Antweb.org Proof of Concept:
Overall, the specimens available on Antweb.org seem to be relatively
good estimates of the natural variation present in these species (Fig.
3). The proportion of overlap between Antweb.org and the worker head
width ranges reported by Cole (1984) does not differ from 1 (t = 1.26,
df = 16, P = 0.23). It should be noted, though, that several species on
Antweb.org show a much greater degree of variation (200-600%) compared
to Cole (1984) (Fig. 3 inset). When the Antweb.org sample range is
compared to four intensively measured species there is 70-88% overlap;
Antweb.org measurements show more variation in one of the four species
(P. rugosus , Fig. 3).