Search results for "InSe"

The central control of oriented locomotion in insects - towards a neurobiological model

2010

A neurobiological model for the higher control of oriented locomotion in insects is developed here. It is based on studies in a genetic model insect, the fruit fly Drosophila melangaster. Reference is made to other insects, where respective functions are not yet studied in Drosophila. Flies can walk swiftly with up to 16 steps per second, each leg, on almost any substrate and in any orientation to the gravity vector. To bring about this astounding maneuverability and agility the central complex within the insect brain derives directional commands for the leg coordination centers in the thoracic nervous system. Neuroanatomical information is taken into account with regard to the general flow…

Pre-release risk assessment of the egg-parasitoid Gryon pennsylvanicum for classical biological control of Leptoglossus occidentalis.

2013

Leptoglossus occidentalis Heidemann (Heteroptera: Coreidae) is a North American conifer seed pest that was accidentally introduced to Europe. In the Mediterranean area, it threatens the production of Pinus pinea Linna- eus seeds. The egg-parasitoid Gryon pennsylvanicum (Ashmead) (Hymenop- tera: Platygastridae), the main natural enemy in the native range of L. occidentalis, was imported from British Columbia to Italy. Pre-release risk assessments were made under quarantine conditions by no-choice tests conducted with na€ıve and experienced G. pennsylvanicum offering single eggs of target and non-target species for varying exposure times (1, 4, 48 h). G. pennsylvanicum successfully parasitize…

Rickettsiae of the spotted fever group in dog fleas (Ctenocephalides spp.) in Western Sicily

1989

Ecological Mysteries: is <i>Bacillus thuringiensis</i> a Real Insect Pathogen?

2012

Bacillus thuringiensis ( Bt ) can kill insects and multiply in their bodies, but it can also grow in semi-synthetic media; is found in environments were insects are absent; and has been reported to require midgut-associated bacteria for toxicity. We propose here a novel life cycle for Bt combining insect-based and insect-independent life cycles.

On Harvestmen from the Soutpansberg, South Africa, with Description of a New Species ofMonomontia(Arachnida: Opiliones)

2008

The harvestman fauna of the Western Soutpansberg was investigated during two collecting trips. Comments are made on the variability, ecology and remarkable morphological features of the collected material. Characters are displayed and differences to type series are highlighted. Monomontia neglecta sp. n. is described from material housed at the Natal Museum. Metabiantes leighi Pocock, 1902 is recorded for the first time for the Soutpansberg area. A species list is provided, listing all known records and the state of endemism. The relative species richness of the eastern Soutpansberg is discussed in comparison with the western area.

Predatory behavior in the genusLeptogenys: A comparative study

1997

We studied the predatory behavior of seven species of the genusLeptogenys from Mexico and Cameroon. The ants of this genus are armed with long, thin, curved mandibles articulated at the extreme corners of the anterior margin of the head, permitting them easily to seize oniscoid isopods, the obligate or the principal prey of mostLeptogenys species. Workers hunt these prey, which are able to roll themselves up, solitarily. Foraging behavior comprises sequences of up to eight activities. The prey can be seized by the body (rolled up or not), or alternatively by the edge of the shell, then turned over and stung on the ventral face. A relationship between the mandible size of the workers and the…

Additions to the Nepalese oribatid mite fauna, with description of two new species (Acari, Oribatida)

2013

An annotated checklist of identified oribatid mite taxa from Nepal is provided. It includes 45 species/subspecies, 38 genera and 31 families; 34 species/subspecies are recorded for the first time in Nepal. Two new species, Eremaeus anichkini n. sp. (Eremaeidae) and Ghilarovizetes longiporosus n. sp. (Ceratozetidae), are described from soil and litter. An identification key to all known species of the genus Ghilarovizetes is given.urn:lsid:zoobank.org:pub:BE27D886-1294-4E55-AD0B-25CDFC663D71

Description of Two New Species ofAnacharisDalman, 1823 (Hymenoptera: Figitidae, Anacharitinae) from the Afrotropical Region

2015

Two new species of Anacharis Dalman, 1823 from the Afrotropical Region are described: Anacharis afrotropica sp. n. and Anacharis rwenzori sp. n. Diagnostic characters and data about biology, distribution and affinities with other Anacharis species are given.

New species, records and synonymies of West Palaearctic Pamphaginae (Orthoptera: Caelifera: Pamphagidae)

2012

The author analyses the species of some West Palaearctic genera of Pamphaginae, namely Euryparyphes, Paraeuryparyphes, Glauia, Pseudoglauia, Glauvarovia, Prionosthenus, Lativertex, Ocnerosthenus, establishing the following synonymies: Euryparyphes olcesei (Bolivar 1907) = Euryparyphes bolivari (Stål 1876); Euryparyphes paraflexuosus La Greca 1993 = Euryparyphes flexuosus Uvarov 1927; Glauia durieui rubripes Morales Agacino & Descamps 1968 = Glauia durieui durieui (Bolivar 1878); Prionosthenus lebanicus Dirsh 1950 = Prionosthenus femoralis Werner 1938; Prionosthenus (Lativertex) Koçak & Kemal 2011 = Paranothrotes Mishchenko 1951. Further, the author confirms the synonymies: Euryparyphes vauc…

Vier Dekaden Weberknechtforschung mit dem 64. Band der ‚Tierwelt Deutschlands‘ – Rückblick, aktueller Stand und Ausblick

2021

A short history of the Opiliones volume in ‘Die Tierwelt Deutschlands’ published by Martens (1978) is presented. The area under consideration comprises Central Europe expanded by large parts of Scandinavia, the British Isles, non-Mediterranean France, Benelux, the complete Alps and in the south-east those parts of Romania and Croatia whose fauna was sufficiently well known. Additions and changes which appeared since 1978 are highlighted: new species discovered in this area, taxonomic changes, important distributional records, as well as changes of faunal composition due to human-mediated influences and climate change are addressed. Perspectives for further research concern faunal inventory …