1. Social behaviour ofRopalidia fasciata (Hymenoptera: Vespidae) females on satellite nests and on a nest with multiple combs

   • Yosiaki Itô

   OriginalPaper Pages: 73 - 80

2. The prediapause copulation and its significance in the butterflyEurema hecabe

   • Yoshiomi Kato

   OriginalPaper Pages: 81 - 90

3. Female choice for male gregariousness in a Stink bug,Megacopta punctissimum (Montandon) (Heteroptera, Plataspidae)

   • Yoshinori Hibino

   OriginalPaper Pages: 91 - 95

4. Soldiers of a European gall aphid,Pemphigus spyrotecae (Homoptera: Aphidoidea): Why do they molt?

   • Shigeyuki Aoki
   • Utako Kurosu

   OriginalPaper Pages: 97 - 104

5. A model of mate searching and territorial behaviour for “flier” type dragonflies

   • Hidenori Ubukata

   OriginalPaper Pages: 105 - 112

6. The significance of blends of two sex pheromone components on the behavior of maleSpodoptera litura F. (Lepidoptera: Noctuidae)

   • Kenjiro Kawasaki

   OriginalPaper Pages: 113 - 119

7. Assessment of the maple aphid colony by the hover fly,Episyrphus balteatus (de Geer) (Diptera: Syrphidae) I

   • Eiko Kan
   • Mitsuhiro Sasakawa

   OriginalPaper Pages: 121 - 127

8. Parental care and mating systems of cichlid fishes in Lake Tanganyika: a preliminary field survey

   • Tetsuo Kuwamura

   OriginalPaper Pages: 129 - 146

9. The mating system ofTokunagayusurika akamusi (Diptera; Chironomidae): II. Experimental analysis of male mating behaviour at the resting place

   • Kimio Otsuka
   • Masahiro Kon
   • Toshitaka Hidaka

   OriginalPaper Pages: 147 - 152

10. Mate acquisition by a solitary crabZebrida adamsii, a symbiont of the sea urchin

    • Yasunobu Yanagisawa
    • Akira Hamaishi

    OriginalPaper Pages: 153 - 162