INSECT NOTES FOR I9IO. II 



wing veins (Fig. 18) the reader is referred to "Die Fossilen 

 Insekten"** and to "Homologies of Wing Veins"*** for the 

 interpretation of Sc and R. 



Psylla pyricola. 



Apparently the first record of an infestation of the common 

 pear tree psyllid in Maine was given by a correspondent in 

 Camden, Maine, September lo. The pear leaves submitted were 

 badly discolored both by the psyUid work and the attendant hon- 

 ey dew fungus. Nymphs, pupae and adult psyllids were abun- 

 dant at this date. 



Psylla floccosa. 



The downy psylHd of the alder was very abundant upon the 

 new growth of Alniis incana (L.) Moench, this spring. This 

 species was described in The Canadian Entomologist Vol. 41, pp. 

 301-303. For the sake of comparison with the two new species 

 of this genus which follow a few characters of floccosa are here 

 given. 



Head. The head is broader than the prothorax, and of prac- 

 tically the same type as that of galcaformis. The epicranial 

 plates are distinctly separated by a median suture and the 3 ocelli 

 are arranged as in galcaformis. Like the 2 other representa- 

 tives of this genus here described the antennae are normally 10- 

 jointed and a single distal circular sensorium is borne upon 

 joints IV, VI, VIII and IX. The terminal spine-like setae are 

 nearly equal in length. Slender setae are present, but not num- 

 erous, on joints III-X inclusive. The antenna is about 2.5 mm. 

 long and filiform and the tip extends nearly to the genital seg- 

 ment of the abdomen. Fig. 8 gives the head in cephalic aspect. 



Wings. Fig. 5. The wings are colorless but in form and 

 venation they are exceedingly similar to galcaformis, and the 

 stigma though indicated is very narrow and pale. The wing is 

 abort 4.2 mm. long. 



Genitalia. Male. The supra-genital plate is somewhat cylin- 



**Too5-igo8. A. Handlirsch. Die Fossilen Inseliten und die Phy- 

 'ogenie of Rezenten Formen. 



***T'^00. Edith AT. Patch. Homologies of the Wing Veins of the 

 Apliididae, Psvllidae, Aleurodidae and Coccidae. Annals of the Ento- 

 mological Society of America, Vol. 2, No. 2. 



