What type of species is a Boreo-arctic Montane species found in the most northerly of the abstract five major circles of latitude as shown on maps of the Earth?
Arctic Circle The Arctic Circle is the most northerly of the abstract five major circles of latitude as shown on maps of the Earth. It marks the northernmost point at which the noon sun is just visible on the northern winter solstice and the southernmost point at which the midnight sun is just visible on the northern summer solstice. The region north of this circle is known as the Arctic, and the zone just to the south is called the Northern Temperate Zone. North of the Arctic Circle, the sun is above the horizon for twenty-four continuous hours at least once per year (and therefore visible at midnight) and below the horizon for twenty-four continuous hours at least once per year (and therefore not visible at noon); this is also true within the equivalent polar circle in the Southern Hemisphere, the Antarctic Circle.
Bark beetle A bark beetle is one of about 220 genera with 6,000 species of beetles in the subfamily Scolytinae. Traditionally, this was considered a distinct family Scolytidae, but is now understood to be very specialized members of the "true weevil" family (Curculionidae). Well-known species are members of the type genus "Scolytus", namely the European elm bark beetle "S. multistriatus" and the large elm bark beetle "S. scolytus", which like the American elm bark beetle "Hylurgopinus rufipes", transmit Dutch elm disease fungi ("Ophiostoma"). The mountain pine beetle "Dendroctonus ponderosae", southern pine beetle "Dendroctonus frontalis", and their near relatives are major pests of conifer forests in North America. A similarly aggressive species in Europe is the spruce ips "Ips typographus". A tiny bark beetle, the coffee berry borer, "Hypothenemus hampei" is a major pest on coffee plantations around the world.