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ClassificationAlysiinae keys

Chaenusa seminervata van Achterberg

(Life: Kingdom: Metazoa (animals); Phylum: Arthropoda; Class: Hexapoda; Order: Hymenoptera; Superfamily: Ichneumonoidea; Family: Braconidae; Subfamily: Alysiinae; Genus: Chaenusa)

Chaenusa seminervata van Achterberg, 2012. Holotype: in South African National Collection of Insects, ARC-Plant Protection Research Institute, Pretoria (SANC). Type Locality: Lydenburg, 25°11’S 30°48’E, South Africa.


Holotype female SANC-TYPH01928 (Pretoria) ex Hydrellia lagarosiphon an aquatic leafminer on Lagarosiphon major.

Photographs and line illustration © Kees van Achterberg (Netherlands Centre for Biodiversity Naturalis, Leiden).


Holotype female SANC-TYPH01928 (Pretoria) ex Hydrellia lagarosiphon an aquatic leafminer on Lagarosiphon major.

Photographs © Simon van Noort (Iziko Museums of South Africa).


Paratype male SANC (Pretoria) ex Hydrellia lagarosiphon an aquatic leafminer on Lagarosiphon major.

Photographs © Simon van Noort (Iziko Museums of South Africa).

 

Non-type female SAM-HYM-P092801 in SAMC ex Hydrellia egeriae an aquatic leafminer on Egeria densa.

Photographs © Simon van Noort (Iziko Museums of South Africa).

Vein 1-SR+M is missing on the left forewing of this specimen, whereas it is present on the right forewing. This loss is a genetic abnormality that may potentially confuse identification with C. anervata.

 


Non-type male SAM-HYM-P092802 in SAMC ex Hydrellia egeriae an aquatic leafminer on Egeria densa.

Photographs © Simon van Noort (Iziko Museums of South Africa).


Biology

Aquatic parasitoid of Hydrellia lagarosiphonae (Diptera: Ephydridae), an aquatic leafminer on Lagarosiphon major (Hydrocharitaceae) (Coetzee et al. 2011; van Achterberg & Prinsloo, 2012) and of Hydrellia egeriae (Diptera: Ephydridae), an aquatic leafminer on Egeria densa (Hydrocharitaceae) (van Noort et al. in press).

Distribution

South Africa.

References

Coetzee, J.A., Bownes, A. & Martin, G.D. 2011. Prospects for the biological control of submerged macrophytes in South Africa. In: Moran, V.C., Hoffmann, J.N. & Hill, M.P. (Eds) Biological Control of Invasive Alien Plants in South Africa (1992–2010). 469–487. African Entomology (Special Issue) 19(2).

van Achterberg, C. & Prinsloo, G.L. 2012. Braconidae (Hymenoptera: Opiinae, Alysiinae) reared from aquatic leaf-mining Diptera on Lagarosiphon major (Hydrocharitaceae) in South Africa. African Entomology 20: 124–133.

van Noort S, Smith R, Coetzee JA. 2021. Identity of parasitoid wasps (Hymenoptera: Braconidae and Eulophidae) reared from aquatic leaf-mining flies (Diptera: Ephydridae) on invasive Brazilian waterweed Egeria densa in South Africa. African Invertebrates 62: 287–314. https://doi.org/10.3897/afrinvertebr.62.62842

Credits

Photographs and line illustration © Kees van Achterberg (Netherlands Centre for Biodiversity Naturalis, Leiden), or photographs © Simon van Noort (Iziko Museums of South Africa).

Map Illustration © Simon van Noort (Iziko Museums of South Africa).


Web author Simon van Noort (Iziko South African Museum)

 

Citation: van Noort, S. 2024. WaspWeb: Hymenoptera of the World. URL: www.waspweb.org (accessed on <day/month/year>).

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