Diagnosis. This species is distinguished from congeners by the following combination of characters: Face slightly projected anteriorly, wing mostly brown infuscate but with several white spots, especially over crossveins dm­cu and r­m.

Description. Coloration and vestiture: Frons mostly dark brown, weakly shiny, moderately microtomentose with microtomentum continued to bases of vertical setae, with small, lunate area immediately lateral of ocellar tubercle bare, shiny; ocellar tubercle moderately microtomentose; anterior margin of frons very slightly lighter in color, brown. Antenna brown, appearing darker from some angles of view. Face brown, with sparsely white microtomentose stripe at ventral margin much weaker than genal stripe. Palpus brown. Thorax uniformly dark brown, sparsely microtomentose, partially shiny; dorsal portion of anepisternum shinier. Wing (Fig. 15) maculate, mostly darkly infuscate, with white spots as follows: cell r 1 with 2 elongate, white spots, more apical spot about twice length of more basal spot; cell r 2+3 with 4 spots, more basal spot toward anterior margin of cell, immediately adjacent to more basal spot in cell r 1, 2 nd spot large, traversing cell, 3 rd spot like more basal spot, at anterior margin of cell, apical spot part of larger, apical spot of wing; cell r 4+5 with spot at middle of anterior margin, apical spot part of larger, apical white spot; crossveins r­m and dm­cu with transversely oval spots over them; crossvein rm distinctly aligned distal to apex of vein R 1; halter with immediate base pale, whitish, remainder of base light brown, most of knob dark brown, with apex of knob whitish. Forecoxa light brown to whitish; forefemur and foretibia appearing brown to light brown, extreme apex of tibia slightly lighter; foretarsus light brown; mid­ and hindcoxa pale, almost white; base of mid­ and hindfemora concolorous with respective coxa, remainder of mid­ and hindfemora and tibiae brown, with apex of mid­ and hindfemora dark brown, mid­ and hindtibiae dark brown although base of hindtibia whitish; mid­ and hindtarsi light brown. Abdomen brown, tergites becoming darker laterally, moderately microtomentose.

Morphology: Head: Conspicuously longer than high in lateral view; considerably wider than high in anterior view, head ratio nearly 0.50; ventral portion of head slightly projected. Eye oval with posteroventral margin concave, obliquely oriented to general plane of head. Thorax: Costal vein ratio 0.089; crossvein r­m aligned transversely well beyond apex of vein R 1 and at midlength of combined cell dm­bm.

Measurements and ratios: Body length 3.55 mm. Wing (Fig. 15) length 2.25 mm; width 1.00 mm.

Type material. The holotype female is labeled “ THAILAND, [Chiang Mai:] Fang, Mae Fang N[ational]P[ark], Doi Pha Hom Pok [variant transliteration of Doi Pha Hom Pog] 22– 23.11.2003 [22–23 Nov 2003]/ 2000m, along creek and forest road, Földvári, No11/ HOLOTYPE ♀ Curiosimusca maefangensis Rung, Mathis & Papp HNHM [red].” The holotype is double mounted (minuten in a rectangular card), is in good condition (cuticle greasy; right wing removed and slide mounted) and is deposited in the HNHM.

Type locality. THAILAND. Chiang Mai. Fang: Mae Fang National Park, Doi Pha Hom Pog [or Pok] (20º07’N, 99º12’E). Doi Pha Hom Pog is Thailand’s second highest mountain, and the holotype was collected at an elevation of 2000m.

Distribution. Oriental: Thailand (Chiang Mai).

Etymology. The species epithet, maefangensis, refers to Mae Fang National Park in Thailand, where this species has been collected.