130 



(h). — A small maggot, causing the edges of violet leaves to curl and 

 turn yellow. 



Violet Gall-Fly. (Diplosis violicola) 



Control. — Hand picking infected leaves. 



(i). — A small greenish white and striped caterpillar, eating lower 

 epidermis of leaves of chrysanthemums, cinerarias, roses, carnations, etc., 

 and tying the leaves together. 



Greenhouse Leaf-Tyer. (Phlyctaenia ferrugalis) 



Control. — Hand picking infested leaves; trapping the moths, spray- 

 ing leaves with arsenate of lead. 



III. — Insects Affecting Domestic Animals. 

 Sheep. 



(a). — Maggots in nostrils and in nasal sinuses, causing catarrh and 

 staggers — deposited by 2-winged fly in June and July. 

 Sheep Bot-Fly. (Cestrus ovis) 

 Control. — Smear noses with equal parts of tar and grease. 

 (b). — Wool falls off and large scabs form on body, with much itching. 



Sheep Scab. (Psoroptes communis) 

 Control. — Apply a good sheep dip. 



(c).- — Brownish flattened tick-like insects sucking the blood — common 

 on lambs in spring. 



Sheep Tick. (Melophagus ovinus) 

 Control. — "Dip" the sheep after shearing. 



Cattle. 



(a). — Swellings or "warbles" along the back in winter. 

 Ox-Warble. (Hypoderma lineata and H. boris) 

 Control. — Apply grease to the warbles when observed. 

 (b).^ — Small flies clustering on base of horns, flanks and belly of cattle 

 in summer, causing much annoyance. 



Horn Fly. (Haematobia serrata) 

 Control. — Spray with zenoleum or kerosene emulsion; apply fish oil 

 and tar with rag. 



(c). — Slaty-coloured sucking lice, often abundant on neck and shoulders 

 of cattle not well looked after. 



Short- Nosed Ox Louse. (Haematopinus eurysternus) 

 Long- Nosed Ox Louse. (Haematopinus vituli) 

 Control. — Black Leaf 40 (1 part to 1000 of water) or an infusion of 

 4 oz. stavesacre seed and 1 oz. hellebore. 



