674 



STATE BOARD OF AGRICULTURE. 



LECANiUM (Eulecanium) prunastri Fonsc. 



A small globular species of Lecanium mentioned by Mr. J. G. 

 Sanders, State Economic Zoologist of Pennsylvania, as occurring on 

 Apricot, Peach and Sweet cherry, is included here because of the likeli- 

 hood of its occurrence in Michigan sooner or later. 



Mr. Sanders very kindly has furnished us material for study, but 

 we have been unable to prepare satisfactory mounts thus far, due in 

 part to the globular form of the insect and to the stage in which it 

 was collected. Mr. Sanders mentions in his description, the derm-pores 

 extending in a large oval patch cephalad of the analplates. Our figure 

 shows this patch in a specimen obtained from Dr. Sanders. 



While the material did not yield good mounts for a drawing, the 

 following characters seem to be apparent: 



Ten spines in the anal ring, two of them slender, one being sometimes 

 very slender so that there appear to be only nine at times. There are 

 about twelve hypopygial setae, long and slender, three apical setae, and 

 two or more sub-apical setae. There seem to be two fringe setae on 

 each side. 



Antennae well developed, slender and of six or seven joints. Feet 

 well developed. 



LECANIUM (Coccus) HESPERIDUM LiuU. 



A common Lecanium in greenhouses, of oval form, usually slightly 

 broader behind, rather flat and varying from 1/8 to 3/16 inch in length 

 and from 1/16 to 1/8 inch broad. It is extremely variable in color, 



Figure. 10. 



Lecanium hcspcridum. — Antenna ; spiracu- 

 lar setae ; and ventral view of anal- 

 plates. 



•.Jour. EcoD. Ent. Vol. 2, No. 6, p. 446. 



