Study on the Genus Rhopobota Lederer from China (Lepidoptera: Tortricidae: Olethreutinae)
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© Entomologica Fennica. 16 December 2005 Study on the genus Rhopobota Lederer from China (Lepidoptera: Tortricidae: Olethreutinae) Aihuan Zhang, Houhun Li* & Shuxia Wang Zhang, A., Li, H. & Wang, S. 2005: Study on the genus Rhopobota Lederer from China (Lepidoptera: Tortricidae: Olethreutinae). — Entomol. Fennica 16: 273– 286. This paper deals with seventeen species of the genus Rhopobota from China. Five species (R. furcata sp. n., R. orbiculata sp. n., R. fanjingensis sp. n., R. floc- cosa sp.n.andR. bucera sp. n.) are described as new to science and four species [R. blanditana (Kuznetsov), R. falcata Nasu, R. okui Nasu and R. symbolias (Meyrick)] are new for China. The male of Rhopobota eclipticodes (Meyrick) is described for the first time. Photographs of the adults and genitalia of the species mentioned are provided. A key to the known Chinese species is given based on adults and male genitalia. A. Zhang, H. Li & S. Wang, College of Life Sciences, Nankai University, Tianjin 300071, P. R. China; correspondent author’s e-mail: [email protected] Received 3 July 2004, accepted 7 March 2005 1. Introduction presented as new to China, and the male of Rhopobota eclipticodes (Meyrick, 1935) is de- The genus Rhopobota has faced several impor- scribed for the first time. tant taxonomic changes since mid-1800s, and the The new species described in this paper are process has still continued until recently. Lederer ordered at random, while the new records and (1859) erected Rhopobota for Tortrix naevana other species are ordered alphabetically. The key Hübner [1817]. More recently three genera, viz. provided here is artificial and just a tool for identi- Erinaea Meyrick, Norma Heinrich and Kundrya fication. It does not show the phylogenetic rela- Heinrich, were synonymized with Rhopobota tions. Lederer by Brown (1979). Brown (1983) also The type specimens are deposited in the In- sunk Eumarissa Clarke to Rhopobota,trans- sect Collection, College of Life Sciences, Nankai ferred eight species from Griselda Heinrich to the University, Tianjin, P. R. China. Abbreviations present genus and listed 26 species in the world. used: MGAB (Muzeul de Istorie Naturala, Razowski (1999a) listed 15 Palaearctic species. “Grigore Antipa”, Bucuresti, Romania); USNM Later Razowski (1999b) described four neotropi- (United States National Museum of Natural His- cal species, listed 34 species in the zoogeographic tory, Washington, D. C., USA). units and discussed the distribution of the genus. Up to date, 43 species and subspecies have been recorded, eight of which have been reported 2. Material and methods to occur in China (Brown 1983, Razowski 1999a, 1999b, Nasu 1999, 2000). In the present paper, The study is based on examination of the speci- five new species are described, four species are mens collected in the field by light trap and the 274 Zhang et al. • ENTOMOL. FENNICA Vol. 16 photographs of the type materials of two species 3. Sacculus with a finger-shaped process on respectively deposited in USNM and MGAB. ventral edge of basal opening 4 Genitalia were prepared following the methods – Sacculus without such process on ventral described by Li & Zheng (1996). edge of basal opening 6 4. Fore wing upperside ground color bicolored, viz., the anterior part blackish brown and the 3. Results posterior part pale greyish brown R. bicolor Kawabe 3.1. Rhopobota Lederer, 1859 – Fore wing upperside without characters men- tioned above 5 Rhopobota Lederer, 1859: 366. Type species: 5. Hind wing upperside with a blue blotch on [Tortrix] naevana Hübner, [1817]. costa R. naevana (Hübner) Erinaea Meyrick, 1907: 141. Type species: – Hind wing upperside without such blotch on Erinaea chlorantha Meyrick, 1907. costa R. latipennis (Walsingham) Norma Heinrich, 1923: 191. Type species: 6. Sacculus with ventral angle obtuse Epinotia dietziana Kearfott, 1907. R. symbolias (Meyrick) Kundrya Heinrich, 1923: 192. Type species: – Sacculus with ventral angle indistinct Kundrya finitimana Heinrich, 1923. R. falcata Nasu Eumarissa Clarke, 1976: 39. Type species: 7. Sacculus with a semicircular or papillary pro- Eumarissa leucognoma Clarke, 1976. cess at base 8 Distribution. Holarctic, Oriental, Australian – Sacculus without such process at base 9 and Neotropical regions. 8. Cucullus rounded dorsally, with two long Remarks. The characters of Rhopobota are setae on outer margin R. okui Nasu variable, which are proved by our study again. – Cucullus straight dorsally, with three or four Two characters, namely, the presence of lateral long setae on outer margin tegumentary projections of the tegumen in the R. eclipticodes (Meyrick) male genitalia and the sclerotized band at caudal 9. Sacculus with a large process on ventral edge end of the corpus bursae in the female genitalia, of basal opening, reaching costa have however been considered as synapo- R. ustomaculana (Curtis) morphies for the genus (Brown, 1983; Razowski, – Sacculus with a small process on ventral edge 1989). of basal opening, not reaching costa The species of Rhopobota have a sclerotized R. orbiculata sp. n. band at the caudal end of the corpus bursae, which 10. Tegumentary projections horned 11 is also found in the female genitalia of Nuntiella – Tegumentary projections clubbed 13 Kuznetsov (Zhang & Li, 2004). There is, how- 11. Tegumentary projections narrow and long; ever, no evidence that these similarities are socii small R. visenda (Kuznetsov) synapomorphic. – Tegumentary projections short; socii large 12 12. Neck of valva about 1/3 of cucullus width; ventral angle of cucullus about 90° 3.2. Key to the Chinese species of Rhopobota R. bucera sp. n. basedonadultsandmalegenitalia – Neck of valva as wide as cucullus width; ven- tral angle of cucullus acute-angled 1. Socii long, large finger-shaped 2 R. blanditana (Kuznetsov) – Socii small, triangular or of other shape 10 13. Tegumentary projections bending inward 2. Tegumentary projections small, not produced R. antrifera (Meyrick) into boot shape or sickle shape apically; cu- – Tegumentary projections straight, porrect 14 cullus distinctly dilated 3 14. Tegumentary projections triangular, gradu- – Tegumentary projections narrow and long, ally narrowed to top; cucullus with a big pro- boot-shaped or sickle-shaped apically; cess on outer margin cucullus slightly dilated 7 R. toshimai (Kawabe) ENTOMOL. FENNICA Vol. 16 • Genus Rhopobota from China 275 Fig. 1. Adults of Rhopobota spp. a. Rhopobota furcata sp. n., holotype #. b. Rhopobota orbiculata sp. n., holo- type #. c. Rhopobota fanjingensis sp. n., holotype #. d. Rhopobota floccosa sp. n., paratype #. e. Rhopobota bucera sp. n., holotype #. f. Rhopobota antrifera (Meyrick),#.g.Rhopobota bicolor Kawabe, $. h. Rhopobota blanditana (Kuznetsov), #; i. Rhopobota eclipticodes (Meyrick), #. – Without integrated structures mentioned a.s.l., 5.VII.2001, Houhun Li and Xinpu Wang above 15 leg., genital slide no. ZAH03776. Paratype: 1 #, 15. Neck of valva with thick spines on outer mar- same data as holotype. gin; cucullus about twice as long as its width Diagnosis. This species is similar to R. shiko- 16 kuensis (Oku, 1971), but can be distinguished by: – Neck of valva without thick spines on outer tegumentary projections shorter, blunt on termi- margin; cucullus less than twice its width nation and porrect, cucullus length less than twice R. floccosa sp. n. its width and ventral angle protruded. In R. shi- 16. Fore wing upperside with a bifurcate streak; kokuensis tegumentary projections slender, dis- ventral angle of cucullus protruded tally pointed and curved outward, cucullus length R. furcata sp. n. more than twice its width and ventral angle not – Fore wing upperside without bifurcate streak; protruded. ventral angle of cucullus nearly 90° Description. Fore wing expanse 14.5–16.0 R. fanjingensis sp. n. mm. Vertex with erect grey scales, frons white. Antenna with scape grey and flagellum light brown. Labial palpus greyish brown, terminal 3.3. Rhopobota furcata sp. n. (Figs. 1a, 2a) segment porrect. Thorax grey; tegula with basal half brown and apical half grey. Fore wing Type material. Holotype #: China, Wenxian upperside ground color grey, costa darker; costal (32.58° N, 104.41° E), Gansu Province, 2,000 m strigulae indistinct; basal fascia brown, situated at 276 Zhang et al. • ENTOMOL. FENNICA Vol. 16 basal 1/8, not reaching dorsum; a brown streak upperside ground color grey; two pairs of running from anterior angle of cell, bifurcated strigulae (pairs 3 and 4 )between base of the wing near termen, one branch reaching apex, the other and the point where Sc meets costa; other five reaching nearly 1/2 of termen; other patches and pairs (pairs 5 to 9) between Sc and R4; basal and fasciae inconspicuous; cilia grey mixed with subbasal fasciae forming indistinct basal patch, brown; underside dark grey, darker at costa. Hind covering about 1/3 of fore wing length; median wing upperside, underside and cilia grey. Protho- fascia light brown, extending to proximal area of racic leg brown; mesothoracic leg grey, with tib- ocellus; ocellus nearly rounded; cilia greyish iae and tarsi brown; metathoracic leg grey, with brown; underside dark grey except grey area of brown scales on tarsus. hind wing overlap posterior to CuP, strigulae Male genitalia (Fig. 2a). Tegumentary projec- present at costa like that in upperside. Hind wing: tions short clubbed, blunt on termination; socii upperside dark grey except grey area of fore wing large, triangular, haired. Valva broad at base, overlap anterior to Sc+R1; underside grey and basal part wider than cucullus width, neck dis- cilia grey. Prothoracic leg brown; mesothoracic tinct, ventrally armed with thick spines to base of leg grey, with tibiae and tarsi brown; meta- cucullus; cucullus nearly oblong, hairy, with mar- thoracic leg grey, with brown scales on tarsus. ginal spines, rounded dorsally, ventral angle pro- Male genitalia (Fig. 2b). Tegumentary projec- truded. Aedeagus thick; cornuti numerous (de- tions large and long, sickle-like; socii broad, large ciduous) and undectected. finger-shaped, hairy. Valva broad, with a small Female. Unknown. pointed sclerotized process on distal ventral edge Distribution. China (Gansu).