Microdynerus (Pseudomicrodynerus) parvulus (Herrich-Schaeeffer, 1838)

Figs 86-94

Odynerus parvulus Herrich-Schäeffer, 1838: 19.

Odynerus helvetius de Saussure, 1855: pl. XIII fig. 6; 1856: 295; Berland 1928: 63, figs. 104-108.

Microdynerus bifidus Morawitz, 1885: 177; Kostylev 1929: 82.

Pseudomicrodynerus helvetius; Blüthgen, 1938 (1937): 276; 1938: 446; 1952: 353; 1961: 66, 93; van der Vecht and Fischer 1972: 37.

Microdynerus parvulus; Castro, 1997: 5; Gusenleitner 2008: 38.

Material examined.

2♀♀, China, Xinjiang, Changji Hui Autonomous Prefecture, Qinghe county, Qinghe town, Ale Township, Akelangke Village, 46.690°N, 90.369°E, 1256 m, 19.VII.2019, Qian Han (CNU) .

Diagnosis.

Body length 5.5-5.8 mm, forewing 5.4-5.5 mm (Fig. 86); interspaces between punctures leathery; black, with the following parts whitish yellow: whole clypeus in male, antenna ventrally in male, two anterior spots of pronotum dorsally (or not), outer margin of tegula, apical bands of both T1-T2 and S2, apical spot of S3 laterally (or not), part of tibiae; mandibular teeth ferruginous in male. Body with sparse and small punctures; in front view, head slightly subquadrate, two lateral margin almost parallel (Fig. 87), in dorsal view head thick, vertex prolonged (Fig. 88); mandible enlarged and angular, the outer edge curved (Fig. 87); clypeus punctate, interspaces between big punctures densely micropunctate, and sparser at apex, clypeus wider than long (1.3 × in female), apically with deep U-styled emargination wider than depth (1.5 × in female) (Fig. 87); interantennal carina at the same level as frons; in female A6-A12 thick and short, A13 in male wide and flat, backward reaching apical margin of A9; frons wide and swollen, with a medial longitudinal furrow from anterior-ocellus to base of interantennal carina; frons, vertex and gena with sparse and deep punctures, interspaces with extremely minute punctures (Fig. 88); occipital carina curved latero-ventrally (Fig. 91). Mesosoma with sparse and deep punctures, interspaces with extremely minute punctures (Fig. 90); sharp angle of pronotal carina at humeral angle, and pronotal carina posteriorly with a row of short longitudinal carinae; mesoscutum with two longitudinal furrows of punctures on posterior margin; anterior margin of scutellum with a row of dense punctures, and with a shallow longitudinal furrow in the middle; metanotum medially with transverse raised bulge (Fig. 90); propodeal furrow deep, propodeal carina in the furrow developed and complete (Fig. 89). Metasoma leathery, punctures smaller and shallower than those on head and mesosoma, punctures on T1 a little larger and deeper than the second metasomal segment, and those on metasomal segments 3-6 indistinct (Figs 7-9); in dorsal view, the first metasomal segment bell-shaped, the second one with narrow apical lamellae; S2 concave basally, and flat in lateral view (Fig. 94).

Distribution.

China (new record: Xinjiang), England, France, Spain, Italy, Switzerland, Germany, Austria, Belarus, Ukraine, Russia.