10. 
16. 
eh. 
18. 
INSECTS INJURIOUS TO THE ALDER AND WILLOW. 141 
Order DIPTERA. 
Cecidomyia serrulate O. Sacken. (District of Columbia, on Alnus 
serrulate. O. Sacken. Monogr., i, 198.) 
Order COLEOPTERA. 
. Dichelonycha elongatula (Schinhen). (In coitu, June 10, Brunswick, 
Me. Packard.) 
. Calligrapha scalaris Leconte. (Maine, Packard.) 
. Attelabus rhois Boh. (Rolling up the leaves into cylinders in June 
and July, depositing an egg in the center. Orono, Me., Packard. 
Memoirs Peabody Academy of Science, Salem, iii, 1872, 7.) 
. Saperda (Mecas) inornata Say. (Making temporary galls in sap- 
lings of Salix longifolia.) 
. Saperda lateralis Fabricius. (Mr. George Hunt has found this beetle 
attacking the alder in Rhode Island.) 
Pogonocherus mixtus Hald. Abundant. (Can. Ent., iii, 1881, 60.) 
Order HEMIPTERA. 
Lachnus alnifolie Fitch. 
Schizoneura tessellata Fitch. (Alder blight. Common in Maine.) 
WILLOW (Salix various species). 
Order HyMENOPTERA. 
The following list of saw-fly larve, producing galls on different spe- 
cies of willow, is taken from Walsh, Proceedings of the Entomological 
Society of Philadelphia, v, 284. 
i, 
. Huura 8S. gemma Walsh. . (On Salix humilis.) 
3. 
4, 
5. 
6. 
hs 
8. 
9. 
10. 
11. 
12. 
13. 
Euura orbitalis Norton. (Galls on Salix humilis Walsh.) 
EHuura 8. ovum Walsh. (On Salix cordata.) 
Huura 8S. ovulum Walsh. (On Salix humilis.) 
EKuura 8S. nodus Walsh. (On Salix longifolia.) 
Nematus S. pomum Walsh. (On Salix cordata and very early on S. 
discolor.) 
Nematus S. desmodioides Walsh. (On Salix humilis.) 
Nematus 8S. pisum Walsh. (On Salix discolor.) 
Nematus inquilinus Walsh. (Guest, bred from Cecidomyidous gall 
S. rhodoides.) 
Nematus hospes Walsh. (Guest, bred from Cecidomyidous gall 
S. rhodoides.) 
Nematus mendicus. (Guest, bred from gall of N. s. pomum.) 
Nematus fur Walsh. (Guest, bred from gall of C. s. batatas on Salix 
humilis.) 
Pristiphora sycophanta Walsh. (Guest, in gall of C. s. brassicoides.) 
