Synergus deqingensis, Pujade-Villar & Wang & Chen & He, 2014

Pujade-Villar, Juli, Wang, Yi-Ping, Chen, Xue-Xin & He, Jun-Hua, 2014, Taxonomic review of East Palearctic species of Synergus section I, with description of a new species from China (Hymenoptera: Cynipidae: Cynipinae), Zoological Systematics 39 (4), pp. 534-544 : 536-538

Synergus deqingensis sp. nov. ( Figs 1–7 )

Holotype ♀, China, Fatou, Deqing , Zhejiang, 27 May 1995, leg. Jun-Hua He, designated by Yi-Ping Wang, deposited in ZJU . Paratypes: 6♀, 3♂, same data as holotype, leg. Xue-Xin Chen & Jun-Hua He , 2♂ and 5♀ deposited in ZJU , 1♂ and 1♀ deposited in UB .

Diagnosis. This species differs from all other ‘ Synergus species of section I in the lack of frontal carinae. The species can be further separated from all other Eastern Palearctic species of the section using the above key.

Description. Length. Female 2.2 mm, male 1.8 mm.

Color. Female ( Fig. 7 ): head blackish brown or black, except mandible yellow basally and dark brown distally; antenna uniformly dark yellow; mesosoma black except tegula dark reddish; coxa of legs blackish brown, trochanters reddish brown, and femur dark yellow basally and pale yellow apically; metasoma dark red basally and blackish red apically; wing hyaline, with distinct yellowish veins. Male: head pale yellow except vertex and frons dark brown, legs yellow, metasoma dark red, mesoscutum blackish brown or black and mesopleuron brown.

Head ( Figs 1–2 ). Head strongly punctuate with interspaces coriaceous, 1.3 times as wide as high in front view, with dense setae, 2.3 times as wide as long medially in dorsal view, and as wide as mesoscutum. Gena strongly punctuate with interspaces coriaceous, slightly expanded behind eye, visible in front view, narrower than cross diameter of eye. Malar space finely coriaceous, with densely delicate striate radiating from clypeus, 0.7 times as long as height of eye. POL: LOL: OOL =7: 5: 4. Transfacial distance 1.3 times as long as the maximum height of eye; diameter of antennal torulus 1.3 times as long as distance between them, distance between torulus and eye margin as long as diameter of torulus. Inner margins of eyes parallel. Face finely coriaceous, with dense striate radiating from clypeus, reaching antennal toruli and eyes, median area narrow with two blunt longitudinal carinae. Clypeus with striae; anterior tentorial pits small but distinct; epistomal sulcus and clypeo-pleurostomal line indistinct, ventral margin of clypeus almost straight, not medially incised. Frons, vertex and occiput strongly punctuate with interspaces coriaceous, lateral frontal carinae and medial carina absent.

Antenna. Female ( Fig. 4 ). Antennae 14-segmented, slightly longer than head plus mesosoma; pedicel subquadrangular, 1.3 times as long as wide; F1 2.6 times as long as pedicel, and 1.4 times as long as F2, weakly curved medially and slightly expanded apically; relative lengths of antennal segments from scape to F12, 10: 5: 13: 9: 8: 8: 7: 6: 6: 6: 5: 5: 5: 9. Male ( Fig. 6 ). Antenna incomplete, with only 6 segments remaining; first flagellomere 3.0 times as long as pedicel, 1.5 times as long as second flagellomere; antennal formula 18: 10: 30: 19: 18: 18.

Mesosoma ( Figs 3, 7 ). Mesosoma weakly convex, 1.25 times as long as maximum height in lateral view, with dense setae. Pronotum finely coriaceous and setose; setae longer and denser laterally. Mesoscutum rugose and setose, slightly longer than wide in dorsal view, with interrupted transverse carinae. Notauli complete, well-impressed along entire length, weakly convergent posteriorly; median mesoscutal line long, extending to 1/2 - 3/5 of the entire length of mesoscutum; parapsidal lines distinctly impressed and extending to 3/4 of entire length of mesoscutum; antero-median parallel lines distinct and extending to 1/4 of entire length of mesoscutum. Transscutal articulation deep and narrow. Scutellum trapezoid, rounded and slightly broadened posteriorly, finely rugose, with dense long setae postero-laterally. Scutellar foveae deeply impressed and shinning smooth. Mesopleuron including specullum with distinct longitudinal striation, shinning; acetabular carina delimiting a very narrow setose area laterally; mesopleural triangle densely setose. Metapleural sulcus reaching mesopleuron at 4/5 of its height in lateral view. Subaxillular bar as high as metanotal trough. Lateral propodeal carinae distinct, parallel and slightly divergent anteriorly. Median propodeal areas rugose and densely setose. Nucha short and sulcate laterally. Hind tarsal claw with small basal lobe and tooth.

Wing ( Fig. 5 ). Fore wing longer than body, margin with short cilia; radial cell of fore wing 2.3 times as long as maximum width, veins Rs and R 1 reaching wing margin and radial cell closed; areolet distinct and large; vein Rs+M indistinct but visible, reaching basalis at about the middle.

Metasoma ( Fig. 7 ). Metasoma slightly longer than head plus mesosoma, 1.5 times as long as height in lateral view; fused tergite 2+3 with sparse pale setae antero-laterally, posterior patch of micropunctures covering 1/3 of its entire length, slightly short of reaching the ventral margin of syntergite; posterior margin of syntergite hardly incised dorsal-medially; prominent part of ventral spine of hypopygium short.

Distribution. China (Zhejiang).

Biology. Unknown.

Etymology. The new species is named after the type locality, Deqing in Zhejiang Province.

Figures

Figs 1–7. Synergus deqingensis sp. nov. 1. Head, frontal view. 2. Head, dorsal view. 3. Mesosoma, dorsal view. 4. Antenna of female and detail of F1. 5. Forewings. 6. Part of antenna of male and detail of first flagellomere. 7. Lateral body.