Trehalose-metabolism

Guides

• Psylliodes

  flea beetles

  Psylliodes is a large cosmopolitan genus of flea beetles comprising approximately 200 described species worldwide. Members are characterized by enlarged hind femora adapted for jumping, a trait shared with other Alticini. Approximately half of all species are specialized feeders on Brassicaceae, with the remainder associated with roughly 24 other plant families. Several species are economically significant agricultural pests, including the cabbage stem flea beetle (P. chrysocephala) and potato flea beetle (P. affinis). The genus includes rare endemic species such as the Lundy Cabbage Flea Beetle (P. luridipennis), a globally Critically Endangered species restricted to a single island off the coast of England.

  flea-beetleBrassicaceaeagricultural-pestendemicLundy-Islandaestivationtrehalose-metabolismherbivoryleaf-minerChrysomelidaeAlticinicosmopolitanoilseed-rapebiological-control

• Psylliodes chrysocephala

  cabbage-stem flea beetle, cabbage stem flea beetle

  Psylliodes chrysocephala, the cabbage-stem flea beetle, is a small flea beetle native to the Western Palaearctic and introduced to Canada. It is a major agricultural pest of winter oilseed rape (Brassica napus) in northern Europe, with adults feeding on leaves and larvae mining within petioles and stems. The species exhibits an obligatory summer aestivation period to survive heat and desiccation stress, with complex physiological and genetic mechanisms regulating this dormancy. Management has become increasingly difficult due to neonicotinoid bans and rising pyrethroid resistance.

  agricultural-pestaestivationBrassicaceae-specialistoilseed-rape-pestneonicotinoid-resistanceintegrated-pest-managementtrehalose-metabolismmicroRNA-regulation