A new survey, by HPLC, of the visual pigment chromophores in the compound eye of Japanese insects was made during the Summer and Autumn of 1988. The results largely conformed to those of previous studies (in Europe, Japan and the U.S.A.), except for the discovery of several coleopterans unusual in containing both retinal (A1) and 3-hydroxyretinal (A3). The chromophores of five coleopteran families are described for the first time: the Gyrinidae, Hydrophilidae and Lampyridae contain both A1 and A3: while in the Lucanidae and Melandryidae only A1 was detected. Of the Family Cerambycidae (the only insect family so far discovered to contain members with different chromophore types), one of the two major subfamilies not previously investigated, the Lepturinae, yielded only A1. Newly-tested species from the Prioninae conformed to earlier findings (A1 only). Additional data (Vogt, previously unpublished) suggest that the Cantharidae, Cicindelidae, Dermestidae and Tenebrionidae also utilize only A1. The distribution of A1 and A3 among the insects is discussed in terms of phylogeny, diet, and the photic environment. The coleopterans utilizing both A1 and A3 are widely separated, phylogenetically, but most are carnivorous and associated with an aquatic environment. The co-incidence of these features also in the Odonata, which generally utilize both A1 and A3, suggests that chromophore content in both groups may well be environmentally related. These findings are compared with the seasonal and environment-related occurrence of A1 and A2 (3-dehydroretinal) reported for fishes, amphibians and crustaceans. The data now accumulated for compound eye chromophore content of the Insecta are listed. Included are first mentions of the Dermaptera (the earwig Anisolabis maritima) and Megaloptera (Sialis lutaria), which contain only A1. Exceptions to the previously apparent, general phylogenetic trends are now known in the Orders Coleoptera, Diptera, Neuroptera and Odonata.
ASJC Scopus subject areas
- Insect Science