Synonyms and other taxonomic changes
this genus has been placed in at least five subfamilies by various authors at various times, such as:
Rivulinae [Hodges, 1983]
Ophiderinae [Poole, 1989]
Calpinae [Kitching and Rawlins, 1999]
Hypeninae [CBIF, 2003]
Boletobiinae [All-Leps, 2006] - this is the classification followed at BugGuide
Numbers
5 species in North America listed at
All-LepsSize
wingspan 22-28 mm, based on photo by Jim Vargo, and data on M. inexplicata at U. of Alberta
Identification
Adults: broad-winged dark grayish-brown moths resembling a geometrid (and originally placed in family Geometridae); forewing somewhat blotchy and crossed by three indistinct lines, slightly wavy and either toothed or scalloped; hindwing similar, sometimes paler; male antennae broadly pectinate, sexes otherwise similar
Range
mainly western, but one species (M. inexplicata) occurs across most of northern United States and southern Canada
Season
adults fly from June to September
Food
larval food apparently unknown, but suspected to be fungi on dead wood
Internet References
pinned adult images of 2 species occurring in western Canada (CBIF)
pinned adult image of
M. rubricans (California Dept. of Food and Agriculture)
pinned adult image of an unnamed species by Jim Vargo (Moth Photographers Group)
overview of M. inexplicata (Strickland Entomological Museum, U. of Alberta)
adult collection dates and localities of 4 species in California (U. of California at Berkeley)
presence in Oregon list of 2 species (Oregon State U.)
distribution in Canada of 2 species (U. of Alberta, using CBIF data)
classification in subfamily Rivulinae by Hodges, 1983 (Markku Savela, FUNET)
classification in subfamily Ophiderinae by Poole, 1989, and in subfamily Calpinae by Kitching and Rawlins, 1999 (Brian Pitkin
et al, Butterflies and Moths of the World)
classification in subfamily Hypeninae by CBIF, 2003 (Canadian Biodiversity Information Facility)