© Entomologica Fennica. 10 June 1999

Revision of the genus Stainton, 1854 (, ), 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 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 , 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. (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

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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 face; to gibbosella. thorax brownish; tegula with light brown to creme Gelechia ( Chelaria) gibbosella Zeller was scales. Forewing brownish, mixed with whitish, described from one male and four females caught blackish and occasionally orange scales; three around spruce in Berlin (Germany) in July. In the erect scale-tufts at 1/4, 2/4 and 3/4; an indistinct, BMNH a female is already labelled as a lectotype angulated, whitish, subapical, transverse band; by K. Sattler. It is published here for the first time fringes dark at basal half, lighter towards tip. Hind­ (for data, see below). wing greyish, darker towards apex, with light grey Chelaria triorthias Meyrick was described fringes. from one male collected in July at Tokyo (Japan) Variation. In some specimens the whitish by S. Issiki. We have examined the holotype in scales in forewing are particular prominent and the BMNH. It is in a good condition, but the head can form an irrigular white, subcostal line. In other is missing. The moth and its genitalia are figured specimens there are nearly no white scales, and by Clarke (1969: pl. 216). Specimens from Japan such specimens have a blackish-brown appea­ are generally more blackish and contrasting com­ rence. Occasionally such specimens have black, pared with European ones and may deserve sub­ longitudinal lines (Fig. 9). Specimens which are specific status. However, having examined very nearly entirely whitish or blackish are rare. In most little material from Japan, we refrain from decid­ West Palaearctic specimens a considerable amount ing on this until sufficient material from other parts of red-brownish scales are present, whereas East of Asia is available for comparison. Palaearctic specimens are more blackish. Lita lepigreella Lucas was described from an Male genitalia (Fig. 2). Uncus variable (Figs unspecified number of specimens from "Alger" 16-23, 45), but incisions of distal margin normal­ (Algeria), collected by M. Lepigre on April 16, ly not strongly pronounced, and the median inci- 1937. We have examined, in the BMNH, a colour 40 Park & Karsholt: Revision of the genus Psoricoptera • ENTOMOL. FENNICA Vol. 10

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Figs. 9-11: Psoricoptera gibbosella (Zeller): 9. Adult of an unusual dark specimen from Germany; 10. Tergite I-ll; 11. Sternite II; Figs. 12-23. Uncus of male genitalia of Psoricoptera: Figs. 12-15. P. speciosellaTeich; Fig. 12. Finland (4144/Park); 13. Finland (4148/Park); 14. Finland (4146/Park); 15. Japan (1957/Park); Figs 16-23. P. gibbosella (Zeller): 16. Finland, (4154/Park); 17. Finland (4143/Park); 18. Finland (4145/Park); 19. Japan, Holotype of triorthias Meyrick (BM-8517); 20. Korea (1878/Park); 21. Korea (1785/Park); 22. European Russia (BM-26377); 23. Austria (OK 4651). ENTOMOL. FENNICA Vol. 10 • Park & Karsholt: Revision of the genus Psoricoptera 41

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.; 'I 30 ((/• ,.

Fig. 24. Female genitalia of Psoricoptera gibbosella (Zeller), Korea (1837/Park): Figs. 25-33. Ostium plate of Psoricoptera; Figs. 25-29. P. gibbosel/a (Zeller): Fig. 25. Japan (1955/Park); 26. Japan (1880/Park); 27. Far East Russian (4153/Park) ; 28. Far East Russia (4152/Park); 29. Finland (4149/Park); Figs 30-32. P. speciosella (Teich) : 30. Finland (4148/Park); 31. Finland (4150/Park); 32. Japan (1834/Park); Fig. 33 . P. kawabei sp. n., (1839/Park). 42 Park & Karsholt: Revision of the genus Psoricoptera • ENTOMOL. FENNICA Vol. 10

Figs. 34-41. Signa of Psoricoptera. Figs. 34-38. P. gibbosella (Zeller): 34. Korea (1837/Park); 35. Far East Russia (4147/Park); 36. Japan (1880/Park); 37. Finland (4149/Park); 38. Japan (1955/Park); Figs 39-41. P. speciosella Teich: 39. Finland (4148/Park); 40. Finland (4150/Park); 41. Finland (4151/Park). slide of a female, labeled as type and belonging imens of the following new species, P. latignath­ to the Museum National d'Histoire naturelle in osa. Arahou et al. (1991) rapported gibbosella to Paris, and we are convinced that lepigreella is a be a pest in Morocco, where the larva lives in buds synonym of gibbosella. Arahou et al. (1991) of Quercus ilex. They found that up to 45% of the showed that gibbosella hibernates as an adult in buds could be destroyed. The adult flies from July North Africa. and into the autumn. InN. Europe it is rarely seen Larva. The larva was first described by Stain­ later than medio September, but further south it is ton (1867) as: "Grey, with darker subdorsal line met with in late September and October, and from and slender, slightly darker dorsal line; head black; N. Africa it is reported to hibernate as an adult the second segment black, with the anterior edge (Arahou et al. 1991). whitish; anal segment with a small black plate; Distribution. China, Japan, Korea, Russia (in­ ordinary spots small and black". According to cluding and Far East), Europe, Asia Mi­ Kaitila (1996) it "is greenish grey with dark grey nor, N. Africa. Scarlata & Gorodkov (1984) pub­ middorsal line. Abdorsal line absent". Most de­ lished a distribution map for gibbosella within scriptions of the larva of gibbosella (e. g. by Meess former Sovjet Union, but their records certainly 1910) originate from Lienig & Zeller (1846), and included speciosella as well. refer to the larva of speciosella (see below). Type material. 'Lectotype I 417 34, 33 I Zel­ Bionomics. The main host plant is Quercus sp., ler coll., Walsingham Collection, 1910-427 I Lec­ but it has occasionally been bred from Salix sp. totype

Psoricoptera speciosella Teich (Figs. 12-15, Bionomics. The larva is slim and quick and 30-32, 39-41, 49-50) bends an edge of a leaf of the hostplant close around its body (Lienig & Zeller 1846). It feeds Psoricoptera speciosella Teich, 1893: 358. on leaves of Salix sp. in late June and early July Adult (Figs. 49-50). Wingspan 17-21 mm. Very (Kaitila 1996). A larva found on "Wollweide" similar to gibbosella, but with forewing more [Salix cf. caprea] in the beginning of June pupat­ blackish, or blackish and whitish, only occasion­ ed at the 25th of June and the adult emerged at ally with brownish areas. the 20th of July (Lienig & Zeller 1846). The adult Variation. In some specimens the whitish moth flies from late July to late September. In scales form an irrigular subcostal line, and rarely Finland and Sweden it is a little later on the wing they cover most of the costal half of the forewing. than gibbosella (Kaitila 1996, Svensson 1982). Occasionally specimens with many red-brownish Aarvik (1987) reported upon finding of a larvae scales, especially in dorsal half, occur. of speciosella already the 26th of May. Male genitalia. Very similar to those of gib­ Distribution; Finland, Germany, Japan, Nor­ bosella, but slightly larger; median incision of way, Poland, Russia, Sweden. Recently reported distal margin of uncus between inner lobes strong­ from France (Nel & Varenne 1996). ly emarginated, reaching well beyond the incision Remarks. According to Kaitila (1996) the gen­ of the two lateral incisions (Figs. 12-15); aedea­ italia of speciosella are larger than those of gib­ gus with less than 16 microspines on ventral sur­ bosella. Our measurements show them to be about face beyond two-thirds. 10-15% larger (at least in N. European specimens), Female genitalia. Ostium plate (Figs. 30-32) but speciosella is, on average, larger than gibbosel­ posteriorly more acute and less distinctly intend­ la, wherefore the relative size of the genitalia may ed medially than in gibbosella, its length and width be the same in both species. almost equal, extending backwards beyond base In one specimen from Japan the gnathos are of apophyses anteriores; signum (39-41) gener­ shorter and broader, resembling that of P. latig­ ally smaller than that of gibbosella, variable, but nathosa n. sp. However, it has the uncus similar usually shorter than wide, whereas in gibbosella to speciosella, and it was bred from Salix togeth­ the length and width are subequal. Apophyses er with a female, which has the genitalia similar anteriores usually longer than in gibbosella. to those of speciosella (Fig. 32). It is here tenta­ Larva. The larva was first described by Lienig tively listed under that species, but we are aware & Zeller (1846) (under the name of gibbosella) that it may well represent a further, undescribed (translated from German): "It is first light species. dust-grey with fine black warts with a few light Kaitila (1996) stated the larva of gibbosella hairs. Later it becomes light brown-whitish with and speciosella to differ in colour. However, also a dark grey line on each side of the abdomen; head in these character there seems to be some varia­ blackish, prothoracic plate and thoracic legs black; tion, when one compare his descriptions with anal plate bone white. At last it changes again into those given by Stain ton (1867) and Lienig & Zel­ pale apple-green. The warts, which look as black ler (1846) (see above). Further research is needed dots, have a light brownish hair; along the back to prove if constant morphological characters ex­ runs a fine grey-green line with small, rounded, ist between the larva of gibbosella and speciosel­ rosa-reddish spots in the incisions between the la. segments. Along the sides of the abdomen is a The host plant association of the larva of gib­ brownish line, and above the abdominal legs a bosella with Quercus spp. and speciosella to Sa­ line composed of rosa reddish spots. Head dark lix spp. is apparently an important diagnostic char­ brown; prothoracic plate wax-yellow, posteriorly acter for these two species in both Europe and and laterally blackish edged; thoracic legs black". Asia. Even though we examined a specimen of Recently the larva has been described as "pale gibbosella which was, according to its label, bred brownish grey with reddish brown middorsal line. from Salix, cases of host plant shifts between these Abdorsalline reddish" (Kaitila 1996). two species are at most very occasional. There ENTOMOL. FENNICA Vol. 10 • Park & Karsholt: Revision of the genus Psoricoptera 45

may, moreover, be some doubt about the correctnes 1982 (K. Mikkola; ZMUC, ZMUH); 1 a, SU, Bez. of this information as it is known that the collec­ Perm, Verdichter station Ordinskaja, 28 km bso tor, H. P. S. S~nderup, in some cases labeled bred Barda, 300-400 m, 8.-9.VIII.1987 (T. Karish; specimens according to the host plant(s) given in BMNH); 8 a, 5 ~,Far East, Primorskij Kraj, Shko­ the literature, when he could not remember from tovo distr., Anisimarka, 19.VII.-7.VIII.l994 (N. where he bred the (0. Karsholt, unpubl.). Savenkov, ZMUC). At his time most literature records of host plants for gibbosella were based upon Lienig & Zeller's Psoricoptera latignathosa sp. n. (Figs. 4-8, 51) ( 1846) record from Salix, which originated from a misidentified larva of speciosella. New, well Diagnosis. In external characters very similar to documented records of larvae of gibbosella from gibbosella (Zeller) and speciocella Teich, apart Salix or speciosella from Quercus would there­ from thatthe forewing (of the somewhat worn hol­ fore be important. otype) has no whitish or brownish scales, the post­ Psoricoptera speciosella Teich was described median line of forewing is followed by black from a single specimen collected at Dudeln in scales, and the fringes of hindwing has a dark Latvia. The collection of Teich is considered lost, fringe-line. For differences from P. kawabei q. v. but the identity of speciosella has been generally In the male genitalia latignathosa is unique in accepted. having the gnathos extremely broad towards base Material examined. Finland: Ka: 3 a a, 2 ~ ~, (not narrowed and sickle-shaped as in the two Virolahti, 2.-18.VIII.1975 (J. Jalava; 4142/Park, above mentioned species), and uncus with only 4148/Park, 4150/Park; ZMUH); 1 a, ideb., 16.- slight incisions in distal margin. 28.VIII.l979 (E. Laasonen, ZMVC);Ab: 1G Loja, Adult (Fig. 51). Wingspan 18 mm. Head and l.VIII.1975, 1a 18.VIII.1978 (H. Krogerus; OK thorax greyish brown. Antenna and labial palp typ­ 4652; ZMUC); 1a, Karisloja, 18.VIII.1978 (H. ical for the genus. Forewing greyish with scat­ Krogerus; ZMUC); N: 2 <;? ~, Porvoon mlk., tered black markings; three prominent, erect, 15.VIII.1970, 2.1X.1972 (E. Suomalainen; OK blackish scale-tufts: two larger, longitudinal ones 4044; ZMUC); 1 ~, ideb., 5.-7.VIII.l980 (L. LOf­ are located posteriorly to cell, one at distal end of gren; ZMUC); 1 a, Nurmijarvi, 18.VIII.1971 (J. cell, and a couple of smaller ones are irregularly Jalava; ZMUH); 1 a, 1 ~, Helsingfors, scattered over the wing; an indistinct, angulated, 23.VIII.1975 (Nybom; 4151/Park; ZMUC, light grey, subapical, transverse band is followed ZMUH); 3 a a, 2 ~ ~, Helsinki, Kannelmaki, by black scales; fringes dark at basal half, distal­ 31.VII.-2.VIII.1979 (J. Jalava; P. Huemer93/443, ly lighter. Hindwing greyish, darker towards apex; 93/444, 4146/Park; ZMUH); 1 a, Espoo, 11.- fringes greyish, with darker, basal fringe-line. 14.IX.1982 (L. Lofgren; ZMUC). Germany: 1 a, Male genitalia (Fig. 4). Gnathos broad basal­ Leutstetten, 590 m, prima IX.1966, 1 a, ultimo ly, triangular, with pointed apex. Uncus (Fig. 5) VIII.l968 (F. Zi.irnbauer; Huemer/GEL207, 210; only slightly emarginated or incised on distal TLMF); 1 a, Blankenburg, Schwarzatal, 11.VIII. margin, with lateral lobes very short (this charac­ 1988 (H. Steuer; HS 3383; Steuer). Japan: Naga­ ter may prove to be variable); saccus narrower no Pref: 1 a, 1 ~, Setagaya, 5.-10.VII.1964, bred than in related species; aedeagus (Fig. 6) with less from Salix sp. (A. Kawabe; 1834/Park, 1835/Park; than 15 inconspicuous microspines beyond two­ CIS); 1 a, Kisojihara, Nagawa, 25.VIII.1984 (K. thirds. Fujisawa; 1957/Park; CIS); 1 a, 1 ~, Hokkaido, Female. Unknown. Tokachi, Shikaoi, Shikaribetsukyo, 24.VIII.1981 Bionomics. Immatures and host plant unknown (J. Kanazawa; OK 4650, OK 4654; ZMUC). Po­ (but see "Remarks" below). The holotype was land: 1 a, Puszcza Bialowieska, Park Narod, collected in late July. 25.VIII.1965, 1 ~, 26.VIII.l966 (S. Adamczews­ Distribution. China, Korea. ki; OK4653, OK4658; ZMUC). Russia: 3a, 1 ~, Remarks. The male genitalia figured by Liu Altai, Teletshoe oz., Artybas bioi. st., 18.-22.VIII. & Pai (1979: Fig. 12) under the name of gibbosella 46 Park & Karsholt: Revision of the genus Psoricoptera • ENTOMOL. FENNICA Vol. 10

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Figs. 42-44. Psoricoptera kawabei sp. n. Fig. 42. Male genitalia (1956/Park); Fig. 43. Aedeagus (1956/Park) ; Fig. 44. Corpus bursa with signum (1839/Park); Figs. 45-46. Psoricoptera gibbosella (Zeller), Austria (Sutter 5219); Fig. 45. Uncus; Fig. 46. Lateral aspect of distal part of aedeagus. ENTOMOL. FENNICA Vol. 10 • Park & Karsholt: Revision of the genus Psoricoptera 47

47 r 48

49 50

51 52

Figs 47-52. Adults of Psoricoptera (x 3). Figs 47-48. P. gibbosella (Zeller) Fig. 47. a, Denmark. Fig. 48. a, Korea; Figs. 49.-50. P. speciosella Teich: Fig. 49. a , Finland; Fig. 50. a, Japan; Fig. 51. P. latignathosa sp. n., Holotype a , Korea; Fig. 52. P. kawabei sp. n., E, Japan. obviously belong to latignathosa. In the descrip­ one of these trees. We have had no opportunity to tion (in Chinese) of the adult, larva, and biology examine the material studied by Liu & Pai. of their gibbosella, they listed as host plants Quer­ Type material. Holotype: 0', Korea, Gangweon cus sp., Juglans mandschurica and Salix sp., and Prov., 10 km N Chuncheon, Chugog, 30. VII.1986 it is possible that the host plant of latignathosa is (K.T. Park; 1786/Park; CIS). 48 Park & Karsholt: Revision of the genus Psoricoptera • ENTOMOL. FENNICA Vol. 10

Psoricoptera kawabei sp. n. (Figs. 33, 42-44, elude the females from the type series. 52) Etymology. This new species is named after the late Mr. A. Kawabe who collected and reared Diagnosis. In external characters similar to the larvae of this species. three other Psoricoptera species, apart from be­ Type material. Holotype: G, Japan, Nagano ing slightly larger. From most specimens of gib­ Pref., Shimonia, Tamoto Yasuoka, 23.VIII.1982 bosella and speciosella it can be separated by (M. Hara; 1956/Park; CIS). having no brownish or whitish scales, and from Material excluded from type series. Japan: 1 'i?, latignathosa by its dark hind wings without dark­ Gunma Pref., Tanigawa, 6.VII.l973, bred from er fringe-line. In the male genitalia kawabei is Rhus chinensis (A. Kawabe; 1839/Park; CIS). 1

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