Il6 AN IXTRODL'CTIOX TO EA ^GY. 



named the Bn>ad-winged Katydid; it occurs throughout the Central 

 and Fastern A chicly allied . ( \ ftrspicillatHs, occurs 



in the South. These differ from other Katydids in having the 



r than the tegmina, and in having the tegmina very ( 

 that the insects have an inflated appearance, instead of a 



narrow, compressed tonn. .is is usually, the case. The Southern spc- 



:ter tegmina, more robust legs, and the musical app 

 the male is slightly broader than in the Northern form. 



6. Amblycdrypha. \Yc have at least four species that pertain to 

 this genus. The Round-winged Katydid, A. rotuiiiiijvlni, is \ 

 common throughout the Northern States and Canada. It 

 small species; the length of the body is 20 mm. >o.S inch', and of 

 the tegmina 25 mm. (I inch). The tegmina are wide for their 

 length, as indicated by the specific name. The ovipositor is quite 



id. much curved, and roughly serrated. The Oblong-win 

 Katydid. A. oblongifolia, occurs in the same region as the preceding 

 . it is larger, has longer tegmina, and the ovipositor is less 

 ate and less curved.* The Tailed Katydid, A. ctiHtfa/i?, occurs 

 in the South ; it is still larger than the preceding, and has a \ 

 long ovipositor. The length of the body is 25 mm. i I inch), of the 

 tegmina 37 mm. (1.5 inchest, and of the ovipositor 20 mm. (o.S inch). 

 Uhler's Katydid, A. Uhlcrii, is our smallest species; it is common 

 in Man-land and about Washington. 



7. Microctntrum. The Angular-winged Katydid, Microcintrum 

 rctinfrrisi is the commonest species in the Western and Southern 



pccially abundant in Florida, where it often injures 

 the foliage of young orange-trees. Its eggs, which are deposited in 

 or two rows upon twigs or the margin of leaves, frequently 

 attract attention on account of their large si/e and the remarkable 

 regularity of their arrangement. These are shown natural si/e on 

 Plate III. The adult female and several nymphs are represented at 

 the same place. Frequently tin : this species are infested by 



a Chalcid parasite, I'.upclnuis miriibilis, which is represented en- 

 larged on the same plate (2, fein.de; 2d, male). There is a closely 

 allied Katydid, J/. nffilitituw, occurring throughout the Fastern 

 United States, which is larger, and which differs in that tin- slightly 

 hollowed front of the prothorax has a very .small central tooth. 

 Th ' iian the preceding. 



* Fig. 75 of Harris's " Insects Injurious to Vegetation" is of A, totundifolia, and not 

 of this spc iiruted in the text. 



