Gonatocerus (Lymaenon) acuminatus ( Walker, 1846 ), Walker, 1846

Triapitsyn, Serguei V., 2013, Review of Gonatocerus (Hymenoptera: Mymaridae) in the Palaearctic region, with notes on extralimital distributions, Zootaxa 3644 (1), pp. 1-178: 42-44

publication ID

http://dx.doi.org/10.11646/zootaxa.3644.1.1

publication LSID

lsid:zoobank.org:pub:DF42B735-9A47-48D5-B382-F6A980563914

DOI

http://doi.org/10.5281/zenodo.5099035

persistent identifier

http://treatment.plazi.org/id/DC2687A4-E515-FF8F-68CC-0DD11CA95C26

treatment provided by

Plazi

scientific name

Gonatocerus (Lymaenon) acuminatus ( Walker, 1846 )
status

 

Gonatocerus (Lymaenon) acuminatus ( Walker, 1846)  

( Figs 50–57 View FIGURES 50 – 52 View FIGURES 53, 54 View FIGURES 55 – 57 )

Mymar acuminatus Curtis 1829: 112   . Nom. nud. (Graham 1972: 132).

Anaphes acuminatus Curtis 1837: 134   . Nom. nud. (Graham 1972: 132).

Lymaenon acuminatus Walker 1846: 51   . Lectotype female [ MVMA] (not examined), designated by Graham 1972: 131. Type locality: unknown ( UK).

Gonatocerus acuminatus (Walker)   : Dalla Torre 1898: 429 (catalog); Graham 1972: 131–132 (discussion, lectotype designations, taxonomic history and references, synonymy); Matthews 1986: 224, 227 (diagnosis, distribution).

Oophilus longicauda Enock 1909: 458   . Lectotype female [ BMNH] (not examined), designated by Graham 1972: 131–132. Type locality: Richmond [Park], London Borough of Richmond upon Thames, England, UK. Synonymized under G. acuminatus   by Graham 1972: 132.

Gonatocerus longicauda (Enock)   : Girault 1911: 277 (record from England, UK).

Oophilus   sp.: Bakkendorf 1934: 31 (record from Denmark).

Lymaenon acuminatus (Haliday) Walker   : Debauche 1948: 81 (list); Hincks 1952: 64 (mentioned from England).

Oophilus longicauda Enock   : Kryger 1950: 79 –81 (record from Denmark, illustrations, discussion).

Lymaenon longicauda (Enock)   : Debauche 1948: 88; Viggiani 1969: 39 (member of the longicauda   species group of Lymaenon   ).

Type material examined. Paralectotype, here designated: 1 complete female [ MVMA] on F. Walker-style card without an original label, labeled later: “NATIONAL MUSEUM VICTORIA 50717 Anaphes acuminatus   Europe”. This female was not examined by Graham (1972) as it was in the different part of the MVMA collection but there is little doubt that it was one of the original syntype specimens.

Material examined. DENMARK. HOVEDSTADEN, Dyrehaven (Jaegersborg Dyrehave, Zealand Island): 30.viii. 1927, J.P. Kryger [1 3, ZMUC]; Fortunens Indelukke, O. Bakkendorf: 15.ix. 1927 [1 Ƥ, ZMUC]; 23.ix. 1927 [1 3, ZMUC]; 20.ix. 1929 [1 Ƥ, ZMUC]. GERMANY. NORTH RHINE-WESTPHALIA, Aachen [1 3, NHMW] (paralectotype of G. ater Foerster   ). UK. ENGLAND: London Borough of Richmond upon Thames: Richmond, 7.ix. 1910, C. O. Waterhouse [1 Ƥ, USNM]. Richmond Park, J.S. Noyes: 28.vii. 1995 [3 Ƥ, CNCI]; 15.viii. 1997 [4 Ƥ, 1 3, CNCI, UCRC]. Suffolk Co., Minsmere Reserve, 23.viii. 1975, J.S. Noyes [1 Ƥ, BMNH] (det. M.J. Matthews). Surrey Co.: Chobham Common, 26.viii. 1982, J.S. Noyes [1 Ƥ, BMNH] (det. M.J. Matthews). Dorking, Leith Hill, 26.viii. 1984, J.S. Noyes [1 Ƥ, BMNH] (det. M.J. Matthews). West Sussex Co., Kingley Vale National Nature Researve, 3.ix. 1981, J.S. Noyes [1 Ƥ, BMNH] (det. M.J. Matthews).

Distribution. PALAEARCTIC: Czech Republic ( Noyes 2012), Denmark, Germany *, Slovakia ( Noyes 2012), and UK ( England).

Redescription. FEMALE (paralectotype and non-type specimens). Body length 1220–1540 µm. Body dark brown to black, antenna mostly brown or dark brown, legs light to dark brown.

Face with fine sculpture particularly conspicuous between toruli ( Fig. 50 View FIGURES 50 – 52 ). Antenna ( Fig. 51 View FIGURES 50 – 52 ) with radicle 0.3–0.32 × total length of scape, rest of scape about 3.3 × as long as wide, with cross-sculpture; pedicel longer than F 1; F 1 –F 4 each shorter than following segments and F 2 –F 4 progressively a little longer than preceding funicle segment, F 5 –F 8 more or less subequal in length but F 8 a little wider than preceding funicle segments; mps usually on F 5 (1 or 2), F 6 (2 or 3), F 7 (2 or 3), and F 8 (4 or 5) [but according to Matthews (1986) their number may also vary as follows (although I did not see that in his specimens): F 6 (0–3) and F 8 (3–5)]; clava 3.2–3.5 × as long as wide, a little longer than combined length of F 7 and F 8, normally with 10 mps but sometimes with as many as 11 or 12 mps (up to? 15 mps according to Matthews (1986) but that needs verification because I counted at most 12 mps among the the four female specimens on slides at BMNH mounted very well by him).

Mesosoma ( Fig. 53 View FIGURES 53, 54 ). Propodeum ( Fig. 52 View FIGURES 50 – 52 ) with submedian lines wide apart. Fore wing ( Fig. 54 View FIGURES 53, 54 ) 2.7–2.9 × as long as wide; longest marginal seta 0.21–0.23 × maximum wing width. Fore wing disc almost hyaline, mostly bare behind submarginal vein and with rather large, distinct bare area between marginal vein and cubital row of setae. Hind wing ( Fig. 54 View FIGURES 53, 54 ) 15–19 × as long as wide; disc almost hyaline, unevenly setose; longest marginal seta 1.9– 2.4 × maximum wing width.

Metasoma ( Fig. 53 View FIGURES 53, 54 ) notably longer than mesosoma. Petiole 2–3 × as wide as long. Ovipositor occupying at least about 0.9 × length of gaster, markedly exserted beyond its apex (by about 0.2 × own length); ovipositor length: mesotibia length ratio 2.8 –3.0: 1.

Measurements of the paralectotype (µm). Body: 1220.

MALE. Body length 1200–1520 µm (slide-mounted specimens). Similar to female except for normal sexually dimorphic features and the following. Antenna as in Fig. 55 View FIGURES 55 – 57 , scape with cross-ridges. Fore wing ( Fig. 56 View FIGURES 55 – 57 ) 2.5–2.7 × as long as wide. Genitalia as in Fig. 57 View FIGURES 55 – 57 .

Diagnosis. Gonatocerus acuminatus   is recognized by the following combination of features: antenna in female ( Fig. 51 View FIGURES 50 – 52 ) with mps normally on F 5 –F 8 (F 8 usually with 4 or 5 mps), fore wing in female 2.7–2.9 × as long as wide with a rather large, distinct bare area on the disc between the marginal vein and the cubital row of setae in both sexes ( Figs 54 View FIGURES 53, 54 , 56 View FIGURES 55 – 57 ), and the ovipositor 2.8 –3.0× length of mesotibia.

Hosts. Unknown.

ZMUC

Zoological Museum, University of Copenhagen

NHMW

Naturhistorisches Museum, Wien

USNM

Smithsonian Institution, National Museum of Natural History

CNCI

Canadian National Collection Insects

UCRC

University of California, Riverside

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Mymaridae

Genus

Gonatocerus

Loc

Gonatocerus (Lymaenon) acuminatus ( Walker, 1846 )

Triapitsyn, Serguei V. 2013
2013
Loc

Oophilus longicauda

Kryger 1950: 79
1950
Loc

Lymaenon acuminatus

Hincks 1952: 64
Debauche 1948: 81
1948
Loc

Lymaenon longicauda

Viggiani 1969: 39
Debauche 1948: 88
1948
Loc

Oophilus

Bakkendorf 1934: 31
1934
Loc

Gonatocerus longicauda

Girault 1911: 277
1911
Loc

Oophilus longicauda

Enock 1909: 458
1909
Loc

Gonatocerus acuminatus

Matthews 1986: 224
Dalla 1898: 429
1898
Loc

Lymaenon acuminatus

Walker 1846: 51
1846
Loc

Anaphes acuminatus

Curtis 1837: 134
1837
Loc

Mymar acuminatus

Curtis 1829: 112
1829