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Hymenoptera: Tenthredinidae) ATHALIA LONGIFOLIAE sp. rev., stat. nov., new for the netherlands and germany (hymenoptera: tenthredinidae) Ad Mol Athalia longifoliae is removed from synonymy with A. circularis and is upgraded to the species level from A. circularis ssp. longifoliae. The species is recorded for the first time for the Netherlands (19 localities) and for Germany (one locality). Differences between A. longifoliae and A. circularis are described and some notes on the ecology of A. longifoliae are given. In the Netherlands A. lon gifoliae was found only in a few limited areas where its host, Veronica longifolia grows, whereas A. circularis is common throughout the Netherlands. As both taxa occur within the same geographical area, do not interbreed and occupy their own ecological niche, these is no reason to treat A. longifoliae as a subspe cies of A. circularis. introduction The sawfly Athalia longifoliae Kontuniemi, 1951 Since then, different opinions on this species (fig. 1, 2) was described from Fin land, after an have been published. Already three years after unknown number of females. The material was its description, Benson (195) synonymized reared from larvae found on Veronica longifolia. A. longifoliae with A. lineolata Lepeletier, 182 1 2 Figure 1-2. Athalia longifoliae (the Netherlands), ventral view, 1. male, ’s-Hertogenbosch, along canal, 19.vii.1997, 2. female, Gemonde, along river Dommel, 15.vii.1996. Figuur 1-2. Athalia longifoliae (Nederland), onderzijde, 1. mannetje, ’s-Hertogenbosch, Drongelens afwaterings- kanaal, 19.vii.1997, 2. vrouwtje, Gemonde, langs de Dommel, 15.vii.1996. mol ‒ ATHALIA LONGIFOLIAE new for the netherlands and germany Figure . Veronica longifolia, the Netherlands, Gramsbergen, along river Vecht, 26.vi.29. Photo Tineke Cramer. Figuur . Lange ereprijs Veronica longifolia, Gramsbergen, langs de Overijsselse Vecht, 26.vi.29. Foto Tineke Cramer. the netherlands (= A. circularis (Klug, 1815)). Hellén (1955) and again Benson (1962) confirmed this synonymy In 1996, I discovered some males and females of after studying the type of A. longifoliae. Lorenz Athalia in the province of Noord-Brabant, flying & Kraus (1957), however, mentioned A. longifoliae around Veronica longifolia. These specimens as a species in their key of larvae. Muche (1962) agreed with Chevin’s description of Athalia circu- disagreed with their view, postulating that laris longifoliae in every respect. Since then, 69 ? A. longifoliae should be regarded as a colour form and 2 / of this taxon have been collected on of A. circularis only. Chevin (1969) revised the Veronica longifolia (fig. ) on 19 localities in the French species of Athalia. In his view, A. circularis Nether lands and one locality in Germany (fig. ). appears to be a polymorphic species, with All localities are listed in table 1. The specimens longifoliae being part of the complex. Chevin were compared with material of the A. circula ris- described the male of longifoliae for the first time complex, collected on about other localities and gave a redescription of the female after addi- across the Netherlands (fig. 5). tional material from France. For unknown rea- sons, however, he preferred ranking longifoliae as status a subspecies of A. circularis. Lacourt (1978, 1985) briefly discussed the taxonomy of A. circularis and For reasons discussed below, these findings lead to accepted the status of A. longifoliae as a subspe- the conclusion that A. longifoliae and A. circularis cies. But in his overview of European Tenthre- have to be treated as different species, not as dinidae, Lacourt (1999) regarded A. longifoliae as synonyms or sub species. The follo wing taxono- a synonym of A. circularis without any discussion. mical change is propo sed therefore: Liston (1995) listed A. longifoliae as a separate Athalia longifoliae sp. revocata; stat. nov. species in his compendium of European sawflies, A. longifoliae is removed from synonymy with but Taeger et al. (26) in their list of European A. circularis and upgraded from A. circularis ssp. sawflies do not mention A. longifoliae. longifoliae. nistishe mededelingen 1 ‒ 29 Veronica longifolia l Athalia longifoliae vindplaats Duitsland Figure . Records of Athalia longifoliae in the Nether- Figure 5. Records of Athalia circularis in the Nether- lands and Germany, together with the known records lands. of Veronica longifolia. Source floron. Figuur 5. Vindplaatsen van Athalia circularis in Figuur . Vondsten van Athalia longifoliae in Nederland Nederland. en Duitsland, samen met de bekende vindplaatsen van lange ereprijs Veronica longifolia. Bron floron. characteristics of the A. CIRCULARIS from a Malaise trap in 1998 in ‘De Kaaistoep’ complex near the city of Tilburg, revealed that this Males and females of A. longifoliae largely resem- variation occurs within single populations of ble A. circula ris in their size, appearance and A. circularis. The material of A. longifoliae on the colour. Both taxa together can be distinguished other hand shows very little variation in this from the other northwestern European species respect. All specimes studied show a sharply of Athalia by the combination of entirely yellow bordered black mesopleural band, except for middle tibiae and a largely yellow first tergite. a single male with nearly entirely yellow meso- Moreover, most specimens of A. circularis/ longi- pleura. foliae can readily be recognized by a horizontal black band on the mesopleura (fig. 1, 2), whereas Apart from A. longifoliae and A. circularis, I have the mesopleura are either completely yellow or seen two females from the Netherlands with com- black in other Athalia species. In A. circularis this pletely black mesopleura. They resemble the third character may vary to some extent, as sometimes taxon of the A. circularis-complex that was distin- speci mens are found with the mesopleura nearly guished by Kontuniemi (1951) and Chevin (1969) black or enti rely yellow. The study of a series of as A. cordatoides Priesner, 1928 or A. circularis ssp. 8 ? and 11 / of A. circularis, collected by cordatoides. This taxon has been synonymized means of a Malaise trap in 199 in ‘De Brand’ with A. circularis by the authors mentioned in the near Udenhout (Mol 1996) and 7 ? and 8 / introduction as well. Judging from some small mol ‒ ATHALIA LONGIFOLIAE new for the netherlands and germany 5 Locality Date Co-ordinates Specimens The Netherlands Overijssel Gramsbergen, along river Vecht 26.vi.29 2.8-51. 1? .5 km S of Hardenberg, along river Vecht 2.vii.21 26.6-55.9 1 ? km S of Hardenberg, along river Vecht 2.vii.21 26.8-56.6 1 ? 2 km S of Hardenberg, along river Vecht 2.vii.21 26.9-57.2 2 ? Bridge near Hardenberg 2.vii.21 28.5-58.7 ? Bridge near Mariënberg, along river Vecht 2.vii.21 2.9-5.2 1 ? Railway bridge near Zwolle, along river Vecht 12.vii.2 28.-5. 1 ?, 1 / 2 km E of Dalfsen, along river Vecht 12.vii.2 215.8-52. 1 / Noord-Brabant Vught, along channel 1.vii.1997 17.-8.6 ? ‘s-Hertogenbosch, along canal 19.vii.1997 18.2-1. ? Sint-Michielsgestel, along river Dommel 1.vii.1997 152.-5.2 2 ? Gemonde near Sint-Michielsgestel, along river 1.v.1998 151.8-. ? Dommel and an isolated oxbow nearby 152.-. [idem] 19.vi.1997 [idem] ?, / [idem] 1.vii.1996 [idem] ?, 1 / [idem] 15.vii.1996 [idem] 11 ?, 5 / [idem] 18.viii.1996 [idem] ?, 2 / Boxtel, near crossing of highway A2 and railway 2.vii.1997 15.-99.1 1 ? Valley of river Dom mel, 2 km NE of Liempde 2.vi i.1997 155.2-99.2 ? [idem], 1.5 km E of Liempde 2.vii.1997 155.8-98.2 ? .5 km E of Liempde 27.vi.1998 157.6-97.8 ? Sint-Oedenrode, valley of river Dom mel 19.vi.1997 161.8-97. 1 ? [idem] 12.vi i.1997 [idem] ? 1.5 km south of Nijnsel, along river Dommel 12.vii.1997 162.-9.5 9 ?, 5 / Nederwetten, along river Dommel 18.vi ii.1996 16.6-89. ?, 2 / Germany Niedersachsen Nieder-grafschaft Bentheim, Laar, along river Vechte 26.vi.29 N 52º61.17’-E6º7.79’ 1 ? Table 1. Records of Athalia longifoliae in the Netherlands and Germany. All material leg. and col. A.W.M. Mol; the Dutch co-ordinates refer to the Dutch Amersfoort-grid. Tabel 1. Vindplaatsen van Athalia longifoliae in Nederland en Duitsland. Al het materiaal leg. en col. Ad Mol; de Nederlandse coördinaten in Amersfoortgrid. series of specimens I collected in the French and from the same population, it is not possible to Italian Alps, this synonymy may be unjustified. decide whether they really belong to this taxon However, as both Dutch specimes represent iso- or may be extreme dark specimens of A. circularis. lated records, without males or other females 6 nistishe mededelingen 1 ‒ 29 6 7 8 9 10 11 13 12 Figure 6-1. Male genitalia, 6. Athalia longifoliae overview, ventral view, 7-8. digitus and apical part volsella, 7. A. longifoliae, 8. A. circularis, 9-1. apex penis valve, ventral view, 9. A. longifoliae, 1. A. circularis., 11-1. Penis valve, lateral view. 11. Athalia longifoliae overview, 12-1. detail apex, 12. A. longifoliae, 1. A. circularis. Scale lines: .1 mm. Figure 6-1. Mannelijke genitalia, 6. Athalia circularis overzicht, onderzijde, 7-8. digitus en tophelft volsella, 7. A. longifoliae, 8. A. circularis, 9-1. apex penisvalve onderzijde, 9. A. longifoliae, 1. A. circularis 11-1. Penisvalve, zijaanzicht. 11. Athalia longifoliae overzicht, 12-1. detail apex, 12. A. longifoliae, 1. A. circularis. Maatstreepjes: ,1 mm. recognition view (fig. 9); in A. circularis the apex has more or Males of A. longifoliae and A. circu laris can be less parallel sides and a blunt apex (fig. 1). In lat- separated by the shape of the genitalia only. The eral view the apex of the penis valves is rounded most striking difference is found in the shape of in A.
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