Formicinae: key to genera couplet 7
Key: modified from Wheeler & Wheeler (1963), Hölldobler & Wilson (1990), Bolton (1994)

Taxa remaining Tribe Lasiini: Acanthomyops Lasius

Figures 46,47. Formicinae: Acanthomyops coloradensis

Figure 48. Formicinae: Lasius nearcticus Figure 49. Formicinae: L. flavus Figure 50. Formicinae: L. neoniger

7.Maxillary palps 3 segmented and extremely short, palp formula 3,3 (Figs. 46,47) (collected in all Midwestern states) (1b 2b 3b 4a)(none in Taiwan)	...Acanthomyops
Maxillary palps 6 segmented and moderately short to long, palp formula 6,4 (Figs. 48,49,50) (collected in all Midwestern states) (1b 2b 3b 4b 5a 6a)	...Lasius

Subfamily:	Genus: Acanthomyops	A. bureni Wing
Formicinae	w194 7b 4b 1b	A. claviger (Roger)	MN, TC, Cedar creek, McKnight
		A. coloradensis (Wheeler)
	w 3b 2b 1a	A. interjectus (Mayr)	MN, TC, McKnight
	w 7a 4b 1a	A. latipes (Walsh)	MN, McKnight
	w 2a 1a	A. murphyi (Forel)
	w 6a 5b 4a 1b	A. occidentalis (Wheeler)	MN, TC
		A. plumopilosus (Buren)	MN
	w	A. pubescens (Buren)	MN
	w	A. subglaber (Emery)	MN

Subfamily:	Genus:
Formicinae	Lasius
	subgenus Cautolasius Wilson
		L. fallax Wilson	w176 7a 6a 1b
		L. flavus	w 7b 6a 1b
		L. nearcticus Wheeler
	subgenus Chthonolasius Ruzsky
		L. minutus Emery
		L. speculiventris (Emery)	w 8a 6b 1b
		L. subumbratus Viereck	w 11a 9b 8b 6b 1b
		L. umbratus (Nylander)	w 10a 9a 8b 6b 1b, make slaves of L. neoniger
	subgenus Lasius Fabricus	less interesting, general habit, with ectoparasites: mites
	prairie ant	L. alienus (Foerster)=L. niger americanus)	w 5b 3b 2b 1a, under tree bark, most aggresive, defend food from other ants
		L. crypticus Wilson	w 4b 3a 2b 1a
		L. neoniger Emery=L. niger neoniger=L. niger neoniger=L. niger neoniger	w 4a 3a 2b 1a
		L. pallitarsis (Provancher)=L. sitkaensis=L. sitkaensis
		L. sitiens Wilson