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Subfamily Acaenitinae

Ichneumon sp - Spilopteron franclemonti - female

Classification

Kingdom Animalia (Animals)

Phylum Arthropoda (Arthropods)

Subphylum Hexapoda (Hexapods)

Class Insecta (Insects)

Order Hymenoptera (Ants, Bees, Wasps and Sawflies)

No Taxon ("Parasitica" - Parasitoid Wasps)

Superfamily Ichneumonoidea (Braconid and Ichneumonid Wasps)

Family Ichneumonidae (Ichneumonid Wasps)

Subfamily Acaenitinae

Numbers

18 spp.* in 5 genera in our area;(1)(2)(3) about 345 species placed in 28 genera worldwide

Acaenitini

1. Arotes (4 spp.)

2. Spilopteron (4 spp.)

3. Yezoceryx (1 sp.)

Coleocentrini

4. Coleocentrus (8 spp.)

5. Mesoclistus (1 sp.)

* Species not yet in the guide: Arotes maurus, Coleocentrus manni, C. quebecensis, C. rufocoxatus (description), Mesoclistus cushmani, & Yezoceryx rupinsulensis.

Size

5-20 mm

Identification

Female hypopygium, which is large and triangular, folded on the midline.(4)

Overview of Genera

Genera and species treated by Townes & Townes (1960).(4)

Arotes - areolet absent, forewing with crescent-shaped spot, intercubital vein conspicuously beyond (0.4-0.6x) recurrent vein, flagellum with annulus in both sexes; species primarily black-and-white or reddish

Coleocentrus - areolet present (except C. flavipes), clypeus with median tubercle, T8+T9 elongate, flagellum without annulus in either sex; black-and-orange species (reddish in C. rufus)

Mesoclistus - areolet present, clypeus lacking median tubercle, T8+T9 short, flagellum without annulus in either sex; black-and-orange species

Spilopteron - areolet absent, forewing with circular spot, intercubital vein behind or only inconspicuously beyond (≤0.15x) recurrent vein, flagellum with annulus except in male S. occiputale; species black with white, yellow, and/or reddish markings

Yezoceryx - areolet absent, forewing without spot, flagellum without annulus; fulvous species

Overview of Females

-no photo-

Arotes amoenus Arotes decorus Arotes maurus Arotes melleus

-no photo-

Coleocentrus flavipes Coleocentrus harringtoni Coleocentrus manni Coleocentrus occidentalis

-no photo- -no photo-

Coleocentrus pettiti Coleocentrus quebecensis Coleocentrus rufocoxatus Coleocentrus rufus

-no photo-

Mesoclistus cushmani

Spilopteron formosum Spilopteron franclemonti Spilopteron occiputale Spilopteron vicinum

-no photo-

Yezoceryx rupinsulensis

Overview of Males

-no photo-

Arotes amoenus Arotes decorus Arotes maurus Arotes melleus

-no photo- -no photo- -no photo- -no photo-

Coleocentrus flavipes Coleocentrus harringtoni Coleocentrus manni Coleocentrus occidentalis

-no photo- -no photo- -no photo-

Coleocentrus pettiti Coleocentrus quebecensis Coleocentrus rufocoxatus Coleocentrus rufus

-no photo-

Mesoclistus cushmani

Spilopteron formosum Spilopteron franclemonti Spilopteron occiputale Spilopteron vicinum

-no photo-

Yezoceryx rupinsulensis

Range

Worldwide(1)

Food

hosts include wood boring Coleoptera, Hymenoptera (Siricidae/Xiphydriidae) and Lepidoptera (Sesiidae). Nearctic host records include larvae of Cerambycidae, Melandryiidae and Mordellidae(2)(3)

Print References

Varga, Alexander. 2018. A review of the subfamily Acaenitinae Förster, 1869 (Hymenoptera, Ichneumonidae) from Ukrainian Carpathians. Biodiversity Data Journal, 1: e1008. DOI: 10.3897/BDJ.1.e1008

Works Cited

1.	Classification and Systematics of the Ichneumonidae

2.	Carlson R.W. () Ichneumonidae catalog

3.	Genera Ichneumonorum Nearcticae (2014)

4.	Ichneumon-Flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, and Acaenitinae Henry Townes and Marjorie Townes. 1960. Bulletin - United States National Museum, Vol. 216, Part 2, pp. 1–676.

Contributed by Eric R. Eaton on 22 February, 2006 - 5:28pm
Additional contributions by Beatriz Moisset, v belov, PaleoJon, behmrachel
Last updated 14 April, 2024 - 4:41pm

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