FORMICOXENUS. 83 



der Fliigel verbindet sich mit der Costa cubitalis nahe an der Theilungsstelle 

 der letzteren, wodurch nur eine geschlossene Cubitalzelle gebildet wird ; die 

 Costa recurrens schliesst eine Discoidalzelle ab." 



Formicoxenus nitidulus Nyl. 



Myrmica nitidula Nylander Acta. Soc. So. Fenn. 2 1058 (1846) 1 . Myrmica 

 laeviuscula Forster Hym. Stud. 1 54 (1850) 2 . Myrmica lucidula F. Smith 

 Ent. Ann. 1858 39 3 . Myrmica nitidula F. Smith Ent. Ann. 1858 40 4 : Proc. 

 Ent. Soc. Lond. (n.s.) 4 1857 89 (1858) 5 . Myrmica (Stenamma} westwoodii 

 F. Smith Trans. Ent. Soc. Lond. (n.s.) 4 1857 281 (1858) 6 : Cat. Brit. Foss. 

 Hym. 32 (1858) 7 . Stenamma (Myrmica') westwoodii F. Smith Ent. Ann. 

 1872 98 8 . Stenamma westwoodii Forel Denkschr. Schweiz. Ges. Naturw. 26 

 82 9 227 10 (1874). Stenamma westwoodii Saunders Trans. Ent. Soc. Lond. 

 1880 216 11 . Formicoxenus nitidulus Er. Andre Spec. Hym. Europe 2 273 

 (1881) 12 ; Saunders Ent. Mo. Mag. 20 16 (1883) 13 ; Adlerz Ofv. Kongl. 

 Vet-Akad Forh. 41 43-64 (1884) 14 ; Forel Ann. Soc. Ent. Belg. 30 135 (1886) 15 ; 

 Wasmann zusam. Nest, gemischt. Kolon. Ameiseii 35 (1891) 16 ; Dalla Torre 

 Cat. Hym. 7 62 (1893) 17 . Stenamma westwoodii Farren- White Ants' Ways 

 245 (1895) 18 ; Formicoxenus nitidulus Saunders Hym-Acul. 31 (1896) 19 ; 

 Janet Animaux Myr. 54-56 (1897) 20 ; Vic. Hist. Worcester. 1 89 (1901) 21 ; 

 Donisthorpe Ent. Rec. 14 15 (1902) 22 ; Vic. Hist. Warwick 1 73 (1904) 23 ; 

 Wasmann Arch. Trim. Inst. Grand-Ducal Luxemburg 1906 17 24 ; Donis- 

 thorpe Ent. Rec. 18 317 (1906) 25 ; Vic. Hist. Berks 1 76 (1906) 26 ; Bagnall 

 Ent. Mo. Mag. 42 140 27 210 28 (1906) ; Emery Deutsch. Ent. Zeitscher. 1908 

 551 29 ; Donisthorpe Trans. Leicester Lit-Phil. Soc. 12 226 (1908) 30 ; Arnold 

 Ent. Mo. Mag. 45 278 (1909) 31 ; Wheeler Ants 430-431 (1910) 32 ; Donis- 

 thorpe Ent. Rec. 25 62 (1913) 33 : Rep. Lancs.-Chesh. Ent. Soc. 36 1912 

 53 (1913) 34 . 





Fig. 58. Pedicel of Formicoxenus Fig. 59. Head and thorax of Formicoxenus 

 nitidulus Q. nitidulus $. 



^ Smooth and shining, reddish yellow, gaster reddish brown. Mandibles 

 meeting when closed. Post-petiole armed beneath with a small spine. Long. 

 2-8-3-4 mm. 



$ Very like the ^, a little larger, and darker in colour. Eyes larger ; ocelli 

 present. Post-petiole as in the ^. Long. 3-4-3-6 mm. 



cJ Very like the ^. Mandibles short, unarmed, not meeting when closed ; 

 eyes larger ; ocelli always present ; antennal funiculi more curved. Post- 

 petiole as in ^ ; gaster with one more segment. Long. 2-8-3 mm. 





