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TaxonomyBrowse
Info
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Species Pachybrachis umbraculatus

Pachybrachis umbraculatus Suffrian - Pachybrachis umbraculatus Pachybrachis umbraculatus Suffrian - Pachybrachis umbraculatus Pachybrachis umbraculatus Suffrian - Pachybrachis umbraculatus Pachybrachis umbraculatus Suffrian - Pachybrachis umbraculatus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Long-horned and Leaf Beetles)
Family Chrysomelidae (Leaf Beetles)
Subfamily Cryptocephalinae (Case-bearing Leaf Beetles)
Tribe Cryptocephalini
Subtribe Pachybrachina
Genus Pachybrachis (Scriptured Leaf Beetles)
No Taxon (Striped Pachys)
Species umbraculatus (Pachybrachis umbraculatus)
Explanation of Names
Pachybrachis umbraculatus Suffrian 1852
Size
Length 3.5 to 3.9 mm (1)
Identification
Fall's description:
Pale dull yellow, minutely alutaceous but somewhat shining; prothorax with a blackish Y shaped median vitta and a lateral vitta each side inclosing (as usual) somewhat imperfectly an external pale spot; elytra each with a rather narrow blackish median vitta often imperfect or even nearly obsolete, also with the extremities of a second vitta represented by a blackish spot on the shoulder knob and another on the sixth interval exterior to the apex of the median vitta. Front without ocular lines; front claws of male not enlarged. (1)

Fall's last key couplet for this sp.
Elytra yellow with a single narrow, often imperfect or subobsolete median vitta; the shoulder knob and a posterior spot (representing an outer vitta) black. (1)
Range
AZ to w. TX / Mex. (1)(2)
Season
June-July (1)
Life Cycle
one adult collected sweeping Baccharis pteronioides (Asteraceae) in AZ (3)
Print References
Fall, H.C. 1915. A revision of the North American species of Pachybrachys. Transactions of the American Entomological Society 41: 291-486. (1)
Suffrian, E. 1880. Pg. 69, Plate 4, Fig. 14. In: M. Jacoby. (1880-1892). Biologia Centrali-Americana, Coleoptera. Phytophaga (part). Volume VI, Part 1 (Suppl.).
Works Cited
1.A revision of the North American species of Pachybrachys
H. C. Fall. 1915. Transactions of the American Entomological Society, Vol. 41, No. 3: 291–486 .
2.Catalog of Leaf Beetles of America North of Mexico
Ed Riley, Shawn Clark, and Terry Seeno. 2003. Coleopterists Society.
3.Host plants of leaf beetle species occurring in the United States and Canada
Clark et al. 2004. Coleopterists Society, Special Publication no. 2, 476 pp.