Fig. 1. Quasistatic mechanical properties of each type of fibrous silk spun by Argiope argentata (mean ± s.e.m.). Standard errors were calculated using individual spiders, rather than total numbers of fibers tested, as the sampling unit. See Table 1 for sample sizes. ac, aciniform; cp, capture spiral; mj, major ampullate; mn, minor ampullate; tb, tubuliform.