Ormyrus lini Chen, 1999

Koutsoukos, Evangelos, Compton, Stephen G., Noort, Simon van, Avtzis, Dimitrios N. & Askew, Richard R., 2024, A new species of Ormyrus Westwood (Hymenoptera, Ormyridae) developing in figs of Ficus microcarpa in Europe, European Journal of Taxonomy 917, pp. 170-193 : 181-185

Ormyrus lini Chen, 1999

Figs 7–8

Ormyrus lini Chen, 1999: 57–59 , figs 10–11.

Diagnosis (both sexes)

Body length 1.38–1.6 mm. Colour dark metallic greenish blue, with violet reflections in front of mesoscutum ( Fig. 7A–B ). Antennae placed nearly below the lower level of eyes ( Fig. 7C ). Mouth margin testaceous ( Fig. 7C ). Funicle with one anellus present ( Fig. 7C–D ). Vertex with several pairs of relatively long setae ( Fig. 7B–D ). In females, gaster acarinate, with oblique epipygium ( Fig. 7E–F ).

In females, sides of mesosoma testaceous sometimes. In males, sides of mesosoma with testaceous colouration ( Fig. 8E ).

Material examined

TAIWAN • 1 ♂; Taipei; 11 Apr.–4 Dec. 2012; S.G.A. Compton leg.; ex F. microcarpa , (collection of fig 11 Apr. 2012, emergence of individuals 4 Dec. 2012); Imaged WaspWeb LAS 4.9 SAMC 2023; SAM-HYM-P095394 ; SAMC • 1 ♀; 13 Jan. 2012; F. microcarpa , Ormyrus?lini ; Ormyrus lini det. R.R. Askew; Imaged WaspWeb LAS 4.9 SAMC 2023; SAM-HYM-P095393 ; SAMC. CHINA • 1 ♀, 1 ♂; Guangzhou ; 7 May 2012; S.G. Compton and Yu Hui leg.; ex fruits of F. microcarpa ; RRA.

Description

Female

COLOUR. Dark metallic greenish blue, front of mesoscutum with violet reflections; gaster with Gt2 only shortly exposed, anterior parts of Gt3, Gt4 and Gt5 with the transverse foveate bands violet, the anterior sternites partly, the hypopygium and ovipositor testaceous; scape and pedicel testaceous, flagellum brown; clypeus, mouth margin and mouthparts testaceous; legs with metacoxa metallic bluish green, front and middle coxae brown, all tibiae brown dorsally but shading to testaceous ventrally; tarsi testaceous with brown claws; wings hyaline, tegulae, axillary sclerites and venation testaceous.

BODY LENGTH. 1.6 mm.

HEAD. In dorsal view 2.05× as broad as long, eye length 0.7× head length with temple 0.15× head length; ocelli in obtuse triangle of about 140°, POL 3.9× OOL, OOL about 1.7× diameter of posterior ocellus; vertex transversely striate with four pairs of setae of differing length near posterior edge, the outermost pair (behind eyes) and a pair behind posterior ocelli the longest, each seta about 3× OD and inclined forwards, another pair of long setae near inner eye margins behind posterior ocelli. Head in front view 1.3× as broad as high, eye length 0.6× height of head; eyes with inner margins weakly divergent ventrally; upper face vertically striate with a row of about five short setae near inner margin of eye; toruli below eyes with upper margins at about level of lower eye margins; lower face with several short white setae in small punctures and with weak reticulate sculpture. Antenna with scape about 5.5× as long as wide, 0.8× height of eye, not quite reaching anterior ocellus; pedicel plus flagellum 0.7× width of head, pedicel about 1.7× as long as broad and three times as long as the two short and very transverse anelli together; flagellum fusiform, all six funicle segments transverse, each with a single transverse row of linear sensilla, Fu1 1.7× as broad as long, Fu2 about 1.9× as broad as long, Fu3–Fu6 each of about equal length and twice as broad as long, clava ovoid, about 2.5× as long as but scarcely broader than Fu6.

MESOSOMA. Mesosoma dorsally convex, in dorsal view 1.27× as long as wide, very shiny with transverse striae which are most narrowly spaced on pronotum; mesoscutum 1.8× as broad as long, notauli traceable throughout and quite deeply impressed at posterior ends, setation very sparse, the mid-lobe with only two pairs of relatively long setae in posterior half and the side-lobes with a few setae laterally; scutellum 1.25× as long as mesoscutum, concentrically striate with three long setae on each side, apical rim protruding over vertical metanotum and almost occluding propodeum in dorsal view. Propodeum sloping at an angle of about 120° to tangential plane of scutellum, callus thickly pilose. Metacoxa about twice as long as wide, its flat outer face reticulate; metafemur 2.8× as long as wide; metatibia with about eight white spines on posterior edge, longest tibial spur slightly longer than metabasitarsus. Fore wing with lengths costal cell: marginal vein: stigmal vein: postmarginal vein as 72:37:5:10, stigmal vein widening almost from its base; submarginal vein with about 10 dorsal setae, each 1.5–2.0× width of costal cell; basal cell bare, basal fold with two setae; speculum large, open below, extending behind about 0.75× length of marginal vein.

METASOMA. Gaster 1.6× as long as mesosoma, ovate in dorsal view and 1.7× as long as wide, in lateral view 1.4× as long as deep; median dorsal carina absent; ovipositor slightly exserted, epipygium and ovipositor directed obliquely upwards forming an angle of about 120° with dorsal plane of Gt5; Gt3 dorsally with maximally three exposed transverse rows of foveae, Gt4 with four and Gt5 with three, the narrow apical non-foveate parts of these tergites almost smooth and very shiny.

Host

Reared from figs of F. microcarpa ; however, its precise biology is unknown.

Distribution

China (mainland), Taiwan.

Remarks

This species was originally described from a single male reared from F. microcarpa collected in Taiwan ( Chen et al. 1999). The female is described here, also based on a specimen collected in Taiwan. Additionally, a male and female from Guangzhou, China have been examined.

All the material was reared from figs of F. microcarpa . No significant structural differences between individuals from the two localities were detected and the most noticeable difference concerned colouration, with specimens from mainland China being more extensively yellowish testaceous. The female from mainland China is yellowish testaceous on the face below the level of the toruli, sides of the mesosoma, legs including coxae, propodeum and entire ventral surface of gaster. There is less of a colouration difference between males, but the specimen from mainland China is testaceous on the entire face below the level of the upper margins of the toruli whereas the Taiwanese male has a triangular testaceous area with apex between the toruli and extending to the lateral corners of the mouth opening.

Figures

Fig. 7. Ormyrus lini Chen, 1999, non-type ♀, SAM-HYM-P095393 (SAMC). A. Habitus, lateral view. B. Head and mesosoma, dorsal view. C. Head, anterior view. D. Head and mesosoma lateral view. E. Metasoma, lateral view. F. Scutellum, propodeum and metasoma, dorsal view.

Fig. 8. Ormyrus lini Chen, 1999, non-type ♀, SAM-HYM-P095393 (SAMC). A. Fore wing, dorsal view. B. Labels. Ormyrus lini, non-type, ♂ SAM-HYM-P095394 (SAMC). C. Habitus, lateral view, (inset: labels). D. Head and mesosoma, dorsal view. E. Head, anterior view. F. Propodeum and metasoma, dorsal view.