Key to Hemipenthes species

The Bee Flies (Diptera: Bombyliidae) of Ontario, with a Key to the Species of Eastern Canada
CJAI 06 March 06, 2008
doi: 10.3752/cjai.2008.06

Joel H. Kits* , Stephen A. Marshall* , and Neal L. Evenhuis**

* Department of Environmental Biology, University of Guelph, 50 Stone
Rd. E., Guelph, Ontario N1G 2W1, Canada jkits@uoguelph.ca, samarsha@uoguelph.ca

** Department of Natural Sciences, Bishop Museum, 1525 Bernice Street,
Honolulu, Hawaii 96817, USA neale@bishopmuseum.org

Known larval hosts include both Lepidoptera and diprionid sawflies and the tachinid flies and ichneumonoid wasps parasitizing them.

1.	Brown part of wing crossing apex of cell r1 (Figure 65a)	sinuosa
	5-13 mm. South of the Canadian Shield in Ontario (widespread in southern Canada through central and eastern U.S.). Larvae recorded as parasitoids of Neodiprion sp. (pine sawflies). Adults fly late May – Sept.
-	Brown part of wing not crossing apex of cell r1 (Figure 65b-e)	2

2.	Up to ⅔ of cell a2 brown, hind margin of cell clear (Figure 65c-e)	3
-	More than ¾ of cell a2, including hind margin, brown (Figure 65b)	morio
	6-13 mm. Widespread in Ontario north to Thunder Bay District (widespread in Holarctic including central and southern Asia; also possibly Thailand). Larvae recorded as hyperparasitoids on tachinids and ichneumonids. Adults fly late May – Aug.

3.	Anterior and lateral edges of mesoscutum with yellow pile; whitish tomentum forming a crossband on abdominal tergite 4 (Figure 42a)	cf. catulina
	5-9 mm. Northern Ontario south to Sault Ste. Marie (also western and northern U.S.). Adults fly June – July. We are uncertain if this northeastern population is conspecific with true H. catulina, but in the absence of a generic revision we are treating it under this name.
-	Lateral edges of mesoscutum with mixed black and gold pile; abdominal tomentum mostly black with scattered gold, not forming bands (Figure 42b)	webberi
	6-10 mm. Southern Ontario north to Powassan, St. Joseph Is. (southeastern Canada and central to northeastern U.S.). Adults fly June – July.