The polymorphism of a lygaeid
bug Oxycarenus (Oxycarenus) multiformis Samy.
However, the possibility that the short-winged morph occurred by a gene mutation in the laboratory cannot be excluded, as reported for a lygaeid
bug in which no short-winged morph is known in field populations (Klausner et al.
The incidence and evolutionary significance ofwing polymorphism in lygaeid
bugs with particular reference to those of South Africa.
As an insectivore with a diet consisting predominantly of coleopterans, lygaeid
bugs, and lepidopterans (mostly moths; Freeman, 1979, 1981), the cheek teeth have an arrangement of three large primary cusps and several smaller secondary cusps connected with high ridges that form a W-shaped pattern (Whitaker et al., 1996).
Medium-sized prey (from 50-100% of spider body length) constituted 25.6% and included a psocopteran, curculionid beetles, a lygaeid
bug, Ozyptila, Xysticus sp., gnaphosid spiders, some Messor ants and some conspecific females.
The bug possesses nearly microscopically small wings and has the longest, thinnest legs and the most elongated head of any Lygaeid
bug in the world.
One such insect is Spilothetus pandurus, a brightly colored lygaeid
bug that is very common in the deserts of northern Sudan.
Wing and flight muscle polymorphism in a lygaeid
bug, Horvathiolus gibbicollis: determinants and life history consequences.
Additional factors contributed to uncertainty regarding which aspects of genital structure were most important biologically: the lack of consistent juxtapositioning of male and female structures during copulation in some species, such as the melolonthid, chrysomelid and cicindellid beetles; the membranous nature of the portions of the female with which the male meshed during copulation and which lacked precise points of reference as in the earwig and the lygaeid
bug; and our lack of understanding of the precise positions of male and female structures in some species (see Appendix 1).