Revision of the Micronoctuidae (Lepidoptera: Noctuoidea) Part 3, Taxonomy of the Tactusinae FIBIGER, MICHAEL Zootaxa 2010 2010-08-31 2583 1 1 119 B73F9 Fibiger Fibiger 2010 [151,433,1826,1852] Insecta Erebidae Tactusa GBIF Animalia Lepidoptera 28 29 Arthropoda species biartus sp. nov.  ( Plate 3, figure 7 (imago), 8 (wing preparations); male genit. plate 13, figure 5)   Material examined.  Holotype: male, ThailandNW, Chiang Mai, Doi Suthep-Pui Nat. Park, San K,  1540 m,  22.iv.–6.v.1994, leg. I.J. Kitching et al., BMNH(E) 1994-97, wing prep. 3198 & genit. prep. 3403 M. Fibiger, coll. BMNH.   Diagnosis. Imago (external).Wingspan: 11 mm. Wing venation: in both wings, typical for Micronoctuidae(see plate 3, fig. 8). Forewing: relatively short and narrow; ground colour yellowish, with basal-costal patch and dorsomedial, triangular patch; yellowish between basal and antemedial lines, and between triangular patch and subterminal line; subterminal and terminal areas, including fringes, blackish brown, except for beige costal patch (apo.). Crosslines: subterminal line indicated, white; terminal line weakly marked. Reniform stigma: invisible (apo.). Hindwing: whitish, with indistinct discal spot. Underside: unicolorous grey. Abdomen: whitish with black crest dorsally on first segment.  Male genitalia.Tegumen: relatively strongly built. Vinculum: even more strongly built. Saccus: short; strongly built, V shaped. Fultura superior: membranous. Valvae: slightly asymmetrical, one on right broader. Ampulla: forming a cross with axis of valva; prominently asymmetrical; slightly upturned; broadest by valva; arms relatively broad, dorsal arm shorter, broader; apically with small, stout spines, and ventral arm longer, narrower, tapered (apo.). Digitus: absent (apo.). Juxta and anellus plate: slightly asymmetrical, fused, constricted medially (apo.). Phallus: strongly enlarged by ductus ejaculatorius, tapered from middle, and distally forming a long, narrow, curved, smoothly upturned cylinder. Vesica: unarmed.  Female genitalia.Unknown.  Differential diagnosis.Given under  T. artus.   Distribution.  T. biartusknown only from N. Thailand. 1994-04-22 1994-05-06 1994-04-22 BMNH San K & I. J. Kitching & M. Fibiger Thailand 1540 Doi Suthep-Pui Nat. Park 28 29 1 Chiang Mai holotype