Asadeteva christophi U. Aspöck & H. Aspöck, 2024

Asadeteva christophi U. Aspöck & H. Aspöck , sp. nov.

( Figs 1–2 View Fig View Fig )

Material examined. HoLoTYPE: J, T 00/18A, Thailand, Province of Mae Hong Son, mountains SE Pai, valley of the Huai Mae Ya, road to Ban Wat Chan , 19°15′31″ N / 98°29′01″ E, 700 m, 20.IV.2000, H. & U. Aspöck leg. ( NHMW). GoogleMaps

Diagnosis. The new species is characterized by slightly falcate forewing with indistinct pterostigma, broad shell- -shaped male tergum 9 + ectoprocts, male gonocoxites 9 with strongly recurved, narrowly hook-like apex, and male fused gonocoxites 11 (= gonarcus) rod-shaped at base.

Description. Male. Forewing length 7.15 mm, hindwing length 6.46 mm.

Head yellow. Compound eyes blackish brown.Antennae yellow with yellowish setae; scape long and thick, as long as proximal four flagellomeres.

Thorax yellowish brown; pronotum pale brown, with blackish brown spots laterally. Legs yellow, tibiae with dark brown spots ventrally, each tarsomere dark on tip. Forewing with slightly falcate apex, slightly smoky brown, with dark brown markings on branching points of most longitudinal veins; pterostigma not distinct. Longitudinal veins pale yellow, interrupted by many brownish spots; crossveins brown. Hindwing much paler than forewing, with brown markings on branching points of some longitudinal veins.

Longitudinal veins pale yellow, crossveins brown.

Abdomen brown.

Tergum 9 + ectoprocts in lateral view nearly shell-shaped but tapering posteroventrally into digitiform process, which bears tuft of spinous setae ( Figs 1B View Fig , 2A View Fig ). Trichobothria reduced. Sternum 9 shorter than sternum 8 ( Figs 1B View Fig , 2A View Fig ). Gonocoxites 9 in lateral view rod-shaped in basal half and expanded as subtriangular plate in distal half, covered densely with short setae, posteriorly slightly protruding ( Fig. 2A View Fig ); in ventral view distal plate slenderly narrowed, distally with strongly recurved, narrowly hook-like apex, which is not visible in lateral view ( Figs 1 View Fig , 2 View Fig ). Complex of fused gonocoxites, gonapophyses and gonostyli 10 with basal sclerite, which extends laterally and posteriorly in middle in ventral view, has pair of broad leaf-like lobes laterally, and short bow formed by bundled bristles that extends anteriorly to segment 8 ( Figs 1 View Fig , 2 View Fig ). Fused gonocoxites 11 (= gonarcus) arched, rod-like at base, in lateral view posteriorly slightly expanded as slenderly semilunar plate ( Figs 1 View Fig , 2 View Fig ). Hypandrium internum subtriangular ( Figs 1 View Fig , 2 View Fig ).

Differential diagnosis. Among all known species of Asadeteva , A. christophi sp. nov. can be distinguished from A. thailandica sp. nov. by slightly falcate forewing with indistinct pterostigma ( Fig. 1A View Fig ), broad shell-shaped male tergum 9 + ectoprocts, male gonocoxites 9 with strongly recurved, narrowly hook-like apex in ventral view ( Figs 2B, 2E View Fig ). In contrast, in A. thailandica sp. nov., the forewing is narrowly falcate with distinctly reddish-brown pterostigma ( Fig. 3A View Fig ), and the male genitalia are characterized by narrowly subquadrate male tergum 9 + ectoprocts and gonocoxites 9 feebly protruding distally ( Figs 4A, 4B View Fig ).

Etymology. The species is cordially and sadly dedicated to our son, Christoph Aspöck (6 March 1965 – 25 February 2022). He has accompanied us on many expeditions and field trips and has significantly contributed to the success.

Distribution. Thailand (Mae Hong Son).