Table 1.

Morphological and strike performance characteristics of Mystrium camillae castes studied. All values are means ± standard deviation. The unit of replication is individual workers (n = 5). The minimum or maximum values for each striking mandible performance parameter from 3–5 strikes from each individual were used for summary statistics. Values that are significantly different from each other are listed in italics (t-test, p < 0.05).

	body mass (mg)	mandible mass (µg)	mandible length (mm)	strike duration (µs)	angular displacement (rad)	peak angular velocity (rad s−1)	peak linear velocity (m s−1)	peak angular acceleration (rad s−2)	peak linear acceleration (m s−2)	power density (watt kg−1)
major worker	2.66 ± 0.78	85.9 ± 14.4	1.56 ± 0.146	34.8 ± 4.1	1.27 ± 0.10	5.6 × 104 ± 8.7 × 103	86.9 ± 12.1	6.0 × 109 ± 2.1 × 109	9.3 × 106 ± 3.2 × 106	5.0 × 106 ± 1.6 × 106
minor worker	0.48 ± 0.06	8.5 ± 2.6	0.844 ± 0.0595	14.6 ± 2.1	1.19 ± 0.15	11.1 × 104 ± 18.4 × 103	93.3 ± 14.5	17.2 × 109 ± 2.7 × 109	14.5 × 106 ± 2.5 × 106	2.5 × 106 ± 1.1 × 106