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Revision of the Genus Psoricoptera Stainton, 1854 (Lepidoptera, Gelechiidae), with the Description of Two New Asian Species

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Revision of the Genus Psoricoptera Stainton, 1854 (Lepidoptera, Gelechiidae), with the Description of Two New Asian Species © Entomologica Fennica. 10 June 1999 Revision of the genus Psoricoptera Stainton, 1854 (Lepidoptera, Gelechiidae), with the description of two new Asian species Kyu-Tek Park & Ole Karsholt Park, K-T. & Karsholt, 0. 1999: Revision of the genus Psoricoptera Stainton, 1854 (Lepidoptera, Gelechiidae), with the description of two new Asian species. - Entomol. Fennica 10: 35-49. The Palaearctic gelechiid genus Psoricoptera Stain ton, 1854 is revised. Two pre­ viously described species, gibbosella (Zeller) and speciosella Teich are recog­ nized based on differences in genitalia; both have a trans-Palaearctic distribu­ tion. Their distinction is supported by differences in the morphology and biology of the early stages. Chelaria triorthias (Meyrick) and Lita lepigreella Lucas are placed in synonymy with gibbosella (syn. n.). Two new species P. latignathosa sp. n. P. kawabei sp. n. are described from E. Asia. Infraspecific variation in the genitalia of Psoricoptera is discussed. Kyu-Tek Park, Center for Insect Systematics, Kangwon National University, Chuncheon, 200-701 Korea. E-mail: [email protected] Ole Karsholt, Zoological Museum, Universitetsparken 15, DK-2100, K¢benhavn @, Danmark. E­ mail: [email protected] Received 12 July 1997, accepted 11 February 1998 Introduction Pitkin's (1984: 6) placement of it in the Gelechii­ ni. Karsholt & Riedl (1996) placed Psoricoptera The genus Psoricoptera was erected by Stainton between Gelechia Hubner, 1825 and Mirijicar­ (1854) for a single aberrant gelechiid moth, Ge­ ma Gozmany, 1955. lechia gibbosella Zeller, 1839, which he placed Up to date three species: gibbosella (Zeller), between the genera Depressaria and Gelechia. speciosella Teich and triorthias (Meyrick), all Psoricoptera exibits in most taxonomically im­ Palaearctic, have been assigned to Psoricoptera. portant characters a remarkable variability, which Lita lepigreela Lucas, described from Algeria, is is quite unusual in gelechiids. Up till now it was here considered a synonym of gibbosella. unsetteled if the hitherto described taxa of Psori­ For about 20 years, Scandinavian microlepi­ coptera represented one or more species. dopterists had recognized that another species of Meyrick (1925) synonymized Psoricoptera Psoricoptera may occur in North Europe besides with Chelaria Haworth, 1828, an objective jun­ gibbosella, and that the name P. speciosella Teich, ior synonym of Hypatima Hubner, 1825 (Chelar­ 1893 was available for the former. This was first iini), but most authors continued to use Psoricop­ pointed out by Harry Krogerus (pers. comm.) and tera for gibbosella, and it was listed as a valid later published by Svensson (1982). The picture genus by Sattler (1973). Psoricoptera shares with became less clear when material from other geo­ Hypatima the rough scales beneath second seg­ graphical areas was studied (Karsholt 1995). Sven­ ment of labial palpus, but we do agree with sson (1982) found a difference in the number of 36 Park & Karsholt: Revision of the genus Psoricoptera • ENTOMOL. FENNICA Vol. 10 microspines on the aedeagus between Swedish Abbreviations: specimens attributed to speciosella and gibbosel­ BMNH: The Natural History Museum, London, la (10-15 and 21-43 spines, respectively). We ex­ England. amined this character in specimens from differ­ CIS: The Center for Insect Systematics, Kang­ ent parts of Europe and counted 7-13 spines in weon National University, Korea. specimens with a speciosella type of uncus and IBPV: Institute of Biology and Pedology, Vladi­ 21-43 spines in specimens with a gibbosella type vostok, Russia. of uncus. However, these spines are not easily MGAB: Muzeul de Istorie Naturala "Grigore discernable due to their small size, and their Antipa", Bucharest, Rumania. number may be counted differently according to OPU: Entomological Laboratory, Osaka Prefec­ the position of the preparation. No helpful stud­ ture University, Sakai Japan. ies on the female genitalia of Psoricoptera have RNHL: National Museum of Natural History, been published. Leiden, The Netherlands. Recently, the assumption of the existence of TLMF: Tiroler Landesmuseum Ferdinandeum, two species of Psoricoptera in Europe was strong­ Innsbruck, Austria. ly supported by evident differences in biology and TMB: Termeszettudomanyi Muzeum Allattara, in colour of larvae (Kaitila 1996). Within the Budapest, Hungary. Gelechiidae it is unusual to find noticeable infra­ ZIAP: Zoological Institut, Academy of Sciences, specific variation in the shape of genitalia. In Pso­ St. Petersburg, Russia. ricoptera, morphological variation in the male ZMHB: Zoologisches Museum, Humboldt Uni­ genitalia, especially with regard to the shape of versitat, Berlin, Germany. the uncus, has been briefly discussed by several ZMUC: Zoological Museum, University of Co­ authors (Liu & Pai 1979; Karsholt 1995; Huem­ penhagen, Denmark. er, pers. comm.). Liu & Pai (1979), placing gib­ ZMUH: Zoological Museum, University of Hel­ bosella in Chela ria, illustrated two different types sinki, Finland. (pl. V, Figs 12, 13) of male genitalia, which show differences in the gnathos and uncus. As conclud­ ed below, we consider them to represent two dif­ 2. Species ferent species. In order to clarify this complex the authors Psoricoptera Stainton dissected and examined the genitalia of more than Psoricoptera Stainton, 1854: 100. 60 Psoricoptera specimens, originating from sev­ Phoricoptera Stainton, 1854: 76 (incorrect origi­ eral European countries and from Russian Far nal spelling) (Sattler 1973). East, Japan and Korea. We could confirm that dif­ ferences in the shape of the uncus (particulary) Type species: Gelechia (Chelaria) gibbosella Zelle1; 1839. and in the number of spines on the aedeagus sup­ port the recognition of two widespread Palaearc­ Diagnosis. Segment 2 of labial palpus with tic species, gibbosella and speciosella. The mate­ expanded ridge of loose scale-tufts beneath, slight­ rial from Asia studied by us moreover included ly furrowed on ventral surface; segment 3 lateral­ two additional new species, which are described ly flattened, thickened with loose scales dorsally. below. Forewing with well developed erect scale-tufts on In the descriptions of the genitalia below only upper surface; all veins present (Fig. 1), R3 aris­ characters of diagnostic significance are men­ ing from near upper comer of cell, R4 and R5 tioned. In chapters on 'Other material examined' stalked near or beyond middle, R5 to costa, M1 locality and dates are followed by a bracket con­ separate from R4+5, M2 almost parallel with M1, taining information (when available) on collec­ M3 and CuA1 separated; CuA2 arising from near tor, genitalia slides, and collection, separated by comer of cell; cell closed; hindwing with costa semicolons. expanded anteriorly before middle ; Rs and M1 ENTOMOL. FENNICA Vol. 10 • Park & Karsholt: Revision of the genus Psoricoptera 37 Figs. 1-3. Psoricoptera gibbosella (Zeller) : 1. Venation; 2. Male genitalia; 2a. Lateral aspect of valvella; 3. Aedeagus; 3a. Lateral aspect of distal part of aedeagus. 38 Park & Karsholt: Revision of the genus Psoricoptera • ENTOMOL. FENNICA Vol. 10 8 Figs. 4-8. Psoricoptera latignathosa sp. nov.: 4. Male genitalia; 5. Uncus; 6. Aedeagus; 7. Eighth tergite; 8. Eighth sternite. ENTOMOL. FENNICA Vol. 10 • Park & Karsholt: Revision of the genus Psoricoptera 39 separated from upper comer of cell, M3 and CuA 1 sion is not normally deeper than well below the connate. Segment VIII in male with sclerotized two lateral incisions; aedeagus (Figs 3, 46) with plates (figs 7-8): membranous plate surrounding more than 20 small spines on ventral surface be­ basal part of genitalia, with numerous semiovate yond two-thirds. scales laterally; Tergite VIII conical with a pair of Female genitalia (Fig. 24). Ostium plate (Figs. long hair-pencils at lateral base; sternite VIII 24-29) subtriangular, shorter than wide, not tend­ broad, fan-shaped, distal margin round, anterior ing backwards beyond base of apophyses anteri­ margin slightly incurved. ores; signum (34-38) hexagonal in outline, with diagonal groove, length about equal to width. Remarks. A male from Austria inf., Emstb­ Psoricoptera gibbosella (Zeller) (Figs. 1-3, runn has a deeply emarginated median incision 9-11, 16-23, 24-29, 34-38, 45-48) in uncus (Fig. 23) and 22 microspines on aedea­ gus, but the male genitalia are distinctly smaller Gelechia (Chelaria) gibbosella Zeller, 1839: 202 than in most speciosella, and the forewings are [examined]. with many reddish brown scales. It is here tenta­ Psoricoptera gibbosella: Stainton, 1854: 101. tively placed under gibbosella. Also in some spec­ Chelaria triorthias Meyrick, 1935: 589 [exam­ imens from Germany the median emargination of ined], syn. nov. uncus is deeper than is usual for gibbosella (Fig. Psoricoptera triorthias (Meyrick, 1935): Ueda et 45-46), but in other characters they agree with that al. 1995: 148. species, and we consider them to represent indi­ Lita lepigreella Lucas, 1946: 98, syn. nov. vidual variation. Adult (Figs 9, 47-48). Wingspan 14-20 mm. A large (20 mm) male from Far East Russia, Labial palp covered with fuscous-brown, light­ Askold Island has nearly uniform light brownish based scales, segment 2 creamish at inner and forewings (which may have been exposed to upper surfaces, segment 3 laterally flattened with light). Its genitalia fit gibbosella well, apart from long, loose light-brownish scales. Head creme to being of the size of speciosella. It is here assigned light brown, laterally darker, with lighter
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