Myrmicinae: key to genera, couplet 16

Myrmicinae: key to genera couplet 16
Key: modified from Wheeler & Wheeler (1963), Hölldobler & Wilson (1990), Bolton (1994)

Taxa remaining

Aphaenogaster
Leptothorax
Messor*#
Pheidole

Figure . Myrmicinae: Leptothorax texanus davisi

Figure . Myrmicinae: Apahenogaster tennesseensis

16.With alitrunk in profile, the dorsal outline simple, more or less flat to evenly shallowly convex, the dorsal surface of the propodeum on approximately the same level as the promesonotum; mandibles with 5 or 6 regular teeth which decrease in size from the apex to base of the mandible. (collected in all Midwestern states) (2a 5a 6b 8b 10a or 10b 11a)
...Leptothorax
(in part: ant=12)

With alitrunk in profile, dorsal outline not simple, the dorsal surface of the propodeum depressed far below the level of the promesonotum; mandibles with 7 or more teeth, often with ill-defined crenulations or denticles between the teeth. (collected in all Midwestern states)
...17

Genus Leptothorax

Subfamily: Genus: L. ambiguus Emery MN: facultative polygeny & polydomy

Myrmicinae Leptothorax L. ambiguus foveatus Smith

L. crassipilis Wheeler, W.M.

L. curvispinosus Mayr facultative polygeny & polydomy; queen adoption

L. duloticus Wesson, L.G.

L. longispinosus Roger MN, TC: facultative polygeny & polydomy; genetic effect; sex ratio

L. muscorum (Nylander) MN: YSNP infected by sporozoa

L. pergandei Emery

L. rugatulus Emery

L. schaumii Roger

L. texanus Wheeler, W.M. MN

L. texanus davisi Wheeler, W.M. MN

L. tricarinatus Emery

L. texanus davisi

L. ambiguus

Notes: social parasitic ant, prefer cavities, kill host adult, primitive, with ectoparasites: mites, nest in log, other ants' nests, prefer performed cavities

Genus Leptothorax Mayr <”Ø›VDƒ›
confucii (Forel, 1912): Chou & Terayama, 1991: 78; - Bolton, 1995: 237. •Ú•ßØdØ›VD
taivanensis Wheeler, 1929: Chou & Terayama, 1991: 78; - Bolton, 1995: 245. ªODWØdØ›VD

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16.With alitrunk in profile, the dorsal outline simple, more or less flat to evenly shallowly convex, the dorsal surface of the propodeum on approximately the same level as the promesonotum; mandibles with 5 or 6 regular teeth which decrease in size from the apex to base of the mandible. (collected in all Midwestern states) (2a 5a 6b 8b 10a or 10b 11a)	...Leptothorax (in part: ant=12)
With alitrunk in profile, dorsal outline not simple, the dorsal surface of the propodeum depressed far below the level of the promesonotum; mandibles with 7 or more teeth, often with ill-defined crenulations or denticles between the teeth. (collected in all Midwestern states)	...17

Subfamily:	Genus:	L. ambiguus Emery	MN: facultative polygeny & polydomy
Myrmicinae	Leptothorax	L. ambiguus foveatus Smith
		L. crassipilis Wheeler, W.M.
		L. curvispinosus Mayr	facultative polygeny & polydomy; queen adoption
		L. duloticus Wesson, L.G.
		L. longispinosus Roger	MN, TC: facultative polygeny & polydomy; genetic effect; sex ratio
		L. muscorum (Nylander)	MN: YSNP infected by sporozoa
		L. pergandei Emery
		L. rugatulus Emery
		L. schaumii Roger
		L. texanus Wheeler, W.M.	MN
		L. texanus davisi Wheeler, W.M.	MN
		L. tricarinatus Emery