22 ENTOMOLOGICAL NEWS. [Jan., 'lO 



A New Species of Aspidiotus. 



By GLENN W. HERRICK. 



(Plates II, III) 



Aspidiotus mori n. sp. 



Scale of female. Quite large, 2-2 ]/2 mm. in diameter; circular, flat, 

 thin and very inconspicuous with the edges closely applied to the bark. 

 It is reddish-gray in color and very like the bark of the mulberry. The 

 exuviae are bright yellow and central. A thin, white ventral scale is 

 present. 



Scale of male. Like that of the female, except that it is smaller and 

 elongated. 



Female. The body is circular with a long, pointed and very charac- 

 teristic pygidium (Plate III, Fig. 1), reminding one of the pygidium of 

 Chrysomphalus perseae. The pygidium is rather strongly chitinized 

 and has one pair of prominent lobes, the median ones. These are well 

 developed, nearly parallel on their mesal edges and quite close together. 

 The caudal margins are rounded and the lateral margins slope sharply 

 toward the first incision and are conspicuously notched about one-third 

 of the distance from the apex. These lobes, in shape and general ap- 

 pearance, strongly resemble the median lobes of A. forbesi. There is a 

 strongly curved, chitinous process at the inner base of each median 

 lobe (Plate III, Fig. 3). The first incision is bounded on each side by a 

 characteristic, club-shaped process, the inner one much the larger and 

 more conspicuous. Two pore openings are present in the incision. 

 The second incision is also bounded by two prominent club-shaped 

 thickenings. There are two long, pectinae (furcated plates) in the first 

 incision and three plates in the second. The spines, on the dorsal sur- 

 face, are situated at the bases of the lateral margins of the median 

 lobes and the very rudimentary second and third lobes. A fourth spine 

 is situated about one-third of the distance to the penultimate segment 

 and two more a little distance from the base of the pygidium. The 

 ventral spines are a little laterad of these (Plate III, Fig. 3). The 

 anal aperture is small and situated very low down below the apices 

 of the two large club-shaped processes of the first incision. 



There were four groups of circumgenital pores (Plate III, Fig. 2) 

 in all the specimens examined and they ran as follows in six average 

 individuals : 



13-14 11-12 15-13 15-11 12-12 11-14 

 8-7 9-8 9-8 7-8 7-8 10-9 



The vaginal opening is conspicuous and is situated between the caudo- 

 lateral groups of circumgenital pores. Described from many indi- 

 viduals. 



Host plant. On the undersides of the branches of native red mul- 

 berry trees (Morns rubra). 



