Abstract
Behavioral strategies and mechanisms by which some animals maintain monogamous mating systems are not well understood. Here, using the bark beetle Dendroctonus valens, we deciphered cues contributing in monogamy. Field and laboratory observations suggest the bark beetle commonly form permanent bonds. A second female was shown to perceive the resident's presence by physical contact and to form a separated gallery. During gallery constructing, females released acoustic signals and volatiles to attract males. When a male joined a female, the male emitted aggressive sounds and volatiles to deter other males. Thus, D. valens has evolved multifaceted mechanisms contributing to single pairings that confer benefits to both sexes (see pages 1285‐1297). Photo provided by Zhu‐Dong Liu.
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