Pseudocyanopterus pagiophloeusis Samartsev & Li, 2021

Samartsev, Konstantin, Hao, De-Jun & Li, Tao, 2021, A new species of the genus Pseudocyanopterus van Achterberg, Cao & Yang (Hymenoptera, Braconidae, Braconinae) from China, Journal of Hymenoptera Research 86, pp. 79-92 : 79

Pseudocyanopterus pagiophloeusis Samartsev & Li sp. nov.

Figs 3 , 4

Type material.

Holotype. China • ♀; Shanghai, Songjiang District, Maogang; 12 Jun. 2018; Cong Chen & Shou-Yin Li leg.; pupated 18 Jun. and reared 26 Jun. 2018 from Pagiophloeus tsushimanus Morimoto; GSFGPM.

Paratypes. China • 4 ♀♀; same data as for holotype (but reared from different host larvae); GSFGPM • 1 ♂; same data as for preceding; GSFGPM • 2 ♀♀; same data as for preceding; 24 Jun. 2021; De-Jun Hao & Tao Li leg.; pupated 28 Jun. and reared 10 Jul. 2021; GSFGPM • 3 ♂♂; same data as for preceding; GSFGPM.

Etymology.

The name of the new species is derived from the host’s genus name.

Description.

Female. Body length 5.8-6.2 mm; fore wing length 4.5-5.1 mm.

Head. Width of head (dorsal view) 1.5-1.7 × its median length. Transverse diameter of eye (dorsal view) 1.6-1.9 × as long as temple. Eyes with sparse short setae. OOL 2.4 × OD; POL 0.85-0.98 × OD; OOL 2.45-2.85 × POL. Frons with deep mid-longitudinal groove. Longitudinal diameter of eye (lateral view) 1.2-1.3 × its transverse diameter. Transverse diameter of eye (lateral view) 1.8-2.0 × minimum width of temple, hind margins of eye and temple parallel or slightly broadened upwards. Face width 1.6 × combined height of face and clypeus; 1.90-1.95 × width of hypoclypeal depression. Longitudinal diameter of eye 2.7-2.9 × as long as malar space (anterior view); malar space length 0.70-0.95 × base of mandible. Malar space shallowly impressed. Width of hypoclypeal depression 1.50-1.55 × distance from depression to eye. Clypeus separated from face by dorsal carina; clypeal sulcus impressed; clypeus flattened, with protruding ventral rim, height of clypeus 0.25-0.30 × width of hypoclypeal depression. Maxillary palp as long as eye.

Antenna with 32-38 antennomeres (incomplete in holotype, with 35 antennomeres left). Scape (lateral view) with somewhat protruding ventral margin, but its dorsal side as long as its ventral side. First flagellomere 2.2-2.4 × as long as its apical width, 1.25-1.40 × as long as second flagellomere. Middle flagellomeres 1.45-1.70 × as long as wide. Penultimate flagellomere 1.7-1.9 × as long as wide and 0.8-1.0 × as long as apical flagellomere.

Mesosoma 1.75-1.85 × as long as its maximum height. Transverse pronotal sulcus deep and crenulate anteriorly and smooth and shallow posteriorly. Notauli weakly impressed, united posteriorly. Mesoscutum widely glabrous, setose only on notaulic area and medioposteriorly. Scutellar sulcus crenulate, 0.12-0.13 × as long as scutellum. Mesepimeral and metapleural sulci smooth. Mesopleural pit deep and wide, separated from mesepimeral sulcus.

Wings. Pterostigma 2.6-2.9 × as long as wide. Vein 1-R1 1.30-1.55 × as long as pterostigma. Marginal cell 5.5-5.6 × as long as distance from its apex to apex of wing. Vein 3-SR 2.3-2.6 ×, 0.35-0.40 ×, and 1.30-1.35 × as long as veins r, SR1 and 2-SR, respectively. Vein 1-M 0.65-0.70 × and 1.55-1.70 × as long as veins 1-SR+M and m-cu, respectively. Vein 1-SR+M weakly curved anteriorly in proximal part. Vein cu-a weakly postfurcal. Hind wing membrane proximally with more or less sparsed setosity (Fig. 4A, C ); vein 1-1A 1.4-1.7 × as long as cu-a; vein 2-1A absent.

Legs. Fore tibia widely with sparse long thick setae. Hind femur 3.35-3.45 × as long as wide, with subapical transverse row of thick setae. Hind tibia 1.50-1.55 × as long as hind femur, its inner spur 0.33-0.37 × as long as hind basitarsus. Hind tarsus 0.95-1.00 × as long as hind tibia. Fifth segment of hind tarsus 0.35-0.40 × and 0.7-0.8 × as long as hind basitarsus and second segment, respectively. Basal lobes of claws large, rectangular, but not protruding.

Metasoma with five coarsely sclerotised tergites, about 1.6 × as long as mesosoma. Median length of first tergite 0.70-0.85 × as large as its apical width. Dorsolateral carinae of first metasomal tergite developed. Median area of first tergite separated by crenulate furrow. Second tergite medially 1.05-1.10 × as long as third tergite, its basal width 1.75-1.80 × its median length. Second metasomal tergite with short (only delineating anterolateral areas) sublateral posteriorly converging furrows and with anterolateral, posteriorly diverging, crenulate grooves; anterolateral areas elongate-triangle, smooth, with sharp crenulate margins; median area strongly elevated, wide, triangular, with crenulate margin. Suture between second and third tergites deep and wide, weakly curved and crenulate. Third metasomal tergite anterolaterally with wide areas separated by crenulate suture. Apical margins of third to fifth tergites thick, with foveate transverse subapical grooves. Ovipositor sheath 2.55-2.60 × as long as hind tibia and 0.85-0.90 × as long as fore wing. Apex of ovipositor with developed dorsal nodus and ventral serration.

Sculpture. Head and mesosoma mainly smooth. Face medially smooth, laterally punctate. Malar space granulate. Propleuron smooth. Mesopleuron medially weakly granulate. Propodeum smooth with short rugae apicomedially. First metasomal tergite laterally weakly rugulose, its median area rugose posteriorly. Second metasomal tergite areolate-rugose, third-fifth tergites foveolate-rugose.

Colour. Head, pronotum, propleuron, fore coxa and mesoscutum along notauli (or its median lobe entirely) reddish yellow. First metasomal tergite, anterolateral parts of second tergite, sixth and seventh tergites and sternites pale yellow. The rest of body brownish black. Wing membrane weakly darkened, pterostigma and wing veins brown; tegulae dark brown.

Male. Body length 4.8 mm; fore wing length 3.7 mm. Face width 1.7 × combined height of face and clypeus. Longitudinal diameter of eye 3.1 × as long as malar space (anterior view); malar space length 0.7 × base of mandible. Antenna with 28-32 antennomeres. First, middle and penultimate flagellomeres 2.5 ×, 2.2 ×, and 2.1 × as long as wide, respectively. Median length of first metasomal tergite 1.3 × its apical width; second tergite medially 1.1 × as long as third tergite, its basal width 1.5 × its median length. First metasomal tergite and anterolateral parts of second tergite and pale yellow; the rest of metasoma brownish black. Otherwise similar to female.

Distribution.

China (Shanghai).

Biology.

Gregarious ectoparasitoid. Host: Pagiophloeus tsushimanus Morimoto, 1982 ( Coleoptera : Curculionidae : Molytinae ). Host plant: Cinnamomum camphora (L.) J. Presl ( Lauraceae ).

Diagnosis.

The differences between two known species of Pseudocyanopterus are presented in the dichotomy below.

1	Median length of first metasomal tergite 0.70-0.85 × its apical width (Fig. 4I ). Ovipositor sheath 0.85-0.90 × as long as fore wing. First flagellomere 2.2-2.4 × as long as apically wide (Fig. 4B ). Median area of first metasomal tergite apically rugose (Fig. 4I ). Second metasomal tergite with weakly proximally curved dorsolateral impressions, areolate-rugose (Fig. 4H ); third-fifth tergites areolate-rugose to foveolate-rugose, their apical margins with deep, complete and foveate transverse subapical grooves	Pseudocyanopterus pagiophloeusis Samartsev & Li, sp. nov.
-	Median length of first metasomal tergite 1.3-1.4 × its apical width (Fig. 2C ). Ovipositor sheath 1.3-1.4 × as long as fore wing (Fig. 2A ). First flagellomere about 2.7 × as long as apically wide. Median area of first metasomal tergite apically weakly foveate (Fig. 2C ). Second metasomal tergite with S-shaped dorsolateral impressions, longitudinally rugose anteriorly, smooth posteriorly; third-fifth tergites almost smooth, their apical margins with incomplete, weak and weakly crenulate transverse subapical grooves	Pseudocyanopterus raddeivorus Cao, van Achterberg & Yang

Figures

Figure 2. Pseudocyanopterus raddeivorus Cao, van Achterberg & Yang, 2020 (A-C holotype, female), Bracomorpha praecinctus (Shestakov, 1936) (D-F female), and Parallobracon oriens (Belokobylskij, 2000) (G, H paratype, female) A, G habitus, dorsal view D habitus, lateral view B, E, H fore wing C metasoma, dorsal view F scape, lateral view. Scale bars: 1 mm (A, B, D, E, G, H), 0.5 mm (C), 0.25 mm (F).

Figure 3. Pseudocyanopterus pagiophloeusis sp. nov. (female, A, C, E-G holotype B, D paratype) A habitus, lateral view B head, anterior view C head, dorsal view D mesoscutum and scutellum, dorsal view E head, lateral view F mesosoma, lateral view G propodeum, dorsal view. Scale bars: 1 mm (A), 0.5 mm (B-G).

Figure 4. Pseudocyanopterus pagiophloeusis sp. nov. (female, A, B, E, F, I holotype C, D, G, H paratype) A wings B base of antenna, lateral view C base of hind wing D fore femur and tibia E hind leg F hind leg claw G apex of ovipositor H metasoma, dorsal view I first metasomal tergite, dorsal view. Scale bars: 1 mm (A, E), 0.5 mm (C, H, I), 0.25 mm (B, D, F, G).