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Fig. 4. Results from microspectophotometric analyses of photoreceptors of D. pumilio, together with best-fit rhodopsin templates (smooth lines; from Lipetz and Cronin, 1988). (A) Rod photoreceptors ({lambda}max=491 nm; N=16). (B) SWS cone photoreceptors ({lambda}max=466 nm; N=5). (C) MWS cone photoreceptors ({lambda}max=488 nm; N=14). (D) LWS cone photoreceptors ({lambda}max=560 nm; N=20). (E) Single oil droplet from a single LWS cone inner segment, showing no significant absorption throughout the visual spectrum.