292 JOURXAL OF ECONOMIC ENTOMOLOGY [Vol. 10 



This species I have observed at Walnut Creek, Cahf., on the valley 

 oak {Qiiermis lobata Xee) from the spring of 1913 to 1916. The insect 

 is quite local and does not appear to spread appreciably, perhaps due 

 to the scarcity of alates. In California there is a species on alder 

 (Alniis rhomhijolia Nutt.) which apparently belongs to the same group 

 of aphides and of which 1 have thus far taken only the ovipara (Stan- 

 ford University, Nov., 1914, and Hopland, Sept., 1915). In color 

 and shape this resembles the oak species but it has a different arrange- 

 ment and structure of spines. 



Callipterinella annulata Koch. Figs. 16, 4 to 8. 



Chaitophorus annulatus Koch. Die Pflanzenlausen. 

 Chaitophorus betulce Buckton. Brit. Aphid. II. 



Chaitophorus betuloe (Buckton) Gillette. Journ. Econ. Ext., Aug., 1910. 

 Callipterinella annulata (Koch) Van der Goot. Zur Sj-stematik der Aphiden. 

 Tijd. voor Ent., 1913. 



Considerable doubt has arisen about the placing of tliis species and 

 in 1913 Van der Goot erected the new genus Callipterinella to contain 

 it and Callipterus hetidarins Kalt. This latter species I have never 

 seen but annulata has characters of Myzocallis of the Callipterini 

 (cornicles, antennal armature, etc.) and others of Thomasia of the 

 Chaitophorini (cauda, non-capitate hairs, length of antennge, etc.), 

 but it cannot rightly belong to either. Van der Goot has placed it in 

 the Callipterini which seems its right place, and whether or not his 

 scheme of genera be accepted in toto there can hardly be any doubt 

 concerning the validity of the genus CaUipferineUa, as far as the species 

 annulata is concerned. The synonym}^ of Buckton 's hetulcv is taken 

 from Van der Goot. 



According to Gillette (J. E. E., Aug. '10) this species has a wide dis- 

 tribution in America for it is reported by him from Portland, Lansing, 

 Albany, Geneva and Denver. In California it occurs together with 

 the European Euceraphis betula on imported Birch {Betula alba) in- 

 festing foliage and shoots. The prevailing color is reddish-brown. 



Apterous viviparous female (Fig. 16, 4). Reddish-brown: body clothed with 

 numerous long non-capitate hairs; many dark brown transverse bands and lateral 

 sub-circular and sub-quadrate areas occur on the dorsum: antennae basally light-col- 

 ored, apically dark brown, half as long as the body, clothed with short hairs; III with 

 4 to 5 oval sensoria in a row on the sUghtly swollen basal half: hairs on forehead 

 as long as antennal segments I and II combined: legs quite hairy; tarsi dusky, rest 

 concolorous with the body ground color: cornicles dark brown, sub-quadrate, .071 

 mm. long, .068 mm. wide at base: cauda hardly constricted basallj', rounded, dusky, 

 .070 mm. long: anal plate dusky, emarginate: beak stout and short, reaching anterior 

 margin of second coxse. Length of body 1.83 mm. Width of body (fifth abdominal 

 segment), .71 mm. Antennae; III .39 mm., IV .20 mm., V .17 mm., VI .10 mm., 

 filament .19 mm. 



