REPORT OF THE STATE ENTOMOLOGIST 1908 21 
quadrangular, fuscous area on the dorsum of the fourth, fifth, 
sixth and seventh segments. Cornicles fuscous and tapering 
slightly. Wings with a yellowish white stigma. Legs mostly a pale 

Fic. 7 Gladioli aphid, wings and antenna, much enlarged. (Original!) 
yellowish, the femora and tibiae apically and the tarsi fuscous. 
Venter of prothorax yellowish, the mesothorax with broad, angu- 
late, fuscous sclerites ventrally. The abdo- 
men ventrally yellowish and deep orange, 
the two apical segments narrowly margined 
mesially with fuscous. The antennal seg- 
ments have the following measurements: 
The third .36 mm, the fourth .165 mm, the 
fifth .105 mm and the sixth .375 mm, the 
sensoria being very abundant on the third 

urth segments; rnicl : ee. Fic. 8 ladioli aphid, 
and fou 1 segments; cornicles .15 x .045 Sa dag oh et 
mm, tapering gradually. (Original) 
Life history. Gladioli bulbs are kept by growers in large 
warehouses, the temperature being maintained at about 40 degrees 
throughout the winter. This insect is evidently unable to breed 
under these conditions. As spring advances and the house begins 
to warm up in March, the aphids appear in large numbers, repro- 
ducing so abundantly that the window frames and sills may 
become literally covered with wings and bodies of plant lice. It 
“is comparatively easy, in a badly infested house, to sweep up a 
gill of wings and exuviae from under one window. This plant 
louse multiplies freely upon the bulbs, usually being massed around 
the origin of the roots and sometimes nearly covering the entire 
