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ORDER IV (HYMENOPTERA). 
(Which include Bees, Ants, Wasps.) 
Family Tenthredinidse (Sawflies). 
The repulsive larvae of Perga dorsalis Leach, sometimes called the Gum 
Saw-fly, wriggling and squirming in masses, are well known to every person in the bush. 
They squirt a dark-coloured liquid at you, and soon strip a Eucalyptus sapling of its 
leaves. See " French's " Handbook of the Destructive Insects of Victoria," Part III, 
Plate LII. Mr. Froggatt has a note on the life-history of Perga in Proc. Linn. Soc. 
N.S.W., xv, 283 (1890). He states that he has not found them on any plants other 
than Eucalypts. The Steel-blue Saw-fly, P. dorsalis, he found on E. obtusiflora at 
Sydney, P. latreillei and P.foersteri on E. corymbosa at Sydney. 
Phylacteophaga eucalypti is the subject of " A new genus and species of Saw-fly," 
see W. W. Froggatt, Proc. Linn. Soc. N.8.W., xxiv, 130 (1899), with a plate. The 
larvae feed on the foliage of E. globulus. 
Family Cynipidae (Gall-flies). 
' The gall wasps belonging to the genus Cynips are responsible for most of the 
galls of commerce, chiefly produced upon the leaves or branchlets of many different 
oaks (Quercus. J.H.M.). . . . These little creatures are well represented in Aus- 
tralia, being most plentiful upon Acacia and Eucalyptus trees, yet very little attention 
has been paid to this group by our Entomologists, and there is a rich field to work at . . ." 
(Froggatt in Agric. Gaz. N.S.W., ix, 388, 1898). 
Family Chalcididse (Parasitic Wasps). 
Following are some Eucalypts which I have submitted to Mr. Froggatt, and 
which he informs me have been attacked by various indeterminate Chalcid wasps : 
'I.E. capitellata Sm. (Stringybark). 
Galls on branchlets. Ourimbah State Forest, near Gosford (W. A. W. de 
Beuzeville). 
2. E. hemiphloia F.v.M. (Grey Box.) 
A specimen collected by Backhouse on the Upper Hunter, N.S.W., No. 9 (Herb. 
Kew) has the buds so swollen by the punctures of an insect that the specimen presents 
an appearance so peculiar that it has been referred doubtfully to E. dumosa. It, 
however, belongs to E. hemiphloia F.v.M., and this swelling of the calyx is not 
uncommon in the genus. 
3. E. maculata Hook. (Spotted Gum.) 
The larvae of some microscopic Chalcid wasp have attacked the leaves, forming 
dots, both at Casino, Richmond River (G. E. Rummery), and at Theresa Park to 
Werombi, Camden district (J.H.M.). 
