FORMICA RUFA. 



with one marginal, two subinarginal, and one discoidal cell. 

 The scale of the petiole flattened, forming a semicircular plate, 

 varying in form. The pupae enclosed in silken cocoons. 



SUBDIVISION 1. Males only slightly smaller than the females. 



1. Formica rufa. 



Fcemina. Rufo-ferruginea ; fronte cum occipite, mesothorace 

 supra, scutello, post-scutello, et abdomine supra fusco-nigris ; 

 clypei medio, palpis, antennis, mesothorace, tibiis tarsisque 

 fuscescentibus ; area frontali nitida ; squama lata, subtriangu- 

 lariter fere rotundata, margine supero insequali; alis fusco- 

 hyalinis, apicis subhyalinis. 



Operaria. Testaceo- vel rufo-ferruginea, nuda, Isevissime cine- 

 reo-micans ; fronte cum occipite et abdomine fusco-nigris ; 

 tibiis tarsisque fuscescentibus ; squama, abdominis basi et ano 

 rufo-maculatis. 



Mas. Nigro-fuscus, opacus, sparse pubescens ; pedibus rufes- 

 centibus ; area frontali nitida ; squama subquadrata, humili, 

 crassa, supra vix vel parum concaviuscula ; valvula ventrali 

 pilosula, saepe rufescente. 



Formica rufa, Linn. Faun. Suec. no. 1721 ; Syst. Nat. i. 962. 3. 



Fabr. Syst. Ent. 391. 4 ; Ent. Syst. ii. 351. 8 ; Syst. Piez. 398. 

 11. 



SchranJc, Ins. Austr. no. 834. 



Rossi, Faun. Etrusc. ii. 113. 836. 



Don. Brit. Ins. xiv. 76. pi. 496 ? . 



Olio. Enc. Me'th. vi. 493. 14. 



Latr. Hist. Nat. Fourm. p. 143, pi. 5. f. 28 <J ? $ . 



St. Farg. Hym. i. 201. 3. 



Curtis, Brit. Ent. xvi. t. 752 < $ 



Zett. Ins. Lapp. 449. 5. 



BruUe, Exped. Sc. de Moree, iii. 327. 727. 



Ratz. Forst. Ins. iii. 34. 1. 1. 4. f. 10. 



Nyl. Adno. Mon. Form. Bor. 902. 5 ; Form. Fr. et d'Alger. 

 60. 14. 



Foerst. Hym. Stud. Form. p. 13. 3. 



Schenck, Beschr. Nass. Ameis. 25. 



Smith, Brit. Form. Trans. Ent. Soc. Lond. iii. n.s. 100. 1 ; 

 Cat. Form. p. 2. 



Mayr. Form. Austr. p. 56. 9 ; Ungar. Ameis. 9. 9. 

 Formica dorsata, Panz. Faun. Germ. 54. 1 $ . 

 Formica obsoleta, Zett. Ins. Lapp. 449. 5 $ . 



