Agrotera dentata, Liu & Qi & Wang, 2020

Liu, Ping, Qi, Mujie & Wang, Shuxia, 2020, Four new species of the genus Agrotera Schrank, 1802 (Pyraloidea: Crambidae: Spilomelinae) from Hainan Island, Zootaxa 4731 (4), pp. 556-564 : 557-558

Agrotera dentata sp. nov.

( Figs. 1 , 5 )

Type material. CHINA, Hainan Province: Holotype, ♂, Jianfengling (18.75°N, 108.87°E), Ledong Country, 810 m, 16. VI .2018, coll. Ping Liu, Xia Bai & Shuai Yu, slide No. LP18361 . Paratypes (3♂). 2♂, 14. VI .2018, other same data as for holotype, slide Nos. LP18202 , LP18335 ; 1♂, Shuiman Town, Wuzhishan , 690 m, 6.VIII.2017, coll. Xia Bai, Ping Liu & Shuai Yu, slide No. LP18191 .

Diagnosis. This species is similar to A. longitabulata Chen, Horak, Du & Zhang, 2017 in having a hook-shaped clasper and an undivided valva in the male genitalia, but it can be separated by the costal margin of the forewing with black spots at base and beyond the base, the papillary uncus, the dentatate arms of the juxta, the sub-triangular saccus much shorter than the length of the valva, and the distal 1/3 of the valva forming a stout spine-like dorsodistal process. In A. longitabulata , the costal margin of the forewing has one conspicuous dark fuscous spot at basal 1/10, the uncus is sub-triangular, the bifid half of the juxta is not dentate, the band-shaped saccus is approximately the same length as the valva, and the valva is produced to an acinaciform distal process ( Chen et al. 2017: 219, fig. 8).

Description. Adult ( Fig. 1 ) wingspan 20.0–22.0 mm. Head with vertex orange, frons yellowish white. Antenna yellowish brown, with black ring dorsally, cilia in male approximately as long as diameter of flagellomere. Labial palpus yellowish white mixed with fuscous scales. Maxillary palpus yellowish brown. Scales at base of proboscis yellowish brown mixed with fuscous scales. Patagium yellowish white with orange and black dots. Tegula and thorax yellowish white with orange dots. Forewing sub-triangular; basal 1/3 yellowish white mixed with orange, terminally edged by antemedial line, distal 2/3 purplish grey; costal margin with two black spots at base and beyond base, yellow along distal half; antemedial line black and orange, extending from basal 1/3 of costal margin slightly curved outward to near middle of posterior margin of cell, finally to basal 2/5 of dorsum; discoidal stigma crescent-shaped, arched toward base, black followed by orange, edged with blackish brown scales on outer margin; postmedial line black, extending from distal 1/4 of costal margin sinuate to distal 1/3 of CuA 2, thereafter weakly recurved inward to middle of CuA 2, finally sinuate to near distal 1/4 of dorsum; terminal margin black; cilia greyish brown except yellowish white below apex and above ventral corner of termen. Hindwing fan-shaped; basal 1/3 yellowish white mixed with a few orange scales, distal 2/3 purplish grey, with yellowish white tint along costa and dorsum; with a black spot at posterior angle of cell; with black and orange scales between near base of CuA 2 and middle of 1A; postmedial line blackish brown, from distal 1/3 of costal margin sinuate to distal 1/3 of CuA 1, then recurved inward to basal 2/5 of CuA 2, finally curved inward and becoming weak towards dorsum; longitudinal black streak above 3A; terminal margin black; cilia greyish brown mixed with yellow, yellowish white at tornus. Legs yellowish white, mixed with black on foreleg except on tarsus, black on 4 th and 5 th tarsomeres and at apices of 1 st– 3 rd tarsomeres.

Male genitalia ( Fig. 5 ). Uncus papillary, with a few setae distally. Transtilla triangular, arising from basal 1/3 of costa, narrowed from base, almost touching each other and downcurved medially. Valva broad and parallel from base to basal 2/3, distal 1/3 with costal part sharply narrowed to a point, forming a stout spine-like dorsodistal pro- cess, ventral part slightly less than 2/3 length of costal part, right angled ventroapically; costa band-like, uniform, terminating in middle of costal margin; clasper hook-shaped, arising from below base of costa; sacculus gradually widened from base to basal 3/4, gradually narrowed from basal 3/4 to a hairly apex, terminating at distal 1/4 of ventral part. Saccus sub-triangular, obtusely rounded anteriorly. Juxta with basal 2/5 shield-shaped, distal 3/5 bifid, each arm dentate apically. Phallus about 3/4 length of valva; cornuti consisting of a bundle of spinules.

Female unknown.

Distribution. China (Hainan).

Etymology. The specific name is derived from the Latin dentatus, referring to the juxta with each arm dentate apically.

Figures

FIGURES 1–4. Adults of Agrotera spp. 1, A. dentata, holotype, ♂; 2, A. protensa, holotype, ♂; 3, A. aculeata, holotype, ♂; 4, A. robustispina, holotype, ♂. (Scale bars = 5.0 mm).

FIGURES 5–8. Male genitalia of Agrotera spp. 5, A. dentata, holotype, slide No. LP18361; 6, A. protensa, holotype, slide No. LP18417; 7, A. aculeata, holotype, slide No. LP18393; 8, A. robustispina, holotype, slide No.LP18297. (Scale bars =0.5 mm).