

 



%\\t Canadian JjIiitomolnnM 



Vol. XXXIV. LONDON, JANUARY, 1902. No. 1 



THE CANADIAN SPECIES OF TRIMEROTROPIS. 



BY E. M. WALKER, B. A., TORONTO. 



As only three specimens of Trimerotropis, Stal, have been reported 

 from Canada, and as the writer has taken several others, of which three 

 seem to be undescribed, the present paper may be of some value as a 

 preliminary notice of the Canadian species of this genus. 



The following table will serve to distinguish the species of Trimero- 

 tropis known to occur in Canada. It is artificial, but as the species 

 enumerated are few, the table will perhaps be of greater service than 

 would a more natural one. In the notes following the table the species 

 are arranged according to McNeill's recent " Revision of the Orthopteran 

 Genus Trimerotropis," the new species being placed according to their 

 nearest affinities. 



Key to the Canadian Species of Trimerotropis. 

 A 1 Hind tibite red, tegmina crossed by bands which may be conspicuous 

 or faint on account of the slight contrast between them and the 

 ground colour. 



a 1 Disk of the metazone of the pronotum plainly lighter than the 

 prozone. Bands of tegmina distinct, but formed by the segre- 

 gation of numerous small spots 3. tnonticola, Sauss. 



a 2 Disk of the metazone not distinctly lighter than the prozone. 



b 1 Bands of the tegmina conspicuous, solid, and not 

 formed by a segregation of small spots ; process of the 



metazone acute 4. Bruneri, McNeill. 



b 2 Bands of the tegmina inconspicuous, and made up of 

 fuscous annuli ; process of metazone 



obtuse 5. citrina, Scudd. 



A 2 Hind tibiae never red. 



a 1 Hind tibiae blue. Bands of tegmina conspicuous, but made 

 up of fuscous spots. Fuscous band of the wing very 

 narrow 2. ? aeru/eipes, Scudd. 



