No. 34-] HEMIPTERA OF CONNECTICUT: COCCIDAE. 369 



Aulacaspis Cockerell. 



The species of this genus were formerly included under Diaspis, 

 and are now placed there by some authors who do not regard 

 Aulacaspis as being distinct. Female scale nearly circular, white, 

 the exuviae near the margin. Pygidium with five groups of 

 circumgenital gland-orifices. Scale of male strongly tricarinate. 



Key to Species. 



Median lobes with both margins free; lateral groups of circum- 

 genital gland-orifices well separated pentagona 



Median lobes with only the inner margins free; lateral groups 

 of gland-orifices almost continuous rosae 



A. pentagona (Targioni-Tozzetti). Diaspis pentagona. Diaspis 

 amygdali. Diaspis lanatus. West Indian peach scale. (PL 

 xiv, 9.) 



Revis. di Bacchic, 11, 1885. 



Scale of female: Diameter 1.75-2.75 mm., opaque, white, nearly 

 circular, convex ; exuviae yellow near margin. 



Female: Median lobes large, slightly separated at base, round- 

 pointed, both margins free and deeply and coarsely notched. Five 

 large groups of circumgenital gland-orifices, varying in number 

 but the groups well separated; median, 6-13; anterior lateral, 

 14-32 ; posterior lateral, 12-30. 



Scale of male: Length .75-1 mm., white, faintly tricarinate. 



On various species of Prunus from Japan, and many other hosts. 

 It has been found in Connecticut on Chinese privet, Ligiistrum 

 ibota, lilac, Catalpa bungei and cherry. 



Greenwich, 21 Oct., 1913, 27 Oct., 1914, 26 Sept., igi6, 8 Oct., 1917 ; 

 New London, 18 Apr., 1914; New Haven, 6 Aug., 1917. 



A. rosae (Bouche). Diaspis rosae. (PI. xiv, 8.) 



Naturg. Ins., 14, 1834. 



Scale of female : Diameter, 2-3 mm., snowy-white, sometimes 

 yellowish, exuviae usually near margin, yellowish. 



Female: Median lobes large, slightly separated, widely diver- 

 gent, inner margins free and finely serrate. Lateral groups of 

 circumgenital gland-orifices almost continuous; median group 

 18-22 ; anterior lateral, 25-32 ; posterior lateral, 26-34. 



Scale of male: Length i. 25-1. 5 mm., white and tricarinated. 



Common throughout the state on rose, raspberry and blackberry. 



Groton, 13 Aug., 1900; Clintonville, 23 Apr., 1902; Danielson, 21 Nov., 

 1902; New Haven, 14 June, 1903, 28 Apr., 1906, 5 Apr., 1907, 5 Dec, 1909, 

 6 Aug., 1917, 20 Aug., 1919; Plantsville, 22 Apr., 1903; Berlin, 20 Nov., 

 1917; Yalesville, i Feb., 1905; Simsbury, 18 Apr., 1905, 14 Apr., 1917 ', 

 Norwich, 25 March, 1907, 28 Aug., 1909; South Manchester, 3 Aug., 1909; 

 Rockville, 22 Dec, 1909; Bristol, 12 Apr., 1910; Greenwich, 7 Nov., 1910; 

 Uncasville, 4 Aug., 191 1 ; Hartford, 2 July, 1914, 30 Oct., 1917. 



