118 
Psyche 
[Septemoer 
lose, the spinules isolated and rather coarse. Anterior sur- 
face of the labium with a few minute spinules in short 
transverse rows. Hypopharynx sparsely spinulose, the 
spinules minute and in short transverse rows. (Material 
studied: numerous larvae from North Dakota) 
Myrmica rubra (Linnaeus) 
Adlerz (1886, p. 52) stated that overwintering larvae 
were remarkably hairy. (Referred to as ruginodis.) 
Donisthorpe, 1915 (=1927), PL I: an excellent photo- 
graph of a larva in side view. (Referred to as ruginodis.) 
Gosswald (1934/35, p. 125) has recorded this species as 
a mermithid host; presumably the nematode larvae had 
been parasitic in the ant larvae. (Referred to as ruginodis.) 
Hagmeier (1912, p. 529) reported the larvae of the 
nematode Mermis brevis Hagmeier in the larvae of this ant. 
Janet, 1904, Fig. 11 on p. 32: hairs. The one-hooked 
hair is refigured by Escherich 1906, Fig. 32 (=1917, Fig. 
38B) . 
Latreille, 1802, p. 7 : “La larve ressemble a un petit ver 
sans pied, dont le corps est compose de douze anneaux, et 
dont la tete est ordinairement penchee vers la poitrine.” 
Lubbock (1882, p. 7) observed a larval period of less 
than a month. (Mentioned by Adlerz, 1886, p. 53) (Re- 
ferred to as ruginodis.) 
Schwammerdam, 1693, PL ix: Fig. ill shows a larva 
(probably rubra) in ventral view; Fig. iv, in side view. 
Starcke (1948, p. 29) compared this larva with that of 
M. schencki: “Oncochaetae occur on Th. n and Th. m also, 
and on 7 abdominal segments, and they are longer, with 3 
larvae 222 Micron was found. The Acrochaeta measures 
91 to 128 Micron, exceptionally 164 (length of larva 1.57 
mm, head 0.38 mm).” (Referred to as ruginodis.) 
Myrmica rubra laevinodis Nylander 
Similar to emeryana except in the following details : 
Anchor-tipped body hairs restricted to the dorsal surface 
of abdominal somites I-VI. Head hairs shorter (0.009-0.13 
mm). Labrum narrowed dorsally; anterior surface of 
each lobe with two minute hairs and one or two isolated 
sensilla ; posterior surface of each lobe with one or two 
