32 ON THE LIFE-HISTORIES OF AUSTRALIAN COLEOPTERA, 



elytra, and large pectinate antennre ; the female nearly twice the 

 size has simple antennae, head and thorax black blotched with 

 deep orange-red, the elytra much broader, of a deep orange-red. 



Sympiiyletes nigrovirens, Donovan, Epitom. Ins. N. Holl. 1805. 



Larva white to semitransparent ; with broad head and slender 

 segments slightly covered with short hairs ; mouth parts and jaws 

 black, head angular, widest at apex, smooth and shining, with an 

 irregular patch of shallow punctures in centre ; legs wanting ; 

 thoracic and abdominal segments narrow, of uniform thickness, 

 shining on top, all the segments except the first thoracic and the 

 last two abdominal ones with a transverse elongate oval rugose 

 patch in the centre on the upper side, on the under side the first 

 thoracic and the following segments with a double curved patch 

 in their centre. 



The larva attacks the upper branches of Acacia juni2:>erina, 

 in its earlier stages hollowing out the small twigs, but afterwards 

 feeding down into the main stems, it cuts them clean ofi" under 

 cover of the bark, when they tumble off; it plugs the hole in the 

 stem below with wood debris, and feeds downwards in a regular 

 straight chamber, at the bottom of which it pupates. It also 

 feeds in a similar manner upon the twigs of Acacia longifolia, 

 pupating at the extreme tip of the broken stem. 



The beetle is found in December and January feeding upon the 

 bark of the young shoots of Acacia longifolia. 



This is one of the smallest of the genus, its white face, legs, 

 and broad stripe of white on either edge of the elytron forming a 

 striking contrast to the deep green elytra and heart-shaped buff 

 patch between the shoulders. It is found in N. S. Wales and 

 Queensland. Best says that in Victoria it feeds upon the Black 

 Wattle. 



Symphyletes albocinctus, Guerin, Yoy. Coquille, 1830, p. 137, 



t. 7, f. 7. 



Larva dull white, long and slender, with regular rounded 



segments ; mouth parts ferruginous, jaws black, large and stout, 



head broad, smooth and shining, a transverse line near forehead 



