Tessellated Shieldback
( Tessellana tessellata )


2012-0610-01070003-ORT01360-Tessellana_tessellata[2024h58s,F,A,keyboard]{EXD}-G.jpg

PHOTO COMMENT
Adults fly as early as February into June, with female stragglers into mid-July

IDENTIFICATION
Identification:Tessellana tessellata
(Charpentier ,1825 )
Common Name:Tessellated Shieldback
Life Stage:(A) adult

PHYLOGENY

Phylum:Arthropoda
Class:Insecta
Superorder:Polyneoptera
Order:Orthoptera
Suborder:Ensifera
Family:Tettigoniidae
Subfamily:Tettigoniinae
Tribe:Platycleidini
Genus:Tessellana
Taxon Code:ORT01360
Identification By:Eric Eaton

LOCATION DETAILS
Location Name
Hayward, Hayward, 29629 Mountain Oak Ct., Hayward
County:Alameda County
ECI Site#:CA01070003

RECOGNITION
Recognition
UCIPM: "Katydids resemble grasshoppers but have long antennae. Nymphs are wingless and have black and white banded antennae. Females of the forktailed katydid lay gray, oval, flat eggs in leaves where they have been feeding. Nymphs appear in April and May and take 2 to 3 months to mature. Angularwinged katydids are larger than forktailed katydids, have broader wings and have a humpback appearance both as nymphs and as adults. Females lay their gray, oval eggs in two overlapping rows on twigs and leaves. Katydids have only one generation a year."
Description
UCIPM: Katydids resemble grasshoppers but have long antennae. Nymphs are wingless and have black and white banded antennae. Females of the forktailed katydid lay gray, oval, flat eggs in leaves where they have been feeding. Nymphs appear in April and May and take 2 to 3 months to mature. Angularwinged katydids are larger than forktailed katydids, have broader wings and have a humpback appearance both as nymphs and as adults. Females lay their gray, oval eggs in two overlapping rows on twigs and leaves. Katydids have only one generation a year.
Colors
Color1: green

BIOLOGY
Importance
UCIPM: Of the two species feeding on citrus, only the forktailed katydid causes economic damage. This species feeds on young fruit at petal fall with subsequent buildup of scar tissue and distortion of expanding fruit. Katydids take a single bite from a fruit and then move to another feeding site on the same or nearby fruit. In this way, a few katydids can damage a large quantity of fruit in a short time. They also eat holes in leaves and maturing fruit, creating injury that resembles damage by citrus cutworm. The angularwinged katydid is less abundant than the forktailed katydid and feeds only on leaves. (http://www.ipm.ucdavis.edu/PMG/r107300411.html)
Importance
UCIPM: Of the two species feeding on citrus, only the forktailed katydid causes economic damage. This species feeds on young fruit at petal fall with subsequent buildup of scar tissue and distortion of expanding fruit. Katydids take a single bite from a fruit and then move to another feeding site on the same or nearby fruit. In this way, a few katydids can damage a large quantity of fruit in a short time. They also eat holes in leaves and maturing fruit, creating injury that resembles damage by citrus cutworm. The angularwinged katydid is less abundant than the forktailed katydid and feeds only on leaves. (http://www.ipm.ucdavis.edu/PMG/r107300411.html)

CREDITS
Photographer
Eddie Dunbar
Insect Sciences Museum of California

References
Species Tessellana tessellata - Brown-spotted Bush-cricket. (http://bugguide.net/node/view/87105). Accessed March 12, 2016. .
Wikipedia
Eric Eaton


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