Nitela tumidiscuta, Li & Li & Ma, 2025

Li, Chengfang, Li, Qiang & Ma, Li, 2025, Six new species of the genus Nitela Latreille (Hymenoptera, Crabronidae) from China, with a key to the Oriental species, Journal of Hymenoptera Research 98, pp. 871-896 : 871-896

publication ID

https://doi.org/10.3897/jhr.98.172249

publication LSID

lsid:zoobank.org:pub:EF1A2444-5655-4AF0-9D0E-CFA25CE5B45E

DOI

https://doi.org/10.5281/zenodo.17407644

persistent identifier

https://treatment.plazi.org/id/8DE9EBB7-1E62-5B3C-BFE6-B237F9FA903F

treatment provided by

Journal of Hymenoptera Research by Pensoft

scientific name

Nitela tumidiscuta
status

sp. nov.

Nitela tumidiscuta sp. nov.

Fig. 5 View Figure 5

Type material.

Holotype. ♀, China • Yunnan, Jinghong, Menghai Country, Bulang Mountain , 21.6267°N, 100.4064°E, 2018.VI.21–VII.20, Ling Zhao collector GoogleMaps .

Paratypes. • 1 ♀, same data as holotype GoogleMaps ; 1 ♀, same location as holotype, 2019.V.28–VI.28, Ling Zhao collector GoogleMaps ; • 1 ♀, Yunnan, Jinghong, Menghai Country, Guanggang Village , 21.8192°N, 100.4967°E, 2021.II.14–III.14, Ling Zhao collector GoogleMaps .

Diagnosis.

This species is similar to N. feltoni Gayubo & Schmid-Egger, 2014 in having anterior carina of pronotal collar inconspicuous; episcrobal area coriaceous and impunctate; lower mesopleuron sparsely punctate. It differs by the following characteristics (characters of N. feltoni in parentheses): ventral half of mesopleuron without ridges (ventral half of mesopleuron with inconspicuous ridges); frons coriaceous, impunctate between lower part and midocellus (frons moderately shiny, sparsely, finely punctate and very finely ridged between lower part and midocellus); mesoscutum impunctate, mesosternum densely punctate (mesoscutum densely, finely punctate, mesosternum sparsely punctate and polished); clypeal anterior margin evenly arched (medial part of clypeal margin advanced, laterally with corners).

Description of female.

Body length 3.6–3.9 mm. Body black. Mandible basally blackish-brown, apex dark brown; maxillary palpus and labial palpus mostly yellowish-brown; stigma and tegula blackish-brown; wing veins yellowish-brown. Tarsi dark brown. Body covered with silvery pubescence.

Head. Inner margin of mandible subapically with one tooth. Clypeus conspicuously convex medially, with midclypeal carina extending to frontal prominence; anterior margin of clypeus with triangular smooth area, slightly concave medially (Fig. 5 B View Figure 5 ). Frons coriaceous, swollen medially, depressed laterally; upper part of convex portion with irregular sinuous rugae; frontal concavity shallow (Fig. 5 B View Figure 5 ). Ocellar triangle densely coriaceous (Fig. 5 C View Figure 5 ). Gena surface coriaceous. Vertex finely coriaceous (Fig. 5 C View Figure 5 ). Eyes converging above; OOD: POD: ODD = 2: 5: 5 (Fig. 5 C View Figure 5 ). Flagellomere 1 approximately as long as to pedicel.

Mesosoma. Pronotal collar stepped, with narrow transverse, but groove without internal ridges; anterolateral angle acute; anterior carina inconspicuous (Fig. 5 D View Figure 5 ). Mesoscutum conspicuously convex, with dense, fine, irregular transverse striae; basal median area without short, longitudinal ridges, posterior third with coarse, irregular wrinkles connected to median ridges, between wrinkles dull; scutal lateral sulcus crenulate, inner margin sharply defined, internal transverse ridges not extending beyond border (Fig. 5 D View Figure 5 ). Mesoscutellum coriaceous; anterior margin crenulate (Fig. 5 D View Figure 5 ). Mesopleuron sparsely punctate except episcrobal area (Fig. 5 F View Figure 5 ) coriaceous and impunctate; central circular depression coriaceous (Fig. 5 F View Figure 5 ); episternal sulcus crenulate, broadened, internal longitudinal ridges conspicuously exceeding lateral margin; hypersternaulus inconspicuous crenulations faint (Fig. 5 F View Figure 5 ). Mesosternum densely finely punctate. Metanotum finely coriaceous (Fig. 5 D View Figure 5 ). Metapleuron conspicuously separated from propodeal lateral surface; dorsally smooth, without ridges (Fig. 5 F View Figure 5 ). Propodeal dorsum with conspicuous longitudinal ridges from base to apex, between ridges with inconspicuous short transverse carinae forming reticulate pattern (Fig. 5 E View Figure 5 ); posterior surface with median sulcus narrowing from base to apex, internally extremely narrow; posterolaterally with densely transverse ridges (Fig. 5 E View Figure 5 ); lateral surface of propodeum with irregular oblique carinae, internal oblique carinae with few inconspicuous short ridges (Fig. 5 F View Figure 5 ).

Wings. Recurrent vein with stub of vein just before its junction with submarginal cell (Fig. 5 G View Figure 5 ).

Metasoma. Metasoma spindly; terga polished, terga I and II sparsely, finely punctate; remaining terga finely coriaceous. Sternum I with keeled projection, laterally to keel without conspicuous ridges. Basal third of sternum II with deep transverse groove, groove surface coriaceous.

Male. Unknown.

Distribution.

China ( Yunnan).

Etymology.

The specific epithet tumidiscuta combines the Latin “ tumid - ” and “ scuta ”, referring to the conspicuously convex mesonotum of this species.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Crabronidae

Genus

Nitela