Flat Bugs (family Aradidae) are fittingly named, being indeed the most compressed members of the true bug order Hemiptera. Among flat bugs, though, there are orders of flatness, and this Aneurus may be a candidate for flattest of all aradids. Thin as card stock, Aneurus can squeeze beneath the bark of dead trees to access the fungal threads upon which it feeds. This diet, unusual for a true bug, is achieved with another odd trait: coiled mouthparts, which unravel in tight quarters much easily compared to the straight beak typical of true bugs. Remarkably, many flat bugs also care for their young, a habit exhibited by few hemipteran families.
Dead trees of various species, each with their distinct fungal communities, support different flat bug species. This tough-looking Aneurus inconstans is apparently associated with fir trees.
Aradidae: Aneurinae: Aneurus inconstans
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