Ophion luteus ( Linnaeus, 1758 ), 2019

Johansson, Niklas & Cederberg, Björn, 2019, Review of the Swedish species of Ophion (Hymenoptera: Ichneumonidae: Ophioninae), with the description of 18 new species and an illustrated key to Swedish species, European Journal of Taxonomy 550, pp. 1-136 : 76-77

Ophion luteus ( Linnaeus, 1758) stat. rev.

Figs 6A, H , 10A , 14A

Ichneumon luteus Linnaeus, 1758: 566 .

Ophion distans Thomson, 1888: 1191 .

Material examined

Lectotype, ♂, of Ichneumon luteus ( LSL); lectotype, ♀, of Ophion distans ( MZLU); 53 ♀♀, 27 ♂♂ ( Sweden); 1 ♀ ( Estonia); 1 ♀ ( Norway).

Diagnosis

Fore wing length 12–15 mm. Antenna with 47–53 flagellomeres. First flagellomere about 4.0 times as long as wide. Central flagellomeres about 1.5–1.6 times as long as wide. Subapical flagellomeres approximately 1.5 times as long as wide. Temple buccate. Head in lateral view with temple about 0.8–0.9 times as long as compound eye in both females and males ( Fig. 14A ). Gap between compound eye and lateral ocellus always distinct, 0.3–0.4 times the diameter of ocellus. Ocelli small. Central ocellus in female in anterior view as wide as distance between central ocellus and inner eye margins. Malar space about 0.3–0.4 times as long as mandibular base in female and about 0.5 times in male. Mandibles often worn, usually with the gap between teeth acute angled and internal angles absent (as in Fig. 10I ), but specimens from coastal localities in Southern Sweden frequently with internal angles present. Wing membrane transparent. Ramellus usually short, reaching 0.1–0.3 times the width of the discosubmarginal cell. Radius sinuous. Structure of mesopleuron in most cases shining or weakly shagreened with distinct, very regular punctation consisting of small punctures. Interstices between punctures about equal to their diameter. Epicnemial carina, in antero-ventral view, with pleurosternal angles obviously anterior to sternal angles (as in Fig. 9E ). Pleurosternal angles rounded, obtuse to right angled. Scutellum without distinct lateral carinae ( Fig. 6A ). Propodeum posterior to anterior transverse carina mostly shining. Anterior transverse carina always present centrally anterior to area superomedia, but often also present laterally though rarely strongly raised. Posterior transverse carina usually only present laterally, widely interrupted centrally ( Fig. 10A ). Legs normal with hind femur about 6.0–6.5 times as long as wide. Hind trochantellus usually as long as wide in dorsal view (as in Fig. 7E ). Inner spur of hind tibia long about 0.3–0.4 times as long as first hind tarsal segment. Sclerotised part of first sternite ending level to spiracle ( Fig. 6H ).

Colour

Body testaceous. Mandibular teeth black. Head with inner and outer orbits yellow. Ovipositor sheath testaceous, concolourous with posterior metasomal segments.

DNA barcode

The DNA barcode sequences of 16 Swedish specimens of Ophion luteus are available at the BOLD systems database (www.boldsystems.org, BIN. BOLD: ACF9514. Specimen codes: STI-NJBC: 54, 58–61, 63, 65–69, 302, 322, 324, 326, 328).

Ecology

Ophion luteus is active in late spring and during early summer, May–June in a variety of habitats. Brock (1982) refers to a rearing from Actebia praecox .

Distribution in Sweden

Rare but widespread in Southern Sweden and the southern parts of Central Sweden.

Remarks

See Discussion: “The Ophion luteus aggregate”.

Figures

Fig. 6. A–D. Scutellum, dorsal view. A. Ophion luteus (Linnaeus, 1758). B. O. areolaris Brauns, 1889. C. O. inclinans Johansson sp. nov., holotype, ♀ (NHRS-HEVA000008667). D. O. dispar Brauns, 1895. E–H. Firsttergite, lateral view.E. O.inclinansJohanssonsp.nov.,holotype,♀ (NHRS-HEVA000008667). F. O. dispar. G. O. artemisiae Boie, 1855. H. O. luteus. I–J. Shape of male parameres, lateral view. I. Ophion sp. cf. pseudocostatus Meyer, 1935. J. O. artemisiae.

Fig. 10. Generalized carination of propodeum in females, posterodorsal view. A. Ophion luteus (Linnaeus, 1758)/O. scutellaris Thomson, 1888/O. obscuratus Fabricius, 1792. B. O. costatus Ratzeburg, 1848. C. O. brocki Johansson sp. nov., paratype, ♀ (NHRS-HEVA000008633). D. O. confusus Johansson sp. nov., holotype, ♀ (NHRS-HEVA000008637). E. O. crassicornis Brock, 1982. F. O. artemisiae Boie, 1855. G. O. ellenae Johansson sp. nov., paratype, ♀ (NHRS-HEVA000008655). H. O. perkinsi Brock, 1982. I. O. ocellaris Ulbricht, 1926. J. O. areolaris Brauns, 1889. K. O. dispar Brauns, 1895. L. O. tenuicornis Johansson sp. nov., paratype, ♀ (NHRS-HEVA000008743). M. O. longigena Thomson, 1888. N. O. brevicornis Morley, 1915. O. O. forticornis Morley, 1915.

Fig. 14. A–B. Head, dorsal view of female. A. Ophion luteus (Linnaeus, 1758). B. O. slaviceki Kriechbaumer, 1892. C–D. Propodeum, posterodorsal view. C. O. borealis Johansson sp. nov., holotype, ♀ (NHRS-HEVA000008627). D. O. crassicornis Brock, 1982. E–F. Head, anterior view of female. E. O. borealis Johansson sp. nov., holotype, ♀ (NHRS-HEVA000008627). F. O. crassicornis Brock, 1982.

Fig. 9. Epicnemial carina, antero-ventral view of female. A. Ophion splendens Johansson sp. nov., paratype, ♀ (NHRS-HEVA000008708). B. O. mocsaryi Brauns, 1889. C. O. dispar Brauns, 1895. D. O. parvulus Kriechbaumer, 1879. E. O. slaviceki Kriechbaumer, 1892. F. O. angularis Johansson & Cederberg sp. nov., paratype, ♀ (MZLU 6366:3). G. O. crassicornis Brock, 1982. H. O. areolaris Brauns, 1889. I. O. kallanderi Johansson sp. nov., paratype, ♀ (MZLU 6371:5).

Fig. 7. A–D. Occipital carina posterior view. A. Ophion confusus Johansson sp. nov., holotype, ♀ (NHRS-HEVA000008637). B. O. mocsaryi Brauns, 1889. C. O. ocellaris Ulbricht, 1926. D. O. areolaris Brauns, 1889. E–G. Hind trochanter and trochantellus dorsal view. E. O. slaviceki Kriechbaumer, 1892. F. O. obscuratus Fabricius, 1798. G. O. costatus Ratzeburg, 1848. H–I. Mandible ventral view. H. O. obscuratus. I. O. slaviceki. J–K. First tergite, aberration O. artemisiae Boie, 1855. J. Dorsal view. K. Lateral view. L–M. Head in posterior view showing generalized shape of occipital carina. L. O. obscuratus. M. O. variegatus Rudow, 1883. N–O. Central flagellomeres in males. N. O. obscuratus. O. O. variegatus.