GLYPH1NA. 15 



Genus XXIX.— GLYPHINA, Koch* 

 Kerblaus. 



Rostrum shorter than in Thelaxes. 



Antennae liv^-jointed, nail-like process somewhat 

 long. Cornicles wart-like. Legs moderate, but very 

 short in the larvaa. 



Wings longer, narrower, and more pointed than in 

 Thelaxes. Upper wing with an unforked cubital vein, 

 which does not anastomose with the cubitus. Hind 

 wing with an oblique vein. Stigma long and knife- 

 shaped, f 



N.B. — The wing-veining, as in Thelaxes, is liable to 

 variation. In some specimens a very faint tendency to 

 show a forked cubitus may be traced. Koch describes 

 but one species, viz. G. betulce, which, though like the 

 following insect, cannot be identical with it. His 

 figure of Glyphina shows, as above, three simple 

 oblique veins, without any furcation; but Passerini 

 regards this character as abnormal, and not generic. 



" Alata prsebit cubitum haud furcatum, quod inter- 

 dum exceptione observatur."| I would suggest that 

 the " exception " is rather the rule. Such a character 

 of venation will also better accord with all other 

 Chermesinas. Under this tribe he places Vacuna, which 

 he considers identical with Thelaxes. 



Mr. Monell's new American genus Colopha has 

 much in common with Koch's Glyphina, but neverthe- 

 less the insects must be distinct. The cubital vein 

 only once forked, allies the insect (which some have 

 thought to be identical with Schizoneura compressa of 

 Koch) to Thelaxes ; but the strongly-ringed antennas, 



* From y\v<pavov, a surgeon's knife, a scalpel. 



t " Messer-formig," Koch, p. 259. 



X Passerini, ' Aphididae Italica?,' p. 83. 



