Macrophya annulata (Geoffroy, 1785)

Macek, Jan, 2012, About Macrophya parvula and larvae of several Central European Macrophya (Hymenoptera: Tenthredinidae), Zootaxa 3487, pp. 65-76 : 68-69

Macrophya annulata (Geoffroy, 1785)

( Figs. 3 , 9 , 16 )

Material examined. Bohemia centr.: Hradčany env.: Báň NR (5857), 8.ix.2005, 6 larvae on Rosa canina ; Knĕžičky NNR (5857), 20.vii.2005, 2 larvae on Rosa canina ; Karlštejn NNR (6051), 3.viii.2008, 4 larvae on Rosa canina .

Notes on identification. The larva was described by Zirngiebel (1940) and by Lorenz & Kraus (1957). The last instar larva is easily distinguished from the other similar looking Macrophya larvae by a combination of characters as follows: the shape of body is rather stream-lined, tapering from the thorax towards the end of the abdomen; head with a black M-like macula fused with a black neck spot; surface sculpture granulose, all annulets covered with rows of conical tubercles (an exclusive character not occurring in the other Macrophya larvae).

Discussion. Taeger et al. (1998) listed various food plants, but only Rosa was confirmed as a natural one. In captivity Rubus and Potentilla reptans were also accepted. The other foodplant mentioned, Origanum , listed by Zirngiebl (1940), was not accepted by larvae and therefore this plant should be removed from the food plant list.

Figures

FIGURES 1 – 3. Macrophya Dahlbom, 1835, larvae: 1 — M. blanda (Fabricius, 1775): a—early instar (dorsal view); b—last instar (dorsal view); c—last instar (lateral view). 2 — M. diversipes (Schrank, 1782): a—last instar (dorsolateral view); b—last instar (lateral view); c—last instar (dorsal view). 3 — M. annulata (Geoffroy, 1785): a—last instar (lateral view); b—last instar (dorsal view). Scale: for last instar larva: 10 mm.; for early instar larva: 5 mm.

FIGURES 7 – 12. Macrophya Dahlbom, 1835, head of larvae (frontal view): 7 — M. blanda (Fabricius, 1775); 8 — M. diversipes (Schrank, 1782); 9 — M. annulata (Geoffroy, 1785); 10 — M. rufipes (Linné, 1758); 11 — M. militaris (Klug, 1814); 12 — M. montana (Scopoli, 1763). Scale: 2 mm.

FIGURES 13 – 17. Macrophya Dahlbom, 1835, the cuticular surface sculpture of the third abdominal segment of larvae (lateral view); the white numbers indicate the order of the annulets of the abdominal segments (a—mounted larva from alcohol, b—living larva): 13 — M. blanda (Fabricius, 1775); 14 — M. diversipes (Schrank, 1782); 15 — M. rufipes (Linné, 1758); 16 — M. annulata (Geoffroy, 1785); 17 — M. montana (Scopoli, 1763). Scale: 1.5 mm.