Phoracantha semipunctata (Fabricius, 1775) en région toulousaine. Actualisation de son expansion et remarques sur P. recurva Newman, 1840 (Coleoptera, Cerambycidae)

Phoracantha semipunctata fait partie de la faune de France continentale depuis quelques décennies et poursuit son expansion. Nous le signalons pour la première fois en Haute-Garonne. Une liste des coléoptères observés sur Eucalyptus à Toulouse, quelques rappels sur la biologie du P. semipunctata et sur la présence en France du P. recurva sont donnés

Évaluation de la biodiversité entomologique des vieilles forêts de la Réserve de biosphère Luberon-Lure

Les auteurs donnent une liste de 350 coléoptères (espèces non saproxyliques incluses) déterminés dans le cadre d’un inventaire réalisé pour le Parc naturel régional du Lubéron en 2015, sur plusieurs forêts anciennes. Quelques espèces remarquables font l’objet de commentaires faunistique

Bilan des connaissances, inventaires 2016 et cartographie de cinq coléoptères saproxyliques d’intérêt communautaire dans les sites Natura 2000 de la région PACA : Stephanopachys linearis, Stephanopachys substriatus, Limoniscus violaceus, Osmoderma eremita et Rosalia alpina

Sept espèces de coléoptères saproxylophages inscrites à l'annexe 2 de la directive Habitats (DH2) sont connues avec certitude en région PACA. Une huitième a été signalée : Cucujus cinnaberinus (Cucujidae), dont une ancienne mention dans le secteur de Saint-Martin-Vésubie semble plausible (Brustel & Gouix, 2012

Contribution à la connaissance des Coléoptères saproxyliques des forêts pyrénéennes : 3ème note : la forêt de Hèches, Hautes-Pyrénées

L’amélioration de la connaissance des cortèges de Coléoptères saproxyliques présents dans les forêts gérées des Pyrénées est un préalable indispensable à leur conservation. Dans le cadre d’une étude menée sur la propriété du Groupement Forestier de Hèches, un inventaire des Coléoptères saproxyliques a été conduit en 2003 et 2004, au moyen de pièges et de chasse à vue. Une liste de 374 taxons (espèces non-saproxyliques incluses) a ainsi été établie. Quelques espèces rares, voire inattendues font l’objet de commentaires faunistiques. Cet inventaire offre par ailleurs l’opportunité de situer le massif forestier étudié dans une échelle de valeur biologique des forêts pyrénéennes en 5 classes

Evaluation of entomological biodiversity of old forests of the Luberon-Lure Biosphere Reserve

Les auteurs donnent une liste de 350 coléoptères (espèces non saproxyliques incluses) déterminés dans le cadre d’un inventaire réalisé pour le Parc naturel régional du Luberon en 2015, sur plusieurs forêts anciennes. Quelques espèces remarquables font l’objet de commentaires faunistiques.The authors give a check-list of 350 beetles species (including non saproxylic species ) collected in several old forest in the Luberon region in 2015. Records are listed as tables including some faunistic comments

Do species interactions prevent Limoniscus violaceus from living in suitable basal hollow trees?

The violet click beetle (Limoniscus violaceus) is an endangered beetle that is protected in Europe. Its conservation required better knowledge on its biology. Recently, a study revealed that the probability of occurrence of L. violaceus in hollows increases with increasing tree circumference at 30 cm above ground and with increasing hollow decay stage (Gouix et al., submitted). However, the model showed that it was easier to identify unoccupied hollows than to identify the occupied ones. As tree hollows harbour a ränge of associated and facultative species living within a relatively small habitat, we may suspect some species interactions (competition and/or predation) that prevent Limoniscus violaceus from occupying suitable basal hollow trees. We studied beetle and Spider assemblages emerging from 73 basal hollow trees located within a Single forest site of 3500 ha (in France). All trees were considered to be suitable for Limoniscus violaceus (i.e. trees with a circumference at 30 cm above ground greater than 235 cm and cavity at an advanced stage of decay). We used the probabilistic approach to test for statistically significant pair-wise patterns of species co-occurrence. In total, 4805 species pairs were analyzed and 9.6 % had non-random patterns. We detected very few negative co-occurrence patterns (19) compared with positive ones (444). Regarding Limoniscus violaceus, we highly linked to the presence of tree hollows in mature trees. Moreover, the interaction between saproxylic insects and hollows shows specialised interacting patterns that model the structure and stability of these saproxylic assemblages. The objective of this work is to evaluate how interacting patterns of saproxylic insect networks vary according to woodland sites. We selected three representative Mediterranean woodlands in the Park: one sclerophyllous oak woodland of Quercus rotundifolia; one mixed deciduous oak woodland of Quercus pyrenaica and Quercus faginea; and one ash riparian woodland of Fraxinus angustifolia. We considered 30, 30 and 27 tree hollows, respectively, which were covered with emergence traps. Our study lasted one year, during which traps were emptied monthly and pots were replaced. We selected Coleoptera and Syrphidae (Diptera) as study groups. They were sorted according to trophic guilds: xylophagous, saproxylophagous, saprophagous, xylomycetophagous and predators. We used Aninhado and Modular programmes to evaluate the network architecture, and bipartite for R programme to study interacting attributes in the hollow-saproxylic insect interaction in each woodland site. Saproxylic insect-hollow networks presented a significant nested pattern, which means that most of the interactions are established with the most generalist nodes/species at both trophic levels (in this case, the lower trophic level is composed of hollows and the higher trophic level is composed of insects). Not all studied forests showed the same level of connectance (proportion of possible links between trees and species), the deciduous oak woodland being the forest with the most densely interconnected network

Halyomorpha halys (Stål, 1855), la punaise diabolique en France, à Toulouse (Heteroptera ; Pentatomidae)

Halyomorpha halys (Stål, 1855), la punaise diabolique poursuit sa dispersion mondiale. Elle est ici signalée pour la première fois à Toulouse (France, Haute-Garonne) et dans sa banlieue où elle a été aperçue en 2015 et 2016. Cette punaise invasive, originaire d’Asie, est en expansion rapide en France ; elle peut menacer les arbres fruitiers et les potagers

First survey of darkling beetles (Coleoptera, Tenebrionidae) of Talassemtane National Park, Western Rif, Morocco

To contribute to the knowledge of beetles (Coleoptera) of the mountainous region of Morocco, Talassemtane National Park (Western Rif, Chefchaouen district, Morocco) was surveyed. This is an exceptional protected area of the Mediterranean Intercontinental Biosphere Reserve (RIBM). The inventory was made using different traps combined with active searching periodically during 2013 and 2014. Among numerous species belonging to various families, the darkling beetles (Tenebrionidae) represent one of the major groups, in terms of diversity and heritage value. Thirty five species were identified, two species are new records to Morocco, and two other species, which were hitherto only known by the type specimens, have been rediscovered

Insights about saproxylic biodiversity living in old-growth forests of French Pyrénées

The symposium will span over four days, including a one day field trip. Keynote addresses will introduce morning sessions followed by parallel conference sessions. Scientific poster sessions, held in the late afternoon, will be combined with a cocktail buffet. A banquet will take place on Wednesday night. All events will be held at the Rouyn-Noranda Congress Center

Bois mort, micro-habitats et cie : Quels déterminants locaux pour les coléoptères saproxyliques

Bois mort, micro-habitats et cie : Quels déterminants locaux pour les coléoptères saproxylique