Foersterella Dalla Torre

Hansson, Christer, 2016, The European species of Foersterella Dalla Torre (Hymenoptera: Tetracampidae), including the description of two new species, Zootaxa 4137 (4), pp. 561-568 : 562

publication ID

https://doi.org/ 10.11646/zootaxa.4137.4.8

publication LSID

lsid:zoobank.org:pub:9935AF06-E546-4E3A-829D-DCC930B3EC2F

DOI

https://doi.org/10.5281/zenodo.6057903

persistent identifier

https://treatment.plazi.org/id/E56F87C4-3E28-FF87-FF55-06D2FC5B4C47

treatment provided by

Plazi

scientific name

Foersterella Dalla Torre
status

 

Foersterella Dalla Torre View in CoL View at ENA

Hyperbius Förster, 1878: 58 . Type species: Tetracampe flavipes Förster (1841) View in CoL , by original designation and monotypy. Name preoccupied by Hyperbius Stål (1867) .

Foersterella Dalla Torre, 1897: 86 View in CoL . Replacement name.

Species identification. Species of Foersterella View in CoL are characterized by a short petiole that is wider than long, a very long antennal pedicel that is 2.3–2.5× as long as wide and at least twice as long as the first flagellomere, an antennal clava that usually is distinctly wider than the first flagellomere, and by an enlarged male scape that is about twice as long as wide and pale yellow. They are morphologically very similar to one another, displaying differentiating characters mainly in the male antenna and to some extent in the female gaster. Thus, without additional information, such as host or molecular data, it is difficult to associate females and males of the same species in this genus. When F. erdoesi View in CoL was described by Bouček (1958) he unknowingly associated female and male incorrectly. The female and male included in the description belong to two different species, which became clear when I was able to examine a small series (2♀, 3♂ in BMNH) of reared specimens from Cassida viridis View in CoL from Romania. Females of this series agree well with the original description of F. erdoesi View in CoL whereas the males are different from the male described as F. erdoesi View in CoL . Bouček did not have access to reared material so his mistake is understandable. The holotype of F. erdoesi View in CoL is a female so this is the name-bearing sex. The antennal flagellum of the male described as F. erdoesi View in CoL is different from that of the true F. erdoesi View in CoL male in that it is completely dark ( Figs 4 View FIGURES 1 – 6. 1 – 4 , 10 View FIGURES 7 – 13 ), whereas it is bicoloured in F. erdoesi View in CoL ( Figs 2 View FIGURES 1 – 6. 1 – 4 , 7 View FIGURES 7 – 13 ) and F. reptans View in CoL ( Figs 3 View FIGURES 1 – 6. 1 – 4 , 8 View FIGURES 7 – 13 ), the other European species. The male of F. erdoesi sensu Bouček View in CoL is here described as a new species.

Females identified as F. erdoesi differ from other females examined here as indicated in the key below. The other females (101 females examined from Austria (2), Czech Republic (7), England (20), France (7), Hungary (1), Slovakia (1), Spain (2), and Sweden (61), in BMNH and MZLU), do not show any noticeable morphological differences. In view of that there are three additional species apart from F. erdoesi , it is difficult to assign a species identity to these females. The females of these three species therefore have to remain unassociated until biological and/or molecular information facilitates their species association to males.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Tetracampidae

Loc

Foersterella Dalla Torre

Hansson, Christer 2016
2016
Loc

Foersterella

Dalla Torre 1897: 86
1897
Loc

Hyperbius Förster, 1878: 58

Forster 1878: 58
1878
Loc

Hyperbius Stål (1867)

Stal 1867
1867
Loc

Tetracampe flavipes Förster (1841)

Forster 1841
1841
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