Monitoring Entomofauna heathlands Bruges

The advent of citizen science, the free availability of information and literature, and even social media, have greatly advanced our knowledge on insect fauna in the Low Countries. However, this information is often dispersed and does not always end up being reported in entomological literature. With this paper we want to close this gap for Ichneumonidae, by listing 205 species and nineteen genera first reported in Belgium and the Netherlands. Furthermore, several remarks with more profound morphological and/or ecological relevance are added. For more obscure species like Diadegma cinnabaritor Aubert, 1970, Diphyus restitutor (Wesmael 1859), Ichneumon freyi Kriechbaumer, 1880, Javra opaca (Thomson, 1883), Lissonota pleuralis Brischke, 1880, Meloboris collector (Thunberg, 1824), Micromonodon tener (Kriechbaumer, 1893), Perilissus holmgreni Habermehl, 1925, Piogaster pillosator (Aubert, 1958), Spilothyrateles illuminatorius (Gravenhorst, 1820) and Vulgichneumon trifarius (Berthoumieu, 1892) we provide a more elaborate description and figures. New parasitic relations are mentioned for Acrodactyla degener (Haliday, 1839), Heterischnus debilis (Gravenhorst, 1829) and Nippocryptus vittatorius (Jurine, 1807). An appendix provides the reader with an overview of Ichneumonidae first reported since 2005 (in total 290 species), paving the way for future checklists. [SUBMISSION DATE: 2 May 2021]

In September 2020 a specimen of the Corylophidae Arthrolips fasciata (Erichson, 1842) was discovered in mushrooms on decaying beech in a garden in Sint-Denijs-Westrem. In October 2020 a second specimen of this species was discovered in Beisbroek Sint-Andries Bruges also on decaying beech. These are the first records of the species in Belgium. Hence, we expect more Belgian records of this species in the near future. A species list of the Corylophidae known to occur in Belgium is given. Samenvatting In september 2020 werd een specimen van de Corylophidae Arthrolips fasciata (Erichson, 1842) ontdekt in paddenstoelen op rottende beuk in een tuin in Sint-Denijs-Westrem. In oktober 2020 werd een tweede specimen van deze soort gevonden in Beisbroek, Sint-Andries Brugge ook op rottende beuk. Dit zijn de eerste waarnemingen van deze soort in België. We verwachten dan ook meer Belgische waarnemingen van deze soort in de nabije toekomst. Een lijst met alle in België voorkomende Corylophidae soorten wordt aangehaald. Résumé En septembre 2020, un spécimen de Arthrolips fasciata (Erichson, 1842) (Corylophidae) a été découvert dans des champignons associés à des hêtres en décomposition dans un jardin à Sint-Denijs-Westrem. En octobre 2020 un deuxième spécimen de cette espèce a été découvert à Beisbroek Sint-Andries Bruges aussi sur des hêtres en décomposition. Ce sont les premières données pour cette espèce en Belgique. Par conséquent, nous pouvons nous attendre à d'autres observations en Belgique dans un avenir proche. Une liste des espèces de Corylophidae connues pour être présentes en Belgique est donnée.

During a pitfall sampling campaign in some heathland relicts in the vicinity of the city of Bruges (West Flanders), the centipede Geophilus easoni Arthur et al., 2001 was found at several locations. These are the first records of this species in Belgium.

Recent European records of the rare carabid beetle Dyschirius semistriatus (Dejean, 1825) are presented for France, Belgium, The Netherlands and Spain. Additionally an overview of its distribution in Europe and Northern Africa is given, as well as details on phenology, ecology and habitat preference.

Asilidae were collected during 3 consecutive years in 4 restored heathland patches west of Bruges. In total 9 species were collected. The surprisingly rich Asilidae fauna found in these rather young heathlands in the northwest of Belgium is discussed and compared with other Asilidae communities elsewhere in Flanders. Comments are given on the different trapping methods used. White pan traps seem to be more efficient to collect many species of robberflies than yellow pan traps and pitfall traps. However also yellow pan traps can collect many specimens in absence of white pan traps.