14. Myrmica acervorum ^HNS. B.M.

Formica acervorum, Fabr. ^HNS Ent. Syst. ii. 358. 38; Syst. Piez. 407. 50.

Myrmica acervorum, Zett. ^HNS Ins. Lapp. 451.

Nyl. Adno. Mon. Form. Bor. Eur. 936. 7; Addit. Mon. Form. 1057; Form. Fr. et d'Alger. 89. 16.

Foerst. Hym. Stud. Form. 61.32.

Schenck, Beschr. Nass. Ameis. p. 97.

Smith, Brit. Form. 124. 8.

Leptothorax acervorum ^HNS, Mayr. Form. Austr. 164. 1.

Myrmica lacteipennis, Zett. ^HNS Ins. Lapp. 452. 5 [[male]].

Myrmica graminicola, Latr. ^HNS Hist. Nat. Fourm. 255. [[worker]] (var.).

Hab. Britain; France; Germany; Austria; Finland.