18 MISC. PUBLICATION 987, U.S. DEPT. OF AGRICULTURE 



DUBROVSKAYA, N. A. 



1959 CONCERNING THE NUMBER OF GENERATIONS OF THE ACACIA FALSE- 

 HARDSCALE PARTHENOLECANIUM CORNI BOUCHE (HOMOPTERA, COC- 



coidea, coccidae). (In Russian, English summary.) Zool. Jour. 38: 



1366-1374. 

 Full discussion of number of generations in Russia on different host 

 plants. 



DUMBLETON, L. J. 



1954 A LIST OF INSECT PESTS RECORDED IN SOUTH PACIFIC TERRITORIES. So. 



Pacific Comn. Tech. Paper 79, 202 p. 

 Lists 83 coocids. 



Du§kova, F., see Lellakova-Duskova, F. 



Elton, C. S. 



1958 the ecology of invasions of animals and plants. London, Methuen 

 and Co., Ltd. 181 p., illus. 

 Discusses 8 very common coccid pests as examples of various points in 

 general thesis. 



Essig, E. O. 



1942 college entomology. New York, Macmillan. 900 p., illus. Coc- 

 coidea p. 340-365. 

 Discusses 85 coccids; Pseudococcus gahani (citrophilus) placed as syno- 

 nym of P. fragilis. 



Ezzat, Y. M. 



1956 HISTOLOGICAL STUDIES ON SOME DERMAL STRUCTURES OF PLANOCOCCUS 



citri (risso) [coccoidea: pseudococcidae]. Soc. Ent. d'Egypte 

 Bui. 40: [349J-356, illus. 

 Studies of wax glands, dorsal ostioles, circulus. 



1956a THE THORACIC SCLEROTIZATION OF COCCID ADULT MALES^AS A PROMISING 



taxonomic character tcoccoiDEA]. Soc. Ent. d'Egypte Bui. 40: 

 [357]-363, illus. 

 Discusses thoracic-sclerotic areas in 6 coccid males. 



1958 CLASSIFICATION OF THE SCALE INSECTS, FAMILY DIASPIDIDAE, AS KNOWN 



to occur in egypt [homoptera: coccoidea]. Soc. Ent. d'Egypte 



Bul. 42: [233]-251. 

 Keys to subfamilies, tribes, genera, and 73 species of diaspidid coccids 

 known from Egypt. 



1958a MACONELLICOCCUS HIRSUTUS (GREEN), A NEW GENUS, WITH REDESCRIPTION 

 OF THE SPECIES [HOMOPTERA: PSEUDOCOCCIDAE-COCCOIDEA]. SOC. Ent. 



d'Egypte Bul. 42: [377]-383, illus. 

 Nomenclatorial status of "Hibiscus mealybug" discussed. Placed in new 

 genus in Planococcini. 



1959 A NEW PLANOCOCCINE MEALYBUG ON STATICE FROM EGYPT [HOMOPTERA! 



coccoidea-pseudococcidae]. Soc. Ent. d'Egypte Bul. 43: [4011-404, 

 illus. 

 Crisicoccus delottoi n. sp. 



1959a TRIONYMUS WILLIAMSI, A NEW SPECIES OF GRASS-INFESTING MEALYBUGS 



from the suburbs of Cairo, egypt. Soc. Ent. d'Egypte Bul. 43: 

 [405]-408, illus. 



1959b A NEW SPECIES OF HUMOCOCCUS FERRIS FROM ALEXANDRIA, EGYPT. SoC. 



Ent. d'Egypte Bul. 43: [4091-412, illus. 

 H. mackenziei n. sp. 



1960 three new mealybugs from egypt. Soc Ent. d'Egypte Bul. 44: 



[23J-32, illus. 

 Amonostherium arabicum, Phenacoccus pyramidensis, Spinococcus con- 

 volvuli n. spp. 



