Table 2.

Threat distribution across genera for which there were sufficient samples to determine whether species were more threatened than would be expected by chance, or under threatened: n.s., not significant; +, over threatened; −, under threatened.

family	proportion observed	proportion expected	total species (non-DD)	>expected threat level p-value	<expected threat level p-value	over or under threatened
Pacifastacus	0.333	0.009	3	<0.001	1	+
Cambarellus	0.250	0.028	12	<0.001	1	+
Cambarus	0.186	0.171	86	0.282	0.718	n.s.
Fallicambarus	0.188	0.031	16	<0.001	1	+
Hobbseus	0.750	0.012	4	<0.001	1	+
Astacoides	0.667	0.012	3	<0.001	1	+
Astacopsis	0.333	0.005	3	<0.001	1	+
Cherax	0.400	0.066	30	<0.001	1	+
Engaeus	0.333	0.059	30	<0.001	1	+
Engaewa	0.600	0.009	5	<0.001	1	+
Euastacus	0.813	0.083	48	<0.001	1	+
Ombrastacoides	0.333	0.019	9	<0.001	1	+