Tetrastichus nataliedaleskeyae, 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 nataliedaleskeyae sp. n.

Materials

Type status: Holotype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-27768-D04; catalogNumber: BC-ZSM-HYM-27768-D04 ; recordNumber: BC-ZSM-HYM-27768-D04; recordedBy: J.S. Noyes; individualID: BC-ZSM-HYM-27768-D04; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichusnataliedaleskeyae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; taxonRemarks: Holotype deposited in NHM; Location: country: Romania; decimalLatitude: 46.985; decimalLongitude: 27.585; Record Level: type: PhysicalObject; language: en; institutionCode: NHM; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-27770-H06; catalogNumber: BC-ZSM-HYM-27760-H06 ; recordNumber: BC-ZSM-HYM-27760-H06; recordedBy: N. Dale-Skey; individualID: BC-ZSM-HYM-27770-H06; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichusnataliedaleskeyae; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: United Kingdom; decimalLatitude: 51.4669; decimalLongitude: 0.2358; Record Level: type: PhysicalObject; language: en; institutionCode: NHM; basisOfRecord: PreservedSpecimen

Description

FEMALE holotype (Fig. 82). Body length 1.7 mm (paratype 1.4-2.0 mm). Head. Width/length in dorsal view 2.5, width/length in frontal view 1.3, POL/OOL 2.2, widths head/mesosoma 1.1, mouth width/malar space 1.0, malar space/eye height 0.7. Antenna. Scape length/eye height 0.9, pedicel+flagellum length/mesosoma width 1.3, length/width F1, F2, F3 2.3, 2.0, 1.7, clava length/width 3.3, lengths pedicel/F1 0.6, lengths F1/F2 1.0, F1/F3 1.1, lengths F1, F2, F3/clava 0.5, 0.6, 0.5, widths F1/pedicel (dorsal view) 1.1, lengths antennal spicule/C3 0.2. Mesosoma. Length/width 1.4, mesoscutal mid-lobe length/width 1.0 (width measured in anterior part), mid-lobe with a median groove in posterior ⅔, with three adnotaular setae on each side, lengths mesoscutum/mesoscutellum (measured medially) 1.3, mesoscutellum length/width 1.0, length/width of enclosed space between submedian grooves 2.4, distance between SMG/distance between SMG and SLG 1.6, lengths dorsellum/propodeum (measured medially) 0.6, propodeal callus with four setae. Fore wing. Costal cell length/width 9.0, lengths costal cell/marginal vein 0.9, lengths marginal/stigmal veins 2.8. Gaster. Ovate, length/width 1.5, lengths gaster/mesosoma 1.1, Gt7 length/width 0.5, length of longest cercal seta/next longest seta 1.6, longest cercal seta curved, ovipositor sheaths reach apex of Gt7, but not beyond.

Colour. Head and mesosoma with metallic bluish-green tinges, gaster golden-green, entire antenna dark brown, tegulae black, wings hyaline with venation yellowish-white, coxae and femora concolorous with body, trochanters black, tibiae dark yellowish-brown, fore tarsus dark yellowish-brown, mid and hind tarsi yellowish-white with T4 dark brown.

MALE. Unknown.

Diagnosis

Similar to T. leocrates , but with gaster and Gt7 shorter; also similar to T. sinope , but with longer distance between submedian grooves on mesoscutellum and to T. ballotus , but with shorter antennal clava and shorter marginal vein in fore wing.

Etymology

Named after Natalie Dale-Skey, curator of the Hymenoptera section at the NHM, who collected one type specimen and for having been a great help with logistics at the NHM.

Distribution

Romania and United Kingdom.

Ecology

Host

Unknown.

Notes

Holotype and parytype deposited in NHM.