54 THE CALIFORNIA SPECIES OF MEALY BUGS 



Notes: An examination of the types of Pseudococcus sequoiae (Colem.) in 

 the Stanford collection shows that this species was based upon the male of a 

 species of Puto and the female of a species of Pseudococcus. As this male was 

 later redescribed by Coleman under the name of Pseudococcus cupressi the name 

 sequoiae must be retained for the female of the original description. This is the 

 species which has ordinarily passed as P. ryani (Coq.), but that name appears 

 rightfully to belong to another species. 



Pseudococcus timberlakei Ckll. 



Plate 2, fig. 19. 

 1916. Pseudococcus timberlakei Ckll., Jn. Econ. Ent. 9:312. 



In life. "The lateral and caudal secretions of the active females 

 closely resemble those of Pseudococcus citrophilus Claussen, figured on 

 page 20, Calif. Exp. Sta. Bull. 258" (Timberlake's notes, quoted by 

 Cockerell). 



Morphological characteristics. With 17 pairs of cerarii, all with 

 but two cerarian spines which are quite small except in the anal lobe 

 cerarii in which the spines are large and stout. Lateral cerarii with few 

 or no grouped pores and, except for the posterior one or two pairs, with- 

 out auxiliary setae. Anal lobe cerarii surrounded by a conspicuous defi- 

 nite chitinized area bearing numerous long setae and many scattered 

 pores. Ventral side of anal lobes with a small irregular chitinized area. 

 Dorsal body setae numerous, quite long and slender. Triangular pores 

 very few. Dorsum with many small cylindrical ducts without a raised 

 rim about the mouth. Anal lobe setae and anal ring setae about equal, 

 quite long. Anal ring of the usual type. 



Type host and locality. From "salt marsh grass" (probably Dis- 

 tichlis spicata) at Milbrae, San Mateo County, Calif., October. 



Hosts and distribution. Known only from the San Francisco Bay 

 region. I have taken it from Distichlis spicata in the salt marshes at 

 Palo Alto. 



Authentication. Specimen compared with type by Mr. Morrison. 



Notes: This differs markedly from P. salinus (Ckll.) which occurs upon 

 the same host, the well developed anal ring alone being sufficient to distinguish it 

 from that species. It really most nearly resembles Trionymus calif ornicus Ehrh. 

 although the two are regarded as generically separate because of the difference in 

 the number of cerarii. A further discussion of this resemblance will be found 

 under the description of T. calif ornicus. The species appears to be rather rare, 

 at least much more so than either P. salinus (Ckll.) and Trionymus distichlii 

 n. sp., which are found with it. Like these species, there is but a single brood, 

 which matures in September or October. 



