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Diadegma semiclausum

Diamondback-Moth Wasp

Multimedia & Additional Resources

Type	Description	Download
Image:	Adult (NZAC specimen)	63KB

General Information

COMMON NAMES: Diamondback-Moth Wasp; German Schlupfwespen

GLOBAL DISTRIBUTION: NATIVE Europe

COOK ISLANDS STATUS: Introduced - Recent, ?Naturalised; Land, parasite on garden pest

SIGNIFICANCE LIST: Biocontrol - released 1974

KEY FEATURES: Very small slender wasp to 4mmBL. HEAD black with large eyes, antennae 3mm. THORAX robust, black. WINGS both clear with brown triangular sector mid-anterior edge, veins brown. ABDOMEN anterior slender and arched, posterior bulbous. LEGS yellowish, with dark brown areas on hindlegs.

Enlarged Image of 'Diadegma semiclausum'

Cook Islands Distribution

View Distribution Map

Southern Group: Present Makatea:
RR	MG	AT	MK	MT	AK	PL	TK	MN
P?

Northern Group:
TN	MH	RK	PK	NS	SW

Key to Symbols

blank	no data
-	absent	L	localised
X	extinct 'naturally'	W	widespread
XQi	quarantine intercepted	R	recent
XQe	eradicated	?	query preceding category
P	present	T?	taxonomic query
S	seasonal	nn	present, said to have no name
O	occasional	?1	present, name not investigated
++++	very common	?2	presence not verified, no name recorded
+++	common	N/A	absent, name not expected
++	uncommon
+	rare
Cook Islands islands: RR =Rarotonga, MG = Mangaia, AT =‘Ātiu, MK=Ma‘uke, MT=Miti‘āro, AK=Aitutaki, PL=Palmerston, PN=Penrhyn, MN=Manuae, TK=Takūtea, TN=Tongareva (TS=Tongaleva Spoken, TW=Tongareva Written, they say "el" but write "r"), MH=Manihiki, RK=Rakahanga, PK=Pukapuka, NS=Nassau, SW=Suwarrow. After a Polynesian name: ^=orthography query. Countries and other: FIJ=Fiji, WT=Wallis & Futuna, SAM=Samoa, TON=Tonga, NIU=Niue, CK=Cook Islands, CKM=Cook Islands Māori, FP=French Polynesia, AUS=Australs, SOC=Societies, TAH=Tahiti, TUA=Tuamotus, MQS=Marquesas, MNG=Mangareva, PIT=Pitcain group, EAS=Easter Island, HAW=Hawai‘i, NZ=New Zealand, NZM=New Zealand Māori

Scientific Taxonomy

Diadegma semiclausum (Hellen)
SYNONYMS: Diadegma cerophagus (Gravenhorst); Angitia cerophaga (Gravenhorst); Angitia semiclausa (Hellen); Diadegma eucerophaga Horstmann

TAXONOMY: ANIMALIA; ARTHROPODA; ATELOCERATA; HEXAPODA; INSECTA; PTERYGOTA; Hymenoptera; Apocrita; Parasitica; Ichneumonoidea; ICHNEUMONIDAE

More Information

SIGNIFICANCE NOTES -
POSITIVE SIGNIFICANCE: Biocontrol - released 1974. Comments: Parasitic on Diamondback Moth (Plutella xylostella). Origin New Zealand, liberated Rarotonga 1974-1975. Not known to be established. (Walker & Deitz 1979)

GENERAL NOTE: Host Diamondback Moth (Plutella xylostella [HYPONOMEUTIDAE]). Introduced to NZ from England in 1936.

Vouchers & References

Vouchers:
Rarotonga: UN-SPEC79;

References:
Special Reference: W&D79

Data Update History (information):
zTX, zB02, zupB03b, zM04a, zD03b

Web Resources

Citation Information

McCormack, Gerald (2007) Cook Islands Biodiversity Database, Version 2007.2. Cook Islands Natural Heritage Trust, Rarotonga. Online at http://cookislands.bishopmuseum.org.
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