Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Genus Phylloecus

Which wasp, fly, or sawfly is this, please? - Phylloecus trimaculatus Wasp - Phylloecus trimaculatus - female Stem Sawfly - Phylloecus cowichanus - female White-spot Sawfly - Phylloecus trimaculatus long thin black wasp - Phylloecus trimaculatus Hartigia trimaculata - Phylloecus trimaculatus Hartigia trimaculata - Phylloecus trimaculatus Hartigia?  - Phylloecus trimaculatus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Symphyta" - Sawflies, Horntails, and Wood Wasps)
Family Cephidae (Stem Sawflies)
Tribe Hartigiini
Genus Phylloecus
Synonyms and other taxonomic changes
Hartigia Schiødte, 1838
Explanation of Names
Phylloecus Newman, 1838
Numbers
5 spp. in our area, 6 in North America(1)
1. Phylloecus bicinctus: northeastern (MB, ON, QC; NY, PA)
2. Phylloecus cowichanus: northwestern (BC; OR, WA)
3. Phylloecus fasciatus (=cressoni): western (CA, MT, NV, OR)
4. Phylloecus riesi: northwestern (BC; OR, WA)
5. Phylloecus trimaculatus: eastern (NB & QC south to FL, west to LA, OK, KS, IA, & MN) and ID
Identification
Key to spp. by Smith (1986).(1)

1. P. bicinctus: antennae black; body black; legs brown to black; abdomen with pale bands on segments 4 and 6; wings hyaline to lightly infuscated
2. P. cowichanus: antennae black; body black; legs with femora black, tibiae and tarsi reddish; abdomen with T3-4 orange; wings lightly infuscated
3. P. fasciatus: antennae yellow-marked; body black, often with scutellum yellow; legs with femora black, tibiae and tarsi yellowish; abdomen with thick yellow-and-black banding with segment 5 black; wings yellowish-orange
4. P. riesi: antennae black; body and legs almost entirely black; abdomen with thin pale bands on segments 3, 4, and 6; wings hyaline to lightly infuscated
5. P. trimaculatus: antennae black; body and legs almost entirely black; abdomen with large pale spot each side of T4; wings blackish
Range
holarctic; in NA, transcontinental, Canada to Mexico(1)
Food
hosts: Rosa, Rubus(1)
Works Cited
1.The berry and rose stem-borers of the genus Hartigia in North America (Hymenoptera: Cephidae)
Smith D.R. 1986. Trans. Am. Ent. Soc. 112: 129-145.