148 



FEED. V. THEOBALD. 



Alate viviparous female. — ^Head dull black, mealy ; secretion wHte or somewhat 

 bluish white, imparting to the head more of a bluish black than dead black colour ; 

 eyes black . Antennae smoky black ; second segment pale at base ; pale at the j oints . 

 Pronotum of an obscure apricot colour and farinose, with a dark farinose ring. Meso- 

 thorax dull black, slightly pohshed in some examples ; on account of the mealy 

 covering the black appears as a blue-black rather than true black. Abdomen of a 

 dull apricot colour and farinose, the mealiness being in zones, conforming more or 

 less with the segmentation of the abdomen ; junctures of segments not mealy or 

 only shghtly so ; the farinose matter very abundant and conspicuous at the apex 

 of the abdomen. Venter apricot and farinose, junctures of segments not mealy. 

 Underside of prothorax apricot. Sternal plates brown to black. Legs smoky or 

 smoky-black. Wings with dusky insertions ; costa dusky or very pale smoky ; 



Fig. 36. Gall of Pemphigus glohulosus, sp. n. 

 (b) opening of gall. (nat. size). 



cubitus dark ; stigma yellowish, with dark brown margin ; obhques ochreous. 

 Antennae about as long as the head and thorax, of six segments ; the basal one of 

 about the same size as the second ; the third the longest, with 7-9 annulations ; 

 the fourth about half the length of the third, with 3 annulations ; the fifth longer 

 than the fourth, with a very large apical sensorium, base of the segment striated ; 

 the sixth a httle shorter than the third, with a very small blunt nail and a large 

 sensorium at its base, the rest striated, with a few short hairs at the apex. Frons 

 rounded ; eyes very large ; median stemmata on a dark area. Proboscis short, 

 not reaching the second coxae ; apical segment a httle longer and narrower than the 

 penultimate. Cauda and anal plate rounded, the former small, with two hairs ; 

 the latter darkened at the apex, with many hairs. Cornicles small, flat, circular. 

 Legs normal ; tibiae with short hairs. Length, 2-2-5 mm. 



