Arge pagana

Arge pagana
Arge pagana. Dorsal view
Side view
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Suborder:	Symphyta
Family:	Argidae
Genus:	Arge
Species:	A. pagana
Binomial name
Arge pagana (Panzer, 1798)
Synonyms
Arge rosae[1] Tenthredo pagana Panzer, 1798

Arge pagana is a sawfly in the family Argidae. It is known by the name "large rose sawfly" although the related species Arge ochropus is also known by this name.

• Arge pagana pagana (Panzer, 1798) ^[2]
• Arge pagana stephensii (Leach, 1817) ^[3] (British Isles)

This species can be found in the Palearctic realm.^[4]

Arge pagana can reach a length of about 1 cm. Wings and veins on the wings are black, often with blue metallic sheen. Pronotum and legs are also black. Its most conspicuous feature is a large rounded yellow abdomen. It has a black head and thorax and the legs are largely black. Larvae reach about 25 mm and are pale green with black dots and a yellow head.^[5]

The eggs are laid on roses. Larvae appear in early summer and reach full size by the end of July.^[5] The larvae are gregarious and live in colonies feeding on rose leaves (Rosa species, Rosa acicularis).^[6]

The pupal period is very short. Adults feed on nectar and pollen from Tanacetum vulgare and Heracleum sphondylium. During the warmer years there may be two or, rarely, three generations.

• 
  A. p. stephensii, Oxfordshire. laying eggs, the ovipositor can just be seen between the rear legs.
• 
  Scar on the shoot of rose after the hatching of eggs
• 
  Larva

• A.Ramel LES TENTHREDES (in French)
• la TENTHRÈDE du ROSIER (Arge pagana) (in French)

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