Rose Sawfly larvae – Arge pagana – Sagvespur – Rósaþéla – Sagvespur lirfur – Large rose sawfly – Arge Rosae – Dark-shouldered Rose Fusehorn – Argidi della Rosa – 葉蜂 – Fuse-horned sawflies – Hylotome du rosier – Avispa del rosal – Larve d’Arge – Rose Slugs – Roseslug – Rose Worm – Parassiti della Rosa – False caterpillar of rosebush – Розанный пилильщик – Falsa oruga del rosal – Rosenbürstenhornwespe – Argidae – Tetrastichus – Flugulirfur – Óværa – Meindýr – Rósaþélur að borða öll laufblöð af rósinni. There are actually two species referred to as the Large Rose Sawfly. Arge pagana is the common species, Arge ochropus is rarer. Arge pagana is up to 10mm, with an orange abdomen and black sides to the thorax. Because of the dark, tinted wings, which are kept over the abdomen, the orange colour may not always be clearly visible. The legs are mainly black as well, with some orange on the hind leg femur. Like all species in the Arge genus, the antennae have only 3 or 4 segments, with the end segment being very long. Reklaþéla – Amauronematus amentorum Broddsþéla – Arge berberidis Rósaþéla – Arge pagana Hindberjaþéla – Cladius brullei Birkiþéla – Craesus septentrionalis Rifsþéla – Nematus ribesii Staraþéla – Pachynematus vagus Birkiþéla – Scolioneura betuleti The only other orange bodied Arge with a dark intercostal on the wings is Arge ochropus and this species has ‘stripy socks’. Larvae of Arge ochropus and Arge pagana are tricky to separate, especially from photos. The best feature to check are the fine hairs on the head, which are dark in ochropus and pale in pagana. The black marking on the last dorsal segment can also be useful – this is a simple spot in pagana but more-or-less indented with a pale middle in ochropus. In the field the best way is to look for the egg scars on the main stem near where the larvae are feeding – two parallel rows in pagana and just a single row in ochropus. See more: https://www.naturespot.org.uk/species/large-rose-sawfly Arge pagana is mainly black above. Adults feed of nectar and pollen on Tanacetum vulgare, Angelica sylvestris and Heracleum sphondylium. This species has two generations a year. The females lay about 16–18 eggs on the rose stems. Larvae feed on the leaves of some species of the genus Rosa, for example Rosa canina, Rosa majalis and Rosa pimpinellifolia. See more: https://en.wikipedia.org/wiki/Arge_ochropus 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. The eggs are laid on roses. Larvae appear in early summer and reach full size by the end of July. The larvae are gregarious and live in colonies feeding on rose leaves (Rosa species, Rosa acicularis). See more: https://en.wikipedia.org/wiki/Arge_pagana Arge (14 species: berberidis, ciliaris, cyanocrocea, enodis, expansa, fuscipes, gracilicornis, melanochra, metallica, nigripes, ochropus, pagana, rustica, ustulata). Black or black and orange species, often with smoky wings or wing blotches below the fore wing stigma. Females have relatively short antennae lacking long hairs. The slimmer males have much longer flagella with conspicuous bristly hairs that can be longer than the width of the flagellum. In all four wings vein R1 and Rs meet (in contrast to Aprosthema and Sterictophora species where they do not meet). The caterpillar-like larvae feed on the foliage of broad-leaved trees and shrubs plus Rubus species. Several species are garden pests, notably A. pagana and A. berberidis. See more: https://www.flickr.com/photos/63075200@N07/collections/72157675349024818/ Unfortunately handheld, with such a macro and a minuscule the video is shaky and not always on focus.