Synonyms and other taxonomic changes
formerly Orthonama centrostrigaria.
Placed in genus Costaconvexa
by Malcolm Scoble et al
in the 1999 catalog, Geometrid Moths of the World
the only species in this genus in North America
Adult: wings pale gray to reddish-brown; AM and PM lines form dark brown bands; PM line ends abruptly midway across wing (i.e. lower half absent); small black discal spot on all wings. Sexually dimorphic: male wings mostly gray; female has dark median area.
most of North America except Alberta and the arctic
wet open areas and waste places were foodplants grow; adults are nocturnal and come to light
Adults are on wing most of the year, on Block Island
, RI, where they have been recorded mid-April to mid-November.(1)
Larvae feed on Polygonum
species (knotweed, smartweed) and Galium
two or more generations per year
Eggs; larva; larva; pupa; adult
) has an oblique blackish dash at apex of forewing - lacking in Bent-line Carpet
Covell, p. 386, plate 50 #1, 4 (2)
Wagner, p. 214--photo of larva (4)
Moth Photographers Group
- species page with photographs of living and pinned adults.
live adult images
(Claire Curry, Texas)
(Larry Line, Maryland)