Biodiversity Data Journal :
Taxonomic paper
|
A review of the subfamily Acaenitinae Förster, 1869 (Hymenoptera, Ichneumonidae) from Ukrainian Carpathians
Corresponding author:
Academic editor: Francisco Hita Garcia
Received: 06 Oct 2013 | Accepted: 08 Dec 2013 | Published: 10 Dec 2013
© 2013 Alexander Varga
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Varga A (2013) A review of the subfamily Acaenitinae Förster, 1869 (Hymenoptera, Ichneumonidae) from Ukrainian Carpathians. Biodiversity Data Journal 1: e1008. https://doi.org/10.3897/BDJ.1.e1008
|
Ichneumonid wasps of the subfamily Acaenitinae Förster, 1869 are reviewed for the first time from the Ukrainian Carpathians. Two species, Coleocentrus exareolatus Kriechbaumer, 1894 and C. heteropus Thomson, 1894 are new records for Ukraine. Arotes annulicornis Kriechbaumer, 1894 is considered to be a junior synonym of A. albicinctus Gravenhorst, 1829 (syn. nov.). A key to species of Coleocentrus of the Carpathians is provided.
Parasitoids, Ichneumonidae, Acaenitinae, Ukraine, new records, new synonymy
The subfamily Acaenitinae Förster, 1869 worldwide includes about 344 species placed in 27 genera, 8 genera and 42 species of which are found in the Western Palaearctic (
Rather little is known of the biology of acaenitines. Some Acaenitini are koinobiont endoparasitoids (
The Ukrainian Carpathians are part of the Eastern Carpathians mountain chain and rise in the west of Ukraine within the Lviv, Ivano-Frankivsk, Transcarpathian and Chernivtsi regions. The Carpathians of Ukraine extend from north-west to south-east as a stripe 270 km in length and 100-110 km in width. The Ukrainian Carpathians have an average height of 1000 m and the highest point is 2061 m a.s.l., with relatively soft rocks. Such high-altitude zones as foothill oak forest zone (300–400 m a.s.l.), beech forest zone (400–1300 m a.s.l.), coniferous boreal forest zone (900–1600 m a.s.l.), subalpine and alpine zone (1400–2061 m a.s.l.) can be recognised.
The Acaenitinae fauna of Ukraine is poorly studied. Up to now, there are only 10 recorded species (
This study is mainly based on specimens collected by standard sweep netting in various locations in the Ukrainian Carpathians in 2009-2013. The material deposited in the collection of the Vasyl Stefanyk Precarpathian National University in Ivano-Frankivsk was also studied. The ovipositor‑hind tibia index (in text OTI), which is the length of the ovipositor projecting beyond the apex of the metasoma divided by the length of the hind tibia, is used. Terminology was
HNHM: Hungarian Natural History Museum, Hungary;
ZMLU: Lunds Universitet, Zoologiska Institutionen, Sweden;
ZIN: Zoological Institute, Russian Academy of Sciences, Russia.
This genus is characterized by the combination of the following characters: clypeus transverse and basally flat, with transverse ridge, supra-antennal area with crest between antennal sockets, propodeum with well definded carinae, claws of all tarsi with appressed acute tooth, fore wing with areolet absent, intercubitus distal to vein 2m-cu, first metasomal tergite with white long setae on lateral and ventral parts.
Arotes annulicornis Kriechbaumer, 1894, syn. nov.
Fore wing 13 mm long. Nervellus broken near the middle. Mandible with lower tooth longer than upper tooth. Flagellum with 37 segments. Head polished, face and partly clypeus with median longitudinal wrinkles. In dorsal view temples parallel behind eyes. Notauli strong. Mesopleuron, metapleuron, scutellum, mid and hind coxa and hind femur densely and clearly punctate. Metasoma polished, without well defined punctation. OTI 2.3. Hind femur robust.
Female. Head, mesosoma and metasoma black. Coloration of first and second tergites varies (see "Taxon discussion") (Fig.
Male. Coloration as in female, but differs by face, tegula entirely andpedicel partly yellow. Flagellum yellow ventrally, without white ring. First and second tergites with wide apical light stripes (Fig.
Albania (
Plagionotus (
The main distinguishing characters, between A. albicinctus Gravenhorst, 1829 and A. annulicornis Kriechbaumer, 1894, given by various authors are the coloration of the first and second tergites of metasoma, which are entirely black in A. annulicornis Kriechbaumer, 1894 and light-coloured posteriorly in A. albicinctus Gravenhorst, 1829, and pterostigma, which is reddish centrally in A. annulicornis Kriechbaumer, 1894 and entirely fuscous in A. albicinctus Gravenhorst, 1829.
My examination of the holotype of A. annulicornis Kriechbaumer, 1894, which is deposited at HNHM, demonstrated that the first and the second tergites have light-coloured (though very weak) posterior margins. The three of metioned above females (collected in the same locality) have first and second tergites varies from entirely black to white-striped. The coloration of the pterostigma is also varies in the studied specimens: from yellowish-brown centrally with fuscous margins to entirely fuscous. The ovipositorial sheaths are as long as the body in the specimens with black tergites, so no evident differences between the two species, A. annulicornis Kriechbaumer, 1894 and A. albicinctus Gravenhorst, 1829, may be found. A. annulicornis Kriechbaumer, 1894 is therefore a junior synonym (syn. nov.).
The another European species, A. ustulatus Kriechbaumer, 1894, differs from A. albicinctus Gravenhorst, 1829 in coloration of legs (which are red except coxae) and in the possession of a fuscous spot on the apex of the fore wing.
This genus is characterized by the combination of the following characters: clypeus transverse and basally flat, apex with median tubercle, supra-antennal area without crest between antennal sockets, epicnemial carina absent, propodeum with carinae varying from complete to absent (usually only dorsal longitudinal carinae), claws of fore and mid tarsi simple, fore wing with areolet present (petiolate triangular) or absent; if absent (C. exareolatus Kriechbaumer, 1894), then intercubitus basal to vein 2m-cu, tergites 2–3 of metasoma with basolateral grooves, male parameres with ventral emargination.
Fore wing 17 mm long (in female) and 12-14 mm long (in male), areolet absent. Nervellus broken at upper 0.25. Mandible with equal teeth or lower tooth slighty longer than upper tooth. Flagellum with 37-38 segments. Head polished. In dorsal view temples parallel to narrowed behind eyes. Propodeum with weak apical carina. Metasoma matt, without well defined punctation. OTI 2.7.
Female. Head and mesosoma black. Clypeus basally black, apically brownish. Mandibles black. Flagellum brownish. Pterostigma yellowish. Tegula yellow. Legs generally red, fore and mid tibia and tarsus yellowish-red, hind tibia and tarsus fuscous. Metasoma black with narrow apical white bands on tergites.
Male. Head and mesosoma black. Face and clypeus black. Mandibles black. Flagellum black. Scape and pedicel yellow dorsally. Pterostigma yellowish. Tegula yellow. Legs: hind coxa red, fore and mid coxae, trochanters and trochantelli, tibiae and fore tarsus yellow, fore and mid femora, hind trochanter and trochantellus yellowish-red, hind tibia and tarsus fuscous. Metasoma black with narrow apical white bands on tergites.
Belarus (
Unknown.
The female of another European species with fore wing without areolet, C. soldanskii Bischoff, 1915, has black coxae and two yellow spots on the lower part of face.
Fore wing 18-20 mm long (in female) and 13-14 mm long (in male), areolet present. Nervellus broken at upper 0.25. Mandible with equal teeth or lower tooth slightly longer than upper tooth. Flagellum with 39-40 segments (in female) and 40-44 segments (in male). Head polished, sparsely punctate. In dorsal view temples slighty narrowed to slighty widened behind eyes. Mesopleuron densely rugulo-punctate (in female) or with unclear punctation (in male). Propodeum with weak longitudinal carinae over about 0.6-0.7 of its length (in male) or only with weak traces of dorsal longitudinal carinae (in female). Metasoma polished, without well defined punctation. OTI 2.6–2.8.
Female. Head, mesosoma and metasoma black. Face black with two yellow spots. Clypeus basally black, apically sometimes dark-brownish. Mandibles black. Flagellum black. Scape and pedicel reddish dorsally. Pterostigma yellow. Tegula yellow. Legs: hind coxa black, fore and mid coxae black with red apex, all trochanters and trochantelli yellowish-red, all femora, fore and mid tibiae and tarsi red, hind tibia fuscous, tarsomere 1 of hind tarsus partly, tarsomeres 2-5 entirely white. Metasoma black with narrow apical white bands on tergites.
Male. Head and mesosoma black. Face yellow with black central vertical stripe. Clypeus basally black, apically brown. Mandibles black. Flagellum dark-brownish. Scape and pedicel yellow dorsally. Pterostigma yellow. Tegula yellow. Legs: hind coxa black, sometimes reddish in apical 0.2, fore and mid coxae yellowish-red with black base, fore and mid femora, hind trochanter and trochantellus yellowish-red, hind femur and tibia red, fore and mid trochanters and trochantelli, tibiae and fore tarsus, tarsomere 1 of hind tarsus partly, tarsomeres 2-5 entirely white. Metasoma black basally and apically, red medially.
Trans-Palaearctic species: Belarus (
Acalolepta luxuriosus (Bates, 1873), Ergates faber (Linnaeus, 1761), Monochamus grandis (Waterhaus, 1881) (Cerambycidae) (
The female of C. croceicornis (Gravenhorst, 1829) is similar to this species, but has yellow flagellum with black base and entirely reddish hind legs. The male of C. excitator (Poda, 1761) is similar to the male of C. soleatus (Gravenhorst, 1829), but the last one has red with black coloration hind trochanters and trochantelli, entirely yellow face and only tarsomeres 3-5 of hind tarsus entirely white.
Fore wing 14-15 mm long (in female) and 9-13 mm long (in male), areolet present. Nervellus broken at upper 0.25. Mandible with equal teeth. Flagellum with 33 segments (in female) to 38 segments (in male). Head polished, without well definded punctation. In dorsal view temples parallel to slighty widened behind eyes. Mesopleuron densely rugulo-punctate. Propodeum only with weak traces of area apicalis or without carinae. Metasoma matt, without well defined punctation. OTI 2.5.
Female. Head, mesosoma and metasoma black. Face black with two small yellow spots or almost black. Clypeus from reddish to dark-brownish. Mandible black. Flagellum almost black. Pterostigma brownish with fuscous margins. Tegula red-yellowish. Legs generally red, all coxae from at least black basally (holotype). to black with only red apex, hind tibia and tarsus fuscous.
Male. Head, mesosoma and metasoma black. Face almost yellow. Clypeus red-brownish. Mandibles black. Flagellum black. Scape yellow dorsally. Pterostigma brownish with fuscous margins. Tegula yellow. Legs: all coxae black basally, apically yellowish-red, fore and mid legs except coxae, hind trochanter and trochantellus yellowish-red, hind femur red, hind tibia and tarsus fuscous.
Finland (
Unknown.
The female of C. caligatus Gravenhorst, 1829 is similar to this species, but has entirely red hind coxae and more developed carinae of the propodeum. Male of C. heteropus Thomson, 1894 is similar to C. croceicornis (Gravenhorst, 1829), but the last one has reddish pterostigma and yellow flagellum (with dark base).
Fore wing 11 mm long (in female) and 12 mm long (in male), areolet present. Nervellus broken at upper 0.25. Mandible with equal teeth. Flagellum with 31 segments (in female) and 33 segments (in male). Head polished, without well definded punctation. In dorsal view temples narrowed behind eyes. Mesopleuron weakly (in female) or densely (in male) rugulo-punctate. Propodeum with very weak longitudinal carinae over its entire length (in male) or only with weak traces of dorsal longitudinal carinae (in female). Metasoma mat (in female) or polished (in male), without well defined punctation. OTI 1.8.
Female. Head, mesosoma and metasoma generally black. Face almost black. Clypeus black basally, reddish apically. Mandibles reddish basally. Flagellum almost black. Pterostigma brownish with fuscous margins. Tegula reddish-brown. Legs: mid coxae almost black, fore and hind coxae generally red, fore coxa basally, hind coxa apically (0.2) black, all femora, fore and mid tibiae and tarsi red, hind tibia apically and tarsus entirely fuscous, all trochanters and trochantelli red with black coloration. Lateral parts of apical margins of tergites 2-6 red.
Male. Head and mesosoma black. Face almost yellow. Clypeus basally black, apically reddish. Mandibles black. Flagellum reddish-brown. Scape yellowish dorsally. Pterostigma yellowish. Tegula reddish-brown. Legs: hind coxa red with only apical 0.2 black, fore and mid coxae, fore trochanter and trochantellus and all femora red, mid and hind trochanters and trochantelli red with black coloration, fore tibia and tarsus, tarsomere 2 of hind tarsus partly, tarsomeres 3-5 entirely white, mid tibia and tarsus yellowish-red, hind tibia red with fuscous apex. Metasoma black basally and apically, red medially.
Bulgaria (
Unknown.
This genus is characterized by the combination of the following characters: clypeus transverse and basally flat, apex with median tubercle, supra-antennal area with crest between antennal sockets, notauli strong, hing femora very thick claws of fore and mid tarsi with appressed acute tooth near apex, fore wing with areolet absent, intercubitus basal to vein 2m-cu.
Female. Fore wing 8 mm long. Nervellus broken at upper third. Mandible with upper tooth a little longer than lower tooth. Flagellum with 23 segments. Head strongly rugulo-punctate. In dorsal view temples narrowed behind eyes. Malar space with subocular groove. Mesopleuron polished, densely and clearly punctate. Head and mesosoma black. Clypeus and mandibles black. Flagellum red-brown, scape and pedicel black. Pterostigma fuscous. Legs: all coxae black, trochanters red and trochantelli, hind femur and basal half of first tergite black, hind tibia and tarsus fuscous, fore and mid femora, tibiae, tarsi and metasoma red.
Albania (
Phytoecia cephalotes Küster, 1846, Ph. coerulescens (Scopoli, 1763) (Cerambycidae) (
There are another three species of this genus recorded so far from Ukraine, including Ph. terebrator (Scopoli, 1763) with black metasoma and red hind femora, Ph. nigripennis (Gravenhorst, 1829) with only tergites 2-4 partly red, Ph. saltans (Gravenhorst, 1829) which has prepectal carina long, almost reaching subtegular ridge.
Key to species of Coleocentrus in Carpathians |
||
1 | Areolet absent. Hind coxa red. Face of both sexes entirely black (Fig. |
C. exareolatus Kriechbaumer, 1894 |
– | Areolet present. Hind coxa red to black. At least face of males partly yellow | 2 |
2 | Females | 3 |
– | Males | 8 |
3 | Hind trochanter and trochantellus red or yellowish-red | 4 |
– | Hind trochanter and trochantellus red with black coloration (Fig. |
7 |
4 | Apical tarsomeres of hind tarsus white. Hind coxa black. Hind trochanter and trochantellus yellowish-red (Fig. |
C. excitator (Poda, 1761) |
– | Hind tarsus reddish to fuscous. Hind coxa red to partly black. Hind trochanter and trochantellus red | 5 |
5 | Hind tarsus reddish. Hind coxa red. Flagellum yellowish with black base | C. croceicornis (Gravenhorst, 1829) |
– | Hind tarsus at least apically fuscous. Hind coxa red to partly black. Flagellum black | 6 |
6 | Hind tarsus fuscous apically. Hind coxa red. Propodeum with well defined longitudinal carinae and apical transverse carina | C. caligatus Gravenhorst, 1829 |
– | Hind tarsus entirely fuscous. Hind coxa at least black basally (Fig. |
C. heteropus Thomson, 1894 |
7 | All trochanters black. Pterostigma fuscous (except base). Clypeus black. Lateral parts of apical margins of tergites 3-6 red | C. borcei Constantineanu, 1929 |
– | At least fore trochanter partly red. Pterostigma reddish centrally. Clypeus apically red. Lateral parts of apical margins of tergites 2-6 red | C. soleatus (Gravenhorst, 1829) |
8 | Face black, with only inner margins of eyes yellow. Pterostigma reddish. Flagellum yellowish | C. croceicornis (Gravenhorst, 1829) |
– | Face yellow, at most with nurrow central vertical black stripe. Pterostigma yellowish or fuscous. Flagellum reddish-brown to black | 9 |
9 | Hind tarsus fuscous at least apically. Metasoma entirely black | 10 |
– | Apical tarsomeres of hind tarsus white. Metasoma red centrally | 11 |
10 | Hind coxa black basally. Hind tibia and tarsus entirely fuscous | C. heteropus Thomson, 1894 |
– | Hind coxa black apically. Hind tibia and tarsus red, fuscous apically | C. caligatus Gravenhorst, 1829 |
11 | Hind trochanter and trochantellus yellowish-red. Hind coxa black at least in basal 0.8. Face yellow with black central vertical stripe (Fig. |
C. excitator (Poda, 1761) |
– | Hind trochanter and trochantellus red with black coloration. Hind coxa black at most in apical 0.2. Face entirely yellow (Fig. |
C. soleatus (Gravenhorst, 1829) |
Coleocentrus. Face of male (frontal view) and hind coxa, trochanter and trochantellus of female (lateral view).
The author would like to express his sincere thanks to D. R. Kasparyan (ZIN) for providing comparative material, Christer Hansson (ZMLU) and Zoltán Vas (HNHM) for sending high-quality photos of the holotypes of C. heteropus Thomson, 1894 and A. annulicornis Kriechbaumer, 1894 respectively, to Alex Gumovsky (Schmalhausen Institut of zoology NASU) for the discussion of an earlier version of the manuscript, Alexey Reshchikov (Swedish Museum of Natural History), Rikio Matsumoto (Osaka Museum of Natural History), Francisco Hita Garcia (Zoological Research Museum Koenig) for reviewing of the manuscript and Gavin Broad (Natural History Museum, London) for his helpful suggestions and correction of the English text.