3o 



The Horticulturist' e Rule-Book. 



Lice. — See Aphides. 



May-Beetle or May-Bug (Lachnostema fusca, FrohL) — A large and 

 familiar brown beetle, feeding upon the leaves of many 

 kinds of trees. The common white grub is the larval state. 

 It often does great damage to sod and to strawberries. 



Remedies.— For beetle, use arsenites, orajar them early in 

 the morning. For grubs, plow up the lawn so as to expose 

 them to field-birds and poultry, or turn in hogs. 

 Mealy Bug (Dactylopius adonidum y .Linn.). — A white scale-like 

 insect attacking gre< : House plants. 



Remedies. — AlcohoLa decoction of pyrethrum. Knock them 

 off with a hose. Whale-oil soap. Carbolic acid and soap. 

 Removing insects with brush on tender plants. Whiskey, 

 applied with a brush. Fish-brine. 

 Melon. Melon-Worm (Eudioptis hyalinata, Linn.) .—Larva, some 

 over an inch long, yellowish green and slightly hairy, feed- 

 ing on melon-leaves, and eating holes into melons, cucum- 

 bers and squashes ; two or more broods. 

 Remedy.— Hellebore. 

 Spotted Cucumber-Beetle. — See under Cucumber. 

 Striped Cucumber-Beetle. — See under Cucumber. 

 Squash-vine Root-Borer. — See under Squash. 

 Mite (Tetranychus himaculatus, Harvey). — Much like red-spider in 

 size and shape, but light-colored, with two dark spots behind. 

 Feeds upon the under side of the leaves of many greenhouse 

 plants. A very serious pest. Evidently known also as ' ' Ver- 

 bena Mite." 

 Remedy. — Hughes' fir-tree oil. 

 Mushroom. Mushroom-Fly. — The larva bores through the stems 

 of the mushrooms before they are full-grown. 



Preventive. — Keep the beds cool so that the fly cannot 

 develop. When the fly is present, growing mushrooms in 

 warm weather is usually abandoned. 

 Onion. Maggot (Anthomyia c^parum, Meigen). — Nearly indis- 

 tinguishable from the cabbage-maggot, which see. 

 Orange. Katydid (Microcentrum retinervis, Burm.). — A large 

 green grasshopper-like insect, feeding upon the foliage. It 

 is largely kept in check in some localities by a parasitic 

 chalcid fly. 



Remedy. — Collect the eggs, which are conspicuous on the 

 borders of the leaves. 



