| | Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae |
Rumia.
Adults. Crepuscular and nocturnal. Antennae of males simple (filiform); non-ciliate. Face smooth.
Wingspan 33–44 mm. The outer margin of the forewing convexly curved. Forewings yellow, with ferrugineous costal spots; with a clear discal mark. The discal mark conspicuously pale-centred and dark-ringed (ringed reddish brown). Forewings of the male with a fovea. Hindwings plain; yellow; predominantly yellow; with a clear discal mark (this grey). The discal mark not dark-ringed. Hindwings transversely lined (with three faint, grey, partly interupted lines).
Hindwings lacking a tubular vein 5. Vein 8 of the hindwings approximated to or anastomosed with the upper margin of the cell to the middle or beyond. Hindwing veins 6 and 7 separate.
Posterior tibiae of males 4-spurred.
Early stages. Larvae feeding on Crataegus, Betula, etc.
British representation. 1 species; South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Northern Scotland, Wales, and Ireland (common). Living adults found May and June. O. luteolata (Brimstone Moth).
Subfamily. Ennominae.
Illustrations. • Cepphis, Epione, Isturgia, Opisthograptis, Pachycnemia, Petrophora, Plagodis, Pseudopanthera: Newman. 1, Isturgia limbaria (Frosted Yellow); 2, Cepphis advenaria (Little Thorn); 3, Petrophora chlorosata (Brown Silver-line); 4, Plagodis pulveraria (Barred Umber); 5, Plagodis dolabraria (Scorched Wing); 6a, Epione repandaria (Bordered Beauty); 6b-c, Epione vespertaria (male and female Dark Bordered Beauty, = E. repandaria); 7a, Pseudopanthera macularia (Speckled Yellow); 7b, P. macularia variety; 8a-b, Pachycnemia hippocastanaria (Horse Chestnut); 9, Opisthograptis luteolaria (Brimstone). From Newman, 1869. • Ennominae (‘Thorns’, etc.): Kirby 46. ENNOMINAE. 1, Ennomos quercinaria (August Thorn); 2, Ennomos autumnaria (Large Thorn); 3, Ennomos alniaria (Canary-shouldered Thorn); 4, Ennomos erosaria (September Thorn); 5, Selenia dentaria (Early Thorn); 6, Selenia lunularia (Lunar Thorn); 7, Selenia tetralunaria (Purple Thorn); 8, Apeira syringaria (Lilac Beauty); 9, Artiora evonymaria; 10, Odontopera bidentata (Scalloped Hazel); 11, Colotois pennaria (Feathered Thorn); 12, Crocallis elinguaria (Scalloped Oak); 13, Plagodis dolabraria (Scorch-wing); 14, Angerona prunaria (Orange Moth); 15, Ourapteryx sambucaria (Swallow-tailed Moth); 16, Opisthograptis luteolata (Brimstone Moth). From Kirby 36, with updated names. • Forewing and hindwing neuration: O. luteolata and other Geometridae.
We advise against extracting comparative information from the descriptions. This is much more easily achieved using the DELTA data files or the interactive key, which allows access to the character list, illustrations, full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa. See also Guidelines for using data taken from Web publications.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae. Version: 14th February 2021. delta-intkey.com’.
