A REVISION OF NORTH AMERICAN CHRYSOBOTHRINI 223 



which he published his redescription in 1859, but this specimen is not 



the true type. 



M ale.— Differing from the female in having the head green, becoming cupreous 

 or purplish on the occiput, the antenna bronzy green, with a golden tinge, the last 

 visible sternite broadly, deeply, arcuately emarginate at apex, and more indis- 

 tinctly carinate at middle, the eighth tergite coarsely, sparsely punctate, and the 

 anterior and middle tibiae more strongly arcuate. 



Type locality. — "North America," probably from a specimen sent to 

 Dejean by the elder LeConte from Georgia; present location of type 

 unknown to the writer. 



Distribution. — Material has been examined from the District of 

 Columbia, and from various localities in the following States: Con- 

 necticut, Georgia, Illinois, Iowa, Maryland, Massachusetts, Michigan, 

 Missouri, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, 

 Virginia, and West Virginia. 



The species is also recorded in the literature from Texas by Horn 

 (1886), from Indiana by Blatchley (1910), from Manitoba, Canada, by 

 Criddle (1926), and from Maine by Chamberlin (1926). 



Hosts. — Specimens have been examined that were reared from 

 hickory (Hicoria sp.), maple (Acer sp.), smooth sumac {Rhus glabra 

 Linnaeus), and dead grape. It is recorded in the literature as having 

 been reared from scarlet oak (Quercus coccinea Muenchhausen), 

 swamp white oak (Quercus bicolor Willdenow), white or gray birch 

 (Betula populifolia Marsh), smooth alder (Alnus rugosa (DuRoi) 

 Spreng), wistaria (Wistaria chinensis DC), and pine (Pinus sp.), 

 and the adults have been collected on dogwood (Oornus florida Lin- 

 naeus), poison ivy (Rhus toxicodendron Linnaeus), basswood, or lin- 

 den (Tilia glabra Ventenat), gray dogwood (Oornus paniculata 

 L'Her.), thorn (Crataegus sp.), willow (Salix sp.), peach, and plum. 



The color on the dorsal surface of the body varies from violaceous 

 blue to purple, with all intermediate shades, and the underside of the 

 body is frequently bright green at the middle, becoming reddish 

 cupreous at the sides, similar to sexsignata. The color on the front of 

 the head in the females varies from uniformly violaceous blue to 

 purple, with the margins more or less greenish, and frequently there 

 is a vague longitudinal carina on the occiput and vertex. The sides 

 of the pronotum are usually sinuate and more or less parallel at the 

 middle, but occasionally specimens are found with pronotum widest 

 near the apical angles. Three specimens from Iowa have the dorsal 

 surface of the body brownish purple, with a faint greenish tinge, and 

 the foveae on the elytra coppery yellow. Specimens from Georgia 

 are violaceous blue with the foveae on the elytra of the same color as 

 the rest of the surface, whereas the specimens from the northern part 

 of the country are purple with distinct greenish or bluish foveae. 

 The length is from 5.5 to 9 mm. 



Dejean (1833) simply listed Chrysobothris azurea from North 

 America without giving any description. Castelnau and Gory (1836) 

 misidentified a species from the same region as ultramarina Say and 

 gave a short description. Mannerheim (1837) placed azurea Dejean 

 as a synonym under ultramarina Castelnau and Gory (not Say). 

 LeConte (1857), recognizing the erroneous identification of ultra- 

 marina by Castelnau and Gory, proposed azurea, the name given the 

 species in the Dejean Catalogue, for ultramarina Castelnau and 



