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3o8 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



M. gravicornis Patch. 



Me. Agr. Expt. Sta,, Bull. 283, 213, 1919. 

 M. hieracii (Kaltenbach). Aphis hieracii Kaltenbach. 



Mon. der Pflanz., 17, 1843. 



A common species on Hieracium. For description and figures 

 see Theobald (1913a). 



M. illinoiensis (Shimer). Aphis illinoiensis Shimer. Siphono- 

 phora viticola Thomas. (Fig. 30, 3.) 



Prairie Farmer, xviii, 20, 316. 



For discussion see Davis (1910b) and for Hfe history of this 

 ■Viburnum- grape aphid see Baker and Turner (1915). This 

 species has hardly frontal tubercles enough to warrant its inclusion 

 under Macrosiphum as usually restricted. 



On grape, New Haven, July, 1905 (B. H. W.) ; New Haven, 24 July, 

 1912 (J. K. L.) ; New Haven, 29 July, 1914 (M. P. Z.). 



M. impatiensicolens Patch. (Fig. 29, 5.) 



Me. Agr. Expt. Sta., Bull. 282, 210, 1919. 

 M. kaltenbachii Schouteden. Siphonophora alliariae Koch (page 

 177). ^ Ma czpsiphum lactucae ( Patch 1914a)? 



Mem. Soc. Ent. Belg., xii, 239, 1906. 



For description and figures see Theobald (1913a). 

 M. lanceolatum Patch. 



Me. Agr. Expt. Sta., Bull. 282, 215, 1919. 

 M. lilii (Monell). Siphonophora lilii Monell. (Fig. 28, i ; Fig. 

 30, 5 and 6.) 



Rept. U. S. Com. Agr., 221, 1879. 



This aphid is distinguished from M. solanifolii and other lily 

 species by the distinctly black cornicles, as well as slight structural 

 differences of antenna and cornicle. 



On tiger lilies. New Haven, 5 July, 1901 (W. E. B.) ; on Lilium auratum. 

 New Haven, 5 Aug., 1906 (F. B. Chillingworth) ; on Lilium sp., New 

 Haven, 22 July, 1910 (W. E. B.). 



M. liriodendri (Monell). Siphonophora liriodendri Monell. 



Bull. U. S. Geol. Geog. Surv. Terr., v, 20. 1879. 



This species is figured by Gillette (1911b). 



On tulip tree. New Haven, 12 July, 1909 (A. I. B.) ; 28 July, 1910 

 (B. H. W.) ; Greenwich, 13 July, 1910. 



M. luteola (Williams). Siphonophora luteola Williams. 



Aphid, Nebr., 82, 191 1. 



On goldenrod, New Haven, 13 July, 1909 (A. I. B.) ; 26 July, 1912 

 (J. K. L.). 

 M. onagrae Patch. 



Me. Agr. Expt. Sta., Bull. 2821, 212, 1919. 

 M. pelargonii (Kaltenbach). Aphis pelargonii Kaltenbach. 



For description and figures see Theobald (1913b). 



