Etielloides luniformis, Yang & Liu & Ren, 2021

Yang, Linlin, Liu, Hongxia & Ren, Yingdang, 2021, One new species of the genus Etielloides Shibuya, 1928 from China (Lepidoptera Pyralidae, Phycitinae), Zootaxa 4990 (2), pp. 361-368 : 363-367

Etielloides luniformis sp. nov.

( Figs 1−6 )

http://zoobank.org/ urn:lsid:zoobank.org:act:2FD2A663-0901-46E6-B6BF-10311F56150D

Diagnosis: This new species resembles E. kogii Yamanaka , but differs from the latter by the costa of the same length as valva, the triangular clasper, the shield-shaped juxta 1.6 times length of width in the male genitalia, and the ostium represented by a pair of horned plates, the corpus bursae with a pair of ovate sclerotized patches posterolaterally in the female genitalia. In E. kogii , the costa is longer than the valva, the clasper is absent, and the juxta is rounded in the male genitalia; the ostium is funnel-shaped, and the corpus bursae has no sclerotized patch in the female genitalia.

Description. Adult (N = 72): Wingspan 17.5−21.0 mm. Male ( Figs 1 , 3 ): Vertex pale yellow, frons with gray- ish brown bulged tufts. Antenna with scape grayish brown, three times as long as wide; flagellum with first five segments coalesced, forming a deep sinus, bearing a ridge of scale tuft that grayish anteriorly and whitish posteriorly, and a few short teeth concealed within the tuft. Labial palpus upturned, extending about twice length of head beyond it, segmental ratio 2:4.5:1; basal segment gray, terminal two segments white. Maxillary palpus yellowish white, in the form of an aigrette, about 4/5 length of second segment of labial palpus, segmental ratio 2.5:0.8:1. Patagium, tegula and thorax grayish brown. Forewing ground color grayish white, basal area diffused ocherous and chestnut brown, central area mottled ocherous and black, distal area mixed with yellowish white; antemedial line near middle of forewing, white, obscure at costa, bordered inwardly with an obscure ocherous yellow shade, edged outwardly with a black line; postmedial line grayish white, waved, edged black on both sides; discal spots black, fused into a single crescent spot; terminal line grayish black; cilia basally chestnut brown, distally grayish black, with white basal and middle lines. Hindwing semitransparent, grayish white, tinted with pale brown along termen; cilia yellowish white. Fore- and midlegs yellowish white on upper surface, blackish brown on lower surface except yellowish white at apices of tarsomeres; hindleg yellowish white, variegated grayish brown on tarsus. Female ( Figs 2 , 4 ): Head ocherous. Antenna with scape ocherous, flagellum normal, ocherous and blackish brown. Labial palpus segmental ratio 1.5:4:1, second segment slender than that of male, ocherous to brown. Maxillary palpus yellowish brown, squamous, about half length of second segment of labial palpus, three segments about equal length. Patagium, tegula and thorax chestnut brown. Forewing ground color brown, basal area overlaid chestnut brown, mixed with a few blackish brown scales; terminal line chestnut brown. Legs yellowish white on upper surface, blackish brown on lower surface except yellowish white at apices of tarsomeres, mid- and hindlegs mottled grayish white. Other characters same as those of males.

Male genitalia ( Fig. 5 ). Uncus triangular, 1.6 times as long as basal width, narrowly rounded towards apex. Apical process of gnathos as long as uncus, elongate, leaflike, protruded a small hook apically; gnathos arms arising from center of dorsal surface. Transtilla absent. Valva 5.0 times length of width, narrowly rounded apically, ventral 2/3 densely covered with long bristles; clasper triangular, rounded terminally; costa as long as valva, clubbed, distal 1/5 thorn like, separated from valva; sacculus about 2/5 length of valva, bone-shaped. Vinculum U-shaped, length equal to greatest width, with two semi rounded anterolateral processes. Juxta shield-shaped, 1.6 times length of width, lateral lobes absent. Aedeagus clavate, slightly shorter than valva, granulated in distal 1/5; cornutus about 2/5 length of aedeagus, with basal half curved in S-shape, distal half thornlike. Eighth abdominal tergite somewhat fan-shaped; eighth abdominal sternite inverted T-shaped, associated with four pairs of culcita.

Female genitalia ( Fig. 6 ). Eighth tergite with anterior margin straight, posterior margin triangularly concave to middle of eighth tergite. Apophysis anterioris basally inflated, 1.3 times length of apophysis posterioris. Ostium funnel shaped, with a pair of elongate, horned plates, arranged in V-shaped. Ductus bursae very short, membranous, about 2/5 length of corpus bursae. Corpus bursae membranous, 1.7 times as long as wide, elliptically rounded, with a curved ribbon-like plate posteriorly, and a pair of ovate sclerotized patches posterolaterally, each patch half-length of corpus bursae, comprising of small, honeycombed plates. Ductus seminalis from corpus bursa near junction with ductus bursae.

Type material. Holotype ♂, China: Mt. Leigong (28°01’N 111°40’E), Leishan county, Qiandongnan Miao and Dong autonomous prefecture, Guizhou, 1200 m, 7.v.2012, coll. Yingdang Ren & Xiaoguang Liu, gen. slide No. RYD20120007.

Paratypes: China: Guizhou: 31 ♂, 40 ♀, same data as for holotype, gen. slide Nos RYD 20120005m, RY- D 2014025m, RYD 2014026m, RYD 2014027m, RYD 2014158m, DNAYLL 18047m, DNAYLL 18060m, RY- D 2014032m, DNAYLL 18085m, DNAYLL 18086m, DNAYLL 18088m, RYD20120006f, RYD20120008f, RYD2014028f, RYD2014029f, RYD2014030f, RYD2014031f, RYD2014152f, RYD2014153f, RYD2014154f, RYD2014157f, DNAYLL18061f, DNAYLL18087f, DNAYLL18090f, DNAYLL18091f .

DNA Barcode. Five DNA barcodes of paratypes was generated and deposited in the GenBank (accession numbers: MT 648697 – MT 648701 ). The intraspecific distances of the new species ranges from 0 to 0.46%, and interspecific distances between the new species and its closest relative E. kogii (accession numbers: MT 648693 – MT 648696 ) ranges from 4.40% to 4.89 %.

Distribution: China (Guizhou).

Etymology: The specific name is derived from the Latin word luniformis , meaning crescent, referring to the crescent discal spot on the forewing.

Figures

FIGURES 1−2. Adults of Etielloides luniformis sp. nov. 1, ♂, paratype: 1a, dorsal view of head, 1b, lateral view of head, 1c wing venation; 2, ♀, paratype: 2a, dorsal view of head, 2b, lateral view of head, 2c wing venation. (Scales: 1, 1c, 2, 2c = 5.0 mm; 1a, 1b, 2a, 2b = 0.5 mm).

FIGURES 3−4. Head structure of Etielloides luniformis sp. nov. 3, ♂, paratype, slide No. DNAYLL18085; 4, ♀, paratype, slide No. DNAYLL18091. (Scales = 0.5 mm).

FIGURES 5−6. Genitalia of Etielloides luniformis sp. nov. 5, ♂, paratype, slide No. DNAYLL18089; 6, ♀, paratype, slide No. DNAYLL18088. (Scales = 0.5 mm).