A new species of the mymarid wasp genus Anagrus Haliday is described from the Province of Tucumán, Argentina. The type series of A. Anagrus miriamae, S. Triapitsyn and Virla sp. nov. was reared from eggs of the planthopper Delphacodes sitarea Remes Lenicov and Tesón on a common pasture and lawn grass, Stenotaphrum secundatum (Walter) Kuntze. Both the parasitoid and its host are widely distributed in Argentina. Anagrus Haliday is described from the Province of Tucumán, Argentina. The type series of A.(Anagrus) miriamae S. Triapitsyn and Virla sp. nov. was reared from eggs of the planthopper Delphacodes sitarea Remes Lenicov and Tesón on a common pasture and lawn grass, Stenotaphrum secundatum (Walter) Kuntze. Both the parasitoid and its host are widely distributed in Argentina.Fil: Triapitsyn, Serguei. University of California; Estados UnidosFil: Virla, Eduardo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentin

Triapitsyn, Serguei

Virla, Eduardo Gabriel

Florida Entomologist

English

CONICET Digital

 Scientific   Notes 383 A NEW  ANAGRUS  (HYMENOPTERA: MYMARIDAE) FROM ARGENTINA,AN EGG PARASITOID OF  DELPHACODES SITAREA (HEMIPTERA: ARCHAEORRHYNCHA: DELPHACIDAE) S ERGUEI  V. T RIAPITSYN 1  AND  E DUARDO  G. V IRLA 21 Entomology Research Museum, Department of Entomology, University of California, Riverside, CA 92521, USA 2 CONICET, PROIMI—Biotecnología (Biological Control Division)Av. Belgrano y Pje. Caseros (4000), San Miguel de Tucumán, Tucumán, Argentina In a review of the Argentine species of thefairyfly genus  Anagrus  Haliday (Hymenoptera:Mymaridae), Triapitsyn (2000) keyed, diagnosed,and illustrated an unnamed species (called  A.  sp.E) from Buenos Aires, Misiones, Neuquén, andSantiago del Estero Provinces of Argentina. Itwas not described as new then because all thespecimens were improperly slide-mounted andhad no host association data. Recently, the juniorauthor reared a large series of individuals of Anagrus  near San Miguel de Tucumán from eggsof the planthopper  Delphacodes sitarea  RemesLenicov and Tesón (Hemiptera: Archaeorrhyn-cha: Delphacidae) laid in pasture or lawn grass, Stenotaphrum secundatum  (Walter) Kuntze(Poaceae). These specimens were sent for identifi-cation to the senior author, who found them to beconspecific with  A.  sp. E of Triapitsyn (2000).Availability of fresh, reared specimens of this spe-cies has enabled us to describe it herein as  A. ( Anagrus )  miriamae  sp. nov.Terms for morphological features are those ofGibson (1997). Measurements are given in mi-crometers (µm) as length or, where appropriate,as length/width. Abbreviations (codens) for depos-itories of specimens are as follows: CNCI, Cana-dian National Collection of Insects, Ottawa,Ontario, Canada; IEFA, E. Chiappini collection,Istituto di Entomologia e Patologia Vegetale, Uni-versità Cattolica del Sacro Cuore, Piacenza, Italy;IMLA, Fundación e Instituto Miguel Lillo, SanMiguel de Tucumán, Tucumán, Argentina;MLPA, Museo de La Plata, La Plata, Argentina;UCRC, Entomology Research Museum, Univer-sity of California, Riverside, California, USA. Anabbreviation used in the text is: F = funicle (in fe-males) or flagellar (in males) antennal segment. Anagrus  ( Anagrus )  miriamae  S. Triapitsyn and Virla,  sp. nov. (Figs. 1, 2) Anagrus  ( Anagrus ) sp. E; Triapitsyn, 2000: 220-221. Types. Holotype female [IMLA] on slide, la-beled: 1. “ARGENTINA: Tucumán, Las Talitas,ix.1999, E. Virla. Ex. eggs of  Delphacodes sitarea .Mounted by V. Berezovskiy 2000 Canada bal-sam”; 2. “ Anagrus  ( Anagrus )  miriamae  S. Tri-apitsyn & Virla HOLOTYPE   ”. Paratypes: 25females and 3 males on cards or points [CNCI,IEFA, IMLA, MLPA, UCRC] and 2 females and 2males on slides [IMLA, UCRC], all same data asthe holotype. Other material from Argentina,stored in MLPA (Triapitsyn 2000), is not includedin the type series because those slide-mountedspecimens are in poor condition. Description (holotype and paratypes,  n  = 3).  Female:   Color. Body and appendages more orless uniformly light brown to brown except scape,pedicel, and F1 pale; eye and ocelli pink. Head alittle wider than mesosoma. Antenna (Fig. 1)much shorter than body. Scape 2.9-3.0  ×  as long aswide; pedicel much longer than F1; all funicle seg-ments longer than wide, F1 shortest and F2 long-est, F3-F6 subequal in length, longitudinalsensilla on F3 (1), F4 (1), F5 (usually 2, as in ho-lotype, but sometimes 1), F6 (2); clava about 3.5  ×Figure 1. Anagrus (Anagrus) miriamae S. Triapitsyn and Virla, sp. nov., antenna, female (holotype). Scale bar= 0.1 mm. 384 Florida Entomologist  87(3) September 2004 as long as wide (in lateral view), with 5 longitudi-nal sensilla, 3 of them subapical.Mesosoma: Mesoscutum with a pair of adno-taular setae. Forewing narrow (see Fig. 18, p. 220in Triapitsyn 2000), 8.4-9.3  ×  as long as wide; dis-tal macrochaeta 1.5-2.0  ×  length of proximal mac-rochaeta; longest marginal cilia about 3  × maximal width of blade; disc hyaline, with severalrows of microtrichia beyond venation not leavingany distinct bare area apically, only 1 such row be-hind and immediately beyond stigmal vein. Hindwing about 25  ×  as long as wide; disc hyaline, withmicrotrichia only along margins; longest mar-ginal cilia 7-8  ×  maximal width of blade.Metasoma: Gaster longer than mesosoma. Ovi-positor occupying about 4/5 length of gaster, notreaching or barely reaching tip of mesophragmaanteriorly and slightly exserted beyond apex ofgaster posteriorly (exserted part of ovipositor 1/10to 1/7 of its total length); ovipositor length/foretibia length ratio 2.5-2.9:1. External plate ofovipositor with 3 setae.Measurements (holotype): Body (length, takenbefore slide-mounting): 644; head (length, takenbefore slide-mounting): 122; mesosoma: 227;metasoma: 336; ovipositor: 315. Antenna: scape:76; pedicel: 39; F1: 20; F2: 57; F3: 52; F4: 51; F5:50; F6: 52; clava: 104. Forewing: 545/61; longestmarginal cilia: 188. Hind wing: 509/20; longestmarginal cilia: 149. Legs (given as femur, tibia,tarsus): fore: 127, 118, 166; middle: 112, 161, 161;hind: 121, 185, 173.Male: Similar to female except for normallysexually dimorphic characters such as antenna(Fig. 2) and genitalia (Fig. 3); the latter are typi-cal in shape and structure for the  incarnatus group species as discussed by Chiappini & Maz-zoni (2000). Coloration of body a little darker thanin female (dusky). Diagnosis The new taxon, which belongs to the  incarna-tus  species group of the nominate subgenus of Anagrus  as defined by Chiappini et al. (1996), ap-pears to be most closely related to the widespreadNew World species  A. flaveolus  Waterhouse, awell-known egg parasitoid of several economicallyimportant planthoppers (Triapitsyn 1997, 2002),and also to the common Palaearctic species  A. ni-Figure 2. Anagrus (Anagrus) miriamae S. Triapitsyn and Virla, sp. nov., antenna, male (paratype). Scale bar =0.1 mm.Fig. 3. Anagrus (Anagrus) miriamae S. Triapitsynand Virla, sp. nov., genitalia, male (paratype). Scalebar = 0.1 mm. Scientific   Notes 385 griceps  (Smits van Burgst). It differs from  A. flave-olus  in having a longitudinal sensillum on F3 andusually two, not one, longitudinal sensilla on F5 ofthe female antenna. The forewing of  A. miriamae sp. nov. differs from the forewing of  A. nigriceps  inhaving just one, not two, rows of microtrichia onthe blade behind and immediately beyond thestigmal vein. Females of the new species can berecognized with the key by Triapitsyn (2000). Etymology This species is named in honor of MiriamVirla, the junior author’s wife, who generouslyhelped with field work. Distribution Known from the type locality in Tucumán aswell as from several other provinces in Argentina(Triapitsyn 2000). The host planthopper is widelydistributed in Argentina where it was found inlow densities mostly on grasses and also on corn,wheat, sorghum and other commercial crops(Remes Lenicov & Tesón 1979; Remes Lenicov &Virla 1993).We thank Vladimir V. Berezovskiy (UCRC) forhelp with specimen preparation and line drawings.S UMMARY A new species of the mymarid wasp genus Anagrus  Haliday is described from the Provinceof Tucumán, Argentina. The type series of  A. ( Anagrus )  miriamae  S. Triapitsyn and Virla sp.nov. was reared from eggs of the planthopper  Del-phacodes sitarea  Remes Lenicov and Tesón on acommon pasture and lawn grass,  Stenotaphrumsecundatum  (Walter) Kuntze. Both the parasitoidand its host are widely distributed in Argentina.R EFERENCES  C ITED C HIAPPINI , E.,  AND  E. M AZZONI . 2000. Differing morphol-ogy and ultrastructure of the male copulatory appara-tus in species-groups of  Anagrus  Haliday (Hymenop-tera: Mymaridae). J. Nat. Hist. 34: 1661-1676.C HIAPPINI , E., S. V. T RIAPITSYN ,  AND  A. D ONEV . 1996.Key to the Holarctic species of  Anagrus  Haliday (Hy-menoptera: Mymaridae) with a review of the Nearcticand Palaearctic (other than European) species anddescriptions of new taxa. J. Nat. Hist. 30: 551-595.G IBSON , G. A. P. 1997. Chapter 2. Morphology and ter-minology, pp. 16-44.  In  G. A. P. Gibson, J. T. Huber,and J. B. Woolley [eds.], Annotated Keys to the Gen-era of Nearctic Chalcidoidea (Hymenoptera). NRCResearch Press, Ottawa, Ontario, Canada, 794 pp.R EMES  L ENICOV , A. M. M.  DE ,  AND  A. T ESON . 1979. Con-tribución al estudio de los fulgóridos argentinos II(Homoptera). Neotropica 25 (73): 69-76.R EMES  L ENICOV , A. M. M.  DE ,  AND  E. V IRLA . 1993.Homópteros auquenorrincos asociados al cultivo detrigo en la República Argentina. I. Análisis prelimi-nar de la importancia relativa de las especies. Stud.Neotropical Fauna Environ. 28 (4): 211-222.T RIAPITSYN , S. V. 1997. The genus  Anagrus  (Hymenop-tera: Mymaridae) in America south of the UnitedStates: a review. Ceiba 38: 1-12.T RIAPITSYN , S. V. 2000 (1999). A review of the species of Anagrus  Haliday, 1833 (Hymenoptera: Mymaridae),collected by A. A. Ogloblin in Argentina. Russian En-tomol. J. 8 (3): 213-222.T RIAPITSYN , S. V. 2002. Descriptive notes on a new andother little known species of  Anagrus  Haliday, 1833(Hymenoptera: Mymaridae) from the New Worldtropics and subtropics. Entomotropica 17: 213-223.

A new Anagrus (Hymenoptera: Mymaridae) from Argentina, an egg parasitoid of Delphacodes sitarea (Hemiptera: Archaeorrhyncha: Delphacidae)

LAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas Latinoamericanas

https://ri.conicet.gov.ar/bitstream/11336/42047/2/CONICET_Digital_Nro.6d990718-4027-4d51-8be7-15ba57276f74_A.pdf

A new Anagrus (Hymenoptera: Mymaridae) from Argentina, an egg parasitoid of Delphacodes sitarea (Hemiptera: Archaeorrhyncha: Delphacidae)

Abstract

Similar works

Full text

Available Versions

CONICET Digital

LAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas Latinoamericanas