Pomona College Jouhnal of Entomolooy 537 



Hosts — Occur ill \'crv IfirgH' mikI wi{l(ly-s|in',-i(i cdloiiics on tlic lr/i\cs mikI 

 tender slioots of willow {iSnli.r Im-rigata Hebb.) Other writers Iiavc reported it 

 upon the following hosts: 



ScirOUTEDEN LiNNE 



Sali.r aurita. Pastinaca sativa. 



Pimpinella magna. Fabricius 



Pimpinella saxifraga. Salix caprea. 



Kr,/simum vulgare. Kaltenbach 



Dnurus carota. g^j-^ babylonica. 



BucKTON Salix amygdalina. 



Apium graveolens. Salix alba. 



MoNELL Koch 



Salix lurida. Cicnfa virosa. 



Sahx nigra. Heracleum sphondylium. 



Oestlund Angelica sylvestris. 



Archangclira airopnrpurea. Aegopndium podagraria. 



Oavis ChaerophyUum iemulum. 



Zisia aurea. 

 Davidson 



Salix sp. 



Locality — Along the Santa Clara River, Santa Paula, Cal. Date of collec- 

 tion — April 11, 1911. Serial number 28. 



This species has been the source of no little confusion as may be told from 

 the long list of synonyms above. I am especially indebted to Mr. J. T. Monell 

 and Mr. John J. Davis for their aid in determining it. Mr. Davis writes: "Have 

 just looked at tlic slides which you sent and consider them as Siphocoryne capreae, 

 in other words what I called Siphocoryne (Hyadaphis) pastinacae Linn. I consider 

 Hyadaphis the correct name of this genus. Even the European students seem to 

 be unable to say whether capreae and pastinacae are synonymous or distinct and so 

 I simply follow Schouteden and used the name pastinacae. S. salicis Monl. and 

 aS'. archangelicae Oest. are synonyms of capreae. I intended to saj' above that the 

 tubercle on the penultimate abdominal segment seems to be a good specific char- 

 acter of this species. I know of no other Hyadaphis bearing this tubercle." May 



27, ipn. 



OTHER DESCRIPTIVE LITERATURE 



1843 Aphis capreae F. -Kaltenbach Mon. Pflz., p. 109. 



1879 Siphocoryne pastinacae L.-Buckton, Mon. Br. Aph. II, 24. 



1879 Siphocoryne capreae Fab.-Buckton, Mon. Br. Aph. II, 27. 



1880 Siphocoryne pastinacae L.-Thos. 8th Dept Ent. Ill, p. 8i. 

 1880 Rhopalosiphum salicis Mon.-Thos. 8th Rept Ent. Ill, p. 194- 

 1887 Siphocoryne archangelicae Oestl. Aphid. Minn, p. 70. 



1887 Siphocoryne salicis (Mon.)-Oestl. Aphid. Minn, p. 70. 



1891 Aphis pastinacae Koch-Riley-How., Ins. Life, IV, 213. 



1893 Siphocoryne salicis Mon. -Weed, Trans. Am. Ent. Soc. 20, p. 297. 



1910 Siphocoryne pastinacae (L.) -Williams, Aphid Nebr., p. 62. 



1910 Siphocoryne pastinacae L.-Davis, Jr. Ec. Ent., Ill, 493. 



