Ophion tenuicornis 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: 104-106

publication ID

https://doi.org/10.5852/ejt.2019.550

publication LSID

lsid:zoobank.org:pub:F8707194-B55E-48CA-8FE0-4CD0D023C217

DOI

http://doi.org/10.5281/zenodo.3476999

persistent identifier

http://treatment.plazi.org/id/C1A3799F-344E-49E3-AA66-3083A9D3FF27

taxon LSID

lsid:zoobank.org:act:C1A3799F-344E-49E3-AA66-3083A9D3FF27

treatment provided by

Plazi

scientific name

Ophion tenuicornis Johansson
status

sp. nov.

Ophion tenuicornis Johansson   sp. nov.

urn:lsid:zoobank.org:act:C1A3799F-344E-49E3-AA66-3083A9D3FF27

Figs 8C View Fig , 10L View Fig , 13A View Fig , 44 View Fig

Diagnosis

Ophion tenuicornis Johansson   sp. nov. is one of the species in an aggregate previously treated under the name Ophion parvulus   . Ophion tenuicornis Johansson   sp. nov. is easily distinguished from the other species in the aggregate currently known from Sweden by the more elongate and strongly pilose flagellomeres, and from O. costatus   and O. parvulus   also by the considerably narrower temple in lateral view.

Etymology

The species has very slender antennae.

Material examined

> 100 ♀♀, 27 ♂♂ ( Sweden); 3 ♀♀ ( Germany); 1 ♀, 6 ♂♂ ( Norway); 3 ♀♀ ( Lithuania).

Type material

Holotype

SWEDEN • ♀; Öland , Mörbylånga, Strandskogen; 56.702° N, 16.494° E; 7 Sep. 2016; B. Andersson leg.; MV-light in garden on sandy soil close to deciduous forest; STI-NJBC252; NHRS-HEVA000008727. GoogleMaps  

Paratypes

SWEDEN • 2 ♀♀; Uppland, Rådmansö, Strömsborg ; 59.711° N, 18.962° E; 14 Aug.–7 Sep. 2016; N. Ryrholm and C. Källander leg.; MV-light trap in coastal mixed forest; STI-NJBC243, STI-NJBC248; NHRS-HEVA000008728, NHRS-HEVA000008729 GoogleMaps   1 ♀; Uppland, Norrtälje, Väddö Skjutfält ; 59.939° N, 18.914° E; 4 Sep.–16 Oct. 2016; N. Ryrholm and C. Källander leg.; Military shooting range, MV-light trap; STI-NJBC244; NHRS-HEVA000008730 GoogleMaps   1 ♀; Skåne, Ystad, Spraggehusen ; 55.442° N, 14.246° E; 29 Jul.–28 Aug. 2016; N. Ryrholm and C. Källander leg.; MV-light trap in sanddunes; STI- NJBC245; NHRS-HEVA000008731 GoogleMaps   1 ♀; Gotland, Öja, Gisle ; 57.049° N, 18.289° E; 29 Sep.–23 Oct. 2007; N. Ryrholm and C. Källander leg.; MV-light trap; STI-NJBC246; NHRS-HEVA000008732 GoogleMaps   1 ♀; Gotland, Sundre, Suders ; 56.945° N, 18.303° E; 29 Sep.–26 Oct. 2007; N. Ryrholm and C. Källander leg.; MV-light trap in deciduous woodland; STI-NJBC247; NHRS-HEVA000008733 GoogleMaps   1 ♀; Gotland, Sundre, Barrshage ; 56.922° N, 18.186° E; 10 Sep.–9 Oct. 2006; N. Ryrholm and C. Källander leg.; MVlight trap in wet meadows; NHRS-HEVA000008734 GoogleMaps   1 ♀; Öland, Borgholm, Hälludden Byxelkrok ; 57.356° N, 17.058° E; 22–24 2017; R. Isaksson leg.; MV-light; NHRS-HEVA000008735 GoogleMaps   1 ♀; Norrbotten, Övertorneå, Soukolojoki ; 66.472° N, 23.632° E; 2 Aug.–5 Oct. 2017; N. Ryrholm and C. Källander leg.; MV-light trap; NHRS-HEVA000008736 GoogleMaps   1 ♀, 2 ♂♂; Uppland, Norrtälje, Väddö Skjutfält ; 59.939° N, 18.914° E; 29 Jul.–18 Sep. 2017; N. Ryrholm and C. Källander leg.; MV-light trap in coastal military shooting range; NHRS-HEVA000008737 to NHRS-HEVA000008739 GoogleMaps   2 ♀♀; Skåne, Ystad, Spraggehusen ; 55.442° N, 14.246° E; 28 Aug.–30 Sep. 2006; N. Ryrholm and C. Källander leg.; MV-light trap in sanddunes; NHRS-HEVA000008740, NHRS-HEVA000008741 GoogleMaps   1 ♂; same data as for holotype; 1 Aug.–28 Jul. 2016; B. Andersson leg.; MV-light in garden on sandy ground close to deciduous, oak dominated forest, NHRS-HEVA000008742 GoogleMaps   1 ♀; Gotland, Öja, Petesviken ; 57.004° N, 18.295° E; 5 May–13 Oct. 2013; N. Ryrholm and C. Källander leg.; MV-light trap; NHRS- HEVA000008743 GoogleMaps   1 ♂; Öland, Mörbylånga, Nedra Västerstad ; 56.416° N, 16.411° E; 10 Jul. 2018; N. Johansson leg.; MV-light in garden surrounded by deciduous forest; NHRS-HEVA000008744 GoogleMaps   .

Description

Fore wing length 15–16 mm. Antenna with 46–53 flagellomeres. First flagellomere 4.5 times as long as wide. Second flagellomere very elongate about 3.5–4.0 times as long as wide. Central flagellomeres elongate, about 2.5–3.0 times as long as wide. Apical flagellomeres approximately 2.5 times as long as wide ( Fig. 8C View Fig ). Apical flagellomeres in female, less so in males, with long prominent pilosity. Length of pilosity in females at least 0.5 width of flagellomere ( Fig. 8C View Fig ). Head narrow behind eyes, in lateral view with temple 0.2–0.3 times as long as compound eye in females, slightly longer in males, 0.4–0.5 times the lenght of the compound eye. Ocelli in female large, partly covering the inner margin of compound eye in dorsal view, the distance between ocelli about 0.3 times the diameter of ocelli. Malar space about 0.1 times as long as mandibular base in female and about 0.3 times in male. Mandibular gape right-angled, with internal angles. Wing membrane clear. Ramellus usually distinct, reaching 0.2–0.3 the width of discosubmarginal cell but sometimes small or absent. Radius evenly curved ( Fig. 13A View Fig ). Mesopleuron weakly shagreened with deep, distinct punctures. Interstices between punctures about equal to their diameter. Epicnemial carina, in antero-ventral view, with pleurosternal angles obviously anterior to sternal angles. Pleurosternal angles rounded, slightly obtuse. Scutellum with lateral carinae only indicated basally. Propodeum with very weak rugose structure, shining with anterior and posterior transverse carina strongly raised ( Fig. 10L View Fig ). Longitudinal carinae delimiting area superomedia and lateral longitudinal carinae sometimes weak or absent, but normally clearly indicated at the junction with the posterior transverse carina. Hind trochantellus shorter than wide in dorsal view. Legs normal with hind femur about 6.0–7.0 times as long as wide. Sclerotised part of first sternite ending level or slightly posterior to spiracle. Inner spur of hind tibia as long as 0.4 times metatarsus.

Colour

Body testaceous. If infuscate or pale markings occur, they are usually far less distinct than in other species of the aggregate. Mandibular teeth black. Ovipositor brownish, slightly contrasting with the more testaceous posterior metasomal segments.

DNA barcode

The DNA barcode sequences of nine Swedish specimens of Ophion tenuicornis Johansson   sp. nov. are available at the BOLD systems database (www.boldsystems.org, BIN. BOLD: ACK3000. Specimen codes: STI-NJBC: 243–248, 250–252).

Ecology

The flight period is late summer and autumn. One female in NHRS was reared from Thyatira batis ( Linnaeus, 1758)   and one female was reared from the same host in HSC. This is notable since only the two species of the subgenus of Platophion   are known to parasitize the subfamily Thyatirinae   . Both reared specimens are rather small, which suggests the existence of additional hosts.

Distribution in Sweden

Occurs commonly all over the country, but rarer in the north.