Ophion perkinsi Brock, 1982

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 : 91-92

publication ID	https://doi.org/ 10.5852/ejt.2019.550
publication LSID	lsid:zoobank.org:pub:F8707194-B55E-48CA-8FE0-4CD0D023C217
DOI	https://doi.org/10.5281/zenodo.3477013
persistent identifier	https://treatment.plazi.org/id/A270EE7E-FC26-FFB1-F357-ABC9303BF9BC
treatment provided by	Plazi
scientific name	Ophion perkinsi Brock, 1982
status

Treatment

Ophion perkinsi Brock, 1982 View in CoL

Figs 10H View Fig , 17C, E View Fig , 20F View Fig , 21D View Fig

Ophion perkinsi Brock, 1982: 87–88 View in CoL .

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 View Fig ), 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 View Fig ), and in male 0.8 times the length of mandibular basis ( Fig. 17C View Fig ). 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 View Fig ) and area superomedia usually elongate. First tergite narrow and strongly elongate in lateral view, with a dorsal undulation ( Fig. 20F View Fig ). 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.