Megachile ericetorum found in the U.S. .... and apparently established in North America
- All:Below is a message from Bernhard Jacobi who discovered M. ericetorum in Rochester, NY via pictures taken and posted to Flickr by Gary Stafford. Original paper attached.I am only aware of the original finding of one specimen of M. ericetorum in nearby Ontario a few years back as published by Cory Sheffield et al. Have there been any other recent records? We should expect this species to spread to the South as is illustrated in the map below from DL.Here is what Cory wrote in terms of determining this species:Here is what we have in DL
Diagnosis. The female of M. ericetorum can be recognized by the combination of 4-dentate mandibles which lack cutting edges, and clypeus with apical edge with a small median tubercle. They are most similar to M. montivaga. Females of M. montivaga lack the median tubercle on the clypeus, and have 5-dentate mandibles. The male of M. ericetorum can be recognized by the combination of combination of simple, yellow front tarsi, 3-dentate mandibles lacking lower process, T5 with a white apical fascia, and T6 without white tomentum above to carina. They are most similar to M. coquilletti. Males of M. coquilletti are typically smaller, and have T6 with the surface above carina with white tomentum dense and conspicuous medially, concealing most of the surface beneath.FemalesM. ericetorum vs M. montevagaM. ericetorum - Rim of clypeus with a small central finger or tooth like projection - Hairs on S6 uniformly dense - Pits on clypeus about the same density throughout maybe slightly less in the center but not dramatically so - Mandible elongated with only the first 2 teeth very obvious, the 3rd tooth absent or only a vaguely convex area - A recent introduction and still very uncommonM. montivaga - Rim of clypeus straight or very slightly emarginate or concave - S6 with a large bare area toward the rim - Clypeus with central area lacking pits or much sparser than the sides - Mandible less elongate and with 4 clear teethMales apparently resolve without any special characters in DLBe on the watch.sam---------- Forwarded message ----------
From: Bernhard Jacobi <h.b.jacobi@...>
Date: Thu, Jan 10, 2013 at 2:10 PM
Subject: bee new to U.S.
To: Sam Droege <sdroege@...>Hi Sam,find enclosed a pdf of a short scientific note I recently published together with Gary Stafford on a Eurasian bee species apparently new to U.S.A.You may further distribute the pdf to others of the trade that may be interested, e.g. for purposes of taking specimen (contact Gary) or doing some in-depth study on this new bee.Best wishes!Bernhard(aka terraincognita96 on Flickr)--Bees are Not Optional