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Species Oecanthus niveus - Narrow-winged Tree Cricket

Late-season Tree Cricket - Oecanthus niveus - female Oecanthus niveus - male Tree Cricket - Oecanthus niveus - male cricket - Oecanthus niveus - female Tree Cricket - Oecanthus niveus - female Oecanthus - Oecanthus niveus - male - female Oecanthus niveus Narrow-winged Tree Cricket singing - Oecanthus niveus - male
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Orthoptera (Grasshoppers, Crickets, Katydids)
Suborder Ensifera (Long-horned Orthoptera)
Infraorder Gryllidea (Crickets)
Family Gryllidae (True Crickets)
Subfamily Oecanthinae (Tree Crickets)
Genus Oecanthus (Common Tree Crickets)
No Taxon (Niveus Group)
Species niveus (Narrow-winged Tree Cricket)
Synonyms and other taxonomic changes
Orig. Comb: Gryllus niveus De Geer 1773
Explanation of Names
nive - Latin for snowy (1)
Length 13–16 mm - SINA

O. niveus can be ID'd by the markings on the first two segments of the antennae. The first segment (the scape) has a thick black ' J ' atop a white field. The second segment (the pedicel) has a small black mark against a white field.
The vertex of the head is a reddish orange which sometimes extends down into the pronotum - otherwise a dark strip runs down the center of the pronotum. The antennae and limbs are pale. The body is green - and the wings usually give the female's body a 'marbled' appearance.
BugGuide records extend this range to Maine.
Narrow-winged Tree Crickets commonly dwell in trees. They can be found in a variety of settings including man-made structures and are attracted to lights. They are rarely found close to the ground, but can be found on very tall plants.
Tend to hatch in June and mate from August to November -- but depends on location.
Life Cycle
Undergo a paurometabolous development (Gradual Metamorphosis). Nymphs resemble small adults and gradually develop external wing buds. They live in the same habitat as adults, typically taking the same food.
Click on an image to view the life cycle:
A great source for 'everything you ever wanted to know about tree crickets' is "The Tree Crickets of New York: Life History and Bionomics" (2)
See Also

Internet References - Singing Insects of America (SINA)
http://oecanthinae Tree Crickets - information and photos
Works Cited
1.Dictionary of Word Roots and Combining Forms
Donald J. Borror. 1960. Mayfield Publishing Company.
2.The tree crickets of New York: life history and bionomics.
Bentley B. Fulton. 1915. 1915. New York Agricultural Experiment Station.