Neopius citrinus Sheng & Chen, sp. n.

Figs 13 –22

Type material. Holotype, ♀ (ZJUH), “NE China: Liaoning, Shenyang, Dongling, 6.V.1994, Juxian Lou, No. 947507” . Paratypes: 1³ (ZJUH), “NE China: Heilongjiang, Jingpo Lake, 26.VIII.1995, Juxian Lou, No. 962322”; 1³ (ZJUH) “NE China: Jilin, Antu, 5–6. VIII.1994, Juxian Lou, No. 976939” .

Description. FEMALE. Holotype. Length. Body 2.6 mm, of fore wing 2.7 mm.

Head. Antennomeres 30, 1.3× fore wing (antenna 3.4 mm); third segment 1.3× as long as fourth segment, length of third, fourth and penultimate segments 2.8, 2.2 and 1.8× their width respectively (Fig. 21); length of maxillary palp 0.7× height of head; labial palp segments petiolate, rather moniliform (Fig. 12); occipital carina complete and present medio-posteriorly, distinctly developed dorsally and with crenulate laterally and dorsally, rather far from hypostomal carina (Fig. 19); hypostomal carina medium-sized; length of eye in dorsal view 1.5× temple; frons coriaceous and glabrous, with two deep depressions laterally and a small but rather shallow depression medially (Fig. 19); face largely granulated, medially weakly elevated (Fig. 18); malar suture shorter than basal mandible width; width of clypeus 2.6× its maximum height and 0.6× width of face; clypeus flattened, smooth except for some punctures and its ventral margin straight; hypoclypeal depression medium-sized; malar suture depressed deeply and distinct, without punctures between malar suture and mandible; mandible uniformly widened baso-ventrally (Fig. 18).

Mesosoma. Length of mesosoma 1.3× its height (Fig. 15); dorsal pronope absent and pronotum horizontal anteriorly; pronotal side coriaceous and coarsely crenulate anteriorly and posteriorly; epicnemial area coarsely crenulate; precoxal sulcus originated from anterior margin of mesopleuron, wide, distinctly impressed and densely and coarsely crenulate, absent posteriorly (Fig. 15); pleural sulcus coarsely crenulate; mesosternal sulcus narrow and finely crenulate; notauli elongated until half of mesoscutum, crenulate basally and gradually reduced posteriorly; mesoscutum coriaceous or superficially granulate; medio-posterior depression of mesoscutum round and rather shallow; lateral margin of mesoscutum crenulate; scutellar sulcus deep, parallel-sided and with 6 short crenulate; scutellum smooth, coriaceous and convex; metanotum crenulate posteriorly (Fig. 16); propodeum densely coarsely sculptured and with a short medio-longitudinal carina anteriorly (Fig. 17); metapleuron largely and densely sculptured, crenulate anteriorly and posteriorly (Fig. 16).

Wings. Fore wing: pterostigma narrow elliptical (Fig. 13); 1-R1 reaching wing apex and 0.9× as long as pterostigma; r:3-SR:SR1 = 7:29:66; 2-SR:3-SR:r-m = 22:29:8; length of r as long as pterostigma; 1-M slightly curved and SR1 nearly straight; m-cu slightly postfurcal; cu-a distinctly postfurcal and 1-CU1 widened; CU1b short and absent apically, first subdiscal cell open; CU1a quite short; apical quarter of M+CU1 sclerotized; first subdiscal cell of fore wing moderately long. Hind wing: M+CU:1-M:1r-m = 14:12:7; cu-a slightly straight; m-cu absent; 1-1A slightly curved (Fig. 14).

Legs. Length of femur, tibia and basitarsus of hind leg 4.4, 8.3 and 5.5× as long as wide, respectively; hind femur and tibia with dense setae; telotarsus enlarged, length of telotarsus 0.7× as basitarsus (Fig. 22).

Metasoma. Length of first tergite as long as its apical width, its surface evenly gradually convex medially, longitudinally rugose and punctate medially and with a medio-longitudinal carina posteriorly, dorsal carinae separated and almost up to posterior margin of tergite, between carinae with fine, longitudinal sculpture (Fig. 17); second suture obsolescent; second tergite as long as third tergite and sparsely granulate-punctate; third tergite and following tergites smooth; second and third tergites 0.4× as long as metasoma after first tergite (Fig. 12); length of setose part of ovipositor sheath 0.1× fore wing and 0.3× hind tibia (Fig. 22).

Colour. Black, dark brown or yellow; vertex and frons largely, mesosoma, first tergite black; antenna, mandible apically, T3–T6 anterior margin, telotarsi and tarsal claw, ovipositor sheath dark brown; temple, face, clypeus, mandible, second tergite and T3–T6 posterior margin; ovipositor; legs except telotarsi and tarsal claw yellow; wing membrane evenly slightly infuscate.

MALE. Antennomeres 27 (1) or 28(1), third antennomere 1.3–1.4× as long as fourth segment, length of third and fourth segments 3.7, 2.7 their width, respectively; length of eye in dorsal view 1.1 or 1.3× temple; malar suture quite shallow and not distinct or wide and deep; length of mesosoma 1.4× its height; r of fore wing shorter than or as long as pterostigma; m-cu nearly interstitial; length of tibia and basitarsus of hind leg 7.5 and 3.3× as long as wide respectively; legs except tarsal claw yellow; T3 posterior margin to T6 dark brown.

Distribution. China (Palaearctic: Liaoning, Jilin, Heilongjiang).

Biology. Unknown.

Etymology. Name is derived from Greek adjective “kitrinos” (means yellow), latinized as citrinus .

Comments. The new species differs from Neopius rudis (Wesmael, 1835) by having the face yellow (face largely dark brown); notauli nearly complete, basal half crenulate and gradually reduced posteriorly (notauli complete, extended to medio-posterior depression); vein m-cu of fore wing shorter than vein 2-CU1 (vein m-cu of fore wing about 1.5× vein 2-CU1); occiput rather straight in dorsal view (occiput concave in dorsal view)