14 FORMICA UMBRATA. 



9. Formica umbrata. 



Foemina. Luteo-fusca, cinerascenti-sericea, pilis brevibus ad- 

 spersis pallide fuscis ; oris partibus, antennis pedibusque 

 pallide testaceis ; capite thorace paululum latiori ; oculis hir- 

 tulis; alls albescenti-hyalinis, a basi fere ad medium fusco- 

 umbratis, nervis brunnescentibus, stigmate fusco ; squama 

 obtuse angulatim emarginata. 



Operaria. Flava ; oculis parcissime hirtulis ; corporis pube se- 

 ricea subtiliori, pilis brevibus erectis sparsis paullo brevioribus. 

 rigidiusculis. 



Mas. Fusco-niger, nitidus, tenuissime cinerascenti-sericeus et 

 pilosulus ; palpis, antennarum flagellis, pedum articulis tarsis- 

 que testaceo-pallescentibus ; oculis hirtulis ; linea frontali 

 distincte impressa ; alis a basi ad medium infuscatis ; squama 

 subovali, apice subangulatim emarginata. 



Formica umbrata, Nyl. Addit. Mon. Form. Bor. Eur. p. 1048 ; 

 Form. Fr. et d'Alger. p. 70. 29. 



Smith, Brit. Form. p. 106. 6. 



Foerst. Hym. Stud. Form. p. 39. 18. 



Schenck, Beschr. Nans. Ameis. p. 59. 



Mayr. Form. Austr. p. 93. 25. 



Formica mixta, Foerst. Hym. Stud. Form. p. 41 & 72. 

 Formica affinis, Schenck, Nass. Ameis, p. 62, var. ? 



Mayr. Form. Austr. p. 96, var. ? 

 Formica brunnea, Smith, Cat. Brit. Hym. p. 2. 4. 



Female. Fuscous-yellow, densely covered with a fine cinereous 

 pile ; head a little wider than the thorax ; mandibles with elon- 

 gate punctures, their teeth black ; the antennae, face beneath 

 their insertion, and the legs pale reddish yellow ; the scape and 

 the legs pubescent as well as the eyes ; the scale of the petiole 

 widely but not deeply emarginate above. 



Worker. Extremely like the F. flava, but with the eyes, scape 

 of the antennae, and the tibiae pubescent. 



Male. Blackish brown, slightly pilose ; the antennas and legs 

 brown, with the flagellum, articulations of the legs, and the 

 tarsi pale ; the eyes pilose ; a distinctly impressed line in front 

 of the anterior stemma; the basal half of the wings brown, the 

 nervures testaceous, the stigma darker. 



This insect is very like the F. flava. The male and female are 

 easily distinguished by the dark-brown base of their wings, and 

 also by their pubescent eyes ; the latter character is not easily 



