Acrolophus propinqua

Walsingham’s Grass Tubeworm Moth
Acrolophus propinqua

POHL: 30-0063
MONA: 0374
GenBank: None

Grayish, covered with purplish iridescent speckles. Nose cones (palpi) very long, curved over head and reaching past end of thorax; sides of cones grayish, central area an obvious bright brownish-yellow. Eyes have lashes (hair) on inner margin.
Antenna: Short, reaching to end of thorax. Brownish-yellow, thick segments somewhat knife-like (serrated) or laminated on underside.
Thorax: Purplish-gray, no mane.
Wings: Varied in size and colour.
Male: Much smaller than female, wings narrower; grayish, covered with purplish iridescent speckles. A slightly darker, but faint spot at mid wing (discal cell); and usually with some darker shading and a few whitish scales near wing tip (apical 1/3).
Female: Much larger than male, wings wider. Mid wing dark spot barely visible. Sometimes with a purple-white stripe down inner wing margins, speckled with dark and with a dark patch along inner whitish border at mid-wing.
Hind wings gray-brown, fringe slightly paler.
Legs: Grayish-yellow, covered, more or less with dark scales.
Abdomen: Grayish-purple.

Size: Female 12 to 17 mm long. Wingspan 20 to 34 mm.
Male 9 to 12 mm. Wingspan 18 to 26 mm.

Habitat: Forest edges and meadows; cultivated fields.

Food: Grasses

Flight Time: Mid-June to end of July

Life Cycle: Typically Tubeworm larvae bury into the soil, creating silken tubes. They feed on grass thatch at the base of the plant or their roots. Pupate in their tube.

Comments: Not listed for Canada or Ontario. In Wheatley June 15 to July 30 in 2011 to 2013.

For information on synonyms, references and type specimens see next page