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Diadegma semiclausum (Hellén)

(Life: Kingdom: Metazoa (animals); Phylum: Arthropoda; Class: Hexapoda; Order: Hymenoptera;  Superfamily: Ichneumonoidea; Family: Ichneumonidae; Subfamily: Campopleginae; Genus: Diadegma)

Angitia (Angitia) semiclausa (Hellén,1949). Lectotype in Helsinki, Finland.  Type locality: Azores.

Diadegma eucerophaga Horstmann, 1969

Diadegma xylostellae Kusigemati, 1988



Afrotropical Region: Kenya, Mauritius, Tanzania, Uganda.

Also in Indo-Australasian and Palaearctic regions.


Hosts: Plutella xylostella (Lepidoptera: Plutellidae), Exoteleia dodecella (Gelechiidae), Pieris rapae (Pieridae).


Characterized among Diadegma species by the area superomedia, apically widened and not clearly delimited, and tergites VI–VII of females at least moderately indented. (Rousse & Villemant, 2012).


Diadegma semiclausum was introduced into Mauritius in 1991 from Taiwan (Dunhawoor & Abeeluck 1998). According to Azidah et al. (2000) D. semiclausum and D. insulare are very similar, both also being differentiated by the emargination of apical tergites in females.


Azidah, A.A., Fitton, M.G. & Quicke, D.L.J. 2000. Identification of the Diadegma species (Hymenoptera: Ichneumonidae, Campopleginae) attacking the diamondback moth, Plutella xylostella (Lepidoptera: Plutellidae). Bulletin of Entomological Research, 90(5), 375–389.

Dunhawoor, C. & Abeeluck, D. 1998. Integrated control of Plutella xylostella (L.) (Lepidoptera: Yponomeutidae) in Mauritius. In N. S. Talekar (Ed), 2nd Annual Meeting of Agricultural Scientist, 12–13 Aug. 1997, Réduit, Mauritius, 1998. Food and Agricultural Research Council, pp 181–187.

Labou, B. Bordat, D. Niang, A.A. & Diarra, K. 2016. First record of the larval parasitoid Diadegma insulare (Cresson) (Hymenoptera: Ichneumonidae: Campopleginae) from Senegal. African Entomology 24: 533-535.

Rousse, P. & Villemant, C. 2012. Ichneumons in Reunion Island: a catalogue of the local Ichneumonidae (Hymenoptera) species, including 15 new taxa and a key to species. Zootaxa 3278: 1–57.


Photographs by Agnièle Touret-Alby © MNHN (specimens database http://coldb.mnhn.fr). Map illustration © Simon van Noort (Iziko Museums of South Africa).

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Web author Simon van Noort (Iziko South African Museum)


Citation: van Noort, S. 2022. WaspWeb: Hymenoptera of the Afrotropical region. URL: www.waspweb.org (accessed on <day/month/year>).

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