On Variability of Two Arabian Myrmeleontoid Lacewings (Neuroptera: Myrmeleontidae, Ascalaphidae)

Abstract

Body-size dimorphism in the antlion Myrmeleon hyalinus hyalinus Olivier, 1811 is described; it is manifested in the existence of two size forms resulting from different larval development rates in the subpopulations. One more type of variation, namely infrasubspecific color polymorphism, is described in the owlfly Ptyngidricerus venustus Tjeder et Waterston, 1977; it is manifested in the existence of a bright-colored morph with obsidian-brown wing membranes, typical of most congeners, and morphs with cloudy or hyaline wings with apical bands. These color morphs occur in both sexes. A new synonymy is established: Ptyngidricerus Weele, 1908 = Omanoidricerus Ábrahám et Mészáros, 2002, syn. n.