278 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



Manitoba: 2cf, 29, Aweme, July 11, 1922 and July 3, 1923 (R. M. White, 

 CNM); 3 9 , Aweme, June 26, 1911 and July 20, 1911 (N. Criddle, PANS). 



Mexico: 1 9 , Baja California, Johnson Ranch, May 7, 1938 (W. E. Simmonds, 

 EIS); 1 9 , Chiapas, 6 miles southwest of Arriaga, sea level, Aug. 12, 1952 (C. D. 

 MacNeill, CIS). 



Montana: 1 9 , Kalispell, June 13, 1920 (BMNH). 



Nebraska: 1 cf, 19, Cherry Co., Aug. 22, 1945, on fire tower (D. Gates, 

 UN) ; 1 cf , 30 miles south of Valentine, June 9, 1950 (Slater, Hicks, Laffoon, EIS). 



Nevada: 19, Charleston Mts., Willow Creek Camp, July 1, 1954 (E. I. 

 ScWinger, CIS). 



New Mexico: Icf, Ruidosa, June 26, 1940 (L. C. Kuitert, EIS); 1 9, Beien, 

 Aug. 19, 1927 (L. D. Anderson, UK); Id", Corona, June 8, 1950 (L. D. 

 Beamer, UK). 



New York: Id', Orient, Long Island, July 4, 1907 (R. Latham, AMNH). 



Quebec: Id', 19, Rupert House, July 10, 1949 (D. P. Gray, CNM). 



Utah: Id", Soldier Summit, June 18, 1940 (Knowlton and Harmston, USAC). 



Seasonal occurrence: From Apr. 12 (Texas) to Sept. 6 (Kansas); 

 from Apr. 19 to Sept. 10 (California) and from Aug. 12 to Oct. 28 

 (southern Mexico). 



Recorded hosts: Pardosa distincta (Blackwall) from Ontario by 

 Sabrosky (1948, p. 427); Pardosa banksi Cliamberlin from Connecti- 

 cut by Kaston (1937, p. 419, given as host of ixdlidipennis Loew). 



New host record: Pardosa sternalis Thorell (?), immature, col- 

 lected at Quincy, Plumas County, Calif., Alay 6, 1950, by the author. 

 The parasite (9) emei-ged from host May 11, pupated May 13, emerged 

 as an adult May 18, and died May 22, 1950. 



Biology: Although it is a fact that the only known genus of hosts 

 for eugonatus is Pardosa Koch, in all probability other lycosids will 

 be found to serve as hosts as well. 



Kaston (1937, p. 419) reared two specimens of eugonatus, gave one 

 day as their emergence to prepupal period, and said their pupal 

 period lasted 5-6 days. The only specimen reared by the author had 

 similar periods of development, and the adult female lived only 4 

 days in captivity. 



Sabrosky (1944, pp. 394-395) recorded finding a large series of 

 adults in a neglected orchard near Beulah, Mich., in 1942-43. He 

 said they were usually "found clinging to the underside of dead twigs 

 on dead or dying young cherry trees ... in no case were they taken 

 on twigs bearing leaves." I have had only one occasion to observe 

 this species in any numbers. This was in 1951 in tall grass bordering 

 rather dry pastm-e land in Morongo Valley, Calif, (this pasture has 

 since been burned over). Specimens were taken in open flight by net 

 and also by sweeping the tall grass. Several specimens, all males, 

 were collected some distance away on the trunks of large willow trees. 

 All the specimens observed on this day (Apr. 19, 1951) were males. 

 On June 18, 1951, R. C. Bechtel collected in this same pasture and 

 obtained only females. This would indicate that the actual time that 



