European Earwig
( Forficula auricularia )


2002-0409-01100107-DER00707-Forficula_auricularia[2049h47s,F,A,stone]{ABall}-G.jpg

IDENTIFICATION
Identification:Forficula auricularia
(Linnaeus, 1758)
Common Name:European Earwig
Life Stage:A

PHYLOGENY

Phylum:Arthropoda
Class:Insecta
Superorder:Polyneoptera
Order:Dermaptera
Suborder:Eudermaptera
Family:Forficulidae
Subfamily:Forficulinae
Genus:Forficula
Taxon Code:DER00707
ITIS TSN#:186036

LOCATION DETAILS
Location
Merritt College Campus, Merritt College, 12500 Campus Dr., Oakland
County:Alameda County
ECI Site#:CA01100107

RECOGNITION
Male: Cerci (pincers) 4-8 mm. Female: Cerci 3 mm; tegmina 2 mm. Male cerci vary from about half as long to longer than the abdomen, broadened basally, with crenulate teeth basally and on beginning of curvature of inner margin. Antennae: 12 to 15 segments. Color: Adults are rich reddish-brown, with wing covers and legs dull yellow brown, and the wings completely developed. Large forceps of male distinguis this species from others in North American.
Wingspan
~10-12 mm. However, wings are folded beneath the tegmina (leathery forewings) and are rarely visible. These earwigs do fly.
Body Length
12-22 mm

BIOLOGY
Food
Omnivorous, and both beneficial and pestiferous. This insect will eat pests on plants as well as the plants themselves.
Development
Females lay clutches of eggs which she tends to keep clean and safe. Nymphs are miniature, undeveloped versions of the parents, with wings developing gradually on the outside of the body with each molt, the number of segments in the antennae also increasing with each molt, and the cerci develop from thin rods into the characteristic cerci of the adults. The female continues to look after early stage hatchlings.
Distribution
Cosmopolitan, native to western Palearctic; widely though spottily distributed across NA; introduced from Europe around 1910.

HABITAT

CREDITS
Photographer
Alan Ball

REFERENCES
  • BugGuide [ IMAGES ]
  • Integrated Taxonomic Information System TSN#186036


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