Parasitic Phorid flies confirmed in Washington

The first Apocephalus borealis of the season emerged over the weekend from honey bees collected in the Lynnwood Washington area.  Larvae are still emerging as of today.

It is unknown if this native parasitoid is going to be a serious problem for beekeepers.  A. borealis is ordinarily a parasitoid of yellowjackets and bumble bees but, apparently, has just recently made the jump to the non-native honey bees as hosts.

The distribution of parasitized honey bees in Washington is unknown.

More information here: ZomBee watch

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