CLASSIFICATION AND DESCRIPTION OF COMMON INSECTS I33 



Long-tailed Mealy Bug {Pseudococcus longispinus Targ.). — A small 

 mealy coated insect, viviparous, occurring on Coleus, ferns, croton, 

 Poinsettia and citrous plants (Fig. 81). 



Citrus or Greenhouse Mealy Bug {Pseudococcus citri Risso). — Ovi- 

 parous; occurs on Coleus, ferns and citrous plants. Common (Fig. 

 81). 



Clover Root Mealy Bug {Pseudococcus trijolii Forbes). — Occurs near 

 the crown of second year red and white clovers in clusters, often accom- 

 panied by ants. Two forms exist — winter females, hatched from eggs 

 in the fall, producing larva; in the spring, some feeding on the roots and 



Fig. 84. — Aspidistra scale 

 (Hemichionaspis aspidistrae). Fe- 

 male scale, enlarged. {After 

 Forbes.) 



Fig. 85. — Male scale of the 

 Aspidistra scale, enlarged. 

 {After Forbes.) 



others on the leaves; and summer females, producing several generations. 

 Oviparous females lay eggs in the fall after mating with males (Fig. 81). 

 Woolly Maple Leaf Scale {Phenacoccus acericola Walsh and Riley). 

 — A pest of maple trees, often confused with the Cottony Maple Scale. 

 Oviparous, 3^^ to 3-^ inch long, yellow, rounded-oval. 



Other Greenhouse Scales 



Lemons, crotons, oleanders, ivies, etc. in greenhouses are frequently 

 attacked by species of Coccus, Saissetia, AspidlotusjChrysomphaUts, 



