Review of Gonatocerus (Hymenoptera: Mymaridae) in the Palaearctic region, with notes on extralimital distributions Author Triapitsyn, Serguei V. text Zootaxa 2013 2013-04-30 3644 1 1 178 journal article 10.11646/zootaxa.3644.1.1 46076017-5205-4e69-bcb4-801c3ebfa8c3 1175-5326 246888 DF42B735-9A47-48D5-B382-F6A980563914 Gonatocerus ( Lymaenon ) acuminatus ( Walker, 1846 ) ( Figs 50–57 ) 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 ). FIGURES 53, 54. Gonatocerus ( Lymaenon ) acuminatus Ƥ (53—Richmond Park, England; 54—Chobham Common, England): 53, mesosoma and metasoma; 54, wings. FIGURES 55–57. Gonatocerus ( Lymaenon ) acuminatus 3 (Richmond Park, England): 55, antenna; 56, fore wing; 57, genitalia. 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 ). Antenna ( Fig. 51 ) 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 ). Propodeum ( Fig. 52 ) with submedian lines wide apart. Fore wing ( Fig. 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 ) 15–19 × as long as wide; disc almost hyaline, unevenly setose; longest marginal seta 1.9– 2.4 × maximum wing width. Metasoma ( Fig. 53 ) 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 , scape with cross-ridges. Fore wing ( Fig. 56 ) 2.5–2.7 × as long as wide. Genitalia as in Fig. 57 . Diagnosis. Gonatocerus acuminatus is recognized by the following combination of features: antenna in female ( Fig. 51 ) 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 , 56 ), and the ovipositor 2.8 –3.0× length of mesotibia. Hosts. Unknown.