Eridontomerus cyaneus, Janšta & Bouček, 2006

Janšta, Petr & Bouček, Zdeněk, 2006, A new species of Eridontomerus with taxonomic and faunistic notes on some other taxa (Hymenoptera: Chalcidoidea: Torymidae), Acta Entomologica Musei Nationalis Pragae 46, pp. 211-218 : 212-214

Eridontomerus cyaneus sp. nov.

( Figs. 1-5 )

Type locality. Spain, Castellon province, Benicasim.

Type material. HOLOTYPE: ♀, ‘ SPAIN: Castellon / Benicasim, 13-15. / vi.1973. Z.Bouček’ ( BMNH) . PARATYPES: 4 ♀♀ 1 J, same label data as holotype ( BMNH) ; 1 ♀, ‘ SPAIN: Castellon / Benicasim , 13-15. / vi.1973. A. Watsham’ ( BMNH) ; 1 ♀ 3 JJ ‘ SPAIN (Castellon): / Benicasim , 22-24. / vi.74 Z.Bouček’ ( BMNH, NMPC) ; 1 ♀ 1 J ‘ SPAIN: Toledo / 6.vii.1974 / Z.Bouček’ ( BMNH) ; 2 ♀♀ ‘ SPAIN: Madrid / El Pardo / 29.vi.1973 // Z.Bouček / BM1973-312’ ( BMNH) ; 3 ♀♀ 1 J ‘ SPAIN (Madrid): / El Pardo, 10.vii. / 1974 Z.Bouček’ ( BMNH), 2 ♀♀ 4 JJ ‘ SPAIN (Granada): / Cubillas, 4.vii. / 1974 Z. Bouček’ ( BMNH) ; 1 ♀ ‘ SPAIN: Burgos / Arranda de Duero / 1.vii.1973 Z. Bouček’ ( BMNH, NMPC) .

Description. Female. Length of body 2.3-2.9 mm (holotype 3.25 mm), length of ovipositor 0.5-0.6 mm (holotype 0.5 mm).

Colouration and diagnosis. Antennae pale brown, with basal part of scape testaceous; head and mesosoma clearly metallic blue with blue-violet tint; coxa, femur, hind tibia and partly fore and mid tibia dark coloured with bright violet reflection; tarsi yellow except dark last tarsal segments and claws; gaster and ovipositor dark, sometimes with slight blue-violet metallic tint in distal one quarter. Head and mesosoma coarsely reticulate, densely covered with silver setae. Gaster entirely visible reticulate from dorsal and lateral view. Ovipositor more than 0.33 times length of gaster. Tegula dark with slight metallic tint. Wings hyaline, venation pale yellow, only parastigma and apical part of submarginal vein slightly brownish.

Head transverse, about 1.2 times as wide as thorax, 2.2-2.3 (holotype 2.28) times as wide as long in dorsal view, 1.35-1.38 times as wide as high in frontal view (holotype 1.38); temples strongly converging, 0.12-0.15 times as long as length of head (holotype 0.13) ( Fig. 1 ). Vertex more coarsely and densely reticulate than face, scrobal depression distinctly reticulate. Anterior margin of clypeus straight. Malar space 0.42-0.48 times length of eye (holotype 0.42 times), mouth 1.5-1.8 times malar space (holotype 1.72 times). Ratio POL: OOL 2.3- 2.6, OOL: OD 1.25-1.5 (holotype POL: OOL 2.55, OOL: OD 1.29). Eyes densely setose. Antenna with scape not reaching anterior ocellus; flagellum strongly clavate, with one anellus; anellus and flagellar segments strongly transverse; first funicular segment as wide as pedicel, following flagellar segment always slightly wider than previous one, each of them covered with one row of longitudinal sensilla. Clava 1.6 times as long as wide ( Fig. 2 ). Head entirely covered with protruding silver setae which are more dense in genal area.

Mesosoma about 1.5 as long as wide, dorsally with conspicuously coarser reticulation and longer protruding setae than on vertex. Mesoscutum with well visible, deep notauli. Scutellum about as long as wide, in outline nearly circular; basal part widely joining posterior part of midlobe of mesoscutum. Propodeum finely reticulate, except for shiny smooth median part delimited by two complete carinae and one incomplete one between them. Propodeal spiracles small and oval. Lateral part of mesosoma, except for smooth epimeron and coxae, finely reticulate. Femora stout, hind femur serrate on posterior margin, bearing two or three small teeth ( Fig. 3 ). Forewing hyaline, 2.3-2.5 times as long as wide (holotype 2.4 times). Costal cell bare dorsally, with dense yellow-white setae ventraly; basal cell with one, at apex rarely with two rows of setae below submarginal vein; speculum reaching to the end of parastigma; disc of forewing in part below marginal vein seemingly bare, sparsely covered with long and pale setae, the rest of disc more densely, darkly and shortly setose; cubital setal line and basal setal line complete. Marginal vein 1.95-2.2 times as long as postmarginal vein (holotype 2.2 times) and 2.6-3 times as long as stigmal vein (holotype 2.9 times) ( Fig. 4 ).

Metasoma. Gaster only slightly shorter than head plus mesosoma, dorsally as wide as mesosoma, 1.7 times as long as wide, ovate; sculpture of gaster alutaceous but clearly visible on each tergum, distinctly coarser laterally than dorsally. Lateral panels of gastral terga densely setose, with only a few setae visible on Gt 2 to Gt 6 in dorsal view. Hind margin of Gt 1 indistinctly and Gt 2 more deeply emarginate medially but not incised, hind margin of other gastral terga straight ( Fig. 5 ). Ovipositor about 0.36-0.4 times (holotype 0.39 times) as long as gaster (OI 0.7-0.9, holotype 0.7).

Male. Length of body 1.9-2.4 mm.

The same as female except as follows: Antenna with scape and pedicel entirely dark with slightly metallic colour; tegula dark with slight metallic tint. Flagellum dark brown. Head about 1.13-1.2 times as wide as thorax, 2.0-2.18 times as wide as long in dorsal view; temples 0.15-0.2 times length of head. Ratio POL: OOL 2.7-2.9, OOL: OD 1.0-1.2. Clava 1.5-1.8 times as long as wide, micropilosity area extending along whole ventral part of clava. Mesosoma not so strongly reticulate dorsally, more shiny than in female. Scutellum 1.2-1.35 times as long as wide, more narrowly joining mesosoma. Propodeum finely reticulate, with only one carina medially. Hind femur finely serrate on posterior margin. Forewing 2.00-2.15 times as long as wide; all setae on forewing pale yellow; marginal vein 1.8-2.0 times as long as postmarginal vein, 2.5-3.0 times as long as stigmal vein. Sculpture of gaster finely alutaceous, more shiny than in females. Hind margin of Gt

1

and Gt

2

more or less incised medially.

Variability. The ranges in all measurements are given above; the variation in colour is as follows: scape from partly (in basal half) to entirely testaceous, with or without metallic tint, but always more darkened in the distal part of scape. Lateral parts of thorax and gaster dark testaceous in some specimens, without metallic reflection and blue colouration. Gaster reticulation finer and barely visible in the distal part of dorsal side of Gt 1 and Gt 2, emargination of Gt

1

and Gt

2

sometimes deeper than in holotype, especially more or less incised in males.

Differential diagnosis. The new species differs from the remaining species of Eridontomerus by the combination of the following characters: thorax clearly blue-violet at least in dorsal part, covered with silver setae; venation of wings predominantly pale yellow; disc of wing below the marginal vein with sparse setation; body generally robust.According to the original description by ZEROVA & SERJOGINA (1999), the new species seems to be similar to E. sapphyrinus Zerova & Serjogina, 1999 , but the latter species has the flagellum less clavate, with longer segments, hind margins of Gt 1 and Gt 2 are more deeply incised medially, and the body is bright blue-green in colour.

Etymology. Cyaneus (Greek adjective, latinized) = blue. The species name refers to the blue colour of the body of this species.

Bionomics. Unknown.

Distribution. Spain.

Figures

Figs. 1-6. 1-5 – Eridontomerus cyaneus sp. nov., female. 1 – head, dorsal view; 2 – antenna, lateral view; 3 – hind femur, anterior view; 4 – forewing, dorsal view; 5 – gaster, dorsal view. 6 – Torymus nemorum Bouček, 1994, male antenna, lateral view.