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Adult antennae of Neophylax rickeri are straw coloured, with dark brown scape and pedicel. The vertex of the head is a yellow-brown which is bordered by lateral ocelli, and grey-brown frontal and median warts. The thorax has a straw coloured backgound with grey-brown shading. On segment 9 of the male, the dorso-posterior edge is developed into a postero-ventrally directed, long and tapered process with a rounded tip. The cercus is similarly developed, situated parallel to the process from segment 9.

In autumn and winter, the larvae will generally grow and overwinter. During the spring and early summer, final instars will fasten their cases to rocks and seal off the openings, remaining quiescent in a prepupal diapause. Adults emerge and aestivate for some weeks.

Reported from British Columbia and Alberta, south to California and east to Idaho and Montana. In Alberta, it has only been collected from the south-western corner of the province, from the Oldman River south to Waterton Lakes National Parks.