% 



NO. 2150. SUBFAMILY ALEYRODINAE—QUAINTANCE d- BAKER. 421 



DIALEURODES (RUSOSTIGMA) EUGENIAE (MaskeU). 



Plate 68, figs. 1-5. 

 Aleurodes eugeniae Maskell, Trans. N. Zealand Inst., vol. 27, 1896, p. 430. 



This species is represented by one pupa case in balsam mount in 

 the Maskell collection. It is in rather poor condition, being more or 

 less covered with a fungous growth. 



Pupa case (fig. 1). — Size 1.38 by 1.04 mm. Outline regularly 

 elliptical; median dorsal area dark brown, on which the prominent 

 thoracic sutures show clearly transparent. The abdominal sutures 

 are not so distinct. The tracheal folds (fig. .3) show very promi- 

 nently owing to a reticulate sculpturing with which they are covered. 

 The pores (fig. 2) are situated some distance in from the margin and 

 are armed mth about 16 rather distinct teeth. The fold is delineated 

 by fine ridges, which border the sculptured area and encircle the 

 outer margin of the pore. The vasiform orifice (fig. 4) is subcordate 

 in outline, with the cephaUc margin but little rounded. The inner 

 margin of the orifice is devoid of teeth common to citri and citrifolii. 

 The operculum is of much the same shape as the orifice and nearly 

 fills it. The tip of the setose lingula appears to protrude below the 

 caudal margin of the operculum for some distance, but this may be 

 due to the preparation of the momit. The marginal area of case is 

 marked by sutures running a considerable distance mesad, forming 

 a zone all around case, about one-third diameter of case. 



Adults. — Unknown. 



Habitat. — India, on Eugenia jambolana. 



DIALEURODES (RUSOSTIGMA) RADURUGOSA, new 



Plate 69, figs. 1-9. 



This species is represented by two lots of material. One lot was 

 taken on mango by R. S. Woglum, BriUiton Isle, Dutch East Indies, 

 February 5, 1911, and the other was taken on a ''woody shrub" by 

 C. L. Marlatt at Gerolt, Java, December 7, 1901. The material in 

 both cases is composed of pupa cases only. The species suggests 

 eugeniae, owing to the distinct reticulate areas of the tracheal folds. 

 It is readily distinguished from this species, however, by the extent 

 of the reticulate area, and the unsculptured, circular area immediately 

 surrounding the marginal pore. 



Egg. — Short, ovate, with short stalk, the eggs being held upright 

 on leaf; color dark brown, apparently without reticulation. 



Pwpa case (fig. 6). — As seen on leaf the color is dirty white or 

 yellowish. The dorsal disk is but little elevated, and the submar- 

 ginal area is rather clearly dehneated as a radiate band all around, 

 this appearance resulting from the sutures of the wax tubes. The 

 case is void of any waxy secretion; under the microscope the color 



