DONISTHORPEA. 201 



174 (1910) 56 ; Donisthorpe Entom. 44 390 (1911) 57 ; Crawley Trans. Ent. 

 Soc. Lond. 1911 657-6G3 58 ; Donisthorpe Ent. Rec. 24 6 (1912) 59 : 25 63 

 (1913) 60 ; Crawley Ent. Rec. 25 135 (1913) 61 ; Crawley and Donisthorpe Int. 

 Ent. Cong. Oxford 1912 2 26-31 (1913) 62 ; Donisthorpe Ent. Rec. 26 39 

 (1914) 63 . Donisthorpea nigra Morice and Durrant Trans. Ent. Soc. Lond. 

 1914 423 (1915) 6 *. 



Lighter or darker black-brown, the thorax sometimes lighter, mandibles, 

 base of the antennae, articulation of the joints of the legs, and the tarsi yellow. 

 Body pubescent, thickest on gaster. 



Head not emarginate posteriorly ; frontal furrow indistinct ; eyes fairly 

 large ; ocelli very small and indistinct ; scape and tibiae with outstanding 

 hairs. Long. 3*4-5 mm. 





Fig. 83. Donisthorpea nigra $. 



$ Dark brown, or blackish brown, mandibles, scape, tibiae and tarsi reddish. 



Head small, narrower than thorax, not emarginate posteriorly ; scape 

 with outstanding hairs. Thorax narrower than gaster. Gaster large, the 

 same colour beneath as above. Tibiae with outstanding hairs. Wings 

 large, clear. Long. 8-9 mm. (7-10 mm. teste Andre.) 



c Blackish brown with apex of the antennae and tarsi, and the articulations 

 of the joints of the legs lighter. 



Head dull ; frontal furrow distinct ; mandibles with one tooth, black- 

 brown ; scape with outstanding hairs. Thorax narrowly lighter at the 

 insertion of the wings. Tibiae with outstanding hairs. Wings clear. 

 Long. 3-5-4- 7 mm. (3-5-5 mm. teste Andre.) 



Original description of Formica nigra Linnaeus [Syst. Nat. Ed. 



10. 1 580 (1758)] : 



" F. tota nigra nitida, tibiis cinerascentibus. 

 Fn. svec. 1022 Formica atra. 

 Raj. ins. 69. Formica minor e fusco nigricans. 

 Habitat in Europae terra" 



Habitat. 



Donisthorpea nigra ranges over the whole of Europe, and is also 

 found in Japan, Turkestan, the North of Africa, and Madeira. 

 Ruzsky records it from the Caucasus and Siberia. Two varieties 

 occur in the Northern States of America, and a third is found in 

 British America, Alaska, and Colorado, 



