86 



11-14. Andricus terminalis (oak-apple) : perfect insects and 

 enlarged drawing : gall in situ and sketch showing one in 

 section. 



15-18. Andricus ramuli (cotton-gall) : perfect insect and 

 enlarged drawing ; gall and sketch of same. 



19-22. Andricus curvator (leaf-twister-gall) : perfect insect 

 and enlarged drawing ; affected leaves and sketch of galls. 



23-26. Aphilothrix gemmce (artichoke-gall) : perfect insect 

 and enlarged drawing ; galls and sketch of same showing one in 

 section. 



27-30. Aphilothrix radicis (root-gall) : perfect insects and 

 enlarged drawing ; gall in section a/id sketch of same. 



31-35. Neuroterus, sp. (oak spangles) : perfect insect and 

 enlarged drawing ; leaf with galls, and sketches of two species of 

 the same (N. lenticalaris and iV. numisatis). 



36-39. Spathegaster baccarum (currant-gall) : perfect insect 

 and enlarged drawing ; models of gall on leaf, and drawings of 

 same on leaf and on catkin. 



E. 141. 1886. 



Insects injurious to Hops. 



1, 2. Phorodon humuli (hop aphis) : perfect insect and en- 

 larged drawings of winged male and female, apterous female and 

 pupa. 



3-14. Insects which destroy the hop aphides. 



3-8. Goccinellce, spp. (ladybird beetles) : various species, 

 with larvae and enlarged drawing of same. 



9-11. Syrphus, sp. (hovering fly) : perfect insect ; draw- 

 ing of larvae, natural size and enlarged seizing aphis. 



12-14. Lace-wing fly : perfect insects; drawings of eggs 

 and of larvse known as " aphis-lion." 



15-21. Tetranychus telarius (red spider) : specimens of the 

 mite ; enlarged drawings of red and green varieties, and of 

 immature stage ; infested leaves. 



22, 23. Euacanthus interruptus : perfect insect, enlarged 

 drawings of red and yellow varieties. 



24, 25. Lygus umbeliatarum (hop bug) : perfect insect and 

 enlarged drawing. 



26-28. Haltica (Plectroscelis) concinna (hop flea-beetle) : 

 perfect insect, with enlarged drawing ; affected leaf. The 

 beetles gnaw holes in the leaf and the larvae burrow between 

 its upper and lower surfaces. 



29-34. Hepialus humuli (otter moth, or ghost swift) : perfect 

 insects, male and female, with drawings ; larva and pupa. 



35-40. Orgy ia pudibunda (hop-dog or pale tussock moth) : 

 perfect insects, male and female, with drawings ; larvse and leaf 

 attacked by them. [See also Insects injurious to Oak Foliage, 

 Nos. 46-53.] 



