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

Bai, Yue, Chen, Bin & Li, Ting-Jing, 2024, A newly recorded genus Microdynerus Thomson, 1874 and a review of its related genus Leptochilus de Saussure, 1853 (Hymenoptera, Vespidae, Eumeninae) from China, Journal of Hymenoptera Research 97, pp. 57-83 : 57

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.

Figures

Figures 86 - 94. Microdynerus parvulus (Herrich-Schaeeffer, 1838) ♀ 86 habitus in dorsal view 87 head in frontal view 88 vertex 89 propodeum in posterior view 90 mesosoma in dorsal view 91 mesosoma in lateral view 92 metasoma in dorsal view 93 metasoma in lateral view 94 metasoma in ventral view.

Figures 1 - 9. Leptochilus (Lionotulus) angulus sp. nov., holotype (♀) 1 habitus in dorsal view 2, 3 head in frontal view 4 gena in lateral view 5 vertex and pronotum 6 mesosoma in lateral view 7 propodeum in posterior view 8, 9 metasoma in lateral view.