Afrotropical Region: Reunion,
Also in North and
Central America, Cuba, Jamaica, Colombia, Venezuela, Morocco, Israel,
Tahiti, Hawaii, Society Islands.
xylostella, P. operculella, P. omissa, P. armoraciae
(Lepidoptera: Plutellidae) and Hellula undalis (Lepidoptera:
Characterized among Diadegma species by the area
superomedia, apically narrowed and delimited, and the tergites VI-VII of
females not to slightly indented (Rousse & Villemant, 2012).
The presence of D. insulare in Reunion surprised
Rousse & Villemant (2012) who instead expected to find D. semiclausum,
which was introduced into Mauritius in 1991 from Taiwan (Dunhawoor &
Abeeluck 1998). However, all 12 specimens they examined have an area
superomedia distinctly narrowed posteriorly (for most of them the area
is even distinctly apically closed). This character is the most reliable
to differentiate D. insulare from its close relatives D.
semiclausum and D. mollipla. 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. None of the females examined by Rousse & Villemant
bore a distinct indentation on the apical tergite (Rousse & Villemant,
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),
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.
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
Map illustration ©
Simon van Noort (Iziko Museums of South Africa).