1000 FORMICIDAE 



(Subgenus Nylanderia Emery) 



P. parvula Mayr. SI: Long Neck, Arrochar, Tottenville, Watchogue (D&B) ; LI: 

 Pinelawn, Wyandanch, Central Pk., Cold Sp. Harb. (D&B). Under stones in 

 gravelly and sunny places (Wheel). 



P. longicomis (Latr.). NYC (D&B). Introduced. 



Lasius Fabricius 1^9 



(Subgenus Lasius Fabricius) ^^o 



(The members of this subgenus are not exclusively subterranean in habit.) 



L. niger (L.) var. americanus Emery. Common everywhere. McLean (Wheel- 

 CU) ; Ithaca; Slide Mt. (Beq) ; SI: Arrochar, Arlington, Watchogue, Long 

 Neck, etc. (D&B) ; LI: Flatbush, Rockaway Beach, Maspeth, Brooklyn, Yap- 

 hank, Fire L, Gardiners I., Pinelawn, Wyandanch, Jamaica, Cold Sp. Harb. 

 (D&B). The most abundant of ants and hence of all insects. Nests indiffer- 

 ently in rotten wood, under bark, logs, or stones, or in soil. Cultivates root 

 aphids, but also visits the foliage of trees and bushes in search of aphids 

 (Wheel). 



L. niger (L.) var. neoniger Emery. Otto; Ithaca (CU). 



(Subgenus Chthonolasius Ruszky) 



(These ants are exclusively subterranean, except for the mating flight. They 

 cultivate root aphids and coccids [Wheel]). 



L. brevicomis Emery. Ithaca; Bronxville (Wheel); LI: Long Beach, Yaphank 

 (D&B). 



L. flavus (L.) subsp. nearcticus Wheel, (myops Forel). Ithaca; Garrison (Ckll) ; 

 LI: Cold Sp. Harb. (D&B). The American representative of the European 

 flavus. The colonies, which are rather small, are formed under stones on hill 

 slopes and in pastures, where the soil is rather dry and sandy (Wheel). 



L. umbratus (Nyl.) subsp. mixtus Nyl. var. aphidicola Walsh. Ithaca, Bdy (Beq) ; 

 McLean (Wheel); Cedar Hill, Albany (Beq); Richford Sps. ; Bronxville 

 (Wheel) ; SI: south shore, and Mariner's Harb. (D&B) ; LI: Gardiners I. 

 (D&B) ; Bergen Beach, VKrochow (Beq). Populous colonies under stones, 

 or in logs and stumps in damp shady woods (Wheel). 



L. umbratus (Nyl.) subsp. minutus Emery. McLean, SRobinson (Wheel-CU) ; 

 SI: New Springville (D&B). 



(Subgenus ACANTHOMYOPS Mayr) 

 (These are also subterranean, cultivating root aphids [Wheel]). 



L. interjectus Mayr. Canandaigua L. (Beq) ; SI, found many times (D&B) ; LI: 

 Coram (D&B). Nests in old logs and stumps in open woods, and occasionally 

 makes rough mounds, or excavates its galleries under large stones (Wheel). 



L. claviger (Roger). Ithaca; Tarrytown (Beq); Bronxville (Wheel); Van Cort. 

 Pk. (Beq) ; SI: Clove Val., Princess Bay, etc. (D&B) ; LI: Selden, Amagan- 

 sett, Riverhead, Wading R., Gardiners I., Huntington, Flatbush, North Beach, 

 Maspeth, Jamaica (D&B). Nests under stones along the margin of woods 

 where there is plenty of warmth and moisture (Wheel). 



"^ If the Erlangen List is accepted, the name Lasius will be replaced by Acanthomyops Mayr. 

 "0 If the Erlangen List is accepted, the name of the subgenus Lasius will be replaced by 

 Donisthorpea Morice and Durrant. 



