1918. | BASHAMBAR Das: The Aphididae of Lahore. 227 
the alate females return to young peaches that still have succulent leaves. These 
specimens either come from other peach trees or from Arundo, but mostly from the 
latter. ; | 
The alate females known as “return migrants’’ are considerably larger than the 
ordinary winged ones, and more so than those found on peaches early in the season. 
The wing expanse may be as much as 735 mm. The sensoria on the long antennae 
also number more. After once settling on the leaf the insects are not inclined to move. 
Below and on the lateral sides of their abdomen thick masses of waxy- secretion 
accumulate and have a silky appearance. The mass seems to be composed of acci- 
cular crystals. The quiescent insect, with a white mass below and on either side of 
the anal end, looks as if attacked by a fungus. The progeny of these are yellowish 
and soon develop into oviparous females. 
>”) 
These egg-bearing females begin to lay eggs near the buds about the end of 
December and continue doing so into January or even into February. ‘The males 
usually die in December. The eggs normally hatch in March. 
It would be of interest to know if some of the eggs laid in December or later 
remain dormant till September; the insects that cluster on peaches at this time look 
very much like “ stem-mothers’’ in their form and rate of reproduction. 
The parthenogenetic reproduction continues throughout winter and even up to 
March, on Phragmites; so that it is only a few of them that give birth to ““ males’’ 
and ‘‘ return migrants” that go back to peaches, the others remain behind. Sexual 
individuals have been collected so far only in December and January. 
Excretion of honey-dew is extremely abundant in this species; numerous ants, 
bees, wasps, flies, etc., flock to such infested plants. Predaceous insects and parasites 
are also numerous. The leaves of peaches, usually on the topmost branches, when 
attacked by this Aphid do not attain their normal size and colour, but remain small 
and greenish-yellow in colour. 
Brachyunguis, gen. nov. | 
Characters of the genus.—Body oval, small to medium sized, clothed with mealy 
pulverescence. é 
Head totally devoid of frontal tubercles. 
Antennae short, third article the longest ; the spur or ‘‘ unguis’’ of the sixth joint 
very small, about half as long asthe base. (The generic name refers to this character). 
Lateral tubercles present on the first and seventh abdominal segments. 
Cornicles small, almost cylindrical, half as wide as long. 
Cauda well developed, broad-based and long conical; about twice the length of 
the cornicles. 
Rudimentary gonapophyses three. 
Three species are found in Jahore belonging to this genus. All are apparently 
new to science, and accounts of them are given below. Among foreign Aphids none 
seem to have been recorded as possessing these characters. 
