Spilomicrus politus Huebner & Chemyreva, 2024

Huebner, Jeremy Joshua & Chemyreva, Vasilisa, 2024, Review of German Spilomicrus Westwood (Hymenoptera, Diapriidae, Spilomicrini), Biodiversity Data Journal 12, pp. 114515-114515 : 114515

Spilomicrus politus Huebner & Chemyreva sp. nov.

Materials

Type status: Holotype. Occurrence: catalogNumber: ZSM-HYM-42456-C12 ; recordedBy: Huebner & Chemyreva; individualCount: 1; sex: female; lifeStage: adult; otherCatalogNumbers: BOLD:ACZ2358; occurrenceID: 2C22789C-3D9D-5594-9D9E-71E8AC0ABD87; Taxon: scientificName: Spilomicrus politus; kingdom: Animalia ; phylum: Arthropoda ; class: Insecta ; order: Hymenoptera ; family: Diapriidae ; genus: Spilomicrus ; specificEpithet: politus; scientificNameAuthorship: Huebner & Chemyreva, 2023; Location : continent: Europe ; country: Germany; stateProvince: Bavaria; locality: Munich ; verbatimElevation: 516; decimalLatitude: 48.164; decimalLongitude: 11.497; Identification : identifiedBy: V. Chemyreva I J. Huebner; dateIdentified: 2023; Event : eventID: gb.botgar1.10; samplingProtocol: malaise trap; eventDate: 01-Sep-2021; Record Level: ownerInstitutionCode: SNSB-ZSM Type status: Paratype. Occurrence: catalogNumber: ZSM-HYM-42369-G02 ; recordedBy: Huebner & Chemyreva; individualCount: 1; sex: female; lifeStage: adult; otherCatalogNumbers: BOLD:ACZ2358; occurrenceID: EF90EABD-F85F-52CF-8EE2-796379EB829F; Taxon: scientificName: Spilomicrus politus; kingdom: Animalia ; phylum: Arthropoda ; class: Insecta ; order: Hymenoptera ; family: Diapriidae ; genus: Spilomicrus ; specificEpithet: politus; scientificNameAuthorship: Huebner & Chemyreva, 2023; Location : continent: Europe ; country: Germany; stateProvince: Baden-Wuerttemberg; locality: Gaggenau ; verbatimElevation: 340; decimalLatitude: 48.821; decimalLongitude: 8.388; Identification : identifiedBy: V. Chemyreva I J. Huebner; dateIdentified: 2023; Event : eventID: dd.mbach.05; samplingProtocol: malaise trap; eventDate: 21-Aug-2011; Record Level: ownerInstitutionCode: SNSB-ZSM Type status: Paratype. Occurrence: catalogNumber: ZSM-HYM-42373-F02 ; recordedBy: Huebner & Chemyreva; individualCount: 1; sex: female; lifeStage: adult; otherCatalogNumbers: BOLD:ACZ2358; occurrenceID: E1875FF2-D75C-554D-B113-04D0EE157E8C; Taxon: scientificName: Spilomicrus politus; kingdom: Animalia ; phylum: Arthropoda ; class: Insecta ; order: Hymenoptera ; family: Diapriidae ; genus: Spilomicrus ; specificEpithet: politus; scientificNameAuthorship: Huebner & Chemyreva, 2023; Location : continent: Europe ; country: Germany; stateProvince: Bavaria; locality: Munich ; verbatimElevation: 516; decimalLatitude: 48.164; decimalLongitude: 11.497; Identification : identifiedBy: V. Chemyreva I J. Huebner; dateIdentified: 2023; Event : eventID: gb.botgar1.09; samplingProtocol: malaise trap; eventDate: 11-Aug-2021; Record Level: ownerInstitutionCode: SNSB-ZSM Type status: Paratype. Occurrence: catalogNumber: ZSM-HYM-42466-G05 ; recordedBy: Huebner & Chemyreva; individualCount: 1; sex: female; lifeStage: adult; otherCatalogNumbers: BOLD:ACZ2358; occurrenceID: C7CE6D4E-9617-55DE-A7AD-03ADCFFD1528; Taxon: scientificName: Spilomicrus politus; kingdom: Animalia ; phylum: Arthropoda ; class: Insecta ; order: Hymenoptera ; family: Diapriidae ; genus: Spilomicrus ; specificEpithet: politus; scientificNameAuthorship: Huebner & Chemyreva, 2023; Location : continent: Europe ; country: Germany; stateProvince: Bavaria; locality: Paehl ; verbatimElevation: 720; decimalLatitude: 47.941; decimalLongitude: 11.183; Identification : identifiedBy: V. Chemyreva I J. Huebner; dateIdentified: 2023; Event : eventID: dd.pmor5.06; samplingProtocol: malaise trap; eventDate: 27-Aug-2020; Record Level: ownerInstitutionCode: SNSB-ZSM

Description

Female (holotype). Body length 1.8 mm; forewing extending far beyond apex of metasoma; antenna 0.68 times as long as body. Head: black, in dorsal 0.95 times as wide as metasoma. Tentorial pits absent. Clypeus weakly convex, 0.6 times as high as wide. Mandible dark brown, elongate, its upper tooth slightly shorter than lower tooth. Palpi yellow. Eye oval, with scattered long setae, 0.42 times as high as head and 1.9 times as high as malar space. Postgenal cushion dense. Antennae: A1 slightly curved, broadened apically, finely coriaceous; its apical rim simple. A2 not compressed. Apical half of A1 and A2-A8 dark brown, A9-A13 dark brown. Antenna A10-A13 with MGS brush, flattened on ventral side. A10-A12 as long as wide. A13 distinctly narrower than A12 and 1.1 times as long as A12. Antennomers length to width ratios in dorsal view as in Fig. 12 A and D; A13 with small shallow ventral tip. Mesosoma: black, as wide as high. Neck bare, with longitudinal grooves. Pronotum with median area and pronotal corner pubescent, pronotal cushion dense; pronotal corner weakly prominent, rounded; lateral area of pronotum smooth and bare. Tegula dark brown, large. Mesopleuron smooth, shiny and bare, with subalar ridge. Sternaulus absent. Epicnemial pit tiny and bare inside. Ventral side of mesopleuron pubescent. Mesoscutum 1.25 times as wide as long, without notauli. Humeral sulcus distinct and narrow. Anterior scutellar pitscircular with short and low elongate keels posteriorly (Fig. 12 B). Lateral scutellar pit broad. Posterior scutellar pits distinct. Metanotum sparse pubescent, coarsely sculptured, metascutellum with three low longitudinal keels. Propodeum pubescent and coarsely rugose, its posterior margin without arcuate emargination in dorsal view between plicae. Median propodeal keel projecting into high spine anteriorly. All legs slender, pale brown, with separated trochantelli. Wings: Marginal vein elongate, twice as long as its median width. Stigmal vein as wide as width of marginal vein. Costa and basal veins sclerotised, weakly pigmented. Metasoma: Petiole cylindrical, 1.3 times as long as wide, striate, weakly setose dorsally (with hirsute belt medially) and densely pubescent ventrally. T2 about 3.9-4.5 times as long as petiole, smooth and bare. T3-T6 and S3-S6 with few erect long setae, almost smooth (with small area of micropunctures medially). T5 weakly expanded laterally. T7 subtriangle, with long setae around spiracles. S6 pointed, more densely pubescent on the top.

Male (BOLD: AER1505). Body length 1.6 mm. Similar to female, but differs by the following features: antenna filiform, A2-A13 brown, A1 dark brown (Fig. 13 A, B and D); A4 with keel running from base to 0.7 of the segment; A4 as long as A3 and 1.2 times as long as A5; A5-A10 about twice as long as wide in dorsal view; malar space 0.47 times as long as pleurostomal distance and 0.54 times as long as largest diameter of eye; petiole twice as long as wide; T2 2.8 times as long as petiole. S8 densely micropunctate.

Diagnosis

The species closely resembles S. diversus Chemyreva, 2021 from which it can be distinguished by the combination of the following features: A11 and A12 2.7 times as wide as A5 (A11-A12 about 2.3 times as wide as A5 in S. diversus ); the malar sulcus is totally absent (visible in the form of shallow furrow in S. diversus ); frons above base of toruli smooth (Fig. 13 C) (with two small round and shallow depressions in S. diversus ).

Etymology

The name of the new species is a Latin masculine adjective " Spilomicrus politus " (smooth).

Distribution

Estonia, Georgia (Republic of Abkhazia and Autonomous Republic of Adjara), Germany, Romania, Russia (European part).

Notes

The new species Spilomicrus politus sp. nov. was assigned two BINs, BOLD:ACZ2358 and BOLD:AER1505. It was not reliably possible to separate those two BINs into two morphologically sound species. The distance between those two BINs is 1.74%, whereas the distances to Spilomicrus diversus (BOLD:ADF4749) are 2.59% (BOLD:ACZ2358) and 3.12 % (BOLD:AER1505), the distance to S. modestus is 13.6%. The fact that both BINs of the S. politus sp. nov. differ in under 2% of the bases in their sequences leads to the suspicion that the specimens might just be one species.

Figures

Figure 12. Female holotype Spilomicrus politus sp. nov. (ZSM-HYM- 42456 - C 12; BOLD: ACZ 2358). A lateral; B dorsal; C face; D antenna dorsal.

Figure 13. Male Spilomicrus politus sp. nov. (ZSM-HYM- 42318 - B 01; BOLD: AER 1505). A lateral; B dorsal; C head dorsal without holes, bare area marked with red arrow; D antenna.