Deltoplastis

Wang, Yuqi, Park, Kyu-Tek & Wang, Shuxia, 2015, Taxonomic review of the Genus Deltoplastis Meyrick (Lepidoptera: Lecithoceridae) in China and its neibouring countries, with a world catalogue of the genus, Zootaxa 4057 (2), pp. 210-230 : 211-212

Key to fifteen species of Deltoplastis

1 Forewing with a large median patch, its lower margin about 1/3 length or more on dorsum; subterminal patch large, trapezoidal, its outer margin extending from costal margin to dorsum, but inner margin much shorter.................. 2

- Forewing with a narrow, small median patch, its lower margin less than 1/5 length of dorsum; subterminal patch elongate, band-shaped, both margins extending from costal margin to dorsum.............................................. 8

2 Median patch on forewing extending from below upper margin of cell to dorsum or to above dorsum.................. 3

- Median patch on forewing extending from costal margin or near costal margin to dorsum............................ 5

3 Median patch on forewing triangular, its lower margin not reaching dorsum........................ D. dentata sp. nov.

- Median patch on forewing sub-semicircular, its lower margin reaching dorsum................................... 4

4 Valva with cucullus elongate, right-angled on its ventro-distal corner; caudal lobe of juxta subtriangular..................................................................................................... D. gyroflexa sp. nov.

- Valva with cucullus rounded on its ventro-distal corner; caudal lobe of juxta thorn-like................... D. gypsopeda

5 Median patch on forewing obliquely rounded on outer margin................................................. 6

- Median patch on forewing strongly protruded on outer margin................................................. 7

6 Juxta with papillate lateral process at posterior 1/3................................................ D. commatopa

- Juxta without papillate lateral process at posterior 1/3.................................. D. meahongsonensis sp. nov.

7 Juxta with triangular process on caudal margin; aedeagus with denticles in distal 1/3 on ventral surface.................................................................................................. D. acutiprocessa sp. nov.

- Juxta with a horizontal sub-semicircular ridge on posterior 1/3; aedeagus not dentate on ventral surface........ D. causdica

8 Subterminal fascia on forewing nearly straight, or slightly concave inwardly...................................... 9

- Subterminal fascia on forewing slightly arched outwardly, or angled outwardly before middle........................ 11

9 Juxta with long caudal lobe, as long as or slightly shorter than juxta; cornutus of aedeagus thorn- like................. 10

- Juxta with relatively short caudal lobe, shorter than 1/3 length of juxta; cornuti of aedeagus consisting of dense spinules........................................................................................ D. conjugata sp. nov.

10 Caudal lobe of juxta slender, curved outward before apex.................................... D. curviloba sp. nov.

- Caudal lobe of juxta elongate triangular, dentate on outer margin..................................... D. prionaspis

11 Subterminal fascia slightly arched outwardly.............................................................. 12

- Subterminal fascia angled outwardly before middle......................................................... 13

12 Aedeagus with cornutus arrowhead-shaped distally..................................... D. angustifoliacea sp. nov.

- Aedeagus with cornutus horseshoe-shaped distally........................................ D. hippocrepica sp. nov.

13 Caudal lobe of juxta as long as juxta............................................................. D. apostatis

- Caudal lobe of juxta shorter than juxta.................................................................. 14

14 Valva with cucullus nearly right angled on ventro-distal corner; juxta straight on caudal margin; caudal lobe of juxta triangular........................................................................................... D. lobigera

- Valva with cucullus gently rounded on ventro-distal corner; juxta concave and V shape on caudal margin; caudal lobe of juxta mastoid............................................................................ D. mamillata sp. nov.