Many of these at first appearance are distinct but others are not differences in shape and key characteristics as host plant can aid ID. Even then it is still difficult. Distribution helps to narrow down candidates but ID on many is still very tentative.
Lochmaea suturalis Heather Beetle A common beetle of heathland from March onwards, regularly seen in flight on warm, sunny days. Feeds on heather and can travel miles flyimg
Oulema rufocyanea/melanopus Cereal Leaf Beetle -. The two species Oulema rufocyanea and Oulema melanopus are almost impossible to separate without detailed examination. Nationwide distribution suggests in Bury the commonist is Melanpus. Adults and larvae both feed on leaves of cereal crops and may become a pest. Common.
Oulema obscura A small (3 to 4 mm) beetle. It is greeny black in colour; the elytra have studded rows running down their length. Both the adult beetle and its larvae feed on grass and cereal leaves, chewing them to only the
Neocrepidodera transversa -These beetles are associated with Thistles and sometimes with Meadowsweet. N. transversa is distinguished from the similar N. ferruginea by having the elytral pores in ragged lines (compared with the neat, straight lines of ferruginea).
Phyllotreta sp flea beetle Difficul to ID further large legs allow it to jump
Phratora vitellinae Brassy Willow Beetle found on willow.
Phaedon aeruginosa Watercress Leaf Beetle () found on water cress. This is a small bronze-black beetle about an eighth of an inch in length. TIt feed upon the under side of the leaves of
skeleton remains. It can be an agricultural pest common.
Phaedon cochleariae mutard Beetle A common leaf beetle, the identification of which can be made more complicated by at least two other similar species. It favours waterside vegetation, especially occurring on Watercress where it was found.
Prasocuris phellandrii (?) found on marsh marigold Radcliffe. Looks correct and seems to be a foriegn invader with another record in Scotland
Agelastica Alni Alder leaf beetle, a relatively small beetle, around 6–7 mm, black or metallic blue in colour. Previously rare, it now appears as a pest. The beetle and the beetle's larvae host on alder ), but will be found on hazel, birch and/or hornbeam if there is a shortage of food. Causing large holes and gaps from the end of April onwards, which are produced by the larvae in the first two stages, but the main damage is only produced by larvae in the third stage.
Byturus tomentosus Raspberry Beetle - Though the beetle larvae are pests for Raspberry growers, adults can be found feeding on pollen on a variety of wildflowers. The small adults often congregate within flowers, particularly composites such as Dandelion. Similar to B. ochraceous, B. tormentosus is slightly smaller (up to 4mm) and has elytra that taper outwards slightly towards the base. It is also lighter brown and elytra that are generally parallel-sided
Altica sp Difficul to ID further large legs allow it to jump. Several species feed on such things as willow found emerging from moss 11.03.14 elton 6 species at least in UK
Chrysolina fastuosa Dead-Nettle Leaf Beetle seen as common but not seen often so widespread but very local
Crepidodera aurata Willow Flea Beetle - There is a single generation and adults occur throughout the year, hibernating under bark or among debris etc around logs. They become active early in the spring. Frequent and widely distributed below
Crepidodera fulvicornis leaf beatle? Length: 3mm. This small, green beetle is found on willows particularly. As with other 'flea' beetles it has swollen hind legs which allow it to jump common found on willow.
Thistle Tortoise Beetle Cassida rubiginosa The elytra are matt green and it often sits with the edges flush to the leaf, leaving no shadow. The specific name rubiginosa refers to the beetle's ability to produce a red liquid from the head.
Donacia vulgaris. Length about 8 mm. This Reed Beetle has coppery elytra, with a reddish or bluish central area. The elytra are studded with rows of pores. Around water plants especially Bur-reed. No furrow on thorax. Found on reed.
Donacia semicuprea has furrow on thorax. similar to above,
Donacia versicolorea large rear legs scuttles accross broad leaved pomd weed.
Gastrophysa viridula - Green Dock Beetle Usually found on Dock plants, it can be seen anywhere that Dock is present, such as roadside verges and field margins. It is often seen near to water. Length 4 to 6 mm. A small green-golden beetle the elytra often seem to have a sheen.
Gastrophysia poligona This is a small and colourful leaf beetle, no more than 5mm in length, with metallic green wing cases and head, whilst the thorax is bright red. G. polygoni feeds on the leaves of various Polygona.
Galerucella nymphaeae Water-lily Beetle - can be a pest of lillies.
Galerucella sagittariae It is often found near to water habitats where it breeds. It is known to feed on the leaves of Strawberries both in the adult and larval stage and can become a pest of this crop. It also feeds on the leaves of various other plant species including Cloudberry. Found on dock
Lamprosoma concolor 18/04/2011B Very difficult to ID Representative only