Euplectrus carinifer, Hansson & Schmidt, 2018

Hansson, Christer & Schmidt, Stefan, 2018, Revision of the European species of Euplectrus Westwood (Hymenoptera, Eulophidae), with a key to European species of Euplectrini, Journal of Hymenoptera Research 67, pp. 1-35 : 10-12

Euplectrus carinifer sp. n.

Figures 16 , 20-22 , 53

Material.

Holotype female labelled " CZECH REPUBLIC: Mikulcice , 48.808N, 17.094E, 169m, 21-May-2013, M. Volf, Sample BC- ZSM-HYM-27734-H05, CO1-5p 591 (0)bp BOLD: ACU2970", from Amphipyra pyramidea on Carpinus betulus , in ZSM . Paratypes (2♀ 6♂): 1♂ with same label data as holotype (ZSM); following from same locality as holotype but collected 22-May-2013, from Orthosia cruda on C. betulus (2♂, MZLU, NHM), Perigrapha munda on C. betulus (2♀, MZLU, NHM), 24-May-2013 from P. munda on C. betulus (2♂, ZSM) ; 1♂ " CZECH REPUBLIC: obora Soutok , Lanzhot, 48,69N, 16,945E, 165m, 16-May-2013, P. Drozd ", from Carcina quercana on Acer campestre (ZSM) ; 3♀ " NETHERLANDS ZH Delft 30-VIII-2009 e.l., leg S. Wegh, ex Autographa gamma " (ZSM) .

Diagnosis.

Frons below level of toruli with pale area not extending laterally to the eye but with a wide dark stripe between pale area and eye, in both sexes (Figs 20 , 21 ); midlobe of mesoscutum with a complete median carina (Fig. 53 ); with a narrow groove between scutellum and dorsellum (Fig. 53 ); female gaster with wide brown margins (Fig. 22 ).

Description

(holotype female). Length of body 2.0 mm, female paratypes 2.1-2.2 mm. Antennal scape yellowish-white with apical ½ yellowish-brown, pedicel and flagellomeres yellowish-brown. Mandibles and palpi yellowish-white. Head black with yellowish-brown clypeal area, pale area does not extend to eyes (Fig. 20 ). Frons smooth except a reticulate band closer to anterior ocellus than to toruli reaching from eye to eye, close to eyes with two rows of setae (Fig. 20 ). Vertex smooth and shiny. Occipital margin with a carina behind ocellar triangle.

Mesosoma black and shiny; midlobe with raised and strong reticulation, meshes ± isodiametric, midlobe of mesoscutum with a complete median carina (Fig. 53 ). Scutellum 1.0 × as long as wide; with engraved reticulation, meshes small and isodiametric in median part and larger and elongate in lateral part, except smooth and shiny posterior margin (Fig. 53 ). Dorsellum with a narrow groove along anterior margin (Fig. 53 ), groove medially 0.3 × as long as length of dorsellum. Propodeum smooth and shiny (Fig. 53 ); anteromedially with a triangular cup that is strongly raised in posterior part; propodeal callus with 12 setae. Legs pale yellowish-brown. Forewing: costal cell with two rows of setae on ventral surface, and margin with four setae close to marginal vein; with 14 admarginal setae.

Gaster dark brown, anterior ½ with a wide white stripe medially, stripe 2 × as wide as width of petiole and expanding in posterior part, and with apex pale (Fig. 22 ).

Ratios. HE/MS/WM = 2.1/1.0/1.0; POL/OOL/POO = 6.3/2.9/1.0; OOL/DO = 1.4; WE/WF/WH/HH = 1.0/2.4/4.2/3.2; WH/WT = 1.0; PM/ST = 1.3; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 3.5/2.2/7.2/2.0/1.6/1.0/2.0; LP/WP = 1.0; MM/LG = 1.2.

Male. Length of body 1.8-2.0 mm. Scape slightly enlarged, widest medially, with sensory pores along entire ventral margin. Similar to female except gaster with anterior ½ white with dark brown lateral margins, posterior ½ dark brown (Fig. 16 ).

Ratios. LC/WS = 2.8-3.0, LP/WP = 1.0.

Hosts.

Noctuidae : Amphipyra pyramidea (L.) on Carpinus betulus , Autographa gamma (L.), Orthosia cruda (Denis & Schiffermüller) on C. betulus , Perigrapha munda (Denis & Schiffermüller) on C. betulus . Depressariidae : Carcina quercana (Fabricius) on Acer campestre .

Distribution.

Czech Republic, the Netherlands.

Etymology.

Named after complete median carina on midlobe of mesoscutum. From the Latin carina (=keel) and the suffix - fer (=carry).

Genetic data.

The species consists of several subclusters, each assigned a different BIN by the BOLD system (Fig. 63 ) and a maximum intraspecific variation of 8.7%. Three of the subclusters occur in the Czech Republic, whereas the fourth was recorded from the Netherlands (Suppl. material S1). The high levels of intraspecific variation suggest the presence of more than one species, but in absence of reliable morphological characters for separating the MOTUs the populations are treated as a single species until more material from other regions and additional genetic data will allow a more thorough examination of the species status of each of the populations.

Figures

Figure 63. Neighbour-joining tree of Euplectrus, with colours indicating different Barcode Index Numbers (BINs). For a fully resolved tree with additional terminal taxa information, including sequence length and country of origin, see Suppl. material S 2.

Figures 7 - 16. Euplectrus spp.: 7 - 12 E. bicolor (Swederus) 7 - 9 neotype, female 7 habitus lateral 8 habitus dorsal 9 head frontal 10 non-type female, head front-lateral 11 head frontal, male 12 head front-lateral, male 13 E. flavipes (Fonscolombe), gaster dorsal, male 14 - 15 head including scape lateral, male 14 E. maculiventris Westwood 15 E. geometricida sp. n. 16 E. carinifer sp. n., gaster dorsal, male.

Figures 17 - 26. Euplectrus spp.: 17 - 19 E. geometricida sp. n., paratypes 17 head frontal, female 18 head frontal, male 19 gaster dorsal, female 20 - 22 E. carinifer sp. n., paratypes 20 head frontal, female 21 head frontal, male 22 gaster dorsal, female 23 - 26 E. pallidigaster sp. n., paratypes 23 head frontal, female 24 head frontal, male 25 gaster dorsal, female 26 gaster dorsal, female.

Figures 52 - 56. Euplectrus spp. 52 - 54 mesosoma dorsal, female 52 E. geometricida sp. n. 53 E. carinifer sp. n. 54 E. pallidigaster sp. n. 55 - 56 mesoscutum, female, a = width of base of midlobe, b = width of base of sidelobe 55 E. bicolor (Swederus) 56 E. intactus (Walker).