570 MONOGEAPH OF THE AUSTRALIAN CICADID.E, 



1885. CyclocMla australasire, McCoy, Prod. Zool. Vic. i. p. 57, 



pi. 50, £. i. 

 1887. Green Cicada, Lucas, Proc. Ro}^ Soc. Vic. p. 173, pi. 1. 

 1895. Cyclochila australasue, Frogg., Proc. Linn. Soc. N.S.W. 



p. 528. 

 1903. Cyclochila australasicE, Frogg., Agr. Gaz. N.S.W., p. 337, 



pi. 4, fig. 1; reprinted as Misc. Pub. No. 643, p. 4, pi. 1. 



Head yellow or green, a black spot including the region of 

 ocelli, black, the ocelli bright red. Pronotum, mesonotum, and 

 abdomen yellow or green. Below yellow or green, the abdomen 

 shining yellow. Tegmina vitreous, all veins with costa green, a 

 pale yellow stripe along posterior border of clavus. Legs yellow 

 or green, tibiae and tarsi infuscated. Long. corp. ^ 50 mm.; 9 

 40mm.; exp. teg. ^ 120mm.; ^ 100mm. Size variable. 



Hah. — New Holland (Donovan); Sydne}^ Newcastle, N.S.W. ; 

 Melbourne, Vic; Southern Queensland. 



A variety, for which we propose the i\d,n\e spy- eta, is occasionally 

 found. Its differential characters are quite constant, and doubt- 

 less it will prove to be a distinct species. Besides the black spot on 

 the vertex there is a transverse black band across the front of 

 the vertex reaching inner border of each 63^6; a central longitu- 

 dinal black stripe on pronotum, extending from apex to the inner 

 edge of posterior border. Abdomen black, some small yellow 

 spots on lateral borders; apical border of first segment very 

 sinuous; underneath, basal segment and a large portion of disc 

 black; tibiae dark red; rostrum reaching middle coxae. 



This is our common Green Cicada popularly known as the 

 "Green Monday," while the less common yellow variety is known 

 as the "Yellow Monday." It is very abundant in early summer 

 in the suburban gardens, in the larval state feeding upon the roots 

 of all the larger trees, appearing in Sydnej^ at the end of October 

 and remaining until the end of Januar}^ The male droops his 

 wings down the sides of the abdomen and raises the tip of the 

 body when drumming. Though hundreds have been under 

 observation we have never seen one attempt to feed. 



