Abstract: The costs and benefits of dispersal (short range, one-way travel) have been investigated comprehensively in many taxa. Many studies have explored the ability of immigrants and philopatric individuals to produce offspring (reproductive success), however, there is a lack of research on the mating success (ability to procure a mate) in invertebrates that disperse. This study compares the mating success of male forked fungus beetles ( Bolitotherus cornutus ) in a metapopulation at Mountain Lake Biological Station, Giles County , Virginia . This mark-recapture study included nocturnal and diurnal observations on the mating behavior of the beetles form June 3, 2005, to July 15, 2005. There was no difference in the survival of males that we transplanted into new sub-populations, and ones we did not. Standardized mating success (S) for each male was based on previously determined insemination probabilities by (Conner1988). There was no difference in mating success between transplanted and non-transplanted males. When we compared only the males with S>0 in the two groups, the non-transplants had significantly higher mating success. There were significantly more transplanted males than non-transplanted males. This may have been due to the manner in which the transplants were collected. These differences are consistent with similar studies on other species, suggesting that factors, such as better site quality or inbreeding avoidance encourage this species to disperse. Future work on B. cornutus should be completed to determine what resources it is attracted to, if any, and if it experiences inbreeding depression. These data can also be combined with Patrice Ludwig's data on the mating behavior of naturally dispersing males to determine if they endure a cost as they move between sub-populations.