Search results for "Orthoptera"
showing 10 items of 68 documents
Geschlechtsspezifische Unterschiede im H�utungshormon-Titer bei adulten Grillen
1977
Citizen Science: Sicilian Naturalistic News. 1. Natula averni (Orthoptera, Gryllidae) ; 2. Lindenia tetraphylla (Odonata, Gomphidae).
2019
The 2nd and the 3rd record in Sicily for Natula averni; the 1st was at Belice mouth (ODÉ et al., 2011). The 2nd site record in Sicily for Lindenia tetraphylla; the 1st was at lake “Lago della Trinità” (Castelvetrano,Trapani) (SURDO, 2017).
Diversity of leaf katydids (Orthoptera: Tettigoniidae: Phaneropterinae) of Dzanga-Ndoki National Park, Central African Republic, with selected record…
2013
Forty-four species of Phaneropterinae are recorded from Dzanga-Ndoki National Park in the Central African Republic. Eight species collected within the park are described as new to science: Phlaurocentrum morettoi n. sp., P. paratuberosum n. sp., P. elegans n. sp., Myllocentrum raggei n. sp., Poreuomena sanghensis n. sp., Cestromoecha longicerca n. sp., C. magnicerca n. sp., and Goetia purpurea n. sp. An additional new species from Guinea is described from specimens preserved in the Museo Nacional de Ciencias Naturales of Madrid, Poreuomena huxleyi n. sp. Eurycorypha stylata Stål, 1873 is recorded for the first time from Burkina Faso and Brycoptera lobata Ragge, 1981 from Ivory Coast. The fo…
High-speed duetting - latency times of the female acoustic response within the bush-cricket genera
2018
Abstract To find a mate, male and female bush-crickets of the family Phaneropteridae typically engage in duets. The male sings and the female responds. For mutual recognition, the amplitude pattern of the male song and the species-specific timing of the female response have been shown to be very important. In the seven studied species, belonging to the genera Leptophyes and Andreiniimon, these duets are extremely fast and nearly completely in the ultrasonic range. The females produce very short sounds by fast closing movements of the tegmina. They respond with species-specific delays of 20 to 150 ms after the beginning of the male song. The different latency times are probably not important…
An analysis of trade-offs in immune function, body size and development time in the Mediterranean Field Cricket, Gryllus bimaculatus
2005
Summary 1Immune defence has recently been viewed as a life-history trait that shows trade-offs with other life-history traits. However, studies exploring correlations between different components of immune defence and other life-history traits are scarce. 2In this study, two measures of immune function, body size, and development time were studied in the Mediterranean Field Cricket, Gryllus bimaculatus. 3We found no differences between the sexes, but differences in the correlation between the measure of immune function, development time, and body size. In both sexes, encapsulation rate was negatively correlated with body size and development time, whereas lytic enzyme activity was positivel…
A new species ofAnadrymadusaKarabağ (Orthoptera: Tettigoniidae) from Al Mujeb Nature Reserve, Jordan
2000
Abstract Anadrymadusa jordanica n. sp. from Jordan is described from one female specimen; it has elytra fully developed, longer than the whole body, a bi-concave ventral plate, between 7th sternite and subgenital plate, just longer than subgenital plate and showing a large median keel; the subgenital plate is as long as wide, with lobes with obtuse apical edge and a deep subacute excision.
Nuovi dati sulla distribuzione in Italia di alcuni Ortotteri (Orthoptera, Ensifera, Caelifera)
2018
Orthoptera,Vengono riportati nuovi dati sulla distribuzione in Italia di 10 specie di Ortotteri (5 Tettigoniidae, 2 Gryllidae e 3 acrididae), non segnalate in precedenza per alcune regioni o poco note.
Development of the filiform hairs on the cerci of Gryllus bimaculatus Deg. (Saltatoria, Gryllidae)
1978
The filiform hairs, mechanoreceptors of Gryllus, pass through six developmental stages during the last larval stage. The cytoplasm of their sense cells suggests intensive synthesis of protein for cellular metabolism and intercytoplasmic exchange of material via glial evaginations. Ultrahistochemical tests demonstrated acid phosphatase in the lysosomes as well as in components of the Golgi apparatus. There was no significant change in the appearance of the sense cell cytoplasm, indicating a maintained functional state also during molting. The new cuticular apparatus is formed after apolysis by the three enveloping cells. Formation of the replacement hairs is initiated by a cytoplasmic outgro…
Two new African and Madagascan species of the genus Holochlora (Orthoptera: Tettigoniidae, Phaneropterinae)
2017
Two new species, Holochlora mauritiana and H. ingrischi from the island of Mauritius and Zimbabwe, respectively, are described. Along with a third species, H. biloba Stål, 1874 from Madagascar, they are the sole African representatives of the mostly Oriental genus Holochlora Stål, 1873, including ca. 60 taxa distributed from India to China. Preliminary hypotheses on biogeographical and evolutionary origin of Afro-Madagascan Holochlora species are shortly discussed.
Ant crickets and their secrets: Myrmecophilus acervorum is not always parthenogenetic (Insecta: Orthoptera: Myrmecophilidae)
2021
Abstract Previously considered as a thelytokous parthenogenetic species, the widespread ant cricket Myrmecophilus acervorum actually turns out to have a mixed reproductive system: our recent surveys in the central part of its distribution area has revealed the presence of both sexes. Detailed morphological and morphometric descriptions of the previously unknown males are here provided. New data on species distribution in south-eastern Europe are presented, including the first records of M. balcanicus in Bulgaria and of M. nonveilleri in Bulgaria and Hungary. Phylogenetic and phylogeographic analyses have revealed several haplotypes of M. acervorum in Europe, with six of them forming a parth…