1. Behavioural specialization in pre-reproductive colonies of the allodapine beeExoneura bicolor (Hymenoptera: Anthophoridae)

   • P. A. Melna
   • M. P. Schwarz

   Research Articles Pages: 1 - 18

2. Formosan subterranean termite swarming behavior and alate sex-ratio (Isoptera: Rhinotermitidae)

   • G. Henderson
   • K. S. Delaplane

   Research Articles Pages: 19 - 28

3. Colony structure of a bamboo-dwellingTetraponera sp. (Hymenoptera: Formicidae: Pseudomyrmecinae) from Malaysia

   • A. Buschinger
   • R. W. Klein
   • U. Maschwitz

   Research Articles Pages: 29 - 41

4. Division of labor inPonera pennsylvannica (Formicidae: Ponerinae)

   • S. C. Pratt
   • N. F. Carlin
   • P. Calabi

   Research Articles Pages: 43 - 61

5. Exocrine glands and the attractiveness of the ergatoid queen in the ponerine antMegaponera foetens

   • B. Hölldobler
   • Ch. Peeters
   • M. Obermayer

   Research Articles Pages: 63 - 72

6. Crossfostered drones ofApis cerana (Fabricius, 1793) andApis koschevnikovi (Buttel-Reepen, 1906) fly at their species specific mating times

   • G. Koeniger
   • N. Koeniger
   • S. Tingek

   Research Articles Pages: 73 - 78

7. Forces affecting water imbibition inMacrotermes workers (Termitidae, Isoptera)

   • J. -A. Lys
   • R. Leuthold

   Research Articles Pages: 79 - 84

8. Field study on the foraging characteristics of a ponerine ant,Hagensia havilandi Forel

   • F. D. Duncan
   • R. M. Crewe

   Research Articles Pages: 85 - 98

9. Nesting biology and nest re-use ofEulaema nigrita (Hymenoptera: Apidae, Euglossini)

   • M. L. Santos
   • C. A. Garófalo

   Research Articles Pages: 99 - 110

10. The leg exocrine system inSerritermes serrifer (Hagen, 1858), phylogenetic implications (Isoptera: Serritermitidae)

    • A. M. Costa-Leonardo

    Short Communication Pages: 111 - 114