Lymaenon, Walker, 1846

Huber, John T., Read, Jennifer D. & Triapitsyn, Serguei V., 2020, Illustrated key to genera and catalogue of Mymaridae (Hymenoptera) in America north of Mexico, Zootaxa 4773 (3), pp. 1-411 : 216

publication ID

https://doi.org/ 10.11646/zootaxa.4773.1.1

publication LSID

lsid:zoobank.org:pub:B1D8D67C-4FDC-477E-872F-E8BCD4D027FB

DOI

https://doi.org/10.5281/zenodo.3844784

persistent identifier

https://treatment.plazi.org/id/038A0765-FF01-B9A7-48D5-FF3088BEFB35

treatment provided by

Plazi

scientific name

Lymaenon
status

 

LYMAENON Walker, 1846 View in CoL

( Figs 545–560 View FIGURE 545 View FIGURES 546–550 View FIGURES 551, 552 View FIGURES 553, 554 View FIGURES 555–557 View FIGURES 558–560 )

Lymaenon Walker, 1846: 49 View in CoL . Type species: Lymaenon acuminatus Walker, 1846 , by subsequent designation by Gahan & Fagan, 1923: 82.

Rachistus Foerster, 1847: 203 View in CoL . Type species: Ooctonus litoralis Haliday, 1833 View in CoL , by subsequent designation by Gahan & Fagan, 1923: 128. De facto synonymy under Lymaenon by Huber, 2015: 41.

Rhachistus View in CoL [sic]: Dalla Torre, 1898: 429. Unjustified emendation.

Oophilus Enock, 1909: 458 View in CoL . Type species: Oophilus longicauda Enock, 1909 , by monotypy. De facto synonymy under Lymaenon by Huber, 2015a: 41.

Agonatocerus Girault, 1913 View in CoL [149]: 276. Type species: Agonatocerus humboldti Girault, 1913 , by original designation. De facto synonymy under Lymaenon by Huber, 2015a: 41.

Gonatocerus (Gonatoceroides) Girault, 1913 [155]: 255. Type species: Gonatocerus australicus Girault, 1913 , by original designation. De facto synonymy under Lymaenon by Huber, 2015: 41.

Decarthrius Debauche, 1949: 21 View in CoL . Type species: Decarthrius straeleni Debauche, 1949 , by original designation. De facto synonymy under Lymaenon by Huber, 2015a: 41.

Diagnosis. Body length 560–1770 μm. Ocellar triangle with 3 or, rarely, 4 setae between lateral ocelli ( Fig. 547 View FIGURES 546–550 ); pronotal lobes separated by a membranous gap ( Fig. 551 View FIGURES 551, 552 ); mesothoracic spiracle much larger than propodeal spiracle ( Fig. 552 View FIGURES 551, 552 ); dorsellum strap-like, with anterior and posterior margins parallel ( Figs 551, 552 View FIGURES 551, 552 ); stigmal vein with apex truncate ( Fig. 554 View FIGURES 553, 554 ); propodeum with parallel or slightly converging submedian lines, often with spicules between them ( Fig. 551 View FIGURES 551, 552 ).

Discussion. Among the four genera in the Nearctic ( Cosmocomoidea , Gastrogonatocerus, Gonatocerus , and Lymaenon ) that share the following combination of features: tarsi 5-segmented, funicle 8-segmented, face with subantennal sulci, and parastigma with hypochaeta about midway between proximal and distal macrochaetae ( Huber 2015a), Lymaenon is superficially most similar to Gonatocerus because of its relatively narrow fore wing usually uniformly covered with microtrichia from base of parastigma to wing apex but sometimes with a clear area between parastigma + stigma and cubital line of microtrichia ( Fig. 554 View FIGURES 553, 554 ); otherwise it differs especially in mesosomal structure.

Nearctic hosts. Hemiptera : Cicadellidae , Membracidae .

Important references. Triapitsyn (2013a), Triapitsyn (2013b), and Triapitsyn et al. (2010) treated Palaearctic, Nearctic and Neotropical species, respectively.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Mymaridae

Loc

Lymaenon

Huber, John T., Read, Jennifer D. & Triapitsyn, Serguei V. 2020
2020
Loc

Agonatocerus

Huber, J. T. 2015: 41
2015
Loc

Decarthrius

Huber, J. T. 2015: 41
Debauche, H. R. 1949: 21
1949
Loc

Oophilus

Huber, J. T. 2015: 41
Enock, F. 1909: 458
1909
Loc

Rhachistus

Dalla Torre, C. G. de 1898: 429
1898
Loc

Rachistus

Gahan, A. B. & Fagan, M. M. 1923: 128
Foerster, A. 1847: 203
1847
Loc

Lymaenon

Gahan, A. B. & Fagan, M. M. 1923: 82
Walker, F. 1846: 49
1846
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