European Earwig

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Pest Profile Photo Credit: Jim Kalisch, University of Nebraska Common Name: European Earwig Scientific Name: Forficula auricularia Linnaeus Order and Family: Dermaptera: Forficulidae Size and Appearance: Length (mm) Appearance Egg 1.13mm x 0.85mm Oval to elliptical, swelling with moisture through development. Usually 30 – 60 eggs in a cluster, protected and maintained by the female. Larva/Nymph Light gray darkening to light brown throughout development. All four nymphal stages resemble adults. Early immature stage wings are not developed, but small abdominal cerci are present. Adult 13mm – 16mm Reddish-brown with yellow-brown legs. Pincher- like cerci, used for defense and mating, can range from 5 – 9.5mm. Adults are active at night and are seldom seen flying. Pupa (if applicable) Type of feeder (Chewing, sucking, etc.): The European earwig has chewing mouth parts. Host plants: The European earwig feeds on a wide variety of plant and animal matter including bean, beet, cabbage, celery, chard, cauliflower, corn, cucumber, lettuce, pea, potato, rhubarb, and tomato. Flowers include dahlia, carnation, pinks, sweet William, and zinnia. Fruit that are ripened include apple, apricot, peach, plum, pear, and strawberry. Special note: The European earwig is also known to be predator of aphids, spiders, caterpillar pupae, leaf beetle eggs, scale insects, spiders, and springtails. Description of damage (larvae and adults): Third and fourth stage nymphs and adults cause damage to new foliage and flower petals that can range from numerous small holes to being completely devoured. Damage to fruit and vegetables with tiny holes as well as fecal contamination can occur. References: Capinera, J. (2001). Handbook of vegetable pests. Gulf Professional Publishing. Capinera, J. L. (2008). Encyclopedia of entomology (Vol. 4). Springer Science & Business Media. Capinera, J. L. (2010). European Earwig Forficula auricularia Linnaeus (Insecta: Dermaptera: Forficulidae). Florida: University of Florida, IFAS Extension. (Pub# EENY483). Cranshaw, W. (2004). Garden insects of North America: The ultimate guide to backyard bugs. Princeton, NJ: Princeton University Press. Crumb, S. E., Eide, P. M., & Bonn, A. E. (1941). The European earwig. Tech. bull. No. 766, US Department of Agriculture. Jacobs S. (2013). European earwigs. Ento. Notes, Penn State Entomology. (25 January 2016). .

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