PHYSIS (V, 1922) 



Morphological chorad ts : Oval fco convex, naked. Frontal lu- 

 bercles convergí ii»-. \nlennae without sensoria on 1 II . III pro\i<lr<l 

 with ver) shorl capitate hairs that are subequal in lenglh lo r/4 i Ls 

 greatesl breadth. Imbrication visible on all segments save I and II. 

 \nal píate distinctl) triangular withblunt apex. Cauda conical willi 

 aboul two pairs of lateral hairs. Rostrum reaches second coxae. 



Q. 



rm-r^.-i.j , ,, -■ „-, _, 



Fig. i4- — Neomyzus cireum/lexum (Bugkton) Aplerous virgogene : a, antenna ; 6, cornicle; c, cauda. 



Gornicles feebly imbrica ted with well dilated tip. Tarsi with very 

 feeble to obsolete imbrica tions. 



Relativo measurements : 



Lenglh i .98 



Width 1 . 00 



f. t. I II III IV V IV f. 



Antennae 0.06 o.i3 0.08 o. 52 o./Ji 0.33 0.16 0.68 



Cauda. 0.20 



Cornicles 0.^2 



Femora... 0.57 0.61 0.82 



Legs I Tibiac ... 0.99 1 .00 1.^2 



Tarsi. .... o. 10 o. 10 o. 1 1 



Rostrum. o. 5o 



Hab. On Vinca major, L., Lomas de Zamora (prov. Buenos Aires) 

 G. R. HuiDOBRO col. 



Obs. I liave not yet observed the álate virgogene of this species bul as 

 the apterous forms at hand agree perfectly in every detailwith Bickton's 

 and Van der Goot's descriplion I do not hesitate to place my specimens 

 under the above menlioned ñame. Baker in bis paper on the Gener.ic 

 classification of Ihc Hemipterous Family Aphididae, p. 5y, \()?.o, pla- 

 ces Neomyzus \ \\ der Goot as a synonym of Myzus Pass., bul on exa- 

 niiniíig ihe material I have at hand I lind sufficient reason for relaining 

 \ \n der ( ¡oot's gemís. 



