Printer Friendly

A new species of the genus Sonagara (Lepidoptera: Thyrididae) from China and Vietnam.

The genus Sonagara was established by Moore in 1882 on the basis of the type species S. strigipennis Moore, 1882. Hampson (1893) synonymized the genus Sonagara, S. strigipennis and other similar taxa with Striglina Guenee, 1877 and S. scitaria (Walker, 1862), and many authors followed his treatment (Hampson 1897; Seits 1912; Della Torre 1914; Matsumura 1931; Inoue 1955; Chu & Wang 1991). Gaede (1932) pointed the difficulty of the S. scitaria complex, noting that "many species or forms were united with it [S. scitaria] as synonyms, which are better kept separated", and raised 2 taxa, Striglina vialis and S. strigipennis, to specific rank.

In the revisional study on the subfamily Striglinae, Whalley (1976) revalidated Sonagara as a monobasic genus, distributed in India, Sikkim, Formosa [Taiwan], Borneo and Hainan, and enumerated the generic features as follows: eyes without interfacetal hairs; fore tibia with tubercle, hind tibia with 2 pairs of spurs; tarsi each with rows of spines; forewing with M1 to R3 separately from cell; hindwing with Sc+R1 and R3 approaching but not touching; uncus modified with 2 lateral forks; gnathus modified, without peg-like teeth; valve with prominent apical sacculus process; female with double frenulum, sometimes triple; ostial plate relatively simple; signum in bursa. Robinson et al. (1994) added Burma [Myanmar] and Thailand to the distribution. In addition, Chu & Wang (1991) revised the Chinese Striglinae, and described Striglina curvida and Striglina stricta, which were synonymized with Sonagara strigipennis by Owada & Wang (2011).

In our surveys, 1 species, which is very similar to S. strigipennis in wing maculation but clearly different in the genitalia, was collected at Nanling National Nature Reserve in Guangdong province, South China, and adjacent areas. By our close examination of other related species, we confirm it as a new species, and describe it in this article.

MATERIALS AND METHODS

The description is based on the dried specimens from the Department of Entomology, South China Agricultural University (SCAU), Guangzhou, and the Department of Zoology, National Museum of Nature and Science (NSMT), Tsuku ba. Photographs of adults were taken by Nikon Coolpix 4500 digital camera. Genitalia were dissected under the microscope after the abdomen was dipped in boiling 10% NAOH solution for 3-5 min. The images of genitalia were taken by Carl Zeiss Discovery V12. The photos were combined by Adobe Photoshop software 6.0.

RESULTS

Sonagara bifurcatis sp. nov. (Figs. 1-6)

Diagnosis

This new species is very similar to S. strigipennis Moore in external morphology, but can be distinguished from it by the following features: the forewing has a brownish black line stretching from the apical angle to the outer side of inner margin; the oblique lines running from the apex of forewing to hindwing are more prominent; basal part of hindwing paler; the uncus wider, with 3 processes, middle one forked apically, and other 2 digitate; the gnathos has peg-like teeth; the valva shorter and broader; the harpe finger-shaped, sclerotized, broad at base, and with a minute apical hook; the aedeagus shorter, and with a crescent-shaped cornutus basally.

[FIGURES 1-6 OMITTED]

Description: Male

Wingspan 28-33 mm. Head whitish yellow, collar grayish white; antenna filiform, brownish yellow; labial palpus short, yellowish brown, proboscis long, curled downwards; compound eye surrounded by yellowish brown scales. Thorax and tegula with sliver yellowish white scales, baenopoda yellowish white. Abdomen with a broad white stripe close to thorax, urosome with a narrow grayish-yellow stripe. Forewing light yellow, costal margin tinged slightly with grey, pagina with some irregular brown transverse lines, strongest one from inner side of apical angle to middle of posterior margin, dark brown oblique line starting below apical angle to metagonia, apical angle slightly round, outer margin curved, fringe scales grayish-yellow. Hindwing, basal half whitish light yellow and with light red reticulate line, apical half light yellow, medially with an distinct dark brown line, which converges with the forewing oblique line at the costal margin, with a narrower black brown line at the outer said of the distinct line, which few inconspicuous brownish black lines.

Male Genitalia

Uncus with one median process and 2 lateral curved processes, median process broad basally, apically forked. Gnathos robust and fused distally, armed with peg-like teeth. Tegumen languetshaped, with long hair on terminal part. Valva broad medially, clothed with hair, as long as uncus, with 2 process at base. Harpe finger-shaped, strongly sclerotized, broad at base, slightly narrow at middle, apex slightly curved and with a minute hook. Juxta cap-shaped. Vinculum broad triangle-shaped, apex smooth. Saccus arc-shaped, nearly flat. Aedeagus cylindrical, with a crescent-shaped cornutus basally, 1/3 as long as aedeagus, terminal part with 2 rows of long spines at the inner side.

Female

Unknown

Type Material

HOLOTYPE: Male, CHINA, Guangdong Province, Mt. Nanling, 26-VII-2011, leg. Hai-ming Xu. In SCAU. PARATYPES: 1 male, data same as holotype; 1 male, same locality, 29-VII-2011; 1 male, 23-25-IV-2004; 16 males, same locality, 11 18-V-2005; 2 males, same locality, 18-22-V-2004; 12 males, same locality, 21-28-VI-2008; 10 males, same locality, 7-8, 12-13-VII-2007; 3 males, same locality, 27-31-VII-2008; 1 male, same locality, 1-6-VIII-2006; 1 male, same locality, 5-11-IX 2005; 1 male, Longtanjiao, 1,100 m, Qinyuan, Guangdong, 10-VII-2007, 2 males, Mao'ershan, Guilin, Guangxi, 6-10-VIII-2007, leg. Min Wang et al.; 2 males, Nang Oa, 800 m, near Mt. Pia Oac, Cao Bang, Vietnam, 11-V-1997, leg. Mamoru Owada. In SCAU, NSMT and IEBR.

Distribution

China (Guangdong and Guangxi Provinces), Vietnam (Cao Ban Province).

Etymology

The species name refers the specific character of the uncus with 2 forks.

Notes

The gnathos of this species has a series of peglike teeth, which are absent in Sonagara strigipennis, the type species of genus Sonagara. As was illustrated by Whalley (1976, figs. 1A-K), the outline of gnathos is quite variable in the genus Striglina. Excepting the gnathos structure, the male genitalia of this species have same conformation as those of S. strigipennis.

Caption: Figs. 1-6. 1. Male adult of Sonagara bifurcatis sp. nov., holotype. 2. Male genitalia, holotype. 3. Aedeagus. 4. Male adult of Sonagara strigipennis Moore. 5. Male genitalia. 6. Aedeagus.

ACKNOWLEDGMENTS

We are indebted to Mr. Hai-ming Xu and Ms. Hailing Zhuang for collecting the materials.

REFERENCES CITED

CHU, H. F., AND WANG, L. Y. 1991. The Thyrididae (Lepidoptera) of China. II. Striglinae. Sinozoologica 8: 325-348. In Chinese with English summary.

DELLA TORRE, K. W. 1914. Thyrididae In H. Wagner [ed.], Lepid. Cat. 20: 1-55.

GAEDE, M. 1932. Thyrididae In A. Seitz [ed.], Macro lepid. World 10: 743-774.

GUENEE, A. 1877. Ebauche d'une monographie de la famille Siculides. An. Soc. entomol. France (5)7: 275-304.

HAMPSON, G. F. 1893. The Fauna of British India, including Ceylon and Burma, Moths 1: 1-527. Taylor & Francis, London.

HAMPSON, G. F. 1897. On the classification of the Thyrididae-a family of the Lepidoptera. Proc. Zool. Soc. Lond. 1897: 603-633.

INOUE, H. 1955. Thyrididae. Check List of the Lepidoptera of Japan. Tokyo: Rikusuisha, pp. 197-199.

MATSUMURA, S. 1931. 6000 Illustrated Insects of the Japanese Empire. Tokyo: Toko-Shoin. 1, 496 pp.

MOORE, F. 1882. Heterocera (continued) (Cymatophoridae-Herminiinae) In W. C. Hewitson and F. Moore [eds.], Descriptions of new Indian lepidopterous insects from the collection of the late Mr. W. S. Atkinson. Calcutta: Asiatic Soc. Bengal. pp. 89-198, pls. 4-5.

OWADA, M., AND WANG, M. 2011. Thyrididae In M. Wang and Y. Kishida [eds.], Moths of Guangdong Nanling National Nature Reserve. Kelten: Goecke & Evers, pp. 30-36, pl. 4.

SEITZ, A. 1912. Thyrididae In Seitz, A. [ed.], Macrolepid. World 2: 371-374.

ROBINSON, G. S., TUCK, K. R., AND SHAFFER, M. 1994. A Field Guide to the Smaller Moths of South-East Asia. Kuala Lumpur: Malayan Nature Society, 309 pp.

WHALLEY, P. E. S. 1976. Tropical Leaf Moths-A monograph of the subfamily Striglininae (Lepidoptera: Thyrididae). London: British Museum (Natural History), 194 pp., 68 pls.

WALKER, F., 1862. List of specimens of lepidopterous insects in the collection of the British Museum. Bull. British Mus. 26: 1479-1794.

Lan-Lan Huang (1), Mamoru Owada (2) and Min Wang (1) *

(1) Department of Entomology, College of Natural Resources & Environment, South China Agricultural University, Guangzhou 510642, China

(2) Department of Zoology, National Museum of Nature and Science, Amakubo 4-1-1, Tsukuba, 305-0005 Japan

* Corresponding author; E-mail: minwang@scau.edu.cn
COPYRIGHT 2014 Florida Entomological Society
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2014 Gale, Cengage Learning. All rights reserved.

Article Details
Printer friendly Cite/link Email Feedback
Author:Huang, Lan-Lan; Owada, Mamoru; Wang, Min
Publication:Florida Entomologist
Article Type:Report
Geographic Code:9CHIN
Date:Jun 1, 2014
Words:1347
Previous Article:Dynamics and predation efficiency of Chrysoperla externa (Neuroptera: Chrysopidae) on Enneothrips flavens (Thysanoptera: Thripidae).
Next Article:Release and monitoring of Larinus minutus (Coleoptera: Curculionidae), a biological control agent of spotted knapweed in Arkansas.
Topics:

Terms of use | Copyright © 2017 Farlex, Inc. | Feedback | For webmasters