254 



PSYCHE. 



[June 1S95. 



TWO NEW WESTERN COCCIDAE. 



BY T. D. A. COCKERELL, AGRIC. EXP. STATION. I.AS CRUCES, NEW MEXICO. 



One day last November, when rid- 

 ing home from the College, I noticed, 

 'about a hundred yards from the road, 

 a clump of Lycium-bush, turning yel- 

 low from the approach of winter. 

 Although inost of the wild shrubs of 

 the neighborhood had yielded their 

 peculiar species of scale-insects (Coc- 

 cidae), I had never been able to find 

 any on the Lycium. Just at this 

 moment, however, I was so impressed 

 with the feeling that there ought to be 

 a species on Lycium, that I got down, 

 tied my horse to a post, and went to 

 examine the above-mentioned clump. 

 As I had hoped, in the middle of the 

 clump, swarming on the stems and 

 twigs, was a very interesting new.' 

 species, which I now describe. 



LiCHTENSIA LYCII, Sp. nov. 



$ sc.iles numerous on the twigs and 

 stems, more or less gregarious. 



$ reddish-brown, transversely wrinkled; 

 nearly covered by tlie white convex ovisac, 

 which is not woolly but leathery in con- 

 sistency, not ribbed, slightly shiny, appear- 

 ing as if made up of small roundish plates. 



$ with ovisac 7 mm. long, 4.^ high, or in 

 many individuals somewhat smaller. 



Eggs pale'orange. Larva brownish. 



$ scale about 2 mm. long, narrow, white, 

 semitransparent, granulose, of the ordinary 

 form seen in the Lecaniinae. When imma- 

 ture it is dark brown and subcarinate. 



The above characters can all be seen 



On boiling the insects in caustic potash 

 the following additional points are dis- 

 cerned by the aid of a microscope. 



$ after being boiled colorless, flattened 

 under a cover-glass it ineasures 44 mm. 

 long, 4 mm. wide. 



Antennae S-jointed, 3 longest and about 

 as long as 4-1-5. 5 a little longer than 4. 

 4 about as long as S, or slightly longer. 

 8 as long as 2, or slightly longer. 6 a little 

 longer than 7. Formula* 354 (821) 67. 

 Joint 2 with a conspicuously long hair; 

 joint 5 with a rather long hair. Legs well" 

 developed and fairly large; tarsus, exclu- 

 sive of claw, about as long as or slightly 

 longer than third joint of antenna. Coxa 

 with two hairs. Trochanter with two hairs, 

 one much longer than the other. Femur 

 very little longer than tibia, tibia consider- 

 ably longer than tarsus. Femur with one, 

 and tibia with two weak bristles on the 

 inner side. Claw almost straight, fairly 

 stout, the usual digitules well-developed. 



with 



slender though not filiform; digitules of 

 claw extending considerably beyond its tip, 

 but tarsal digitules extending beyond those 

 of claw. All four digitules well-knobbed. 

 Rostral loop very short. Margin with 

 rather small, stout, blunt (almost truncate) 



* The antennal formula is constructed by enumerating 

 the joints in the order of their lengths, beginning with the 



hand-lens without preparation. longest, and bracketing together those of equal length 



