• How reproductive success of males of cricket Gryllodes sigillatus depends on size and song parameters.
• Differences between sexes in sensitivity and resistance to infection in cricket Gryllodes sigillatus.
• Influence of infection on size of nuptial gift and song parameters in males of cricket Gryllodes sigillatus. 
• Biological control as an alternative to conventional, chemical insecticides.
• Phylogeography of selected species characterized by disjunctive distribution