2 4 8 
Psyche 
[December 
44. Strumigenys xenognatha Kempf, 1958 
Kempf, 1958a: 65-66, fig. 4, female. 
Biology: The holotype female, a unique, was taken from orchid 
plants and bears the same data as the S. laevipleura types, from which 
it differs too widely to be their queen. Perhaps it is a social parasite of 
S. laevipleura. 
Distribution : Colombia. 
45. Strumigenys subedentata NLayr, 1887 
Brown, 1960: 48-50, figs. 7, 9, worker, female, male, variation, distribution, 
biology. 
Biology : This species nests in small colonies in the soil or soil cover 
in mesic tropical forest and feeds chiefly on entomobryoid Collembola. 
Distribution: Southern Mexico south to southeastern Brazil; Trin- 
idad ; probably v/idespread in interior South America. 
Synonyms: S. tristani Menozzi, S. clavata Weber. 
Figures 7-8. Strumigenys spp., workers, dorsal full-face view of head. 
Figure 7, S. precava from Panama Canal Zone, showing fringing pilosity 
only. Figure 8, S. hindenburgi from Tucuman, Argentina. Not to same scale. 
46. Strumigenys trieces Brown, i960 
Brown, 1960: 50-51, fig. 8, worker. 
Distribution : Costa Rica ; known only from the holotype. 
Group of gundlachi 
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