STATES OF INSECTS. (mago.) 305 
In a moth called the ghost (Hepzolus Humul), the 
posterior tibia of the male is densely bearded, but not 
of the female *.—Some Hymenoptera, as Ammophila and 
Stigmus, have the upper lip of the male clothed with sil- 
ver pile, while that of the female is not so ornamented. 
The legs of some bees are distinguished in the sexes by 
a difference in their clothing. That observable in those 
of the hive-bee has been before noticed®. In Andrena‘ 
the posterior tibia of the female is covered externally 
with a dense brush of hairs, for collecting the pollen ; 
and the posterior legs at their base have a curled lock of 
hair—which are not to be found in the male 4. In Dasy- 
poda, Melecta, Anthophora, Centris, Epicharis, &c. of 
the same author, the first joint of the tarsus of the fe- 
male, and in Xylocopa almost the whole tarsus, is also 
similarly signalized from that of the other sex. In 
Bombus, as in the hive-bee, the posterior tibize of the fe- 
males and neuters are furnished with a basket of hairs 
for carrying their pollen paste, which you will in vain 
look for in the male®. The latter, however, in some 
species of this tribe are distinguished from the former by 
the longer hairs of their legs, but not in the posterior 
ones. ‘Thus, in Anthophora retusa the first joints of the 
intermediate tarsus are bearded internally with a thin 
fringe of long hairs, and the first externally with a tri- 
angular one of short ones at the apex: but what is most 
remarkable, the last or unguicular joint, which in al- 
most every other bee is naked, is on both sides fringed 
* De Geer i. ¢. vii. f. 11. 
» See above, Vor. II. 123. Note». 
° Melitta ** c. Kirby Mon. Ap. Angl. i. 140. 
4 Ibid. t. iv. f. 10. a, b. f. 14. © Tid, t. xiii. f. 20. a, 
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