194 THE CANADIAN ENTOMOLOGIST. 



at maturity and attaches itself to the under side of rocks, where the $ 

 makes the ovisac and probably hibernates till spring, when the young 

 larvae crawl away in search of food. This is the first Exceretopus found 

 in America, and is from the highest altitude at which any Coccid has been 

 found, it being above timber line on Mt. Shasta, between 9,000 and 

 10,000 feet. 



A NEW SAWFLY OF THE GENUS XYELA. 



BY T. D. A. COCKERELL, EAST LAS VEGAS, N. M. 



Mr. Ashmead has written thus of the Xyelidae : " The imagoes 

 appear very early in the year, or in February, March and April, deposit 

 their eggs and then disappear, the consequence being that very few are 

 taken, and only a few of the common forms are known." Of the genus 

 Xyela, as now restricted, only one North American species, X. minor, 

 Norton, has been described. 



On May 1st of the present year, as we were going up to our classes 

 in the Normal University at Las Vegas, N. M., my wife picked a small 

 insect off my coat. It was at once transferred to the bottle which is 

 never absent from the entomologist's person, and, upon inspection later, 

 proved to be a new species of Xyela, herewith described : 



Xyela luteopicta, n. sp. — £ • Length of body about 2y 2 mm.; head 

 and thorax variegated with black and bright yellow; abdomen black or 

 nearly so above, yellow on venter ; legs pale orange ; antenna? with the 

 first three joints reddish-brown, the other (filiform) joints black : wings 

 very large, hyaline and iridescent, nervures black, stigma (very large) 

 sepia. Antennas 12-jointed, not hairy; head bright yellow, the occiput, a 

 small spot just above level of antennae, lines passing from the antenna? to 

 the ocelli, the ocellar region, and a broad short longitudinal band on 

 each side between the ocelli and the eyes, black. Thorax yellow 

 ventrally; black dorsally, with a large yellow pentagonal area, on which 

 are two black spots, a black V pointing anteriorly, and an anterior 

 weaker V pointing posteriorly. On one side the wing is abnormal, one 

 of the recurrent nervures being obliterated. 



