FORMICA. 315 



(1908) 26 [in part]. Formica rufibarbis var. fusco-rufibarbis Donisthorpe 

 Trans. Leicester Lit-Phil. Soc. 12 223-224 (1908) 27 : Ent. Rec. 20 281 

 (1908) 28 : 21 287 (1909) 29 . Formica fusca fusca var. glebaria Emery Deutsch. 

 Ent. Zeitschr. 1909 196-198 30 . Formica rufibarbis var. fusco-rufibarbis 

 Donisthorpe Trans. Ent. Soc. Lond. 1910 145 31 . Formica fusca glebaria 

 Emery Deutsch. Ent. Nat. Bibliot. 2 4-5 (191 1) 32 . Formica rufibarbis 

 var. fusco-rufibarbis Donisthorpe Ent. Rec. 23 62 (191 1) 33 . Formica fusca 

 var. glebaria Crawley Ent. Rec. 23 96 (191 1) 34 ; Donisthorpe Entom. 44 

 390-391 (191 1) 35 . Formica fusca var. fusco-rufibarbis Donisthorpe Entom. 

 44 390-391 (191 1) 36 . Formica fusca fusca subsp. glebaria Emery Deutsch. 

 Ent. Zeitschr. 1912 672 37 . Formica fusca var. fusco-rufibarbis Donisthorpe. 

 Ent. Rec. 24 7 37 (1912) 38 ; 25 66 269 (1913) 39 . Formica fusca var. glebaria 

 Donisthorpe Ent. Rec. 25 66 (1913) 40 ; Crawley and Donisthorpe Int. 

 Ent. Cong. Oxford 1912 2 32 (1913) 41 . Formica fusca var. fusco-rufibarbis 

 Crawley and Donisthorpe Int. Ent. Cong. Oxford 1912 2 32 (1913) 42 . For- 

 mica fusca fusca var. glebaria Wheeler Bull. Mus. Compar. Zool 53 497 (1913) 43 . 

 Formica fusca var. fusco-rufibarbis Donisthorpe Ent. Rec. 26 41 (1914) 44 . 



Schenck [Jahrb. Ver. Naturk. Nassau 8 43 (1852)] and Dalla 

 Torre [Cat. Hym. 7 197 (1893)] incorrectly cite Formica glebaria 

 Nyl. as a synonym of F. fusca L. 



Q Blackish brown, with cheeks anteriorly, mandibles, scapes, base offuniculi, 

 sutures of thorax, base of scale and legs brownish red. 



In size and structure like fusca, but besides not being black like the latter, 

 the pubescence is longer and closer, especially on the gaster, which gives 

 the insect a silky appearance. Thorax without outstanding hairs. Long. 

 4-5-7-5 mm. 



$ Brownish black, darker than the ty, cheeks anteriorly, mandibles, scapes, 

 base of funiculi, thorax at the insertion of the wings, and legs reddish yellow, 

 or reddish brown ; scale lighter or darker brown. 



It differs from fusca in colour and in being more pubescent, the whole insect 

 having a more or less silky appearance ; epinotum entirely, or nearly entirely 

 dark. Gaster opaque, much more pubescent than in fusca. Wings slightly 

 infuscate. Long. 8-9-5 mm. 



$ Black, like fusca, but duller and more pubescent, especially on the gaster, 

 and the legs are more reddish. 



Scale slightly, at any rate not deeply emarginate. Wings a little darker 

 than in the $. Long. 7-3-10-3 mm. 



Original description of Formica glebaria Nylander [Acta. Soc. Sc. 

 Fenn. 2 917-919 (1846)] : 



" Operaria : nigra nitida valde cinereo-micans ; mandibulis, antennarum 

 scapis flagellorumque basibus et pedibus vel totis vel tibiis tarsisque piceis 

 seu piceo-rufescentibus ; ocellis parvis ; squama sursum late subtriangulariter 

 subrotundata. 



^. Long, circa 2 lin. adeo similis praecedenti, ut omnia, quae de ea dicta 

 sunt, in praesentem etiam speciem valeant, si addis tantum praecedenti 

 nitorem cinereo-sericeam et demis ab abdomine ejusdem pilositatem longius- 

 culam albidam. Palpi labiales articulo 3 : tio subtriangulari apice latius- 

 culo. Color ut supra. Abdomen dense cinereo-sericeum, setulis brevibus 

 flavidis parcis, marginibus segmentorum saepe membranaceo-pallescentibus, 

 basibus saepe quoque politioribus. 



Femina : nigra nitida valde cinereo-micans ; mandibulis, antennarum 

 scapis, coxarum apicibus, trochanteribus, geniculis tibiisque cum tarsis 

 piceo-rufescentibus ; alis albo-hyalinis parum fuscedine tinctis, nervis 

 fuscis, stigmate obscure fusco ; squama late subtriangulari supra inaequali. 



