158 FORFICULID.i:. 



Pygidium transverse. Forceps of 6 with the branches horizontal, 

 elongate, slender and arcuate. 



Range. India and Philippines. 



This genus is characterized by the depressed body, dilated elytra, 

 oval dilated abdomen ; the elytra have no costal keel. Two species 

 are known, both Oriental, one of which occurs in India. 



97. Pterygida circulata, Dohrn. (Pig. 96.) 



Forficula circulata, Lohrn, (Go) p. 95 ; Scudder, (76) p. 313. 



Aptervgida circulata, Bormans, (00^) p. 116. 



Pterygida circulata, Verhoeff, (02') p. 196 ; Klrhy, (04) p. 44. 



Stature medium, strongly flattened and dilated. Colour dark 

 chestnut ; elyti'a and wings yellowish. Antennae . . . ?, segments 

 dark brown. Head depressed, black, posterior margin truncate, 

 sutures obsolete, somewhat tumid between the eyes, with two 

 small impressions. Pronotum black, somewhat longer than broad, 

 slightly broader anteriorly than the head, anterior margin truncate, 

 posterior convex ; prozona somewhat tumid ; metazona flat. Pro- 

 sternum somewhat narrowed ; sternal plates smooth and black. 

 Elytra yellowish chestnut, ample and broad, with no keel, widened 

 at the shoulders and narrower posteriorly, quite smooth. Wings 

 ample ; the scale is of the same colour as the pronotum ; the 

 membranous portion is of a yellowish colour in the basal third, 

 with a very broad smoky blackish band occupying almost the 

 whole of the remainder, except the margin itself which is 

 lighter but smoky. Femora black; anterior pair rather thickened; 

 middle and posterior pair more slender and longer ; tibife and 

 tarsi slender, elongate, reddish brown. Abdomen flat and broad, 

 oval, reddish black ; finely granulate ; the sides of the segments 

 somewhat convex ; latei'al tubercles not very pronounced ; ventral 

 plates paler, reddish ; the penultimate segment ovate, with a 

 median fold at the posterior margin. Last dorsal segment very 

 short, transverse, rectangular, smooth, with a broad, very obtuse, 

 tumid, smooth shining tubercle at each side. Pygidium short, 

 transverse, obtuse, with a median sulcus, dividing into two very 

 obtuse lobes \\ hen viewed from above. Force])s with the branches 

 widely remote at the base, slender, unarmed, brownish red, 

 regularly bowed, enclosing a regular oval area. 



6 



Length of body 14-14'o mm. 



J, forceps 6 ,, 



NoRTiiERisr India {Brit. 2Ius., coll. Burr) ; Madras ( Vienna Mus.). 



Type in the Vienna Museum. 



This species is easy to recognize by the shape and by the 

 slender and arcuate forceps of the male. 



In the Oxford L^niversity Museum, there is a specimen with wings 

 expanded, and these have the scale of the same colour as the pro- 

 notum ; but the membranous portion is yellowish near the basp, 

 the rest occupied by a broad smoky black band, the apex itself 



