Ophion kallanderi Johansson, 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 : 70-72

Ophion kallanderi Johansson sp. nov.

urn:lsid:zoobank.org:act:9D7922E7-EC2C-40EE-8CCD-FAF3739F463E

Figs 9I , 34

Diagnosis

Ophion kallanderi Johansson sp. nov., which according to the barcoding results ( Fig. 1 ) belongs to the Ophion parvulus aggregate, is one of the trickier Ophion species to identify. It is superficially similar to the species around Ophion slaviceki , but is easily distinguished by the shorter hind trochantellus, the right angled gap between the mandibular teeth, the lower number of flagellomeres and the strongly elongate second flagellomere. The latter character is only otherwise present in Ophion tenuicornis Johansson sp. nov. and Ophion scutellaris . The primary risk of confusion is with Ophion parvulus , Ophion paraparvulus Johansson sp. nov. and Ophion tenuicornis Johansson sp. nov., because of the very weakly sinuate radius in the female that sometimes can be perceived to be evenly curved. Another feature that is frequently present in O. kallanderi Johansson sp. nov., but frequently missing in the other species of the aggregate, is that the pleurosternal angles are more distinct and often slightly protruding ( Fig. 9I ). In all known specimens, the posterior transverse carina of the propodeum is widely interrupted or only weakly raised centrally, a feature otherwise only frequently occurring in Ophion paraparvulus Johansson sp. nov. within the O. parvulus aggregate. The best diagnostic character is, however, the shape of the flagellomeres. The second flagellomere is distinctly longer than in O. parvulus and O. paraparvulus Johansson sp. nov. and the apical flagellomeres are stouter than in O. tenuicornis Johansson sp. nov. Another distinguishing feature is the shape of the temples. In O. kallanderi Johansson sp. nov. the head is about 0.4–0.5 times as long as the compound eye in lateral view, while it is narrower, 0.3, in both O. paraparvulus and O. tenuicornis Johansson sp. nov. ( Table 1 ). The few known males have the radius evenly curved but are distinguished from the other species in the O. parvulus aggregate on the shape of the flagellomeres.

Etymology

This species is named in honor of the Swedish lepidopterologist Clas Källander who by donating a large number of Ophion specimens has contributed greatly to this study.

Material examined

14 ♀♀, 1 ♂ ( Sweden); 1 ♂ ( Great Britain); 5 ♀♀, 3 ♂♂ ( Lithuania).

Type material

Holotype

SWEDEN • ♀; Västmanland, Sala , 1.4 km W Sala Station; 59.922° N, 16.571° E; 22 Sep. 1974; S. Johansson leg.; MV-light; MZLU Type no. 6371:1.

Paratypes

SWEDEN • 1 ♀; same data as for holotype; 21 Sep. 1974; S. Johansson leg., MV-light; MZLU Type no. 6371:2 • 1 ♀; Västmanland, Fläckebo , 0.3 km NE Fläckebo church; 59.889° N, 16.359° E; 18 Sep. 1974; S. Johansson leg.; MV-light; MZLU Type no. 6371:3 • 1 ♀; Dalarna, Säterdalen, Näsåkerspussen ; 59.734° N, 17.720° E; 4–26 Aug. 2003; SMTP leg.; Malaise trap in alder swamp wood, (Trap id. 10, coll. ev id 399); NHRS-HEVA000008675 • 2 ♀♀; Gästrikland, Gävle, Grinduga ; 60.641° N, 17.299° E; 10–17 Sep. 2013; N. Ryrholm and C. Källander leg.; MV-light trap in mixed woodland/farmland; NHRS-HEVA000008676, NHRS-HEVA000008677 • 1 ♀; Skåne, Kullen, Brunkulla ; 56.301° N, 12.455° E; 24 Aug. 1975; C.-H. Lindroth leg.; MV-light; MZLU Type no. 6371:4 • 1 ♀; same data as for preceding; 22 Aug. 1974; C.-H. Lindroth leg.; MV-light; MZLU Type no. 6371:5 • 2 ♀ ♀; same data as for preceding; 28 Aug. 1975; C.-H. Lindroth leg.; MV-light; MZLU Type no. 6371:6 • 1 ♀; same data as for preceding; 31 Aug. 1974; C.-H. Lindroth leg.; MV-light; MZLU Type no. 6371:7 • 1 ♂; same data as for preceding; 28 Aug. 1974; C.-H. Lindroth leg.; MV-light; MZLU Type no. 6371:8 .

Description

Fore wing length 15 mm. Antenna with 47–50 flagellomeres. First flagellomere about 4.0–4.5 times as long as wide. Second flagellomere about 3.0 times as long as wide. Central flagellomeres about 2.0–2.5 times as long as wide. Subapical flagellomeres approximately 1.6–1.7 times as long as wide. Head relatively narrowed behind eyes, in lateral view temple 0.4–0.5 times as long as compound eye. Lateral ocellus touching compound eyes. In female the ocelli rather small, not covering the inner margin of compound eye in dorsal view. The distance between lateral ocelli about 0.5–0.6 times as wide as ocellus. Malar space about 0.2 times as long as mandibular base in female and about 0.4 times in male. Mandibular gape right-angled, with internal angles. Wing membrane clear. Ramellus usually quite short, reaching 0.2–0.4 times the width of the discosubmarginal cell. Radius weakly sinuate, sometimes even more or less straight in the basal part in the female and evenly curved in the male. Structure of mesopleuron shining or weakly shagreened with weaker, very regular punctation consisting of small punctures. Interstices between punctures about equal to their diameter up to two times their diameter. Epicnemial carina, in antero-ventral view, with pleurosternal angles obviously anterior to sternal angles. Pleurosternal angles acute, rarely right angled ( Fig. 9I ). Scutellum without lateral carinae (as in Fig. 6A ). Structure of propodeum similar to that of O. obscuratus , posterior to anterior transverse carina mostly shining. Anterior transverse carina complete, quite strongly raised. Posterior transverse carina usually only present laterally, widely interrupted centrally. Sclerotised part of first sternite ending level to spiracle. Central longitudinal carinae weak or absent. Hind trochantellus shorter than wide in dorsal view. Legs normal with hind femur 7.0 times as long as wide. Hind trochantellus shorter than in other similar species. Inner spur of hind tibia short, about 0.3 times as long as hind metatarsus. First sternite ending in level with spiracle (as in Fig. 6H ).

Colour

Body testaceous, inner and outer eye margins yellow. Mandibular teeth black. Ovipositor sheath testaceous.

DNA barcode

The DNA barcode sequences of one Swedish specimens of Ophion kallanderi Johansson sp. nov. is available at the BOLD systems database (www.boldsystems.org, Specimen code: STI-NJBC: 262).

Ecology

All specimens have been collected in woodlands during August–September.

Distribution in Sweden

Rare but probably overlooked in Central Sweden. Older records from Southern Sweden (MZLU) indicates a wider distribution.

Remarks

Despite the slightly sinuate radius and the more pronounced pleurosternal angles, this species is most likely a member of the O. parvulus aggregate. However the barcode sequence obtained was quite weak and the more detailed phylogenetic position is somewhat uncertain.

Figures

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. 34. Ophion kallanderi Johansson sp. nov., paratype, ♀ (MZLU 6371:5). Scale bar = 1 mm.

Fig. 1 (continued on next page). Phylogeny of Ophion Fabricius, 1798 as obtained from cytochrome oxidase 1 (COI) sequences. Maximum likelihood tree is shown with clade support including 234 Ophion and 3 outgroup specimens is shown based on 150 bootstrap iterations using the General Time Reversible model and analysed with MEGA-X. The sample ids “NJBC” refer to the BOLD database.

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.