Insulalutzia Tanaka, 2003

The only species of subgenus Insulalutzia is distinguished from the species of subgenera Lutzia and Metalutzia as follows. ADULTS – Compound eyes contiguous above antennal pedicels, separated dorsally (distinction from subgenus Lutzia); maxillary palpus of males without conspicuous setae; proboscis entirely dark-scaled; prealar scales absent; wing entirely dark-scaled (distinction from subgenus Lutzia); tarsi without pale bands (distinction from subgenus Lutzia). MALE GENITALIA (distinctions from subgenus Lutzia) – Seta h of subapical lobe of gonocoxite not developed or differentiated; gonostylar claw borne at apex of gonostylus; paraproct with prominent basal lateral arm. LARVAE – Antenna more or less cylindrical, not narrowed beyond seta 1-A (distinction from subgenus Lutzia); seta 6-C inserted posterior to seta 5-C; seta 9-C inserted posterior to seta 8-C (distinction from subgenus Lutzia); seta 10-C inserted anterior to seta 9-C (distinction from subgenus Lutzia); seta 4-P normally single (distinction from subgenus Lutzia); seta 1-III,IV large, 0.5–1.0 length of segment (distinction from subgenus Metalutzia); seta 1-V large, 0.5–1.0 length of segment (distinction from subgenus Lutzia); comb comprised of 18–20 scales; siphon shorter than or at most as long as saddle, elements of seta 1-S much longer than diameter of siphon (distinction from subgenus Lutzia), pecten restricted to middle third of siphon, pecten spines closely spaced; ventral brush (seta 4-X) without precratal setae (distinction from subgenus Lutzia). PUPAE – Seta 1-III,IV single; seta 5-II inserted lateral of seta 4-II; seta 9-II–VI sharply pointed (distinction from Metalutzia); segment VIII with posterolateral corner not produced. See genus Lutzia.