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Ent20 3 295 298 Khalaim.P65 Russian Entomol. J. 20(3): 295298 © RUSSIAN ENTOMOLOGICAL JOURNAL, 2011 First record of the subfamilies Banchinae and Stilbopinae (Hymenoptera: Ichneumonidae) from the Late Eocene Rovno amber (Ukraine) Ïåðâàÿ íàõîäêà ïîäñåìåéñòâ Banchinae è Stilbopinae (Hymenoptera: Ichneumonidae) èç ïîçäíåýîöåíîâîãî ðîâåíñêîãî ÿíòàðÿ (Óêðàèíà) A.I. Khalaim À.È. Õàëàèì Zoological Institute, Russian Academy of Sciences, St. Petersburg 199034, Russia; Facultad de Ingenieria y Ciencias, Universidad Autónoma de Tamaulipas, Cd. Victoria 87149, Mexico. E-mail: [email protected] Çîîëîãè÷åñêèé èíñòèòóò Ðîññèéñêîé àêàäåìèè íàóê, Ñ.-Ïåòåðáóðã 199034, Ðîññèÿ; ôàêóëüòåò èíæåíåðèè è íàóêè, Àâòîíîìíûé óíèâåðñèòåò Òàìàóëèïàñ, Ñüþäàä Âèêòîðèÿ 87149, Ìåêñèêà. KEY WORDS: Ichneumonidae, Banchinae, Stilbopinae, Rovno amber, taxonomy, Eocene. ÊËÞ×ÅÂÛÅ ÑËÎÂÀ: Ichneumonidae, Banchinae, Stilbopinae, ðîâåíñêèé ÿíòàðü, ñèñòåìàòèêà, ýîöåí. ABSTRACT. A new ichneumonid genus Rovenosa families Banchinae and Stilbopinae have been discov- gen.n., with type species Rovenosa rasnitsyni sp.n. ered. (Stilbopinae), and Lissonota perkovskyi sp.n. (Banchi- The new species of Banchinae is a distinctive mem- nae) are described from the Late Eocene Rovno amber ber of the tribe Atrophini because it has nervellus of from Ukraine. These taxa are the first records of the the hind wing intercepted in its lower quarter and meta- subfamilies Banchinae and Stilbopinae in the Rovno somal tergites 24 evenly convex, without lateromedi- amber and the earliest records of the fossil representa- an oblique grooves. On the other hand, this species has tives of these subfamilies. the first tergite with complete dorsolateral carinae, the character state unknown among extant genera of Atro- ÐÅÇÞÌÅ. Íîâûé ðîä èõíåâìîíèä Rovenosa phini. This specimen could be placed within the large gen.n. ñ òèïîâûì âèäîì Rovenosa rasnitsyni sp.n. cosmopolitan genus Lissonota Gravenhorst, 1829, but (Stilbopinae) è Lissonota perkovskyi sp.n. (Banchinae) it differs from all known species of this genus by pres- îïèñàíû èç ïîçäíåýîöåíîâîãî ðîâåíñêîãî ÿíòàðÿ ence of the dorsolateral carinae of tergite 1 as well as Óêðàèíû. Ýòè òàêñîíû ÿâëÿþòñÿ ïåðâûìè íàõîäêà- by the distinct notaulus. ìè ïîäñåìåéñòâ Banchinae è Stilbopinae â ðîâåíñ- Another amber specimen belongs to the small sub- êîì ÿíòàðå è ñàìûìè ðàííèìè íàõîäêàìè èñêîïàå- family Stilbopinae by having metanotum with distinct ìûõ ïðåäñòàâèòåëåé ýòèõ ïîäñåìåéñòâ â öåëîì. sublateral triangular projection on its hind margin and a completely areolate propodeum with a strong costula. However, ovipositor of this specimen has a distinct Introduction dorsal subapical notch. This is unusual for that subfam- ily and therefore indicates an intermediate position of The Rovno amber is deposited in several assem- the species between the subfamilies Stilbopinae and blages situated to the North of Rovno City (Northwest Banchinae. Ukraine). It is chemically identical to the Late Eocene Stilbopinae comprise only three recent genera with Baltic amber (succinite) of approximately the same 24 described species, and they utilize members of the age, but differs by the composition of arthropod fauna. primitive lepidopteran family Incurvariidae as hosts In particular, the aquatic and subaquatic arthropods are [Kasparyan, 1999]. This subfamily is morphologically comparatively rare, while leaf-litter dwellers are very similar to Banchinae and formerly was considered as a abundant in the Rovno amber. These differences indi- tribe of the latter group [Townes, 1970]. Within Stil- cate the geographically different origin of the Baltic bopinae, this species resembles members of the genus and Rovno ambers [Perkovsky et al., 2007]. Panteles Förster, 1869 by having nervellus of the hind Of more than 50 examined specimens of the Rovno wing intercepted slightly below middle, fore wing with amber Ichneumonidae in the collection of the Institute an oblique areolet, and slightly elongate first tergite of Zoology of the National Academy of Sciences of with dorsomedian carinae developed in its basal 0.4 Ukraine (Kiev), two new species belonging to the sub- and almost complete dorsolateral carinae. On the other 296 A.I. Khalaim hand, ovipositor of this specimen with a dorsal subapi- dorsomedian carinae in its basal 0.4 and more or less cal notch as well as simple tarsal claws suggest that this complete dorsolateral carinae. Rovenosa gen.n. differs species does not belong to Panteles because all recent from Panteles by short ovipositor with developed dor- Stilbopinae have ovipositor without the dorsal notch. sal subapical notch, and by simple tarsal claws. This information confirms an isolated taxonomic posi- ETYMOLOGY. Based on the name of locality tion of the species from the Rovno amber, and this (Rovno), where the specimen was collected. Gender is specimen is therefore described below as a new genus feminine. and species. One fossil species of Banchinae, Lampronota dis- Rovenosa rasnitsyni sp.n. rupta Cockerell, 1921, was described from the Late Figs 13. Eocene Bembridge Marls (Isle of Wight, southern En- gland) [Cockerell, 1921]. Re-examination of the type TYPE MATERIAL. Holotype: female, No. K-4152. of this species has revealed that it belonged to another Well preserved complete ichneumonid wasp. subfamily [Khalaim, 2011, in press]. Certain species of DESCRIPTION. Female (holotype). Body length the Banchinae were also described by Brues [1910] about 5.5 mm, fore wing length about 3.75 mm. from the Florissant beds of Colorado (USA) which are Head globose, with large prominent eyes. Temple referred now to the uppermost Eocene [Evanoff et al., short, strongly narrowed behind eyes in dorsal view. 2001]. However, the general composition of the ich- Labial palpus short, 4-segmented. Maxillary palpus long neumonid fauna indicates its younger age if compared and slender. Mandible gradually narrowed towards apex, to that of the Baltic and Rovno ambers [Khalaim, 2008, upper tooth somewhat shorter than lower tooth. Malar 2011 (in press)]. All other records of the fossil Banchi- space much shorter than basal width of mandible (prob- nae belong to Oligocene or Miocene, and most of them ably about 0.3 times). Clypeus in lateral view strongly require revision (Menier et al., 2004). Fossil members convex, distinctly separated from face. Flagellum fili- of the subfamily Stilbopinae were unknown up to now. form, its basal and middle segments elongate, subapi- Types of both new taxa are deposited in the collec- cal segments distinctly transverse. tion of the Institute of Zoology of the National Acade- Notaulus well developed, sharp anteriorly. Upper my of Sciences of Ukraine (Kiev). end of prepectal carina reaching about level of lower corner of pronotum. Hind margin of metanotum with Taxonomic part sublateral triangular projection. Pleural carina com- plete. Propodeum with areola more than 2.5 times as long as broad. Mesoscutum, mesopleuron, metapleu- Subfamily Stilbopinae ron and probably propodeum densely granulate, with- out punctation. Rovenosa gen.n. Fore wing with areolet oblique and pointed above but without stalk (Fig. 1). Vein 2m-cu slightly inclivous, Type species: Rovenosa rasnitsyni sp.n. very weakly arcuate. Pterostigma moderately broad, DIAGNOSIS. Frons between antennal sockets flat, about 3.5 times as long as wide. Metacarp far short without crest or carina. Clypeus in lateral view strongly apex of fore wing. convex. Notaulus well developed. Sternaulus absent. Legs slender. Length of hind tibia 1.0 mm, of femur Hind margin of metanotum with sublateral triangular 1.28 mm, and of basitarsus 0.55 mm respectively. Hind projection. Submetapleural carina slightly raised ante- spurs almost straight, moderately long. riorly. Propodeum with complete carinae, costula strong. Ovipositor sheath about 1.2 mm long, distinctly Fore wing with pointed above and oblique areolet (Fig. shorter than hind tibia. 1). Hind wing with nervellus intercepted somewhat ETYMOLOGY. Named after the famous palaeon- below middle (Fig. 2). Tarsal claws small, not pecti- tologist and Hymenoptera expert Prof. A.P. Rasnitsyn nate. Metasoma cylindrical. Tergite 1 slightly elon- (Palaeontological Institute of the Russian Academy of gate, short and broad, roundly convex in lateral view; Sciences, Moscow, Russia). dorsomedian carinae developed in basal 0.4 of tergite; dorsolateral carinae almost reaching hind edge of terg- Subfamily Banchinae ite; spiracle situated in basal third of tergite just below dorsolateral carina. Tergites beyond first one short and Lissonota Gravenhorst, 1829 broad, strongly transverse, without lateromedian ob- lique grooves. Ovipositor robust, strongly compressed, This is a very large cosmopolitan genus with about with apex weakly upcurved, with narrow dorsal subap- 400 species which is best represented in the Holarctic ical notch (Fig. 3); sheath shorter than hind tibia. region [Townes, 1970; Yu et al., 2005]. All host records TAXONOMIC COMPARISON. The new genus is of the extant species of Lissonota belong to the con- similar to Panteles Förster in having nervellus of hind cealed Lepidoptera larvae living in stems, buds, rolled wing intercepted slightly below middle, fore wing with leaves, tunnels in fruits, and similar locations [Townes, oblique areolet, and first tergite slightly elongate, with 1970; Townes, Townes, 1978; Gauld et al., 2002]. First record of Banchinae and Stilbopinae from the Late Eocene Rovno amber 297 Figs 15. Rovenosa rasnitsyni gen. et sp.n. (female, holotype) (13) and Lissonota perkovskyi sp.n. (sex
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