150 A MANUAL OF DANGEROUS INSECTS. 



MULBEBRY. 



( Morus s^p^p. Family Moracese.) 



Trees of the temperate regions of the Old and New World. Some species produce 

 delicious fruit, while others are cultivated for hedges or as food for silk worms. 



IMPORTANT MULBERRY INSECTS. 



HEMIPTERA. 

 Coccidse: 



Unarmored — 



Ceroplastes rusci Lirmjeus; Italy. 



GiUrinidla serratulx Fabricius; Italy. 



COLEOPTERA. 

 Ceraiiibycidae. 



Apriona germari Hope and A. cinerea Chevrolat; India; bore in stems of Morus indica. 



LEPIDOPTERA. 

 Geometridae. 



Hemirhopala atrilineafa Butler; Japan; defoliator. 

 Zamacra albofasciaria Leech; Japan; defoliator. 



LITERATURE. 



SoEAUEE, P. Handbuch der Pflanzenkrankheiten, 3d ed., 1913. vol. 3. 

 Stebbing, E. p. Indian Forest Insects, Ck)leoptera, 1914, 



MUSKMELON. 



(See Cucurbits.) 



NARCISSUS; DAFFODIL. 



(Narcissus spp. Family Amaryllidaceae.) 



Flowering plants propagated from the bulbs. 



NARCISSUS INSECTS. 



Merodon clavipes Fabricius; ;)< Merodon equestris Fabricius. 

 (Narcissus Flies. Syrphidae; Diptera.) 



Hosts: Narcissus, daffodil. 



Injury: Breeds in the bulbs. 



Description and biology: M. clavipes black, clothed with white, yellow, red, or black 

 hairs. >]< M. equestris black or dark metallic green, similarly clad; 13 mm. long. 3£ag- 

 got grayish yellow, 12 mm. long. 



Distribution: Europe. Have been introduced into Canada, California and New 

 Zealand. 



SoRAUER, p. Handbuch der Pfianzenkrankheiten, 3d ed., 1913, vol. 3, p. 435. 



OAK. 



(Quercus spp. Family Cupulif erse . ) 



Valuable timber trees of the northern hemisphere. The bark of certain species 

 yields cork, while of other species it is valuable for medicinal or tanning purjioses. 



A. BETTER KNOWN OAK INSECTS LIKELY TO BE IMPORTED. 



^Agrilus viridis Linnaeus. 



(Flat-Headed Wood Borer. Buprestidse; Coleoptera.) 



Hosts: Oak, beech, alder, aspen, linden, birch, rose, grape, maple, pine. 

 Injury: Bores in stems and branches of trees. 



