68 A MANUAL OF DANGEROUS INSECTS. 



Biology: Eggs laid singly on underside of fruit; caterpillars, on hatching, penetrate 

 fruit, increasing size and number of galleries as each successive stage is passed; pupate 

 in ground and emerge as adults in about 12 days. 



Distribution: India, Europe (?). 

 Cotes, E. C. Indian Museum Notes, 1891, vol. 2, No. 1, p. 21. 



Phyllocnlstis citrella Stalnton. 



(Citrus Leafminer. Tineidae; Lepidoptera.) 



Hosts: Citrus. 



Injury: Injurious to citrus nursery stock in India, attacking the buds and young 

 foUage. May be introduced in nursery stock in Wardian cases. 



Description and biology: Adult, head, face, palpi, and legs white, antennse whitish, 

 anterior wings white with two slender gray streaks, posterior wings whitish with pale 

 gray ciUa. Larvae mine the leaves of young nursery stock, the cocoon is usually placed 

 at the edge of the leaf, which is rolled up. 



Distribution: India, Philippine Islands. 



WoGLUM. R. S. U. S. Dept. of Agric, Bur. Entom., Bui. 120, 1913, pp. 27, 28, 



and 40. 



Ceratitls catoirei Gu^rin. 



(Mauritius Fruit Fly. Trypetidae; Diptera.) 

 Host: Tangerine. 

 Injury: Attacks fruit. 



Description: Adult female fly 6-7 mm. long; male 5-6 mm. 

 Distribution: Seychelles Islands, Maviritius; Isles of Bourbon. 

 Fboggatt, W. W. Proc. Linn. Soc, New South Wales, 1910, vol. 35, pt. 4, p. 864, 



Dacus sequalis Coquillett. 



(Large Australian Fruit Fly. Trypetidae; Diptera.) 



Host: Orange. 



Injury: Larvae feed on oranges. 



Description: Adult female length 8-9 mm. (excluding ovipositor). Front margin 

 of wings with broad ferruginous stripe. Antennae long, and body wasp-shaped. 



Distribution: New South Wales. 

 Froggatt, W. W. Dept. Agric, New South Wales, Farmers' Bui. 24, 1909, p. 26. 



Dacus ornatissimus Froggatt. 



(Mandarin Finiit Fly. Trypetidae; Diptera.) 



Host: Mandarin. 



Injury: Breeds in fruit. 



Description: Adult female 6 mm. in length, general color chestnut brown to ocher- 

 ous, dorsal surface of thorax black, abdomen ocherous with narrow dark indistinct 

 transverse lines. (See plate xxviii, figs, a, c.) 



Distribution: New Caledonia. 

 Froggatt, W. W. Dept. Agric, New South Wales, Farmers' Bui. 24, 1909, p. 28. 



Coccidse: 



Armored- 



IMPORTANT CITRUS INSECTS. 



HEMIPTERA. 



Aspidiotus (Aonidiella) subrubescem Maskell; New South Wales. Scale o( female reddish brown, 



flat, subcircular, exuvia central forming a slightly elevated boss. 

 Aspidiotus {Chrysomphalus) albopictus Cockerell; Mexico. Scale of female 2-2.25 mm. in diameter, 



dark brown and often covered with a white secretion, exuvia central and free of secretion. 

 Aspidiotus (Chrysomphalus) koehelei Townsend and Cockerell; Mexico. Scale of female 1.5-2 mm. In 



diameter, circular to suboval, light brown to grayish, exuvia to one side. 

 Aspidiotns ( Chrysomphaius) personatus Comstock Bermuda. (See Olive.) 



