|prōˌste|mad.ik adjective
also pro·stem·mate prōˈsteˌmāt
Etymology: prostemmatic from pro- (I) + New Latin stemmat-, stemma one of the simple eyes of an insect, ocellus + English -ic; prostemmate from pro- (I) + -stemmate (from New Latin stemmat-, stemma ) — more at stemma
: of, relating to, or constituting a minute sense organ in front of the eyes of collembolan insects