Rumex
Guides
Ametastegia glabrata
Dock Sawfly, Dock False-worm
Ametastegia glabrata, commonly known as the dock sawfly or dock false-worm, is a tenthredinid sawfly native to the Palearctic region. The species has been introduced to Australia, where it was first recorded in Victoria attacking raspberries. It is associated with Rumex species (dock and sorrel) as host plants.
Gastrophysa cyanea
green dock beetle, blue dock beetle
Gastrophysa cyanea is a small leaf beetle in the family Chrysomelidae, measuring 4-5 mm with metallic green coloration that may shift to metallic blue in pinned specimens. The species is found across North America and is strongly associated with dock plants (Rumex species), particularly curly dock. Females develop conspicuously swollen abdomens prior to egg laying, providing a reliable diagnostic feature. The species emerges in spring and has been the subject of behavioral studies examining host plant recognition.
Hypera rumicis
Dock Hyper Weevil
Hypera rumicis is a small true weevil in the family Curculionidae, known as the Dock Hyper Weevil. The species is native to Europe and has been introduced to North America. It is a specialist herbivore associated with dock and sorrel plants (Rumex spp.), where both larvae and adults feed on host tissues. The species has been investigated as a potential biological control agent for invasive Rumex weeds, though it can also cause damage to crops. Adults show complex behavioral responses to plant volatile compounds, with attraction and repellency depending on concentration and mating status.
Lycaena dione
grey copper, great copper
Lycaena dione, commonly known as the grey copper or great copper, is a butterfly species in the family Lycaenidae. First described by Samuel Hubbard Scudder in 1868, this species is distributed across central North America from southern Canada to Texas. Adults are active from mid-June through July or August, with a wingspan ranging from 24 to 38 mm. The species is sometimes treated as a subspecies of Lycaena xanthoides, reflecting ongoing taxonomic debate.
Ostrinia marginalis
Ostrinia marginalis is a small crambid moth described by Francis Walker in 1866. It is found across northern North America from Newfoundland and Maine westward through the Canadian provinces to the Yukon and Northwest Territories. The species is associated with wetland habitats, specifically bogs and marshes. Its larvae feed on Rumex (dock) and Polygonum (knotweed) species.
Rhinoncus bruchoides
Rhinoncus bruchoides is a weevil species in the family Curculionidae, first described by Herbst in 1784. The species has been documented in Belgium and Nova Scotia, Canada. As a member of the genus Rhinoncus, it belongs to a group of weevils associated with Polygonaceae plants. The species name 'bruchoides' refers to its resemblance to seed beetles in the family Bruchidae.