Nomenclatural changes in Mymaridae (Hymenoptera: Chalcidoidea) Author Aquino, Daniel A. Author Triapitsyn, Serguei V. Author Huber, John T. text Zootaxa 2016 4205 6 581 592 journal article 37558 10.11646/zootaxa.4205.6.6 1192d7b8-b77e-41d4-a49c-955a32094f77 1175-5326 200316 BD1D8417-1BC3-4FD8-B1E1-55D9FB334C55 Polynema ( Dorypolynema ) magniceps ( Ashmead, 1900 ) ( Figs 4a–e ) Polynema magniceps Ashmead 1900 : 265 –266. Type locality: Saint Vincent and the Grenadines, Saint Vincent Island, unspecified. Polynema grenadensis Ashmead 1900 : 266 . Type locality: Grenada, Mirabeau Estate (Windward side). Syn. n. Polynema ( Dorypolynema ) gaucho Triapitsyn & Aquino 2010 : 63 –67. Holotype female [ MLPA ], examined ( Triapitsyn & Aquino 2010 ). Type locality: Argentina , Formosa , Estancia Guaycolec ( 25 km N of Formosa ), 25°59'S 58°12'W . Syn. n. Type material examined . Holotype male of P. magniceps [ BMNH ] on point labeled: 1, “ Leward side St. Vincent , W. I., H.H. Smith 200”; 2, “ Type H. T. ”; 3, “ Polynema magniceps ♂ Type Ashm ”; 4, “ B.M. Type Hym ”; 5, “1455”. Holotype female of P. grenadensis [ BMNH ] on point labeled: 1, “Mirabeau Est. (Windward side) Grenada , W. I. H. H. Smith ”; 2, “ Type H. T. ”; 3, “ W. Indies. 99-331.”; 4, “ Polynema grenadensis ♀ Type ”; 5, “B. M . TYPE HYM. 5. 1456”; 6, “NHMUK 010198633”. Additional material examined. Argentina : FORMOSA : Estancia Guaycolec , 25 km N of Formosa , 25°59'S 58°12'W , 17–20.xii. 1998 , 185 m, S.L. Heydon [1 non-type ♀ , UCRC ] . Chile : X REGIÓN, Isla Grande de Chiloé, Río Dongo , 19.i.2000 , T. Cekalovic [ 1 ♀ , UCDC ] . Diagnosis . The holotype male of Polynema ( Dorypolynema ) magniceps is characterized by the following combination of features: general body color dark brown with appendages yellowish brown except funicular segments and procoxa yellow; antennal scape with transverse striation on inner surface; pronotum divided mediolongitudinally, each lobe with 4 setae at posterior margin; mesoscutum and scutellum smooth; scutellar campaniform sensilla about in middle of scutellum; propodeum with complete median carina; fore wing hyaline, narrow, 5.2× as long as wide. Redescription . Female ( holotype of P. grenadensis ). Similar to male except for normal sexually dimorphic features: antenna with scape smooth, 1.2× longer than F2, the latter the longest funicular segment and 2.2× as long as F1; F4–F6 similar in length and width; clava a little shorter than 3 preceding segments; ovipositor strongly exserted; fore wing hyaline, about 4.2× as long as wide. Comments . Ashmead (1900) described Polynema magniceps from Saint Vincent Island based on a single male, which is in a very poor condition, so a more detailed diagnosis or redescription cannot be provided. Ashmead (1900) also described Polynema grenadensis from the neighboring island of Grenada based on a single female. We consider P. grenadensis to be a synonym of P. magniceps because the types are similar in general morphological features except for the normal sexually dimorphic ones. Polynema magniceps definitely belongs to Polynema ( Dorypolynema Hayat & Anis ) and is very similar to the widespread Neotropical species P. gaucho Triapitsyn & Aquino. The female described as P. grenadensis differs from the latter by the slightly shorter F2 relative to the length of F1 (about 2.0×), whereas in P. gaucho F2 is about 2.2× length of F1 ( Triapitsyn & Aquino 2010 ). However, it seems that this morphological character is subject to intraspecific variability in the specimens from Formosa , Argentina , which fit both these nominal species, so P. ( Dorypolynema ) gaucho is here synonymized under P. ( Dorypolynema ) magniceps . Distribution . Grenada ( Ashmead 1900, as P. grenadensis ) and Saint Vincent and the Grenadines ( Saint Vincent Island ), as well as Argentina ( Formosa ), Brazil , Costa Rica , Ecuador , Peru ( Triapitsyn & Aquino 2010, as P. ( Dorypolynema ) gaucho ), and Chile (new record).