Macrophya montana (Scopoli, 1763)

Macek, Jan, 2012, About Macrophya parvula and larvae of several Central European Macrophya (Hymenoptera: Tenthredinidae), Zootaxa 3487, pp. 65-76 : 70

Macrophya montana (Scopoli, 1763)

( Figs. 6 , 12 , 17 )

Material examined. Bohemia centr.: Milovice (5755), 11.ix.2004, 5 larvae on Rubus fruticosus ; Lipovka NR (5854), 25.ix.2005, 8 larvae on Rubus fruticosus ; Karlštejn NNR (6051), 27.viii.2010, 4 larvae on Rubus fruticosus .

Notes on identification. The larva was described by Lorenz & Kraus (1957). The last instar larva is distinguished from the very similar larva of M. rufipes by the narrow, simple dorsal longitudinal dark stripe. Moreover, it is a silvicolous species occurring in deciduous or mixed forests with Rubus ground layer, in contrast to the xerophilous M. rufipes which prefers open shrubby grasslands.

Discussion. Benson (1952) first mentioned Rubus caesius as the larval food plant. I collected the larvae only on Rubus fruticosus in the shrub layer of deciduous and mixed forests.

Figures

FIGURES 4 – 6. Macrophya Dahlbom, 1835, larvae: 4 — M. rufipes (Linné, 1758): a—last instar (lateral view); b—last instar (dorsal view). 5 — M. militaris (Klug, 1814): a—last instar (lateral view); b—last instar (dorsal view). 6 — M. montana (Scopoli, 1763): a—last instar (lateral view); b – last instar (dorsal view). Scale: 10 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.