A SYNOPSIS OF THE APHIDIDAE 69 



Measurements: Body length (exclusive of cauda), 2.11 mm. ; width 

 of thorax, 0.91 mm. Antennae : total, 2.07 mm. ; I, 0.12 mm. ; II, 

 0.09 mm. ; III, 0.76 mm. ; IV, 0.55 mm. ; V, 0.47 mm. ; VI, 0.12 mm. ; 

 spur, 0.78 mm. ; cornicles, 0.91 mm. ; cauda, 0.45 mm. ; beak, 0.89 mm. ; 

 hind tarsus, 0.14 mm. Wing: length, 3.6 mm.; width, 1.25 mm.; 

 expansion, 8.11 mm. 



78. Macrosiphum sanborni Gillette 



Figures 141, 155 



Sanborn, Kans. Univ., Sci. Bull. 3, p. 73, 1904. Macrosiphum chrysanthemi 



(desc. ala. vivi.). 

 Gillette, Can. Ent., vol. 11, p. 65, 1908 (orig. desc. apt. vivi.). 



Records. Chrysanthemum; Stanford University, May, 1915; Riverside, March, 

 1917. 



Twice has the author found this species: once a small infestation 

 in the greenhouse of Stanford University, and once abundantly out 

 of doors in Riverside. It is an interesting species in that it does not 

 fit well into any known genus. Except for the cornicles it fits Macro- 

 siphum and has been so considered. The cornicles are, however, short, 

 being scarcely longer than the cauda, and are somewhat bottle-shaped, 

 being considerably smaller at the apex than at the base. 



79. Macrosiphum solanifolii (Ashmead) 



Figures 137-140, 159-160 



Ashmead, Can. Ent., vol. 12, p. 91, 1881. Siphonophora (orig. desc.). 



Clarke, Can. Ent., vol. 35, p. 252, 1903. Nectarophora citrifolii (Ashmead) 

 (list). 



Davidson, Jour. Econ. Ent., vol. 31, p. 380, 1910. Macrosiphum citrifolii 

 (Ashmead) (list). 



Essig, Pom. Jour. Ent., vol. 3, p. 592, 1911. Macrosiphum citrifolii (Ash- 

 mead) (desc.). 



Davidson, Jour. Econ. Ent., vol. 5, p. 411, 1912 (list). 



Patch, Maine Agr. Exp. Sta., Bull. 242, 1915 (desc.). 



Records. Citrus sp. ; Azusa, Los Angeles County (Clarke); Lindsey, Tulare 

 County (Clarke) ; Santa Paula (Essig) ; Disporum Tnookeri; Berkeley, May, 1915 

 (Shinji) : Solatium nigrum; Stanford University, October, 1916 (Ferris) : Fuchsia 

 sp. ; Berkeley, July, 1915: Sonohus asper and S. oleraoeus; Stanford University, 

 February, 1915: apple; Stanford University, May, 1915; El Cajon, San Diego 

 County, July, 1916: Atriplex sp. ; Berkeley, September, 1915: Oxalis corniculata, 

 Eiverside, February, 1917: Deinandra fasciculata, Eiverside, February, 1917: 

 Erodium moschatum; Pasadena, April, 1917 (E. E. Campbell); Eiverside, April, 

 1917. 



