... Caragana or Blister Beetle. The black and red blister beetle is found in southern states in the US and in Central America. Blister beetles often attack faba beans in swarms, but generally in small patches within the field. Figure 6- Blister beetle on faba bean Source: Saskatchewan Agriculture. This is a blister beetle (Coleoptera: Meloidae) in the genus Lytta; Click here example. Since ingestion of these beetles can be fatal, some have warning colours to deter potential predators. As L. nuttalli commonly feeds on caragana (Caragana arborescens Lam.) on the Canadian prairies, attacks on rapeseed crops often occur near caragana hedges. In the Saskatchewan prairies Nuttall blister beetle Lytta nuttali Say is a sporadic pest of forages, canola, faba beans (Vicia faba) and a variety of other crops like lupin (Lupinus spp.) Three species of caragana or blister beetle will attack faba beans. Blister beetles give off a toxic chemical called cantharidin when stressed, which can raise blisters on human skin. Large beetle type. Canada Number 6882. (306) 668-5556. 6440. Nutttall’s Blister Beetle, Photo Credit: Shelley Barkley: DAMAGE: Adult blister beetles are 12-25 mm long; elytra are flexible and thorax is usually narrower than the round head and elytra. Rear is an iridescent green and head area is iridescent reddish purple. Number 6440. This is a blister beetle (Coleoptera: Meloidae) in the genus Lytta likely Lytta nuttalli; Click here for more detailed information. Some say that this large red and black beetle looks like a tiny armadillo. Saskatchewan Pulse Growers is a Pulse Crop Development Board that is accountable to and funded by growers. Figure 10 - Blister beetle with larvae and grasshopper eggs. Contact us! Blister Beetles (predator) Last year, the focus of the Insect of the Week was crop pests. Photo by Agriculture and Agri-Food Canada, Winnipeg. Nuttall blister beetle adults are metallic green or purplish (16-28 mm long). Physical contact should be avoided. Saskatchewan‘s Crop Production News for 2018 is now posted. Grasshoppers will selectively consume faba bean plants in areas where other crops are present. As with other blister beetles, this species has a small head in relation to its hard-shelled body. This seemingly plain beetle's body may have a blue sheen in certain light. Grasshoppers can be a major insect pest of faba bean. A Black Blister Beetle can secrete a liquid from its body that causes pain and blistering on skin. I have found a few of these around our orchard, but have seen 3 in our strawberries. ... Nutall’s blister beetle transiently showing up in some fields (blister beetle post), and the presence of the beneficial stiletto fly larvae which is a predator within the soil profile and targets wireworm larvae. Bankend, Saskatchewan. 6882. Blister Beetle. Smaller antenna, head appears to be roach like or ant like. Not sure if it can fly but has wings. The larvae of blister beetles climb onto bees and hitch a ride to the bees’ nests where they proceed to eat the eggs and stored food. The beetle has a humpbacked body that is in the shape of a tear. Others like the bee flies (Figure 9) and blister beetles deposit their eggs in the soil near grasshopper eggs. This year, we’re changing things up and highlighting the many natural enemies that help you out, silently and efficiently killing off crop pests. When the larvae of egg predators hatch, … Representative Genera and … The beetle is almost completely black save for a small spot of yellow on the abdomen that is usually hidden by its wing coverings. Saskatoon, Saskatchewan Canada. A typical attack was observed near Vanscoy, Saskatchewan in July 1981. 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