair then other Acrolophus. Male legs usually darker.
Abdomen: Light or dark brown.
Size: Wingspan 30 mm. Some quite small 18 mm to 24 mm wingspan.
Habitat: Deciduous & conifer forests with Birch.
Food: Birch – one report from 1905.
Flight Time: Mid-September to October
Life Cycle: Apparently a day-flyer (late afternoon). Eggs laid on Birch bark from 1 report in 1905. The egg is long, narrow, and strongly ridged.
Comments: Norfolk County Sept. 22, 2016 by Beadle. Lambton County in 2007 was 1st record. Also Dundas County. Rare, more northern species.
Synonyms: Grote 1882
Eutheca mora, Sapinella mora, Pseudanaphora mora, Acrolophus mora.
Bulletin of the United States Geological and Geographical Survey of the Territories 1882 by Grote, pp. 257 to 258 as Eutheca mora.
A Synonymic Catalogue of Lepidoptera Heterocera, 1892, Vol. 1 by Kirby, pg. 534 Sapinella genus.
Transactions of the American Entomological Society, 1893, Vol. 20 by Smith, pg. 10 Sapinella.
The Canadian Entomologist, 1895, Vol. 27 by Dyar, pg. 15 as Pseudanaphora mora.
Cornell University Agriculture Experimental Station, 1923, Memoir 68 by Forbes, pg. 121 as Acrolophus morus.
Proceedings of the United States National Museum, 1964, Vol. 114 by Hasbrouck, pp. 632 to 636 as Acrolophus morus.
Journal of the New York Entomological Society, 1967, Vol. 75 by Klots, pg. 18 – day flying.
Northeastern Naturalist, 1997, Vol. 4 #1: The Moth Acrolophus morus in Maine by Russo & Roberts, pp. 45 to 46.
Ohio State University Research Bulletin, 2001 #1192: Lepidoptera of Wayne County, Ohio by Rings and Downer, pg. 21. Larval food and fly dates.
Holotype as Eutheca mora female by Grote, 1882. Type Locality: New York. In the British Museum of Natural History, London, England.