Ophion brocki Johansson,
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: 54-56
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|Ophion brocki Johansson|
Ophion brocki Johansson sp. nov.
This species belongs to the Ophion mocsaryi aggregate and is distinguished from other Swedish species in this aggregate by the number of flagellomeres, the enlarged compound eyes, the deep groove behind the posterior ocelli, the nervellus being broken distinctly below the middle and the usually strong carination of the propodeum.
This species is named in honor of the British hymenopterist Jim Brock who, by his meticulous studies of the British fauna of Ophion , has contributed greatly to the taxonomy of the genus in Northwestern Europe and indirectly assisted in the definition of this species.
3 ♀♀, 11 ♂♂ ( Sweden); 1 ♂ ( Italy); 1 ♀, 1 ♂ ( Germany); 9 ♀♀, 25 ♂♂ ( Great Britain).
SWEDEN • 1 ♂; Blekinge, Karlskrona, Tullaretorpet ; 56.227° N, 15.647° E; 2–3 Jun. 2016; C. Philipsson leg.; MV-light trap in deciduous forest; STI-NJBC136; NHRS-HEVA000008631GoogleMaps • 1 ♂; Blekinge, Karlskrona, Tullaretorpet ; 56.227° N, 15.647° E; 23–24 May 2016; C. Philipsson leg.; MV-light trap in deciduous forest; STI-NJBC135; NHRS-HEVA000008632GoogleMaps • 1 ♀; Blekinge, Karlskrona, Tullaretorpet ; 56.227° N, 15.647° E; 28–29 May 2016; C. Philipsson leg.; MV-light trap in deciduous forest; STI- NJBC171; NHRS-HEVA000008633GoogleMaps • 1 ♀; Öland, Mörbylånga, Strandskogen ; 56.702° N, 16.494° E; 12 Jun. 2017; B. Andersson leg.; MV-light in garden close to deciduous forest; STI-NJBC173; NHRS- HEVA000008634GoogleMaps • 1 ♂; Blekinge, Karlskrona, Tullaretorpet ; 56.227° N, 15.647° E; 31 May–1 Jun. 2016; C. Philipsson leg.; MV-light trap in deciduous forest; STI-NJBC134; NHRS-HEVA000008635GoogleMaps • 1 ♂; Öland, Mörbylånga, Arontorp , Trollvägen ; 56.646° N, 16.516° E; T. Lindberg leg.; MV-light in garden close to deciduous forest; STI-NJBC132; NHRS-HEVA000008636GoogleMaps .
Fore wing length 15–16 mm. Antenna with 59–64 flagellomeres. First flagellomere 3.0 times as long as wide. Central flagellomeres stout, about 1.2–1.3 times as long as wide. Apical flagellomeres approximately 1.5 times as long as wide. Head quite narrowed behind eyes. Temple in lateral view 0.3–0.4 times as long as compound eye ( Fig. 15GView Fig). Space between compound eye and lateral ocellus narrow, at most 0.1 times the diameter of ocellus. Head in anterior view transverse with compound eye large ( Fig. 15DView Fig). Groove behind lateral ocellus usually very deep and distinct ( Fig. 15BView Fig). Occipital carina centrally evenly rounded, sometimes very weakly angled. Face below antennal sockets shagreened with scarce punctures. Malar space about 0.1 times as long as mandibular base in female and about 0.1–0.2 times in males. Mandibular gape right-angled, with internal angles. Wing membrane clear. Ramellus very long, reaching 0.4–0.5 the width of the discosubmarginal cell. Radius sinuous. Nervellus broken distinctly below the middle by the discoidella ( Fig. 13EView Fig). Mesopleuron shagreened with punctures quite dense, space between punctures about equal to their diameter. Epicnemial carina, in antero-ventral view, with pleurosternal angles level to or slightly anterior to sternal angles. Pleurosternal angles slightly acute or right angled. Scutellum without lateral carinae. Propodeum with very weak rugose structure, shining, with anterior and posterior transverse carina usually strongly raised ( Fig. 10CView Fig). In small males the anterior transverse carina is weak or absent laterally. Central and lateral longitudinal carinae usually strong, but sometimes lateral longitudinal carinae weaker. Sclerotised part of first sternite ending level to spiracle. Hind trochantellus shorter than wide in dorsal view. Legs normal with hind femur about six times as long as wide. Inner spur of hind tibia long about 0.4 times as long as hind metatarsus.
Body testaceous. Inner and outer eye margins sometimes yellow. Mandibular teeth black. Ovipositor sheath black or dark brown, contrasting in colour with posterior metasomal segments.
The DNA barcode sequences of eight Swedish specimens of Ophion brocki Johansson sp. nov. are available at the BOLD systems database (www.boldsystems.org, BIN. BOLD: AAW9160. Specimen codes: STI-NJBC: 32, 76, 132, 134–136, 171–172).
The taxonomic history of this species with frequent misidentifications makes it hard to draw any definitive conclusions regarding the host species and no rearing records are known. The main period of activity in Sweden seems to be early summer, May–June.
Distribution in Sweden
A very rare species known from two areas in the southeastern part of the country.
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