Sur un Nématode parasite de la Courtilière Gryllotalpa gryllotalpa (L.) (Orthoptera Gryllotalpidæ) : Gryllophila skrjabini (Serguiev) basir var. ovipolita nov. (Oxyuroïdea Thelastomatidæ)

Wing dimorphism of European mole cricket Gryllotalpa gryllotalpa (L.) (Orthoptera: Gryllotalpidae) in the north-west of Iran

The seasonal study of wing dimorphism in the European mole cricket, Gryllotalpa gryllotalpa (Linnaeus, 1758) (Orthoptera: Gryllotalpidae), was carried out in northwest Iran. Based on present research, the long-winged (LW) morph appeared in early-mid spring when vegetation density is low and the crickets need to fly to search for food. Study of foretibiae showed that the dactyls are elongated an...

Natural History Museum Sound Archive I: Orthoptera: Gryllotalpidae Leach, 1815, including 3D scans of burrow casts of Gryllotalpa gryllotalpa (Linnaeus, 1758) and Gryllotalpa vineae Bennet-Clark, 1970

BACKGROUND The Natural History Museum (NHM) sound archive contains recordings of Gryllotalpidae, and the NHM collection holds plaster casts of the burrows of two species. These recordings and burrows have until now not been made available through the NHM's collection database, making it hard for researchers to make use of these resources. NEW INFORMATION Eighteen recordings of mole crickets (...

Hearing and spatial behavior in Gryllotalpa major Saussure (Orthoptera: Gryllotalpidae).

The prairie mole cricket (Gryllotalpa major Saussure) is a rare orthopteran insect of the tallgrass prairie ecosystem of the south central USA. Populations are known to currently occupy fragmented prairie sites in Oklahoma, Arkansas, Kansas and Missouri, including The Nature Conservancy's Tallgrass Prairie Preserve in north central Oklahoma. Prairie mole cricket populations were surveyed at thi...

Sur un Cas Particulier de la Conjecture de Cerny

Let A be a finite automaton. We are concerned with the minimal length of the words that send all states on a unique state (synchronizing words). J. Černý has conjectured that, if there exists a synchronizing word in A, then there exists such a word with length 6 (n − 1) where n is the number of states of A. As a generalization, we conjecture that, if there exists a word of rank 6 k in A, there ...

Etude sur la digestion pancratique de la caseine pour la production de la toxine tetanique