Satonius kurosawai ( Satô, 1982 )

Hájek, Jiří & Fikáček, Martin, 2008, A review of the genus Satonius (Coleoptera: Myxophaga: Torridincolidae): taxonomic revision, larval morphology, notes on wing polymorphism, and phylogenetic implications, Acta Entomologica Musei Nationalis Pragae 48 (2), pp. 655-676 : 672

Satonius kurosawai ( Satô, 1982)

( Figs. 18-19 , 27, 29, 31 )

Material examined. 10 larvae of ultimate instar, 6 larvae of penultimate instar ( NMPC): JAPAN: HONSHŪ: Aichi Pref., Houraji-ko, 4.v.1997, M. Satô leg.

Diagnosis. Generally similar to larva of S. stysi sp. nov. in most external characters, except for measurements, chaetotaxic characters mentioned below, and morphological characters summarized in Table 3.

Measurements. Head width: 0.37 mm (penultimate instar), 0.43 mm (ultimate instar); body length: 1.12-1.25 mm (penultimate instar), 1.42-1.55 mm (ultimate instar); maximum body width: 0.72-0.76 mm (penultimate instar), 0.95-1.02 mm (ultimate instar).

Chaetotaxy. Identical in both species on most body parts with the following exceptions. Maxilla: apex of mala with one fixed lateral tooth and three stout spiniform setae and four thinner and longer trichoid setae mesally ( Fig. 18 ). Legs: coxa with one additional short hairlike seta basally. Abdomen: lateral lobes of abdominal nodes generally with lower number of setae (see Table 2); at least some setae on these lobes bifid at apex in ultimate instar ( Fig. 29 ), all setae simple in penultimate instar. Urogomphi ( Fig. 31 ): bearing 8-10 long trichoid setae, one fine and short basal seta, and one spiniform seta at apex. For detailed description see BEUTEL (1998).

Figures

Figs. 11-19. Larvae of Satonius Endrödy-Younga, 1997. 11-17 – S. stysi sp. nov., penultimate instar; 18-19 – S. kurosawai (Satô, 1982), ultimate instar. 11 – right antenna, dorsal view; 12 – head, dorsal view; 13 – labrum, dorsal view; 14 – labrum, ventral view (epipharynx); 15 – maxilla, ventral view; 16 – maxilla, dorsal view; 17-18 – apical portion of mala; 19 – detail of maxillary palpus and basolateral portion of mala, ventral view.

Figs. 26-31. Larvae of Satonius Endrödy-Younga, 1997. 26, 28, 30 – S. stysi sp. nov., penultimate instar; 27, 29, 31 – S. kurosawai (Satô, 1982), ultimate instar. 26-27 – abdominal segments VII-X, setae of urogomphi omitted; 28-29 – shape of setae of lateral lobes of abdominal segments I-VIII; 30-31 – right urogomphus, ventral view.