a harmful bush – crickets from gorgan area decorana capitata ( uv.) ( tettigoniidae : decticinae)

معرفی ملخ شاخک بلند (.Decorana capitata ( Uv در منطقه گرگان

Experimental evidence for density-determined wing dimorphism in two bush-crickets (Ensifera: Tettigoniidae)

Macroptery is common in many species of Orthoptera, but the causes are still discussed. Besides the assumption that macroptery is genetically determined, there is evidence that wing dimorphism is induced by environmental factors, particularly population density. However, most of the research is on pest species. In contrast, knowledge of wing dimorphism in species that occur at low population de...

Isolated populations of the bush-cricket Pholidoptera frivaldszkyi (Orthoptera, Tettigoniidae) in Russia suggest a disjunct area of the species distribution

Phylogenetic analysis and assessment of the species status of mostly isolated populations of Pholidoptera frivaldszkyi in south-western Russia occurring far beyond the accepted area of the species distribution in the Carpathian-Balkan region were performed. Using the mitochondrial DNA cytochrome c oxidase subunit I gene fragment, we found a very low level of genetic diversity in these populatio...

Taxonomic notes on two species of bush katydids (Orthoptera: Tettigoniidae: Phaneropterinae) from Bukit Fraser, Malay Peninsula.

Material based on a taxonomic collection in Bukit Fraser, Pahang of Malay Peninsula enables the review of two genera of bush katydid (Phaneropterinae). The female of Elimaea (Rhaebelimaea) pseudochloris Ingrisch, 1998 is described and recorded for the first time outside its type locality, Thailand. One new species of Pseudopsyra from Bukit Fraser is described: Pseudopsyra bispina sp. n.

Short Communication a Paradoxical Problem in Insect Communication: Can Bush Crickets Discriminate Frequency?

Many bush crickets (Tettigoniidae) produce calls that consist of trains of transient high-frequency pulses (Fig. 1). Each pulse is generated by a file tooth on one wing being struck by a plectrum on the other, causing the wing resonator to produce harmonic transients each composed of only two or three cycles of oscillation. In animals, high-frequency sound can only be detected by means of some ...

Measuring sexual selection on females in sex-role-reversed Mormon crickets (Anabrus simplex, Orthoptera: Tettigoniidae).

Although many studies examine the form of sexual selection in males, studies characterizing this selection in females remain sparse. Sexual selection on females is predicted for sex-role-reversed Mormon crickets, Anabrus simplex, where males are choosy of mates and nutrient-deprived females compete for matings and nutritious nuptial gifts. We used selection analyses to describe the strength and...