Palumbina rugosa, Ga-Eun Lee 1, Houhun Li, Taeman Han & Haechul Park, 2018

Ga-Eun Lee 1, Houhun Li, Taeman Han & Haechul Park, 2018, A taxonomic review of the genus Palumbina Rondani, 1876 (Lepidoptera, Gelechiidae, Thiotrichinae) from China, with descriptions of twelve new species, Zootaxa 4414 (1), pp. 1-73 : 10

Key to Chinese species of Palumbina based on adults and male genitalia

(Excluding P. rugosa sp. nov.)

1. Forewing without hair pencil in male.................................................................... 2

- Forewing with hair pencil in male...................................................................... 11

2. Coremata present externally, attached to posterior margin bilaterally............................................ 3

- Coremata present interiorly or rarely absent............................................................... 6

3. Vinculum without processes (Fig. 107)......................................................... P. diplobathra

- Vinculum with a pair of processes (the macrodelta -group)..................................................... 4

4. Forewing with an inverted triangular or trapezoidal distal patch (Fig. 70), aedeagus strongly coiled (Figs 93, 94)................................................................................................... P. macrodelta

- Forewing without an inverted triangular or trapezoidal distal patch, aedeagus sinuous.............................. 5

5. Male labial palpus without hair pencil, valva 1/3 width of uncus, processes of vinculum conical-shaped (Fig. 95)................................................................................................ P. atricha sp. nov.

- Male labial palpus with hair pencil, valva as wide as uncus, processes of vinculum digitate (Fig. 96).. P. sigmoides sp. nov.

6. Uncus strongly sclerotized and ventrally with spine-like setae, sacculus under-developed, aedeagus with sclerite not exceeding apex (the nesoclera -group)............................................................................. 7

- Uncus moderately sclerotized and ventrally setose, sacculus well-developed, sclerite of aedeagus exceeding apex........ 8

7. Gnathos apically not pointed, valva bifid distally, anellus lobe digitate, base of aedeagus with dorsal extension (Fig. 97)................................................................................................ P. nesoclera

- Gnathos apically pointed, valva not bifid distally, anellus lobe rod-shaped, base of aedeagus without dorsal extension (Fig. 98).................................................................................... P. acinacea sp. nov.

8. Uncus very large, 1/2 length and 2/3 width of tegumen, with long hairs ventrally; sacculus blunt at apex (the grandiunca - group)............................................................................................. 9

- Uncus small, 1/4 length and 1/4¯1/3 width of tegumen, without long hairs ventrally; sacculus pointed at apex (the guerinii - group)............................................................................................. 10

9. Coremata present, gnathos hook pointed apically, valva with apex inwardly pointed (Fig. 91)....... P. grandiunca sp. nov.

- Coremata absent, gnathos hook widened apically, valva blunt apically (Fig. 92)............... … P. melanotricha sp. nov.

10. Segment II of male labial palpus with hair pencil reaching basal 1/3 of III, coremata 1/3 length of abdomen, anellus lobe basally not constricted (Fig. 90)........................................................ P. magnisigna sp. nov.

- Segment II of male labial palpus with hair pencil nearly reaching apex of III, coremata 1/6 length of abdomen ( Fig. 48 ), anellus lobe with base distinctly constricted (Fig. 89)...................................................... P. oxyprora

11. Male labial palpus slightly exceeding occiput of head; segment III stouter than and twice as long as II (Figs 8, 86); coremata nearly 3/4 length of abdomen ( Fig. 47 )......................................................... P. chelophora

- Male labial palpus not exceeding occiput of head; segment III slenderer and shorter than or as long as II; coremata as long as or shorter than 1/2 length of abdomen..................................................................... 12

12. Forewing silvery white with fuscous markings, tegumen with tubercles........................................ 13

- Forewing dark brown with dirty-white markings, tegumen without tubercles.................................... 17

13. Anellus lobe absent ( Fig. 100 )............................................................ P. sineloba sp. nov.

- Anellus lobe present................................................................................. 14

14. Segment III of male labial palpus 1/2 length of II, with a needle-like structure (Fig. 12)............... P. acerosa sp. nov.

- Segment III of male labial palpus slightly shorter than II, without a needle-like structure........................... 15

15. Process of juxta absent, valva with spine-like setae (Fig. 101)................................. P. spinevalva sp. nov.

- Process of juxta present, valva without spine-like setae..................................................... 16

16. Process of juxta triangular, valva gradually narrowing toward apex, anellus lobe with apex pointed (Fig. 103)............................................................................................... P. triangularis sp. nov.

- Process of juxta digitate, valva broadened near apex, anellus lobe with apex blunt (Fig. 99).................. P. pylartis

17. Forewing with a V-shaped basal marking at basal 1/4 (Fig. 85)................................. P. acuticula sp. nov.

- Forewing with zigzagged antemedian fasciae (Fig. 83)............................................... P. operaria

Figures

FIGURES 100̅105. Male genitalia of Palumbina spp. 100, P. sineloba sp. nov., slide no. LGE16189, holotype; 101, P. spinevalva sp. nov., slide no. LGE16193, holotype;102, P.acerosa sp. nov., slide no. ZJL05472, holotype; 103, P.triangularis sp. nov., slide no. LGE16263, holotype; 104, P.operaria (Meyrick), slide no. LGE16039; 105, P. acuticula sp. nov., slide no. LGE17019, holotype.(Scale bars = 0.2 mm).

FIGURES 47, 48. Male coremata of Palumbina spp. 47, P. chelophora (Meyrick), slide no. LGE16087; 48, P. oxyprora (Meyrick), slide no. LGE16196.(Scale bars = 0.5 mm).