NEW SPECIES OF DIASPINE SCALE INSECTS. 31 



broad, triangular; width 0.3 mm., length 0.24 mm.; more cliitinized 

 than i)yri: lobes in two pairs; median large, each 0.15 mm. broad, 

 obtusely pointed; inner margin with one notch, outer margin oblique, 

 with four or more fine teeth; second lobe much smaller and lower than 

 median, close to the latter, outer margin oblique, with 2 to 4 mmute 

 teeth; incisions normal; paraphyses represented by two rounded, 

 loiobbed chitinous processes attached to the inner end of each of the 

 first and second lateral marginal lunar pores, bringing them at or near 

 the outer bases respectively of the median and lateral lobes; plates 

 inconspicuous; between the median lobes and in the first lateral 

 incision two very short, scarcel}^ discernible simple plates; three 

 slightly longer simple plates occur in the second incision ; beyond the 

 second incision no plates easily discernible; spines normal; anal 

 opening subcentral, situated just in front of vaginal opening, equaling 

 in diameter width of median lobe; paragenitals in four grouj^s of 

 about 6 pores each, the anterior group apparent^ not represented in 

 the specimens examined; basal thickenings a distinct narrow line, 

 oblique lateral portion of same character as central and scarcely sepa- 

 rated from latter; ventral thickenings diffused, normal. 



Type. — Bureau of Entomology No. 14138. On crab-apple, Tien- 

 tsin, China, October 11, 1901 ; collector, C. L. Marlatt. 



Note. — This anomalous ParJatoria was first collected b}^ the writer 

 on a small tree, possibly a crab-apple, growing near the railway station 

 at Taira, Japan, August 30, 1901. This tree was thickh^ infested, 

 and this was the only example of this insect found in Japan. In 

 China the writer collected it at Chefoo on Hihiscus (October 4, 1901), 

 and later, October 11, on crab-apple at Tientsin. The latter lot has 

 been indicated as the type material. What is evidently this insect 

 was also collected by the writer (March 12, 1902), in Cairo, Egypt, 

 on an unknown plant, which it infested in conjunction with Parlatoria 

 affinis Newst. The Egyptian variety differs slightly in the exterior 

 serration of the median lobes, these serrations or notches being re- 

 duced to two or three instead of four or more, and the central lobular 

 projection is somewhat larger. The paragenitals also are less abund- 

 ant, ranging as follows: 0, 0-3, and 1-2. 



The same insect was found on plants imported for the Depart- 

 ment of Agriculture by F. N. Meyer, from Peking and northern 

 China, namely, on Xanthoxylon, received Ma}^ 2, 1907, on Tliuja 

 orientalis, received March, 1908, and on jujube, received April 21, 

 1908. From these records it is evident that it is a common and 

 widespread species in northern China, and probably will be found to 

 occur through ut eastern Asia. The Eg3q3tian variety may have 

 been a recent importation, or the range of the species may be much 

 wider in the Old World than that indicated. 



This insect is remarkably like Parlatoria pyri in general appear- 

 ance and characters, and is very likel}^ closely related to the latter 



