Tetrastichus lixalius, 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 lixalius sp. n.

Materials

Type status: Holotype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-21587-A03; catalogNumber: BC-ZSM-HYM-21587-A03 ; recordNumber: BC-ZSM-HYM-21587-A03; recordedBy: C.Hansson; individualID: BC-ZSM-HYM-21587-A03; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichuslixalius; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; taxonRemarks: Holotype deposited in MZLU; Location: country: Sweden; decimalLatitude: 56.625; decimalLongitude: 16.702; Record Level: type: PhysicalObject; language: en; institutionCode: MZLU; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-21587-D09; catalogNumber: BC-ZSM-HYM-21587-D09 ; recordNumber: BC-ZSM-HYM-21587-D09; recordedBy: C.Hansson; individualID: BC-ZSM-HYM-21587-D09; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichuslixalius; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Sweden; decimalLatitude: 56.57; decimalLongitude: 16.531; 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-21587-D10; catalogNumber: BC-ZSM-HYM-21587-D10 ; recordNumber: BC-ZSM-HYM-21587-D10; recordedBy: C.Hansson; individualID: BC-ZSM-HYM-21587-D10; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichuslixalius; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Sweden; decimalLatitude: 56.57; decimalLongitude: 16.531; 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-13565-G10; catalogNumber: BC-ZSM-HYM-13565-G10 ; recordNumber: BC-ZSM-HYM-13565-G10; recordedBy: SMTP; individualID: BC-ZSM-HYM-13565-G10; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Tetrastichuslixalius; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Sweden; decimalLatitude: 56.378; decimalLongitude: 16.295; 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-20721-F05; catalogNumber: BC-ZSM-HYM-20721-F05 ; recordNumber: BC-ZSM-HYM-20721-F05; recordedBy: C. Hansson; individualID: BC-ZSM-HYM-20721-F05; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichuslixalius; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Sweden; decimalLatitude: 55.533; decimalLongitude: 12.917; 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-20721-C08; catalogNumber: BC-ZSM-HYM-20721-C08 ; recordNumber: BC-ZSM-HYM-20721-C08; recordedBy: C. Hansson; individualID: BC-ZSM-HYM-20721-C08; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Tetrastichuslixalius; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Sweden; decimalLatitude: 55.533; decimalLongitude: 13.133; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen

Description

FEMALE holotype (Fig. 49). Body length 1.9 mm (paratypes 1.7-1.9 mm). Head. Width/length in dorsal view 2.4, width/length in frontal view 1.3, POL/OOL 1.9, widths head/mesosoma 1.1, mouth width/malar space 1.1, malar space/eye height 0.7. Antenna. Scape length/eye height 0.9, pedicel+flagellum length/mesosoma width 1.2, length/width F1, F2, F3 1.3, 1.3, 1.2, clava length/width 2.8, lengths pedicel/F1 0.9, lengths F1/F2 1.0, F1/F3 1.1, lengths F1, F2, F3/clava 0.4, 0.4, 0.4, widths F1/pedicel (dorsal view) 1.4, lengths antennal spicule/C3 0.3. Mesosoma. Length/width 1.4, mesoscutal mid-lobe length/width 1.0 (width measured in anterior part), mid-lobe without median groove, with four adnotaular setae on each side, lengths mesoscutum/mesoscutellum (measured medially) 1.4, mesoscutellum length/width 0.8, length/width of enclosed space between submedian grooves 2.6, distance between SMG/distance between SMG and SLG 1.3, lengths dorsellum/propodeum 0.6, propodeum with strong reticulation, propodeal callus with two setae. Fore wing. Costal cell length/width 14.4, lengths costal cell/marginal vein 1.1, lengths marginal/stigmal veins 3.6. Gaster. Long ovate, length/width 1.8, lengths gaster/head+mesosoma 0.9, Gt7 length/width 0.6, length of longest cercal seta/next longest seta 1.6, longest cercal seta evenly curved, ovipositor sheaths not reaching apex of Gt7.

Colour. Body with weak metallic greenish-blue tinges, entire antenna dark brown, tegulae black, wing hyaline with venation brown to fuscous, coxae and femora concolorous with body, trochanters dark brown, fore tibia yellowish-brown, mid tibia brownish, hind tibia dark brown, tarsi brownish with T4 darkest.

MALE. Body length 1.6-1.7 mm. Head. Width/length in dorsal view 2.4, width/length in frontal view 1.3, mouth width/malar space 1.2, widths head/mesosoma 1.1, eye height/malar space 1.3. Antenna. F1-F4 with basal whorls of setae, reaching beyond apex of corresponding flagellomere, scape length/eye height 1.0, scape length/width 2.6, ventral plaque placed in central part of scape, lengths ventral plaque/scape 0.8, pedicel+flagellum length/mesosoma width 1.2, length/width F1, F2, F3, F4 1.2, 1.6, 1.8, 1.7, clava length/width 3.9, lengths pedicel/F1 1.0, lengths F1/F2 0.8, F1/F3 0.7, F1/F4 0.7, lengths F1, F2, F3, F4/clava 0.3, 0.4, 0.5, 0.4.

Colour as in female.

Diagnosis

Female gaster long ovate, 1.8 × as long as wide. See key for separation from similar species.

Distribution

Sweden.

Ecology

Host

Unknown.

Notes

Holotype deposited in MZLU, paratypes in MZLU and SMTP.