Neoxorides montanus Oehlke 1966
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| author | Johansson, Niklas Klopfstein, Seraina |
| author_facet | Johansson, Niklas Klopfstein, Seraina |
| contents | <p><b><i>Neoxorides montanus</i> Oehlke, 1966</b></p><p>Figs 5G, 9C, F–G</p><p><i>Neoxorides montanus</i> Oehlke, 1966: 889–890, fig. 3.</p><p><i>Neoxorides montanus</i> – Kasparyan 1981: 94.</p><p><b>Diagnosis</b></p><p><i>Neoxorides montanus</i> is a species that is quite variable in size, with a fore wing length of 9–14 mm, on average slightly larger than <i>N. collaris</i>. The metasoma in the female is more elongate with the first tergite about 2.5 times as long as wide (Fig. 9F). The ovipositor in the female is usually as long as the metasoma and quite narrow and weak. In mounted specimens it is usually curved downwards, sinuate or curled up due to this weakness. The mid coxae in both sexes are largely yellow apically. The whitish spots along the inner orbits above the antennal scrobes are large and rounded in females (Fig. 9C) and the white lines on the sides of the pronotum are wide, usually as wide as the width of the fore femur (Fig. 5G). <i>Neoxorides montanus</i> is most similar to <i>N. collaris</i> and <i>N. striatus</i> sp. nov., but is distinguished by the characters given in the key to species and Table 2.</p><p><b>Material examined</b></p><p><b>Holotype</b></p><p>CZECH REPUBLIC • ♂; ZMHB.</p><p><b>Paratypes</b></p><p>GERMANY • 3 ♀♀; ZMHB • 1 ♂; NHRS.</p><p><b>Other material</b></p><p>SWEDEN • 6 ♀♀, 2 ♂♂; MZLU, NJ, LW.</p><p>FINLAND <b>•</b> 4 ♀♀, 11 ♂♂; MZH.</p><p>FRANCE • 2 ♀♀, 2 ♂♂; NHMUK.</p><p>GERMANY • 3 ♀♀, 3 ♂♂; MR, NHMUK, MZH.</p><p>UKRAINE • 1 ♀; OV.</p><p><b>Ecology</b></p><p><i>Neoxorides montanus</i> is connected to cerambycids feeding on conifers. It has been reared from larch along with the cerambycid <i>Tetropium gabrieli</i> Weise, 1905 (first author pers. obs.). Most records are from spruce <i>Picea abies</i> (L.) H.Karst. dominated forests, which possibly might indicate that the main hosts are <i>Tetropium fuscum</i> (Fabricius, 1787) and/or <i>T. castaneum</i> (Fabricius, 1787) (Kenis & Hilszczański 2004).</p><p><b>Distribution and status in Sweden</b></p><p>Most records are from the southern and central parts of the country, but it can probably be expected to occur also up in the north. Go, Hs, Sm.</p><p><b>Remarks</b></p><p>Among the distinguishing characters used to define and describe <i>N. montanus</i>, the relative length of the basal flagellomeres in the female and the shape of the male genitalia seem to be of limited use. According to the original description, the female of <i>N. collaris</i> is said to have the second flagellomere at most 5.2 times as long as wide while it is at least 5.5 times as long as wide in <i>N. montanus</i>. Given the natural variation in the shape of the flagellomeres (which are often oval in cross section) often amplified during preparation and preservation, this small difference is of no practical significance. The male of <i>N. montanus</i> usually has the parameres (and the hind margins of the tergites) more weakly sclerotized than in <i>N. collaris</i> and <i>N. striatus</i> sp. nov., which often makes them heavily deformed during storage or preparation. Newly hatched specimens or specimens of other species stored in ethanol also often display this deformation, making it hard to draw any definitive conclusions from the shape of the genitalia. We, therefore, recommend that the shape of the parameres is only used in combination with other characters. Apart from the shape of the male genitalia and the shape of the flagellomeres, the only diagnostic character used in the original description is the relative length of the metasomal segments. This seems to be a quite consistent character, but one should be aware that overlap frequently occurs with <i>N. striatus</i> sp. nov. and even <i>N. collaris</i>. During this study, it was also noted that the males of <i>N. nitens</i> and also <i>N. striatus</i> sp. nov. seem to be rather variable regarding the length of the metasomal segments (Fig. 5 E–F). Both the holotype of <i>N. montanus</i> (Oehlke 1966) and the lectotype of <i>N. collaris</i> (Jałoszyński & Wanat 2014) are males, and this variation regarding the relative length of the metasoma could present a problem regarding the identity of the type specimens. However, all males of <i>N. collaris</i> studied by the first author have stouter metasoma, and all males of <i>N. montanus</i> have the more slender form, which indicates that these aberrant forms are rare. The additional colour characters of the lectotype of <i>N. collaris</i> and the holotype of <i>N. montanus</i>, respectively, i.e., the shape of the white spots along the inner orbits above the antennal scobes, also supports the validity of each species.</p><p><b>DNA barcode</b></p><p>The barcode of this species is separated from its closest barcode (in <i>N. striatus</i> sp. nov.) by 4.6% p-distance. The sequence is available on GenBank under accession number: MT 072691 (SK19_37).</p> |
| format | Recurso digital |
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| publishDate | 2020 |
| publisher | Zenodo |
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| spellingShingle | Neoxorides montanus Oehlke 1966 Johansson, Niklas Klopfstein, Seraina Biodiversity Taxonomy Animalia Arthropoda Insecta Hymenoptera Ichneumonidae Neoxorides Neoxorides montanus <p><b><i>Neoxorides montanus</i> Oehlke, 1966</b></p><p>Figs 5G, 9C, F–G</p><p><i>Neoxorides montanus</i> Oehlke, 1966: 889–890, fig. 3.</p><p><i>Neoxorides montanus</i> – Kasparyan 1981: 94.</p><p><b>Diagnosis</b></p><p><i>Neoxorides montanus</i> is a species that is quite variable in size, with a fore wing length of 9–14 mm, on average slightly larger than <i>N. collaris</i>. The metasoma in the female is more elongate with the first tergite about 2.5 times as long as wide (Fig. 9F). The ovipositor in the female is usually as long as the metasoma and quite narrow and weak. In mounted specimens it is usually curved downwards, sinuate or curled up due to this weakness. The mid coxae in both sexes are largely yellow apically. The whitish spots along the inner orbits above the antennal scrobes are large and rounded in females (Fig. 9C) and the white lines on the sides of the pronotum are wide, usually as wide as the width of the fore femur (Fig. 5G). <i>Neoxorides montanus</i> is most similar to <i>N. collaris</i> and <i>N. striatus</i> sp. nov., but is distinguished by the characters given in the key to species and Table 2.</p><p><b>Material examined</b></p><p><b>Holotype</b></p><p>CZECH REPUBLIC • ♂; ZMHB.</p><p><b>Paratypes</b></p><p>GERMANY • 3 ♀♀; ZMHB • 1 ♂; NHRS.</p><p><b>Other material</b></p><p>SWEDEN • 6 ♀♀, 2 ♂♂; MZLU, NJ, LW.</p><p>FINLAND <b>•</b> 4 ♀♀, 11 ♂♂; MZH.</p><p>FRANCE • 2 ♀♀, 2 ♂♂; NHMUK.</p><p>GERMANY • 3 ♀♀, 3 ♂♂; MR, NHMUK, MZH.</p><p>UKRAINE • 1 ♀; OV.</p><p><b>Ecology</b></p><p><i>Neoxorides montanus</i> is connected to cerambycids feeding on conifers. It has been reared from larch along with the cerambycid <i>Tetropium gabrieli</i> Weise, 1905 (first author pers. obs.). Most records are from spruce <i>Picea abies</i> (L.) H.Karst. dominated forests, which possibly might indicate that the main hosts are <i>Tetropium fuscum</i> (Fabricius, 1787) and/or <i>T. castaneum</i> (Fabricius, 1787) (Kenis & Hilszczański 2004).</p><p><b>Distribution and status in Sweden</b></p><p>Most records are from the southern and central parts of the country, but it can probably be expected to occur also up in the north. Go, Hs, Sm.</p><p><b>Remarks</b></p><p>Among the distinguishing characters used to define and describe <i>N. montanus</i>, the relative length of the basal flagellomeres in the female and the shape of the male genitalia seem to be of limited use. According to the original description, the female of <i>N. collaris</i> is said to have the second flagellomere at most 5.2 times as long as wide while it is at least 5.5 times as long as wide in <i>N. montanus</i>. Given the natural variation in the shape of the flagellomeres (which are often oval in cross section) often amplified during preparation and preservation, this small difference is of no practical significance. The male of <i>N. montanus</i> usually has the parameres (and the hind margins of the tergites) more weakly sclerotized than in <i>N. collaris</i> and <i>N. striatus</i> sp. nov., which often makes them heavily deformed during storage or preparation. Newly hatched specimens or specimens of other species stored in ethanol also often display this deformation, making it hard to draw any definitive conclusions from the shape of the genitalia. We, therefore, recommend that the shape of the parameres is only used in combination with other characters. Apart from the shape of the male genitalia and the shape of the flagellomeres, the only diagnostic character used in the original description is the relative length of the metasomal segments. This seems to be a quite consistent character, but one should be aware that overlap frequently occurs with <i>N. striatus</i> sp. nov. and even <i>N. collaris</i>. During this study, it was also noted that the males of <i>N. nitens</i> and also <i>N. striatus</i> sp. nov. seem to be rather variable regarding the length of the metasomal segments (Fig. 5 E–F). Both the holotype of <i>N. montanus</i> (Oehlke 1966) and the lectotype of <i>N. collaris</i> (Jałoszyński & Wanat 2014) are males, and this variation regarding the relative length of the metasoma could present a problem regarding the identity of the type specimens. However, all males of <i>N. collaris</i> studied by the first author have stouter metasoma, and all males of <i>N. montanus</i> have the more slender form, which indicates that these aberrant forms are rare. The additional colour characters of the lectotype of <i>N. collaris</i> and the holotype of <i>N. montanus</i>, respectively, i.e., the shape of the white spots along the inner orbits above the antennal scobes, also supports the validity of each species.</p><p><b>DNA barcode</b></p><p>The barcode of this species is separated from its closest barcode (in <i>N. striatus</i> sp. nov.) by 4.6% p-distance. The sequence is available on GenBank under accession number: MT 072691 (SK19_37).</p> |
| title | Neoxorides montanus Oehlke 1966 |
| topic | Biodiversity Taxonomy Animalia Arthropoda Insecta Hymenoptera Ichneumonidae Neoxorides Neoxorides montanus |
| url | https://doi.org/10.5281/zenodo.4329271 |