PHILANTHUS TRIANGULUM. 187 



1. Philanthus triangulum. 



P. niger ; capite thoraceque flavo-pictis ; abdomine flavo, seg- 

 mentis macula clorsali triangulari nigra ; alis flavo-hyalinis. 



Vespa triangulum, Fair. Syst. Ent. 372.49 $ ,& Cab. Mus. Bom. 

 Banks. 



Villers, Entom. iii. 276. 25. 



Christ. Hym. p. 136. 



Oliv. Encycl. Meth. vi. 693. 116. 

 Vespa limbata, Oliv. Encycl. Meth. vi. 693. 118. 

 Crabro androgynus, Rossi, Faun. Etrus. Mant. i. 138. 305. 

 Philanthus pictus, Panz. Faun. Germ. 43. 23 $ . 



Fabr. Syst. Piez. 362. 

 Philanthus apivorus, Latr. Fourm. 317. 1. 12. f. 2. 



Spin. Ins. Liy. i. 95. 1. 

 Philanthus discolor, Panz. Faun. Germ. 63. 18 <J . 

 Philanthus triangulum, Fabr. Ent. Syst. ii. 289. 2; Syst. Piez. 

 302. 4. 



Bumeril. Consid. t. 59. f. 6, 7. 



Vand. Bind. Obs. ii. 122.2. 



Shuck. Foss. Hym. 246. 1. 



Bahlb. Hym.Europ. i. 187. 115. 



St. Farg. Hym. iii. 342. 



Wesm. Hym. Foss. Belg. 105. 6. 

 Simblephilus diadema, Jurine, Hym. t. 10. gen. 18 ? . 

 Philanthus androgynus, Curtis, Brit. Ent. vi. t. 273 ? . 



Female. Length 6^—71 lines. — Head and thorax black and 

 shining; the head very closely punctured, the disk of the 

 thorax much more distantly so ; the face, clypeus, and a bifur- 

 cate spot above, yellowish white ; the mandibles ferruginous, 

 with their tips nigro-piceous ; the flagellum obscurely fulvous 

 beneath, with the apical joint brightly so; the head fulvous 

 behind. Thorax : the collar, a spot on the tubercles and on 

 the tegulae in front, and the post-scutelluin, yellowish white ; 

 the wings fulvo-hyaline, the nervures ferruginous ; the legs 

 yellow, with the coxae, trochanters, and base of the femora 

 black ; the anterior tarsi strongly ciliated outside, and all the 

 tibiae spinose. Abdomen yellow, the extreme base of the seg- 

 ments and a triangular spot in the centre of each, black, the 

 spots decreasing in size from the basal one. 



Male. Length 4-6\ lines. — It differs in having the spot above 

 the clypeus trifurcate ; it has also a yellow stripe behind the 

 eyes ; the legs are of a pale yellow ; the abdomen black, with 

 a yellow band on the segments, which is very much attenuated 

 in the middle, the two apical segments yellow. 



Var. a. With a large yellow spot on the scutellum and a yellow 



