S. Mahunka szerk.: Folia Entomologica Hungarica 61. (Budapest, 2000)

Figs 1-3. Megymenum sp. — 1: interior view of hind tibia; 2: enlarged view of inner surface of excavated and enlarged hind tibia; 3: lateral margin of female abdomen and hind tibia hind tibia according to Durai (1987). Thus, only two genera of the family have unmodified hind tibia and possibly a third (Folengus Distant). From the available evidence, this condition of the hind femur is a character of the female rather than both sexes (Durai 1987, Lis 1990). Careful examination and illustration of the varying degrees of the development of this stridulatory system would be a useful addition to the systematic studies of this most interesting group of pentatomoid Heteroptera. There has been heavy reliance on the male genitalia (Leston 1955, Durai 1987, Lis 1990). Female structures have received less attention than males except for the spermatheca and the genital plates. The nature of the stridulatory structures could add other female characters for phylogenetic study. It is useful to note that Dinidor Latreille is the only genus of the tribe in the New World (Durai 1987) and all the known species of this genus lack any tibial modification. All other genera occur in the Old World. Finally, it will be of particular interest to learn about the condition of the hind tibia of the female of Folengus papuensis. Will it resemble the monotypic Urusa crass and have unmodified hind tibial on the female or have expanded hind tibia such as found in the other taxa in the family? Acknowledgments — I would like to take this opportunity to thank my many colleagues in Hungary who were such gracious hosts during my visits to their lovely country in 1994 and 1995. They were memorable. Not only did we see much of the Hungarian