44 



INSECTS AND VK(;|; TAIil.E I'AliASl IKS IN.Illtll lUS T(» CUOl'S 



dusky on tlic inside ; nut qiiitu as long as the l)ud}', coinposcil of (i sfgiuents, the two 

 btusal cues thick and short, the three following of nearly ecjual length, the apical one 



as long as the t^vo ])receding, anntilated 

 and notched near its base (Fig. 5). 

 Prouotuni green ; mesonotmn green 

 around the edges, bro^vn in the middle ; 

 nietanotuni greeuish-broAvn. Abdomen 

 dark green above, pale at the sides and 

 Ijelow, with two brown spots on the sides 

 of each segment. Cornicles (Fig. 1) 

 short, thick, almost uniformly cylindrical, 

 truncated, the sides slightly crenulated. 

 Legs greenish, tliin, of moderate length, 

 tibias especially hind jxiir Avith fine bristles 

 arising from minute papiUge, edges of 

 the tibiaj especially towards the apex 

 crenulated. Venation typical {vide figtire 

 13). 



Aphis sorghi or Asal fly. Winged viviparous female. 

 Posterior wings not shewn. 



Apterous invipnrou.'i female. 



Length of body TO to 1'5 mm. 



Lenijtii of antemue U'8 to I'O mm. 



Antenna? (Fig. 11) Avith four or five segments, the two basal ones normal, the 

 third long and with a constriction apicaUy making the quasi-fifth segment ; not quite 

 as long as the body. Head (Fig. 10) 

 showing the frontal lobes indistinctly, the 

 central one Avith a median groove and a 

 lateral cm'ved bristle on each side. Legs 

 short and thick, the hind tibia? Avith 

 prominent lateral bristles. Rostnun short 

 and thick reaching to nearly lialfAvay 

 betAveen the bases of the first and second 

 pairs of legs ; cornicles cylindrical, broA\'n. 

 Eyes black. 



Pupa. Tlie three cephalic processes 

 very small ; the antenna; ( Fig. 8) con- 

 siderably shoi'ter than the body, of fiA^e 

 segments the two basal ones as in the 

 Avinged female, the third rathei- long, the 

 fourth about half the length of the third, 

 the fifth as in Avinged viviparous female. Legs thick as in the apterous female, 

 the hind tibiae rather SAVollen apically and Avith jialc l)ristles; cornicles (Fig. 3) 

 as in the apterous female, rather shorter than in the Avinged female. Eyes black. 



Larva. Cornicles shorter and more cone-shaped with truncated cii-cular ajiex. 



.Aphis sorglii.'i Nearly mature apterou-s female. 



