INSECTS OF EUCALYPTUS. 97 



EUCALYPTUS; GUM. 



(Eucalyptus spp.) 

 Valuable Australian trees recently introduced into (California. 



A. BETTER KNOWN EUCALYPTUS INSECTS LIKELY TO BE IMPORTED. 



Mlctls protana Fabricius. 



(Gum-tree Bug. Coreidae; Hemiptera.") 



Hosts: Eucalyptus viminalis, Acacia decurrens, A. mollissivia, orange, other citrus 

 fruits. 



Injury: Sucks the juices from tender twigs, causing death of the new parts. 



Description: A large brown bug about an inch long, with long sucking proboscifl, 

 with acute teeth at posterior corners of thorax. Greatly resembles Leptoglossus. 

 The immature stages are soft and marked with yellow. 



Distribution: Australia. 



Fkenoh. C. Handbook of Destructive Insects of Victoria, pt. 4, 1909, pp. G8-71, 



pi. 70. 



Stigmodera beros Gebin. 



V (She-Oak Root Borer. Buprestidse; Coleoptera.) 



Hosts: She-oak and Bull-oak (Casuarina); also Eucalyptus. Adults fre luent 

 flowers of Melaleura, etc. 



Injury: Tunnels in the lower portions of the trunk of trees. 



Description and biology: Beetles large yellowish brown with dark blackish legs. 

 Larvae large yellowi?h white with powerful jaws. The eggs are laid in areas cleared 

 by the female in the butts of the trees. The larvae bore in and down through the 

 wood for several feet. 



Distribution: Australia. 

 French, C. Handbook of Destructive Insects of Victoria, pt. 5, 1911. pp. 114-116, 



pi. 121. 



Phoracantha trlcuspis Newman; Pboracantha recupva Newman. 



(Yellow-box Borers. Cerambycidse; Coleoptera.) 



Hosts: Eucalyptus viminalis. 



Injury : Very destructive borers. 



Description: Beetles light brown with darker markings on the elytra. The head 

 and thorax are very dark brown. Pupae yellowish white. Larvse bore in the wood. 

 Eggs are deposited in crevices in the bark. 



Distribution: Victoria. 

 French, ('. Handbook of Destructive Insects of Victoria, pt. 5, 1911, pp. 70-73, 



pi. 112. 



Dlstichocera macleayi Newman. 



(Feathery-horned Yellow-box Borer. Cerambycidse; Coleoptera.) 



Hosts: Eucalyptus stuartiana, E. viminalis. 



Injury: Bores in the wood. 



Description: Female beetle reddish brown in color, larger than the male, which is 

 black with beautiful featherlike antennae. Pupa yellowish white. Larva dull, 

 yellowish white, unusually tapering at apex. The adults frequent the flowers of the 

 Leptospermum bashes. 



Distribution: Australia. 

 French, C. Handbook of Destructive Insects of Victoria, pt. 5, 1911, pp. 9fi-98, 



pi. 107. 



27812—18 7 



