Thaumatographa tamdaoana, Heppner & Bae, 2025

Thaumatographa tamdaoana , new species

( Figs. 4 View FIGURES 1–4 , 8 View FIGURE 8 )

Type material. Holotype. [ VIETNAM] ♂, Tam Dao [Village] (930m), 8 Jul 2003, Y.S. Bae et al. (gen. slide JBH-4545; adult photos 15921) ( INUC/NIBR).

Diagnosis. This species is distinctive in the white marks of the forewing apex and the subapical bright orange-yellow bar, as well as for the straight horizontal orange-yellow line from the wing base to 1/3. The male genitalia have a very long thin uncus, and the hami are also long and thin, tapering from a bulbous base to a sickle-like acute apex; and the socii are long and thin. Viewed dorsally, this species has the labial palpi approximate to each other (see Fig. 4 View FIGURES 1–4 ), while in the other species the palpi are further apart ( Figs. 1–3 View FIGURES 1–4 ).

Description. Wing expanse: 12mm (n = 1).

Head ( Fig. 4 View FIGURES 1–4 ): brown-gray, with yellow laterally, but white on caudal eye margin and neck; antenna yellow and brown-gray, with amber venter, with long black ventral cilia in pairs; labial palpus mostly white, with yellow and brown-gray on basal segment, and apical segment with black laterally near apex; head venter white.

Thorax ( Fig. 4 View FIGURES 1–4 ): brown-gray, with yellow lateral line each side; tegula brown-gray with yellow margin distad; venter white; legs white with dark brown bar marks as in the other species.

Forewing ( Fig. 4 View FIGURES 1–4 ): black-brown, with median striae white and angled from dorsal margin toward apex; a straight light orange line along radius from base to 1/3, with a corresponding faint shorter pale white line on cubitus; costa with angled white marks from margin to radius, each bordered by black-brown and with orange between, the distad white mark more straight; wing apex with a large white wedge from costal margin to near termen and then sharply recurved back to near costa, margined by black-brown and bordered by orange; a large orange to orange-yellow curved wedge, widening from near costal margin toward termen; termen with thin orange line, interrupted below apex by a white black-margined fringe indentation; tornal quarter with series of white spots and short striae, all curved toward apex, and one larger yellowing-spot on cubitus below end of cell; subtornal orange area with four black spots, with basal two larger; fringe black-brown, with white along apex and inside termen invagination; venter dark brown, with very dull repetition of the dorsal markings, but bright orange-yellow and white dorsal marks repeated in apex and termen.

Hindwing ( Fig. 4 View FIGURES 1–4 ): dark brown with orange suffused cell area from midwing to near wing base; termen with orange line from apex to tornus; anal sector lightly pale brown; costal sector white; venter dark brown, with orange-yellow on termen and apex, and pale yellow thin line at end of cell.

Abdomen: lustrous bronze-brown; venter lustrous white, but sequentially less white on sternites 3–6; genital tufts brown with white ventrally and laterally; pregential segment ( Fig. 8c View FIGURE 8 ), truncated, with medial U-shaped invagination; coremata long, from deep lateral pouches.

Male genitalia ( Fig. 8 View FIGURE 8 ): tegumen globular, rounded; uncus ( Fig. 8b View FIGURE 8 ), very long (ca. 2/3 valval length), sclerotic and thin, from bulbous base quickly thinned and uniform to acute-round apex, overall decumbent and evenly recurved after basal bend; hami ( Fig. 8b View FIGURE 8 ), long and thin sclerotic, from wide base and tapering distally gradually to sickle-like acute point; socii ( Fig. 8b View FIGURE 8 ), long and thin, moderately setose; gnathos ( Fig. 8b View FIGURE 8 ), with short lateral flattened arms, convergent medially to knobbed ends; transtilla ( Fig. 8b View FIGURE 8 ), a thin band, somewhat arched dorsally; juxta ( Fig. 8b View FIGURE 8 ), an ovate plate (slightly concave caudally), with dorsal margin truncated and slightly concave, laterally projected narrowly into anellus ring (partially as sclerotized band; aedeagus ( Fig. 8a View FIGURE 8 ), short, tubular, with short caudal projection and distally blunt; phallobase obsolete; cornutus a long, thin flechette; vesica spinose; ductus ejaculatorius long, with elongate-globular hood; valva ( Fig. 8 View FIGURE 8 ), elongate, oblong with rounded termen, overall setose; sacculus slightly bulging beyond base; vinculum U-shaped quadratic ( Fig. 8b View FIGURE 8 has the vinculum twisted out of position and dorsad instead of ventrad); saccus obsolete.

Female unknown.

Etymology. The species is named for the hill station, Tam Dao, now included also in Tam Dao N. P., Vinh Phuc Prov.

Biology. Unknown. Flight period: July. Habitat ( Fig. 11 View FIGURES 10–11 ) is montane subtropical forest ( Sterling et al. 2006).

Distribution. Known only from northern Vietnam.

Discussion. This species is among those species superficially resembling the generic type-species, T. zapyra from New Guinea, but the genitalia are very different. The most similar species by maculation is one from Thailand, Thaumatographa johnbradleyi ( Razowski, 2009) (n. comb., originally described in Hilarographa ), however, the genitalia are very different. These species form a different species-group from the previous species described herein, but all the Thaumatographa species need further study before species-groups can be assigned.