416 Agricultural Gazette of N.S.'fi^. [.l/^/y 2, 1908. 



anil central 



Thcv app'.-iivd ill till' Ncv l^iinland disli-icts, in \\\<- lliintri- iti\('i' \ alley 

 almost til the sea, and in tlir soiitli as far rast as (^)ueanbeyaii ami 

 'i'nniliri iinilia. kv. ( )(|(l s|icL'inicns of Oi'daJi-UH sene(jalensis and C i/rtacanthacr is 

 ex'irlii wen- ()l)S('i'\cd aiiioni;' the suai'nis of (Imrhnci'toj^ ti'rnihvfira. 



Other Species of Australian Plague Grasshoppers. 



Tlu? "Smallir Plain Lociis<t" {Chorto-cetes p^isiUn, Walkei-) is abou' an in.-li 

 ill length from the head to the tip of the wings, l)i'own or yellowish in general 

 colour, without the distinct blotching on the forevvings and tips of the hind 

 wings, as in the " Larger Plain Locust " (C terniiiiifer>^), and dei-idedly 

 .snialli-i' than this latter species. During the suiinners from l.S'J!) to IDOL*, it 

 appeared in the western districts from Parkes and Condobolin south to the 

 Murray l{i\cr. (irass and eri)|)s were destroyed. Among otlici- nn'tliods 

 employed to destroy tin' hoppers, Mr. Froggatt used African fungus, but 

 without appreciable ri-sults. The mrious manner in which the males group 

 about the female as she is depositing eggs is well shown m the plate (I'cpi'o- 

 <luced) which appealed in a paper by Mr. Froggatt on this species. 



Eastern Plague Locust of New South Wales (Oedalus seneqalensis). 



Individuals of this species may be found each season throughout eastern 



New .South Wales, Imt in .March, \'M)~i, they 

 appeared in lai'i,'e swarms about tlu^ 

 Singleton districts, and were observed 

 depositing eggs in (piantity. Thev 

 were observed by Mr. Frogi.'att to be 

 attacked by a fly parasite ; also, a 

 parasitic fungus [Empusa [/ryUi, Fres.) 

 was reported destroying numbers of the 

 winged forms. Later a hymenopterous parasite was 

 bred from the eggs. They did not a|)j)ear in great 

 numbers this summer, ] 9()7-S, and it seems possible 

 this liea\y infestation with [larasites considerably 

 I'^duced their num^'crs. Their filace was taken at 

 Singleton, Maitland, Szc, by swarms of the Lai-ger Plain Locust {Chortoicetes 

 terniinifera), which, as previously mentioned, tl(>w eastward from further west 

 during Novemhei- and December, and deposited eggs from which young ones 

 were swarming in January. In this species the base of each hind wing is 

 yellowish, and there is a i>rown band across the centre ami at the tip. 



The Yellow-winged Grasshopper (Locusta (hmicn, Linn.). 



This species is found along the eastern districts of the State. In (^)ueensland 

 it sometimes appears in swarms, as a'so a larger species {Curtacanthacris 

 exncta), and does much damage to the sugar plantations, itc. Driving into 

 trenches or af;ainst cloth fencing' along the edge of the eanetields is resoi'ted 

 to, when they can be destroyed (sprayed, liuried, S:c.';. This species is larger 

 and of more robust build than the Plain Locusts {('/inrfoicetes f-/>/'-). ''^t^'^ 'uay 



Fig 4. 



Eastern Plague 



Locust 



{Ocildlciis 

 sencgaleniilx). 



