24 MISCELLANEOUS STUDIES 



13. Myzocallis arundinariae Essig 



Figure 268 



Essig, Pom. Jour. Ent., vol. 4, p. 762, 1912. M. arundicolens (Clarke) (in 

 part). 



Davidson, Jour. Econ. Ent., vol. 7, p. 129, 1914. Eucallipterus arundi- 

 colens (Clarke) (desc. viviparae). 



Essig, Univ. Calif. Publ. Entom., vol. 1, pp. 302-305, 1917 (orig. desc.). 



Becords. Arundo sp., San Francisco Bay region (Davidson) ; Arundinaria 

 japonica, Santa Barbara (Essig); Riverside, January to May, 1917; Arundo 

 donax, San Diego, April to June, 1916. 



This is the commonest bamboo-infesting species in southern Cali- 

 fornia and parts of central California. For some time it was con- 

 sidered as M. arundicolens (Clarke) but this past year Essig pointed 

 out the differences, describing it as a new species. 



14. Myzocallis bellus (Walsh) 



Figures 45, 46 



Walsh, Proc. Ent. Soc. Phila., vol. 1, p. 299, 1862. Aphis (orig. desc.). 

 Essig, Pom. Jour. Ent. Zool., vol. 7, pp. 195-200, 1915. Callipterus (desc.). 



Eecords. Quercus agrifolia, Alhambra, Los Angeles County (Essig) ; Ventura 

 (Essig). 



Two collections have been made of this species in California, both 

 in southern California, in January, 1912, in Alhambra, and in May, 

 1913, in Ventura. Both of these consisted only of the alate females 

 (stem mothers), and were described by Essig. 



15. Myzocallis davidsoni Swain 



Figures 60, 61, 62, 267 



Clarke, Can. Ent., vol. 35, p. 249, 1903. Callipterus castaneae Fitch (list). 



Davidson, Jour. Econ. Ent., vol. 3, p. 376, 1910. Callipterus castaneae 

 (Buckton) (list). 



Davidson, Jour. Econ. Ent., vol. 5, p. 405, 1912. Calapliis castaneae (Buck- 

 ton) (desc. sexuales). 



Essig, Pom. Jour. Ent., vol. 4, p. 760, 1912. Calaphis castaneae (Fitch) 

 (list). 



Swain, Trans. Am. Ent. Soc., vol. 44, p. 1, 1918 (orig. desc.). 



Eecords. Castanea sp., Berkeley (Clarke, Essig, Swain), Stanford University 

 (Davidson, Swain), San Jose (Davidson); Quercus pedunculata, Berkeley (Swain, 

 Essig). 



This species was first reported in California by Clarke as Callip- 

 terus castaneae Fitch and later by Davidson as Cattipterus castaneae 



