Leaf Beetle
( Chrysomelidae )


2010-0213-EB450001-COL00504-Chrysomelidae[1357h38s,F,A,post]{EXD}-G.jpg

PHOTO COMMENT

IDENTIFICATION
Identification:Chrysomelidae
(Latreille ,1802 )
Common Name:Leaf Beetle
Life Stage:(A) adult

PHYLOGENY

Phylum:Arthropoda
Class:Insecta
Superorder:Holometabola
Order:Coleoptera
Suborder:Polyphaga
Family:Chrysomelidae
Taxon Code:COL00504
ITIS/TSN:114509

LOCATION DETAILS
Location Name
Redwood Regional Park, Redwood Regional Park, Redwood Regional Park, EBRPD, 7867 Redwood Rd, Oakland
County:Alameda County
ECI Site#:CAEB450001
Open Space Location:Redwood Regional Park, EBRPD

RECOGNITION
Description
Leaf Beetles can generally be recognized by the similarity to Lady Beetles (Coccinellidae). They are fairly ovular in shape with a domed form. Legs: Tarsal formula appears to be 4-4-4, but is actually 5-5-5, as the 4th tarsal segment is very small and hidden by the 3rd. Antennae: In most, antennae are notably shorter than the head, thorax and abdomen, and not more than half their combined length. Segment 1 of the antenna, in most cases, is larger than the following segments. Segment 2 of the antenna is of normal size (which differentiates leaf beatles from the closely related Longhorn Beetles). In most species, the antennal segments are fairly similar in shape, gradually widening towards the tip. Color: Some are conspicuously colored, typically in glossy yellow to red or metallic blue-green hues, and some have spectacularly bizarre shapes. They often possess a metallic luster or multiple colors. Head: In some subfamilies the head is covered by the pronotum. Thorax: The pronotum varies, but in most it is slightly to highly domed and trapezoidal to rounded-squarish in dorsal view.
Body Length
Most are 1-18 mm in length, with exotics up to 35 mm.
Diversity
This is one of the 5 largest beetle families (and 2nd largest after Curculiondiae) among the plant-feeding beetle. 10 of the 12 subfamilies are represented in North America. America North of Mexico: About 1,900 valid species and subspecies in 220 genera. Worldwide: About 35,000 species are described in more than 2,100 genera and up to 60,000 estimated species.

BIOLOGY
Food
Chrysomelids are plant feeders and are among the most diverse and conspicuous insect families on plants. Most are fairly host specific, feeding on just one species of plant or on just a few, or just certain plant features. Adults feed on leaves, pollen or parts of flowers. Many larvae feed on leaves, but a great number are subterranean, attacking roots and underground stems. Many species do enough serious damage to be of economic importance.
Distribution
Throughout the world except the antarctic and most of the high arctic.
Diversity
This is one of the 5 largest beetle families (and 2nd largest after Curculiondiae) among the plant-feeding beetle. 10 of the 12 subfamilies are represented in North America. America North of Mexico: About 1,900 valid species and subspecies in 220 genera. Worldwide: About 35,000 species are described in more than 2,100 genera and up to 60,000 estimated species.
Development
Most species in North America are univoltine and overwinter as adults. Larvae have a wide variety of life histories.

CREDITS
Photographer
Eddie Dunbar
Insect Sciences Museum of California

References
Family Chrysomelidae - Leaf Beetles. (bugguide.net/node/view/180). Accessed July 18, 2016. .
ITIS.
Leaf beetle. (https://en.wikipedia.org/wiki/Leaf_beetle). Accessed July 18, 2016.


.