Tetrastichus sti, 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 sti sp. n.

Materials

Type status: Holotype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-13565-E11; catalogNumber: BC-ZSM-HYM-13565-E11 ; recordNumber: BC-ZSM-HYM-13565-E11; recordedBy: SMTP project; individualID: BC-ZSM-HYM-13565-E11; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichussti; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; taxonRemarks: Holotype deposited in SMTP; Location: country: Sweden; decimalLatitude: 58.3; decimalLongitude: 14.617; Record Level: type: PhysicalObject; language: en; institutionCode: SMTP; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-22523-F12; catalogNumber: BC-ZSM-HYM-22523-F12 ; recordNumber: BC-ZSM-HYM-22523-F12; recordedBy: O.Popovici; individualID: BC-ZSM-HYM-22523-F12; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichussti; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Romania; decimalLatitude: 46.594; decimalLongitude: 27.353; 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-G08; catalogNumber: BC-ZSM-HYM-21587-G08 ; recordNumber: BC-ZSM-HYM-21587-G08; recordedBy: C.Hansson; individualID: BC-ZSM-HYM-21587-G08; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichussti; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Sweden; decimalLatitude: 55.834; decimalLongitude: 13.528; 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-B10; catalogNumber: BC-ZSM-HYM-13565-B10 ; recordNumber: BC-ZSM-HYM-13565-B10; recordedBy: SMTP project; individualID: BC-ZSM-HYM-13565-B10; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichussti; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Sweden; decimalLatitude: 58.3; decimalLongitude: 14.617; 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-22523-A01; catalogNumber: BC-ZSM-HYM-22523-A01 ; recordNumber: BC-ZSM-HYM-22523-A01; recordedBy: Swedish Malaise Trap Project; individualID: BC-ZSM-HYM-22523-A01; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichussti; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Sweden; decimalLatitude: 58.185; decimalLongitude: 14.379; 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-E12; catalogNumber: BC-ZSM-HYM-13565-E12 ; recordNumber: BC-ZSM-HYM-13565-E12; recordedBy: SMTP Project; individualID: BC-ZSM-HYM-13565-E12; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichussti; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Sweden; decimalLatitude: 58.3; decimalLongitude: 14.617; Record Level: type: PhysicalObject; language: en; institutionCode: SMTP; basisOfRecord: PreservedSpecimen

Description

FEMALE holotype (Fig. 36). Body length 2.1 mm (paratypes 1.5-2.0 mm). Head. Width/length in dorsal view 2.2, width/length in frontal view 1.3, POL/OOL 2.0, widths head/mesosoma 1.0, mouth width/malar space 0.9, malar space/eye height 0.8. Antenna. Scape length/eye height 1.1, pedicel+flagellum length/mesosoma width 1.3, length/width F1, F2, F3 2.4, 2.3, 2.2, clava length/width 4.4, lengths pedicel/F1 0.6, lengths F1/F2 1.0, F1/F3 1.1, lengths F1, F2, F3/clava 0.6, 0.5, 0.5, widths F1/pedicel (dorsal view) 1.0, lengths antennal spicule/C3 0.3. Mesosoma. Length/width 1.5, mesoscutal midlobe length/width 0.9 (width measured in anterior part), mid-lobe with median groove in posterior ¾, with five adnotaular setae on each side, lengths mesoscutum/mesoscutellum (measured medially) 1.3, mesoscutellum length/width 0.9, length/width of enclosed space between submedian grooves 2.6, distance between SMG/distance between SMG and SLG 1.5, lengths dorsellum/propodeum (measured medially) 0.5, propodeum with strong reticulation, propodeal callus with four setae. Fore wing. Costal cell length/width 10.0, lengths costal cell/marginal vein 0.9, lengths marginal/stigmal veins 3.3. Gaster. Subcircular to ovate, length/width 1.3, lengths gaster/mesosoma 1.1, Gt7 length/width 0.4, length of longest cercal seta/next longest seta 1.3, longest cercal seta curved in apical ⅓, ovipositor sheaths not reaching apex of Gt7.

Colour. Body golden-green, entire antenna dark brown, tegulae black with metallic tinge, wings hyaline with veins brown to fuscous, coxae and femora concolorous with body, trochanters dark brown, tibiae yellowish-brown, fore tarsus brown, mid and hind tarsi with T1-2 yellowish-white and T3-4 brown.

Variation. Paratypes with body metallic blue, green or blue-green.

MALE. Body length 1.7 mm. Head. Width/length in dorsal view 2.3, width/length in frontal view 1.3, eye height/malar space 1.2, mouth width/malar space 1.0, widths head/mesosoma 1.1. Antenna. F1-F4 without basal whorls of setae, scape length/eye height 1.2, scape length/width 3.0, ventral plaque placed in central part of scape, lengths ventral plaque/scape 0.7, length/width F1, F2, F3, F4 1.6, 2.4, 2.3, 2.5, lengths pedicel/F1 0.8, lengths F1/F2 0.7, F1/F3 0.8, F1/F4 0.8.

Colour. As in female. Body metallic blue-green.

Diagnosis

Mid and hind tibiae yellowish-brown; mesoscutellum with distance between submedian grooves 1.5 × distance between submedian and sublateral grooves; female with malar space 0.8 × height of eye, antenna with F2 2.3 ×, F3 2.2 × and clava 4.4 × as long as wide, clava with a strong constriction between C1 and C2; male antenna with scape 3.0 × as long as wide and 1.0 × as long as height of eye, length/width F1, F2, F3, F4 1.6, 2.4, 2.3, 2.5.

Etymology

Named after acronym STI = Swedish Taxonomy Initiative, the major funding source for this project.

Distribution

Romania, Sweden and United Kingdom.

Notes

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

Host

Unknown.

Additional paratype (not barcoded)

1♀ "ENGLAND: Lincolnshire, Woodhall Spa, (2), 27.vii.1968, M.W.R.de V. Graham". Paratypes in MZLU, NHM, SMTP.