Ophion perkinsi Brock 1982
Creators: name: Johansson, Niklas
name: Cederberg, Björn
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Ophion
Ophion perkinsi

description: Ophion perkinsi Brock, 1982
Figs 10H, 17C, E, 20F, 21D
Ophion perkinsi Brock, 1982: 87–88.
Material examined
Holotype, ♀, and paratype, ♀ (BMNH); 14 ♀♀, 1 ♂♂ (Sweden); 1 ♂ (Estonia); 4 ♀♀ (Norway).
Diagnosis
Fore wing length 12–13 mm. Antenna in both sexes with 45–49 flagellomeres. First flagellomere 3.0–3.5 times as long as wide. Central flagellomeres almost square to slightly longer than wide. Head buccate behind eyes (Fig. 21D), in dorsal view with distance between inner margin of compound eye and lateral ocellus 0.2–0.3 times the diameter of ocellus. Malar space in female about 0.3–0.4 times (Fig. 17E), and in male 0.8 times the length of mandibular basis (Fig. 17C). Head in anterior view rounded. Temple in lateral view about 0.7–0.8 times as long as compound eye. Mandibular gape rightangled, with internal angles. Wing membrane clear. Ramellus distinct. Radius sinuous. Mesopleuron and metapleuron distinctly punctate with obvious microsculpture between punctures. Interstices between punctures about equal to their diameter. Pleurosternal angles rounded, approximately right angled, well defined and obviously anterior to sternal angles. Scutellum with distinct lateral carinae at least in basal half. Propodeum coriaceous and usually distinctly punctate. Anterior and transverse carina present centrally, often weak or absent laterally. Posterior transverse carina strongly raised, interrupted centrally. Longitudinal carinae delimiting area superomedia often weak or absent (Fig. 10H) and area superomedia usually elongate. First tergite narrow and strongly elongate in lateral view, with a dorsal undulation (Fig. 20F). Sclerotised part of first sternite ending distinctly posterior to spiracle. Hind trochantellus shorter than wide in dorsal view. Inner spur of hind tibia as long as 0.5 times hind metatarsus.
Colour
Body testaceous. Inner and outer orbits slightly yellowish. Mandibular teeth black. Ovipositor sheath testaceous, concolourous with posterior metasomal segments.
DNA barcode
The DNA barcode sequences of two Swedish specimens of Ophion perkinsi are available at the BOLD systems database (www.boldsystems.org, BIN. BOLD: ADM6556. Specimen codes: STI-NJBC: 218, 222).
Ecology
No details are known about the ecology of this species. It seems to occur mainly in deciduous forests in Southern Sweden. The main flight period is July.
Distribution in Sweden
Rare but widespread in the southern part of Sweden.
Remarks
Very similar and closely related to Ophion norei Johansson sp. nov., but with the malar space considerably longer in both male and female and the head more rounded in anterior view. The first tergite is slenderer and with a dorsal undulation centrally in lateral view. Generally the mesopleural angles are less prominent and the meso- and metapleuron have distinct microsculpture between punctures.
description: Published as part of 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, pp. 1-136 in European Journal of Taxonomy 550 on pages 91-92, DOI: 10.5852/ejt.2019.550, http://zenodo.org/record/3476402