Episernus
Encyclopedia
Episernus is a genus of beetle
ranging in Holarctic
, of western distribution in North America, including the Palearctic
and the Nearctic
. Episernus is similar to Ernobius
, but the side margin of the pronotum in the anterior part is effaced, and the antennae are 10-segmented. They consume conifers. For males, the body is more slender. In females, the antennae are shorter.
Beetle
Coleoptera is an order of insects commonly called beetles. The word "coleoptera" is from the Greek , koleos, "sheath"; and , pteron, "wing", thus "sheathed wing". Coleoptera contains more species than any other order, constituting almost 25% of all known life-forms...
ranging in Holarctic
Holarctic
The Holarctic ecozone refers to the habitats found throughout the northern continents of the world as a whole. This region is divided into the Palearctic, consisting of Northern Africa and all of Eurasia, with the exception of Southeast Asia and the Indian subcontinent, and the Nearctic,...
, of western distribution in North America, including the Palearctic
Palearctic
The Palearctic or Palaearctic is one of the eight ecozones dividing the Earth's surface.Physically, the Palearctic is the largest ecozone...
and the Nearctic
Nearctic
The Nearctic is one of the eight terrestrial ecozones dividing the Earth's land surface.The Nearctic ecozone covers most of North America, including Greenland and the highlands of Mexico...
. Episernus is similar to Ernobius
Ernobius
Ernobius is a genus of beetle native to the Afro-tropical region, the Australian region, the Palearctic , the Near East, the Nearctic and North Africa.-External links:*...
, but the side margin of the pronotum in the anterior part is effaced, and the antennae are 10-segmented. They consume conifers. For males, the body is more slender. In females, the antennae are shorter.