Tetrastichus scardiae, Hansson & Schmidt, 2020

Hansson, Christer & Schmidt, Stefan, 2020, A revision of European species of the genus Tetrastichus Haliday (Hymenoptera: Eulophidae) using integrative taxonomy, Biodiversity Data Journal 8, pp. 59177-59177 : 59177

Tetrastichus scardiae sp. n.

Materials

Type status: Holotype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-B08; catalogNumber: BC-ZSM-HYM-25461-B08 ; recordNumber: BC-ZSM-HYM-25461-B08; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-B08; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; taxonRemarks: Holotype deposited in ZSM; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; institutionCode: ZSM; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-B12; catalogNumber: BC-ZSM-HYM-25461-B12 ; recordNumber: BC-ZSM-HYM-25461-B12; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-B12; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-B11; catalogNumber: BC-ZSM-HYM-25461-B11 ; recordNumber: BC-ZSM-HYM-25461-B11; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-B11; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-B07; catalogNumber: BC-ZSM-HYM-25461-B07 ; recordNumber: BC-ZSM-HYM-25461-B07; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-B07; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-B05; catalogNumber: BC-ZSM-HYM-25461-B05 ; recordNumber: BC-ZSM-HYM-25461-B05; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-B05; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-B04; catalogNumber: BC-ZSM-HYM-25461-B04 ; recordNumber: BC-ZSM-HYM-25461-B04; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-B04; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-B03; catalogNumber: BC-ZSM-HYM-25461-B03 ; recordNumber: BC-ZSM-HYM-25461-B03; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-B03; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-B02; catalogNumber: BC-ZSM-HYM-25461-B02 ; recordNumber: BC-ZSM-HYM-25461-B02; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-B02; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-B01; catalogNumber: BC-ZSM-HYM-25461-B01 ; recordNumber: BC-ZSM-HYM-25461-B01; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-B01; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-A12; catalogNumber: BC-ZSM-HYM-25461-A12 ; recordNumber: BC-ZSM-HYM-25461-A12; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-A12; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-A11; catalogNumber: BC-ZSM-HYM-25461-A11 ; recordNumber: BC-ZSM-HYM-25461-A11; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-A11; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-A10; catalogNumber: BC-ZSM-HYM-25461-A10 ; recordNumber: BC-ZSM-HYM-25461-A10; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-A10; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-A09; catalogNumber: BC-ZSM-HYM-25461-A09 ; recordNumber: BC-ZSM-HYM-25461-A09; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-A09; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-A08; catalogNumber: BC-ZSM-HYM-25461-A08 ; recordNumber: BC-ZSM-HYM-25461-A08; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-A08; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-A07; catalogNumber: BC-ZSM-HYM-25461-A07 ; recordNumber: BC-ZSM-HYM-25461-A07; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-A07; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-A05; catalogNumber: BC-ZSM-HYM-25461-A05 ; recordNumber: BC-ZSM-HYM-25461-A05; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-A05; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-B10; catalogNumber: BC-ZSM-HYM-25461-B10 ; recordNumber: BC-ZSM-HYM-25461-B10; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-B10; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-B09; catalogNumber: BC-ZSM-HYM-25461-B09 ; recordNumber: BC-ZSM-HYM-25461-B09; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-B09; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-B06; catalogNumber: BC-ZSM-HYM-25461-B06 ; recordNumber: BC-ZSM-HYM-25461-B06; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-B06; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-25461-A06; catalogNumber: BC-ZSM-HYM-25461-A06 ; recordNumber: BC-ZSM-HYM-25461-A06; recordedBy: H. Lappalainen; individualID: BC-ZSM-HYM-25461-A06; individualCount: 1; lifeStage: adult; Taxon: scientificName: Tetrastichusscardiae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Finland; decimalLatitude: 62.601; decimalLongitude: 29.759; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen

Description

FEMALE holotype (Fig. 87). Body length 2.3 mm (paratypes 2.0-2.2 mm). Head. Width/length in dorsal view 2.0, width/length in frontal view 1.0, POL/OOL 0.9, widths head/mesosoma 0.9, mouth width/malar space 1.3, malar space/eye height 1.1. Antenna. Scape length/eye height 1.1, pedicel+flagellum length/mesosoma width 0.9, length/width F1, F2, F3 1.3, 1.3, 1.5, clava length/width 3.1, lengths pedicel/F1 1.4, lengths F1/F2 0.8, F1/F3 0.7, lengths F1, F2, F3/clava 0.3, 0.4, 0.4, widths F1/pedicel (dorsal view) 0.9, lengths antennal spicule/C3 0.3. Mesosoma. Length/width 1.4, mesoscutal mid-lobe length/width 0.8 (width measured in anterior part), mid-lobe with median groove in posterior ⅓, with four adnotaular setae on each side, lengths mesoscutum/mesoscutellum (measured medially) 1.3, mesoscutellum length/width 0.8, length/width of enclosed space between submedian grooves 2.6, distance between SMG/distance between SMG and SLG 1.1, lengths dorsellum/propodeum 0.5, propodeum with weak reticulation, propodeal callus with four setae. Fore wing. Costal cell length/width 8.2, lengths costal cell/marginal vein 1.1, lengths marginal/stigmal veins 2.4. Gaster. Ovate, length/width 1.6, lengths gaster/mesosoma 1.1, Gt7 length/width 0.4, length of longest cercal seta/next longest seta 2.0, longest cercal seta strongly curved, ovipositor sheaths reach apex of Gt7, but not beyond.

Colour. Body with weak metallic green tinges, scape yellowish-brown, pedicel brownish, flagellum dark brown, tegulae dark brown, wings hyaline with veins yellow-white to brown, coxae and femora concolorous with body, trochanters dark brown, tibiae and tarsi yellowish-brown.

MALE. There are four males in the type series, but all specimens are badly damaged and fragmented and all specimens lack pedicel+flagellum. The antenna holds several diagnostic characters and without them and, as the specimens are broken, it is not possible to give a useful description. However, the male shares the same diagnostic features as the female, except characters in the antenna and it should be possible to recognise the characters through these.

Diagnosis

Posterior ocelli close, POL/OOL= 0.9; eyes small and malar space large, length of eye/malar space = 0.9 in female, 1.0 in male; female antenna short, length pedicel+flagellum/width of mesosoma = 0.9, with F1 and F2 ± merged in most specimens (incl. holotype, only two of the paratypes have these flagellomeres separated); submedian grooves on mesoscutellum distinctly converging towards posterior part; mesoscutum and mesoscutellum with weak reticulation and shiny.

Distribution

Finland.

Ecology

Host

Scardia boletella (Fabricius) ( Lepidoptera : Tineidae ). There is no information if all specimens in the type series are from the same host specimen, but as the identical barcode in all specimens indicates that they are from the same clutch (including 20♀ and 4♂), this is probably the case. Thus, this species is a gregarious endoparasitoid.

Notes

Holotype deposited in ZSM, paratypes in MZLU, NHM and ZSM.