Meleonoma longihamata, Wang & Zhu, 2020

Wang, Shuxia & Zhu, Xiaoju, 2020, Study of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of twenty-one new species (II), Zootaxa 4881 (2), pp. 257-289 : 270-271

Meleonoma longihamata sp. nov.

( Figs 13 , 35 )

urn:lsid:zoobank.org:act:65083FE4-0772-4AE3-89E1-7E8AACF397EF

Type material. CHINA, Zhejiang: Holotype ♂, Huangtanyu (28.39°N, 118.84°E), 467 m, 6.VII.2013, leg. AH Yin & XC Wang, slide No. YAH15103 ( NKU) . Paratypes (2♂): 1♂, same data as holotype; 1♂, Yanping, Mt. Jiulong , 530 m, 4.VII.2013, leg. AH Yin & XC Wang ( NKU) .

Diagnosis. The new species can be distinguished from its congeners by the sacculus with a very large, elongately hook-shaped dorsal process extending from dorsal corner reaching before apex of valva. It is similar to M. bidigitata sp. nov. in the male genitalia, and the differences between them are stated in the diagnosis of the preceding species.

Description. Adult ( Fig. 13 ). Forewing length 5.0‾ 5.5 mm.

Head grey, frons mixed with yellow, occiput with yellow scales laterally. Labial palpus yellow, tinged with greyish-brown scales; second segment with a blackish-brown ring distally; third segment 2/3 as long as second segment, with a blackish-brown dot dorsally near apex. Antenna with scape yellow; flagellum annulated with blackish brown.

Thorax and tegula blackish brown, mixed with yellow. Forewing with basal 3/4 sub-parallel, then slightly narrowed to rounded apex; ground colour blackish brown; costal margin with inner yellow spot from basal 2/5 extending to anterior margin of cell, outer yellow spot at distal 1/5, inverted triangular, with a black dot anteriorly; fold with a yellow stripe extending from base arched to above basal 1/4, with a black spot at distal 2/5, bordered by yellow scales; cell with a black spot at basal 5/9, bordered by yellow scales, with black spot at anterior and posterior angles respectively, between two black spots set a large yellow spot; fringe blackish brown, with a yellow basal line along termen. Hindwing and fringe pale greyish brown. Legs yellow; on ventral surface, fore coxa blackish brown, yellow apically, femora of fore- and midlegs blackish brown, hind femur with blackish-brown scales, fore tarsus blackish brown except yellow at base of basal tarsomere and at apices of basal two tarsomeres, tarsi of mid- and hindlegs blackish brown except yellow at apex of each tarsomere, all tibiae blackish brown except yellow apically.

Male genitalia ( Fig. 35 ). Uncus long and slender, elongately spine-shaped, hooked apically. Gnathos weakly sclerotized laterally, exceeding anterior margin of tegumen. Tegumen widened medially; lateral arm elongate, gradually narrowed and slightly curved inward anteriorly. Valva with basal half narrower, distal half wider, widened ventrally from middle to basal 2/3, thereafter narrowed to rounded apex, with dense long setae distally; costa narrowly banded, reaching pre-apex of valva, with a row of sparse stout setae from near base to middle; transtilla broadly banded, distally produced to a setose thumb-shaped process directing dorsad, joined medially. Sacculus sub-quadrate, with a narrow heavily sclerotized band distally, slightly concave at apex medially, with an elongately hookshaped process from dorsal corner reaching before apex of valva, heavily sclerotized, curved medially. Saccus wide at base, narrowed to basal 3/4, distal 1/4 evenly slender to before narrowly rounded apex; slightly longer than uncus. Juxta V-shaped.Aedeagus longer than valva, basal 2/5 tubular, mostly membranous from basal 2/5 to distal 1/5, with a slender, sclerotized band between basal 2/5 and distal 1/5 dorsally, with a wide, curved, irregularly shaped sclerite at middle; distal 1/5 sclerotized, narrowed to apex; apex broadly concave medially, forming two apical spines.

Female unknown.

Distribution. China (Zhejiang).

Etymology. The specific epithet is derived from the Latin longihamatus, referring to the clavate dorsoapical process of the sacculus in the male genitalia.

Figures

FIGURES 9–14. Adults of Meleonoma spp. 9, M. cuneata sp. nov., holotype, ♂; 10, M. flavilineata, ♀; 11, M. forcipata sp. nov., paratype, ♂; 12, M. ledongensis sp. nov., holotype, ♂; 13, M. longihamata sp. nov., holotype, ♂; 14, M. mecobursoides sp. nov., holotype, ♂. Scales = 2.0 mm, except 9 = 5.0 mm.

FIGURES 31–36. Male genitalia of Meleonoma spp. 31, M. cuneata sp. nov., holotype, slide No. YAH12151; 32, M. flavilineata, slide No. YAH15501; 33, M. forcipata sp. nov., holotype, slide No. YAH15011; 34, M. ledongensis sp. nov., holotype, slide No. YAH15510; 35, M. longihamata sp. nov., holotype, slide No. YAH15103; 36, M. mecobursoides sp. nov., holotype, slide No. YAH15104. Scales = 0.2 mm.