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How to Identify Common Insect Associates of the Southern Pine Beetle
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Histeridae


fig5.jpg (13570 bytes)
Figure 5
Histeridae: The histerids are black, shiny, hard-bodied beetles with short elytra. The posterior abdominal segments are exposed dorsally beyond the elytra.
  • Platysoma (Cylistix) cylindrica (Paykull) (figs. 4A, 5): P. cylindrica (4.3 mm) has a spiny front tibia and a pointed prosternum (fig. 4A).

 

  • P. (Cylistix) attenuata (LeConte) (figs. $a, 6): P. attenuata is similar to P. cylindrica but is smaller (3.1 mm) than P. cylindrica. Also, P. attenuata appears thinner when viewed dorsally (fig 6).
Figure 4a
Figure 4A

Figure 4b
Figure 4B

 

 

Figure 6
Figure 6

 

Figure 7
Figure 7

Figure 8
Figure 8

  • P. parallelum Say (figs. 4B, 7): P. parallelum (2.7-3.6 mm) can be distinguished from these first two species because it has a rounded prosternum (fig. 4B). In addition, its pronotum is short relative to the length of the elytra (fig. 7), and it lacks deep pits on the metasternal plate.
  • Plegaderus Erichson (fig. 8): Plegaderus is a tiny (1.5 mm), oval, shiny, black beetle. Plegaderus has short elytra and is punctate with a smooth band on the prothorax.
 
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