366 Bulletin de la Société Royale Entomologique d'Egypte 
Palpi long in the male (the last two palpal joints 
not formed into a club) and very short in the 
female. Sides of the meso notimi not marked as 
above ... 8 
8. Mesonotum with conspicuous white or silvery 
longitudinal markings . 9 
Mesonotum without any such markings .... 11 
9. Mesonotum with three narrow longitudinal white 
stripes. Large species, with four or five dark 
spots on the wings caused by the agglomera¬ 
tion of scales . 
Theobaldia (Allmheob oidio) longiar colata, Maoq. 
Mesonotum differently marked . 10 
10. Mesonotum dark with a silvery lyre-shaped mark. 
Species with the thorax legs and abdomen 
conspicuously marked in black and silver .... 
........ Aedes (. Stegomyia ) argenleus, Poi ret. 
Mesonotum bright orange or chestnut brown, 
with a pair of parallel white stripes. 
. Aedes ( Ochlerotatus ) caspius, Pall. 
11. W ings with broad scales, some dark and some 
pale. Femora and tibiae also speckled with light 
and dark scales .. 
•. Aedes (O chier otatiis) detritus , Hal. 
M ings with narrower scales which are all uni- 
colorous . (Culex) 12 
12. birst joint of the hind tarsi distinctly shorter than 
t/ 
the tibiae. Small dark species with triangular 
pale patches at the basal corners of the abdo¬ 
minal tergites .. 
