1962] 
Brown — Strumigenys 
247 
ward in Mexico to sheltered canyons and cultivated areas of southern 
Arizona; greater Antilles (except Jamaica). Unaccountably absent 
from certain well-collected areas within this range, such as parts of the 
Canal Zone, Trinidad and British Guiana, although plentiful in Costa 
Rica and at least some localities in Colombia. This species tolerates 
much drier conditions and will live in plantations and other cultivated 
situations, so perhaps it is found mostly in habitats outside the primary 
forest in the central parts of its range. Its range and ecological ampli- 
tude are greater than those of any other New World Strumigenys. 
Synonyms: S . unidentata Mayr, S. unispinulosa Emery, S. uni- 
spinulosa var. longicornis Emery, S. fusca Emery, S. louisianae var. 
obscuriventris Wheeler, 5 . bruchi Forel, S. infidelis Santschi, S. eggersi 
Var. cubaensis Mann, S. louisianae subspp. laticephala M. R. Smith, 
soledadensis Weber, guatemalensis Weber, and costaricensis Weber, 
S. clasmospongia Brown. The long list of synonyms reflects in part 
the rather extreme variation shown by this species on the South Ameri- 
can continent. More peripheral populations (North and Central 
America, West Indies, Argentina) tend to be more uniform both 
within and among themselves. 
41. Strumigenys producta Brown, 1953 
Brown, 1953a: 3-4, worker. 
This species is a larger, long-mandibulate version of S. louisianae. 
In view of the extensive variation now known for the latter species in 
South America, it would not be surprising to find that S. producta is 
just an extreme local variant of S. louisianae. 
Distribution: Basin of the Rio Beni, Bolivia; known only from the 
types. 
Group of connectens 
42. Strumigenys connectens Kempf, 1958 (Fig. 11) 
Kempf, 1958a: 59-64, figs. 1-3, worker, variation. 
Biology: The paratype series was taken in orchid plants in U. S. 
quarantine, so the species is presumably arboreal. 
Distribution : The species is known from two localities, both in 
Colombia. 
43. Strumigenys laevipleura Kempf, 1958 
Kempf, 1958a: 64-65, figs. 5-7, worker. 
Biology: Like S. connectens, this species was also taken from an 
orchid shipment, and it may therefore be arboreal in habits. 
Distribution : Known only from the type series from Colombia, 
apparently from the vicinity of Medellin. 
