Dolgoma khelanga, Volynkin & Černý, 2021

Dolgoma khelanga View in CoL sp. n.

( Figs 13 View FIGURES 9–16 , 23 View FIGURES 21–23 )

Type material. Holotype ( Figs 13 View FIGURES 9–16 , 23 View FIGURES 21–23 ): male, “N. Thailand, Lampang Chae Son NP, 1496m, 18°51,080’N, 99°22,016’E 10.V.2008 leg. K. Černý ” / “Slide AV4693 ♂ A. Volynkin ” ( MWM / ZSM, ex CKC). GoogleMaps

Paratypes: THAILAND: 3 males, same data as for the holotype GoogleMaps ; 1 male, same locality and collector as for the holotype, 1.VI.2005 ( CKC) GoogleMaps .

Diagnosis. The forewing length is 11 mm in males. The male of D. khelanga sp. n. ( Fig. 13 View FIGURES 9–16 ) is superficially similar to that of D. kawila sp. n. ( Figs 9, 10 View FIGURES 9–16 ), but differs in the somewhat smaller size, the somewhat narrower forewing, the ochreous forewing ground color (rusty-brown in D. kawila sp. n.) and the somewhat more basally positioned postmedial line. The male genital capsule of the new species ( Fig. 23 View FIGURES 21–23 ) is surprisingly very similar to that of the superficially dissimilar D. striata ( Figs 14 View FIGURES 9–16 , 24 View FIGURES 24–25 ), but differs in the longer uncus (in proportion to the tegumenvinculum complex length) and the somewhat wider valva (the length to width ratio is 5.3:1 vs. 5: 1 in D. striata ) which is somewhat more dilated subapically. Compared to D. kawila sp. n. ( Fig. 21 View FIGURES 21–23 ), the male genital capsule of D. khelanga sp. n. has a longer uncus (in proportion to the tegumen-vinculum complex length), a somewhat longer vinculum (in proportion to the tegumen length), and a longer (in proportion to the tegumen-vinculum complex length) and somewhat narrower valva (the length to width ratio is 5.3:1 vs. 4: 1 in D. kawila sp. n.) which is less dilated distally. The phallus of the new species is shorter than in D. kawila sp. n. (in proportion to the tegumen-vinculum complex) and is more narrowed distally. The vesica of D. khelanga sp. n. is markedly narrower than in D. kawila sp. n. and its distal diverticulum has a shorter tip. The phallus and vesica of D. striata are unknown (see Fig. 24 View FIGURES 24–25 ).

Female unknown.

Distribution. Known from Northern Thailand ( Lampang Province).

Etymology. Khelang is the old name of Lampang. The specific epithet refers to the type locality.