Chrysis equestris
| Notice: | This page is derived from the original publication listed below, whose author(s) should always be credited. Further contributors may edit and improve the content of this page and, consequently, need to be credited as well (see page history). Any assessment of factual correctness requires a careful review of the original article as well as of subsequent contributions.
If you are uncertain whether your planned contribution is correct or not, we suggest that you use the associated discussion page instead of editing the page directly. This page should be cited as follows (rationale):
Citation formats to copy and paste
BibTeX: @article{Paukkunen2015ZooKeys, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Paukkunen2015ZooKeys">{{Citation See also the citation download page at the journal. |
Ordo: Hymenoptera
Familia: Chrysididae
Genus: Chrysis
Name
Chrysis equestris Dahlbom, 1854 – Wikispecies link – Pensoft Profile
- Chrysis sexdentata? Dahlbom, 1831: 30, not Christ, 1791.
- Chrysis zetterstedti of authors, not Dahlbom, 1845.
- Chrysis equestris Dahlbom, 1854: 307.
- Chrysis fasciata of authors, not Olivier, 1790.
Diagnosis
Length 7–10 mm. Both sexes have a mostly dark blue or black, partially violet, body with green reflections on the frons, margins of the pronotum, mesoscutum, mesoscutellum and mesopleuron. The tergites have contrasting golden red or golden green bands posteriorly (except on the apical rim), which are especially wide laterally on T1 and T2. The colour and form of the bands is quite variable, usually they are wider and more reddish in the female than in the male. The species closely resembles Chrysis zetterstedti, but is characterised by the following differences: the black spots of S2 are narrower, usually not extending to the lateral margins of the sternite (Fig. 112), T5 of the female (on ovipositor) is broader and has a longitudinal medial groove (Fig. 89), the head is broader, especially in female (shortest distance between the compound eyes is slightly longer than the diameter of an eye) (Fig. 151), the gonostyle is shorter, the cuspis is apically curved (not straight) (Fig. 134), and the propodeal tooth is slightly convex or straight ventrally (not lobate).
Distribution
Estonia, Finland, Lithuania, Norway, Sweden. Rare. – Trans-Palearctic: from western Europe to Russian Far East (Sakhalin).
Biology
Habitat: forest margins, clearings and gardens with sun-exposed dead wood. Adults are usually found on sun-exposed dead tree trunks and stumps, most often of Populus, but also of Salix, Betula and Alnus, rarely Picea and Pinus. They also fly near log piles, telephone poles and walls of old wooden buildings (Frey 1915[1], Linsenmaier 1997[2]). Flight period: mid-May to early August. Host: Discoelius dufourii Lepeletier and Discoelius zonalis (Panzer) (Vespidae) (Pärn et al. 2014[3], our own obs.).
Taxon Treatment
- Paukkunen, J; Berg, A; Soon, V; Ødegaard, F; Rosa, P; 2015: An illustrated key to the cuckoo wasps (Hymenoptera, Chrysididae) of the Nordic and Baltic countries, with description of a new species ZooKeys, (548): 1-116. doi
Images
|
Other References
- ↑ Frey R (1915) [Meeting report: Chrysis zetterstedti and C. rutilans new to Finland from Pärnå.] Meddelanden af Societas pro Fauna et Flora Fennica 41: 43.
- ↑ Linsenmaier W (1997) Die Goldwespen der Schweiz. Veröffentlichungen aus dem Natur-Museum Luzern 9: 1–139.
- ↑ Pärn M, Soon V, Vallisoo T, Hovi K, Luig J (2014) Host specificity of the tribe Chrysidini (Hymenoptera, Chrysididae) in Estonia ascertained with trap-nesting. European Journal of Entomology 112: 91–99. doi: 10.14411/eje.2015.012
