Mesoneura shishikuensis Togashi, 1965

Kumar, Deepthi S & Sankar, Manimuthu M, 2023, Taxonomic Notes and New Distribution and Host Plant Records for Sawflies and Woodwasps (Hymenoptera, Symphyta) of Japan VIII, Bulletin of the National Museum of Nature and Science. Series A, Zoology 49 (2), pp. 57-74 : 61-62

Mesoneura shishikuensis Togashi, 1965

Japanese name: Kimadara-habachi

( Fig. 5 )

Larva. Probably final feeding-instar ( Fig. 5A–B ): 20 mm long, light green; head with black band laterally and small gray spots on frons; mandible brown yellow, apically black; cervical sclerite black; thoracic legs with coxae laterobasally slightly darkened and claws black; abdominal segment 3 with 6 annulets; proleg present on abdominal segment 2–8; proleg on segment 8 much smaller than proleg on segment 7; caudal protuberance absent. Mature larva (probably final instar) ( Fig. 5C ): As above, but dark markings on head paler.

Material examined. HONSHU: Tochigi Pref.: 1 $, Nakagawa , 36°45′N 140°9′E, coll. larva on Quercus serrata 15. V. 2019, mat. 17. V., em. 2. IV. 2020, S. Ibuki ( Fig. 5 ) .

Host plants. Fagaceae : Quercus crispula Blume (Hara et al., 2018), Q. serrata Murray (new record).

Remarks. The larva of this species is similar to the larva of Mesoneura opaca (Fabricius, 1775) from Europe, but the former has the head with dark markings while the latter has the head without markings (fig. 69 in Prous et al., 2019; p. 413, fig. 1 left and right in Macek et al., 2020).

Figures

Fig. 5.ɹMesoneura shishikuensis. A–B, Probably final feeding-instar larva, 20mm long, 15. V. 2019; C, mature (probably final instar) larva, 17. V. 2019. Photographed by Ibuki.