Decemoer, '09] JOURNAL of ECONOMIC ENTOMOLOGY 441 



Saissetia nigra King, Psyche, IX, p. 296 (1902). 



Saissetia nigrella King, Psyche, IX, p. 296 (1902). 



Coccus nigrum Kirkaldy, Fauna Haw., Ill, pt. 2, p. 106 (1902). 



This species is of less importance in the United States than either of 

 the other species of this genus mentioned here. Its distribution has 

 been effected to all quarters of the globe, occurring on many different 

 plants. In some of the West Indian Islands it is a very important 

 cotton pest and difficult to control. 



It is included in this paper principally to record its synonj^ms which 

 have been described from various regions and until recently held as 

 distinct species. 



The European Peach Scale 



Lecanium persicce (Fab.) 



Plate 19, Fig. 8 



Chermes persicce Fab., Gen. Ins. Mant., p. 304 (1776). 

 Chermes clematitis Gmel., Syst. Nat, Ed. XIII, p. 2220 (1789). 

 Lecanium cymhiformis Targ., Catalog. Coccidarum, p. 37 (1868). 

 Lecanium berderidis Sign. (non. Schr.^) Essais, p. 233 (1873). 

 Lecanium genistce Sign., Essais, pp. 235, 484 (1873). 

 Lecanium persicce Sign., Essais, p. 237 (1873). 



Lecanium rosarum Sign., Essais, p. 257 (1873), (non Sn. v. Veil., 1862). 

 Lecanium berberidis Mask., N. Z. Trans., XXIX, p. 311 (1897). 

 Lecanium subaustrale Ckll., The Entom., XXXI, p. 131 (1898). 

 Lecanium magnoliarum Ckll., Ent. News, IX, p. 146 (1898). 

 Lecanium magnoliarum var. hortensiw Ckll., Psyche, X, p. 19 (1903). 



The genuine L. persicae is a large chestnut brown species 5 — 7 mm. 

 long with 8-segmented antennae as described by Signoret. It is 

 much less convex than L. corni and is sometimes rather flattened 

 toward the margins. The 24 to 28 large conspicuous pores in a 

 submarginal row will also aid in identifying this species. 



It apparently has been recorded in the United States only from 

 California under the name of Lee. magnoliarum. 



^Coccus berberidis Schrank, Fauna Boica, II, Abt. 1 (1801) is not a Lecanium 

 at all, but the description surely refers to Mytilaspis pomorum. "Schinken- 

 niusehelformig. dunkel rothbraun, weislicht gerandet, am schmalern Ende 

 rostbraun." Freely translated is — Oystershell-shape, dark red brown, pale- 

 margined, rust-brown at the small end. Schrank also refers to the impure 

 white eggs occurring beneath the dead body of the female in April, which is 

 too early for such a record of a Lecanium in a temperate region. 



