[86 



PHYSIS (V, 1922) 



Morphologieal characters : Elongated pyriform. üorsum provi- 

 ded \\¡lli transverse rows of blackish hairs that arise from sniall 

 darkened tubercles which usuall \ lie in small fuscous spots. Ven- 

 ter provided also with piliferous tubercles, but they are finer and 

 paler, and aot encompassed l>\ fuscous spots, \nlennae with the 

 liisl lince segments and basa] half oí fourth, with smooth tegu- 

 lueul; remainiug segments wilh imbrications, faint on distal half ol" 

 IV, but more pronounced on V, VI' and íilament, Cornicles with 

 distincl polygonal recticulations on apical i//¡ ; tip very slightíh 



Fig. 1. — Macrosiphum lizerianum, Blanchahd. Apterous virgogene : a, an- 

 tenna ; b, scgmcnt III of antenna ; c, cornicle ; d, tip of corniclc; e, 

 cauda. Álate virgogene : f, canda; g, antenna; h, scgment III of antenna; 

 i, cornicle; j, tip of cornicle. 



flanged. Cauda rather acute to lanceolate with from íive to seven 

 pairs of lateral bristles. Anal píate sub-quadrangular. Tarsi distinc- 

 tly imbricated. Rostrum attains 3rd. coxae. 



Relative measurements : 



Lengtli 3.0 



Width i.3 



t'. t. I II III IV V VI f. 



Antennae o. 10 0.17 o. 10 0.90 0.70 0.60 0.16 1.00 



Cauda. 0.60 



Cornicles 0.80 



I»« 2"' 1 3" 1 



Fcinora. . . 0.90 0.90 1.10 



Legs ] Tibiae ... i.5a 1.62 2.3o 



Tarsi. .... 0.12 o.i3 o.i4 



líostrum. 0.82 



