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Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

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Genus Arge

Argid Sawfly - Arge humeralis Larva on rose bush - Arge ochropus sawfly - Arge humeralis Which *sawfly* is this, please? - Arge humeralis Arge ochropus - Rose Sawfly - Arge ochropus Arge ? - Arge Argidae, Poison Ivy Sawfly, lateral - Arge humeralis Unknown - Arge ochropus
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 Argidae (Argid Sawflies)
Genus Arge
Synonyms and other taxonomic changes
revision in(1)
Explanation of Names
Arge Schrank 1802
Numbers
10 spp. in our area(2), >200 spp. worldwide(1)
Size
adults up to 14 mm(1)
Identification
Forewing and hindwing with cell Rt closed at apex

Middle and hind tibiae with preapical spines

3rd antennal segment of male simple
Range
holarctic (to Colombia) & Afrotropical(1)
Season
spring to mid-summer(1)
Food
Larvae feed on foliage of various shrubs and trees. Host data compiled from various sources:
A. clavicornus -- Shadbush, Amelanchier
A. coccinea -- Sumac, Rhus
A. humeralis -- Poison Ivy, Toxicodendron radicans
A. pectoralis -- Hazelnut, Corylus, Birch, Betula
A. scapularis -- Elm, Ulmus
Remarks
our only representative of the subfam. Arginae which contains a total of 18 genera(3)