الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 81 |  |  |
| | | from | 81 | | |
Abstract
- 66 -
SUMMARYANDCONCLUSION
This work was done to study the ecology and the
biology of an important species of pollinators Eucera
nigrila.bris Lep. Pam Anthophoridae in Mahmoudf.a village,
Sharkiya Governorate durine the years 1979, 1980
and 1981.
a) Ecological studies: ------------------
This species has one generation in the year. Kales
begin to appear first from the nests in the middle of
December, then it was followed by females after one week.
Mating is the first process which took place after the
appearance of insects during the last week of December
and the first week of January.
The females were observed to look for sites free
from plants to avoid their roots when they build their
new nests. The new generation of adults usually nested
beside their parent nests. To build the nest the bee
excavated the Boil using its mandibles for carrying the
big granules and the rest of the tumulus was removed by
its hind legs and the posterior end of its abdomen.
The entrance of the nest was always kept open,
ex~pt if it WaB blocked by external factors. The tumulus
-~ .._----
- 67 -
remains for a time differs according to the effect of
the surrounding environmental factors.
The nest consisted of the main tunnel without any
branches and it ended with 3-4 cells in vertical position.
The average depth of the nest was about 30-40 emand
the maximumwas about 45 cm, , while the minimumwas
about 25 em· ~he depth of the tunnel could be divided
into two parts; the entering tunnel (about 5 cm; ) and
the descending one (about 30 em.). The tunnel diameter
was about 8 mm~ The cell was elongated (about 15 nun.·
in length and 10 mm. in width).. The cell neck was
about 3 mm. in length. The bee covered the cell by
the p-articles of the soil.
In one nest usually live- one female. In some
cases, however, more than one with a maximumof 4
occupied the same nest.. At the first time of leaving
the nest to start its daily activity, an orientation
flight was usually made. The female usually carries a
compact pollen load molsted with nectar~
The bee remained in iota nest ~en 1t was ra;lning.
- 68 -’
The female deposited the cyl~ndrical curved egg
on the middle of the provision’s surf ace, it was attached
to the surface of the provision by both ends which
were stightly embeded into it. After complete hatching
the larva laid on 1ts lateral side on the provision.
After the larva had finished its food it voided its
feces and began to spin its cocoon of two layers. After
finishing spinning, the larvae inside its cocoon leaned
on the cell wall with its back stickine to it. The
larva inside its cocoon passed the summer season in a
quiescent stage’ as a post defecating larva. or prepupa,
then transferred into pupa.
The analysis of soil in which Eucera nigrilabris
Lep. nested showed that it was composed of clay loam,
saline and moisture soil .
.._---_.~._- --------_._--