Systematic Study on the Genus Dinica Gozmány (Lepidoptera: Tineidae) from China
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© Entomologica Fennica. 6 September 2007 Systematic study on the genus Dinica Gozmány (Lepidoptera: Tineidae) from China Houhun Li & Yunli Xiao Li, H. & Xiao, Y. 2007: Systematic study on the genus Dinica Gozmány (Lepi- doptera: Tineidae) from China. — Entomol. Fennica 18: 184–192. Five species of the genus Dinica Gozmány are recorded from China. Among them, four new species (D. sulciformis Li&Xiao,sp.n.,D. rotunda Li&Xiao, sp. n., D. uncata Li&Xiao,sp.n.andD. ruiliensis Li&Xiao,sp.n.)arede- scribed. The adult and genitalia photographs of the new species are provided. A catalogue and a key to the world species are given. H. Li & Y. Xiao, College of Life Sciences, Nankai University, Tianjin, 300071, P. R. China; Corresponding author’s e-mail: [email protected] Received 30 October 2006, accepted 26 January 2007 1. Introduction thought that the systematic position of the genus could not be ascertained because its male genital Gozmány (1965) established the genus Dinica, structures were too peculiar. Robinson (1980) with Homalopsycha hyacinthopa Meyrick, 1932 doubted whether Dinica, Strophalinga Gozmány collected from Uganda as the type species. In the &VáriandJanseana Gozmány & Vári should be same paper, he transferred to Dinica the species assigned to Nemapogoninae. Later, he (Robinson Tinea aspirans Meyrick, 1920 described from 1984) put Dinica and Janseana to the Haplo- Kenya and T. orphnospila Meyrick, 1934 re- tineini Zagulajev in the subfamily Myrmeco- corded from Uganda. Subsequently he described zelinae when studying the systematic position of one species D. diana Gozmány, 1966 from the genus Haplotinea Diakonoff & Hinton. Rob- Uganda and another species D. vulcanica Goz- inson and Tuck (1996) also retained the genus mány, 2004 from Namibia. Petersen (1983) re- Dinica in the Haplotineini when they revised the ported two Asian species, D. endochrysa (Mey- checklist of the Tineidae of the Oriental Region. rick, 1935) from Japan and D. dierli Petersen, This placement is accepted in the present paper. 1983 from Nepal. Huang et al. (2006) first re- corded one Chinese species D. rhombata Huang, Wang & Hirowatari, 2006 from Guangdong Pro- 2. Material and Methods vince. To date, the genus includes eight species distributed in Africa and Asia. In this paper, we The twenty specimens examined in this study review the genus and describe four new species were collected using light traps in mountains, bo- from China. tanical gardens and nature reserves in China Gozmány and Vári (1973) placed the genus (Fujian, Gansu, Guizhou, Hunan, Sichuan, Tibet, Dinica in the subfamily Nemapogoninae when Yunnan and Zhejiang); six specimens collected treating the African species of Tineidae. Petersen from Thailand (Chiang Mai) are also included. (1983) revised Dinica and regarded it as not be- Genitalia dissections follow the improved meth- longing to the subfamily Nemapogoninae. He ods and techniques outlined by Li and Zheng ENTOMOL. FENNICA Vol. 18 • Systematics of Dinica (Tineidae) from China 185 Fig. 1. Distribution of Dinica spp. 1. D. vul- canica Gozmány; 2. D. diana Gozmány; 3. D. orphnospila (Meyrick); 4. D. hyacinthopa (Meyrick); 5. D. aspi- rans (Meyrick); 6. D. dierli Petersen; 7. D. ruiliensis sp. n.; 8. D. rotunda sp. n.; 9. D. sulciformis sp. n.; 10. D. uncata sp. n.; 11. D. rhombata Huang, Wang & Hirowatari; 12. D. endochrysa (Meyrick). (1996). Photographs of the adults and genitalia pair of heavily sclerotized caudo-lateral lobes. were taken with a Nikon Coolpix 4500 digital Valvae convoluted, apex broad; inner side dis- camera. tally covered with numerous long spiny setae; All the studied specimens from China are de- sacculus with distal portion separated from valva, posited in the Insect Collection, Nankai Univer- digitate or spine-shaped; transtilla developed, sity, Tianjin, China; six specimens from Thailand somewhat triangular. Juxta present. Aedeagus as paratypes of D. ruiliensis sp. n. are deposited in simple, generally curved. the Natural History Museum, London, UK Female genitalia: Posterior apophyses about (BMNH) and Osaka Prefecture University, twice length of anterior apophyses. Eighth ster- Sakai, Osaka, Japan (OPU) respectively. num rugulose. Ostium simple. Ductus bursae short. Corpus bursae elongate pyriform; signum present or absent. 3. Results Biology: Unknown. Distribution (Fig. 1): China, Japan, Kenya, 3.1. Dinica Gozmány, 1965 Namibia, Nepal, Thailand, Uganda. Remarks: Gozmány regarded the sclerotized Dinica Gozmány, 1965: 5. process at the lateral end of tegumen as an uncus Type species: Homalopsycha hyacinthopa in 1965 and as a gnathos in 1973. Petersen (1983) Meyrick, 1932. pointed out that there was no obvious structure Wingspan 10.0–27.0 mm. Head, thorax, and showing the uncus, and whether the sclerotized forewings white to purple fuscous; if white, process was a gnathos was doubtful. Robinson forewings with dark brown blotch running from (1984) believed that Haplotineini Zagulajev was base to about 3/4 along costal margin. Labial pal- the senior subjective synonym of Cephimallotini pi porrect, second segment with bristles laterally Zagulajev, in which the gnathos is absent and the and apically. Antennae about 0.6 × length of uncus is strongly sclerotized and specialized. So forewing, each flagellum covered with one annu- he placed Dinica in the Haplotineini. Huang et al. lus of narrow scales. Hindwings with costal mar- (2006) thought the sclerotized process was nei- gin curved downwards from about 3/4 in Asian ther a gnathos nor an uncus, only a lobe of species. tegumen. To avoid further confusion in using the Male genitalia: Uncus undeveloped. Gnathos terminology, we are here consistent with Huang absent. Subscaphium developed. Tegumen with a et al. in the description of the male genitalia. 186 Li & Xiao • ENTOMOL. FENNICA Vol. 18 3.2. Catalogue of the known Distribution: China (Guangdong, Hunan and Dinica species Zhejiang). Dinica aspirans (Meyrick, 1920) Dinica rotunda Li&Xiao,sp.n. Tinea aspirans Meyrick, 1920: 101. Distribution: China (Tibet). Dinica aspirans (Meyrick): Gozmány, 1965: 5; Gozmány and Vári, 1973: 7; Petersen, 1983: 39; Dinica ruiliensis Li&Xiao,sp.n. Robinson, 2001. Distribution: China (Yunnan), Thailand. Distribution:Kenya. Dinica sulciformis Li&Xiao,sp.n. Dinica diana Gozmány, 1966 Distribution: China (Guizhou and Sichuan). Dinica diana Gozmány, 1966: 60; Gozmány and Vári, 1973: 7; Petersen, 1983: 39; Robinson, Dinica uncata Li&Xiao,sp.n. 2001. Distribution: China (Gansu). Distribution: Uganda. Dinica dierli Petersen, 1983 3.3. Key to the world species Dinica dierli Petersen, 1983: 36; Robinson & of Dinica Gozmány Tuck, 1996: 8; Robinson, 2001. Distribution: Nepal. 1. Forewings white to ochreous white, with a dark brown blotch from base to about 2/3 Dinica endochrysa (Meyrick, 1935) along costal margin 2 Tinea endochrysa Meyrick, 1935: 579 – Forewings purple fuscous or gray, without Dinica endochrysa (Meyrick): Moriuti, 1982: dark brown blotch along costal margin 10 114; Petersen, 1983: 35; Robinson, 2001. 2. Dark brown blotch reaching about anal fold of Distribution: Japan. forewing 3 – Dark brown blotch reaching posterior margin Dinica hyacinthopa (Meyrick, 1932) of forewing D. dierli Petersen Homalopsycha hyacinthopa Meyrick, 1932: 208. 3. Tegumen with posterior margin convex 4 Dinica hyacinthopa (Meyrick): Gozmány, 1965: – Tegumen with posterior margin concave or 5; Gozmány and Vári, 1973: 8; Petersen, 1983: somewhat straight 8 40; Robinson, 2001. 4. Tegumen with posterior margin convex in tri- Distribution: Uganda. angular shape 5 – Tegumen with posterior margin convex in Dinica orphnospila (Meyrick, 1934) trapezoidal or M shape 6 Tinea orphnospila Meyrick, 1934: 516. 5. Subscaphium broad and irregularly rounded, Dinica orphnospila (Meyrick): Gozmány, 1965: with two rounded apical lobes 5; Gozmány and Vári, 1973: 8; Petersen, 1983: D. rotunda sp. n. 40; Robinson, 2001. – Subscaphium elongate, arrow-like, pointed at Distribution: Uganda. apex D. rhombata Huang et al. 6. Tegumen with posterior margin in somewhat Dinica vulcanica Gozmány, 2004 trapezoidal shape 7 Dinica vulcanica Gozmány, 2004: 52; Robinson, – Tegumen with posterior margin in somewhat 2001. M shape D. aspirans (Meyrick) Distribution: Namibia. 7. Subscaphium membranous D. diana Gozmány Dinica rhombata Huang, Wang & Hirowatari, – Subscaphium sclerotized 2006 D. endochrysa (Meyrick) Dinica rhombata Huang, Wang & Hirowatari, 8. Saccus slender, rod-liked 9 2006: 386. – Saccus broadly triangular D. ruiliensis sp. n. ENTOMOL. FENNICA Vol. 18 • Systematics of Dinica (Tineidae) from China 187 9. Caudo-lateral lobe of tegumen rounded dis- ochreous brown. Antennae grayish brown; scape tally D. sulciformis sp. n. dark brown, sometimes with sparse white scales. – Caudo-lateral lobe of tegumen long, spiny, Thorax white. Tegulae with basal half dark hooked D. uncata sp. n. brown, distal half white. Forewings with ground 10. Tegumen with posterior margin convex, color white to ochreous white; basal 2/5 of dark somewhat M-shaped 11 brown blotch narrow, sinuate ventrally, distal 3/5 – Tegumen with posterior margin almost convex downward to near anal fold, inverted straight D. vulcanica Gozmány trapezoidal, its posterior margin nearly parallel 11. Caudo-lateral lobe of tegumen with a long with anal fold, and its outer margin obliquely spine directed downwards at apex straight; cilia white to ochreous white. Hind- D. hyacinthopa (Meyrick) wings and cilia pale white. – Caudo-lateral lobe of tegumen with a short Male genitalia