Epirhyssa quagga, Hopkins, Tapani, Roininen, Heikki, Noort, Simon van, Broad, Gavin R., Kaunisto, Kari & Saeaeksjaervi, Ilari E., 2019

Hopkins, Tapani, Roininen, Heikki, Noort, Simon van, Broad, Gavin R., Kaunisto, Kari & Saeaeksjaervi, Ilari E., 2019, Extensive sampling and thorough taxonomic assessment of Afrotropical Rhyssinae (Hymenoptera, Ichneumonidae) reveals two new species and demonstrates the limitations of previous sampling efforts, ZooKeys 878, pp. 33-71 : 33

Epirhyssa quagga sp. nov. Figs 39-45

Material examined.

Type material: UGANDA:

• 1 ♀, holotype; Kibale National Park, Kanyawara, Site CC, Malaise trap CCT1; 0.5497N, 30.3673E (WGS84); alt. 1450 m (GPS, WGS84); 11 Aug. 2015-25 Aug. 2015; Tapani Hopkins leg.; ZMUThttp://mus.utu.fi/ZMUT.5788

• 1 ♀, paratype; same data as preceding; Site R03, Malaise trap R03T2; 0.5403N, 30.3608E (WGS84); alt. 1490 m (GPS, WGS84); 21 May 2015-4 Jun. 2015; ZMUThttp://mus.utu.fi/ZMUT.1500

• 1 ♀, paratype; same data as preceding; Site K31, Malaise trap K31T3; 0.5360N, 30.3469E (WGS84); alt. 1450 m (GPS, WGS84); 23 May 2015-4 Jun. 2015; ZMUThttp://mus.utu.fi/ZMUT.4238

• 1 ♀, paratype; same data as preceding; Site K30S, Malaise trap K30ST4; 0.5414N, 30.3755E (WGS84); alt. 1420 m (GPS, WGS84); 2 Dec. 2014-15 Dec. 2014; ZMUThttp://mus.utu.fi/ZMUT.5743

• 1 ♀, paratype; same data as preceding; Site R01, Malaise trap R01T2; 0.5501N, 30.3561E (WGS84); alt. 1600 m (GPS, WGS84); 27 Mar. 2015-10 Apr. 2015; ZMUThttp://mus.utu.fi/ZMUT.5801

• 1 ♂, paratype; Kibale National Park, Kanyawara, Site CC, Malaise trap CCT1; 0.5497N, 30.3673E (WGS84); alt. 1450 m (GPS, WGS84); 2 Jun. 2015-17 Jun. 2015; Tapani Hopkins leg.; ZMUThttp://mus.utu.fi/ZMUT.3074

• 1 ♂, paratype; same data as preceding; Site K30S, Malaise trap K30ST2; 0.5392N, 30.3771E (WGS84); alt. 1480 m (GPS, WGS84); 5 May 2015-19 May 2015; ZMUThttp://mus.utu.fi/ZMUT.4000

• 1 ♂, paratype; same data as preceding; Site K15, Malaise trap K15T4; 0.5845N, 30.3674E (WGS84); alt. 1510 m (GPS, WGS84); 4 May 2015-20 May 2015; ZMUThttp://mus.utu.fi/ZMUT.5836.

Non-type material (only diagnostic characters checked): UGANDA

• 18 ♀; Kibale National Park, Kanyawara; Tapani Hopkins leg.; ZMUThttp://mus.utu.fi/ZMUT.1259, http://mus.utu.fi/ZMUT.2057, http://mus.utu.fi/ZMUT.2203, http://mus.utu.fi/ZMUT.2358, http://mus.utu.fi/ZMUT.2627, http://mus.utu.fi/ZMUT.3199, http://mus.utu.fi/ZMUT.3649, http://mus.utu.fi/ZMUT.4866, http://mus.utu.fi/ZMUT.5596, http://mus.utu.fi/ZMUT.5647, http://mus.utu.fi/ZMUT.5679, http://mus.utu.fi/ZMUT.5712, http://mus.utu.fi/ZMUT.5717, http://mus.utu.fi/ZMUT.5736, http://mus.utu.fi/ZMUT.5803, http://mus.utu.fi/ZMUT.5804, http://mus.utu.fi/ZMUT.5805, http://mus.utu.fi/ZMUT.5835

• 20 ♂; Kibale National Park, Kanyawara; Tapani Hopkins leg.; ZMUThttp://mus.utu.fi/ZMUT.1350, http://mus.utu.fi/ZMUT.1355, http://mus.utu.fi/ZMUT.1401, http://mus.utu.fi/ZMUT.1765, http://mus.utu.fi/ZMUT.2645, http://mus.utu.fi/ZMUT.2657, http://mus.utu.fi/ZMUT.2803, http://mus.utu.fi/ZMUT.3076, http://mus.utu.fi/ZMUT.3081, http://mus.utu.fi/ZMUT.3087, http://mus.utu.fi/ZMUT.3097, http://mus.utu.fi/ZMUT.3761, http://mus.utu.fi/ZMUT.3876, http://mus.utu.fi/ZMUT.4990, http://mus.utu.fi/ZMUT.5143, http://mus.utu.fi/ZMUT.5609, http://mus.utu.fi/ZMUT.5768, http://mus.utu.fi/ZMUT.5787, http://mus.utu.fi/ZMUT.5831, http://mus.utu.fi/ZMUT.6033.

Known material: 46 specimens (23 ♀, 23 ♂, Ugandan specimens, data above).

Diagnosis.

This species can be distinguished from other Afrotropical Rhyssinae by the distinctive pattern of striation on the frons and the densely striate tergite 3. No other species has the same colour pattern.

Head: frons without median carinae, without lateral carinae; hypostomal carina raised into a low flange, its height slightly less than or equivalent to the maximum width of the second maxillary palp segment.

Mesosoma: subalar prominence without a lateral flange; mesopleuron without a flange along the dorsal margin; epicnemial carina reaches the approximate height of the mesopleural pit.

Metasoma: tip of apical horn elliptical in posterior view; tergite 3 densely striate.

Description (female).

Body length 8.5 mm– 14.3 mm (holotype 12.3 mm).

Head: Frons without clear median carinae, without lateral carinae, with faint median rugae that fan out towards ocelli. Occipital carina interrupted dorsally. Hypostomal carina raised into a low flange, its height slightly less than or equivalent to maximum width of second maxillary palp segment. Face densely and deeply punctate. Clypeus with little or no punctation, with a median apical tubercle. Antenna with 30-33 flagellar segments (32 in holotype).

Mesosoma: Subalar prominence without a lateral flange. Mesopleuron without a flange along dorsal margin. Epicnemial carina reaches approximate height of mesopleural pit. Fore wing with 2m-cu varying from clearly distal to opposite rs-m.

Metasoma: Tip of apical horn elliptical in posterior view. Tergites 1-5 with dense, light, predominantly longitudinal striation and punctation, 6-7 smoother and more pubescent, tergite 1 1.9-2.4 times as long as apically wide (1.9 in holotype).

Colour: General colour mottled black and white with metasoma orange testaceous from tergite 3 onwards. Hind tibia dark brown. Antennae black. Ovipositor sheaths black to dark testaceous. Wings hyaline.

Variation: Colour of the dark patches of the legs varies from entirely black to testaceous, the black and white metasomal colour extends onto tergite 3 in some individuals.

Male.

Similar to female. Body length 7.9 mm– 10.4 mm. T1 3.2-3.6. Antenna with 29-33 flagellar segments. Males are smaller than females on average.

Etymology.

Refers to the colour pattern which is reminiscent of the plains zebra, especially its extinct subspecies, the quagga .

Distribution.

Uganda.

Biology.

In Uganda, this species was most abundantly caught during the dry season ( Hopkins et al. 2019b). It has not been caught outside the forest. It appears to be attracted to decaying wood (although the sample size is too small for statistical significance).

Figures

Figures 39 - 45. Epirhyssa quagga female (holotype http: // mus. utu. fi / ZMUT. 5788), a new species from Uganda. 39 Habitus 40 face and clypeus 41 frons 42 hypostomal flange 43 mesopleuron dorsal margin 44 apical horn of metasoma 45 tergites 1 - 7. Scale bars: 0.5 mm (40 - 45), 1 mm (39).