72 ISSN 0373-5R68ev0. RSoecv.. ESnotco. mEonl.t oAmrogle.n At. r6g4en (t3. ),6 42(030)5: 72-74, 2005 NOTA CIENTÍFICA The subgenus Stilobezzia (Eukraiohelea) in Argentina and Paraguay (Diptera: Ceratopogonidae) SPINELLI, Gustavo R. and Carla G. CAZORLA División Entomología, Museo de La Plata, Paseo del Bosque s/n, 1900 La Plata, Argentina; e-mail: [email protected] El subgénero Stilobezzia (Eukraiohelea) en la Argentina y Paraguay (Diptera: Ceratopogonidae) (cid:132)(cid:132)(cid:132)(cid:132)(cid:132) RESUMEN. Se registra por primera vez para la Argentina a Stilobezzia (Eukraiohelea) amnigena (Macfie) y a Stilobezzia (E.) elegantula (Johannsen) para la Argentina y Paraguay. Se reconoce a Stilobezzia subsessilis Kieffer como sinónimo menor de S. elegantula. PALABRAS CLAVE: Stilobezzia (Eukraiohelea). Argentina. Paraguay. Nuevos registros. Sinonimia. (cid:132)(cid:132)(cid:132)(cid:132)(cid:132) ABSTRACT. Stilobezzia (Eukraiohelea) amnigena (Macfie) is recorded for the first time from Argentina, and Stilobezzia (E.) elegantula (Johannsen) from Argentina and Paraguay. Stilobezzia subsessilis Kieffer is recognized as a junior synonym of S. elegantula. KEY WORDS: Stilobezzia (Eukraiohelea). Argentina. Paraguay. New records. Synonymy. Predaceous midges of the genus Stilobezzia and the wide gap in distribution from that of S. Kieffer are common inhabitants of aquatic elegantula, S. subsessilis was regarded as species environments but are often overlooked because of inquirenda, not as a junior synonym. their small size (1-3 mm) (Wirth & Spinelli, 1992). Borkent & Wirth (1997), in their World catalog of The purpose of this paper is to report findings Ceratopogonidae, mentioned four subgenera of of S. (E.) amnigena and S. (E.) elegantula in Stilobezzia: the cosmopolitan Acanthohelea Kieffer northeastern Argentina and/or neighbouring sites and Stilobezzia Kieffer, with more than 300 of Paraguay, significantly enlarging the distribution described species; Debenhamia Wirth and Grogan, of both species, and to propose the synonymy of known by two Australian species; and Eukraiohelea S. (E.) subsessilis under S. (E.) elegantula. Accurate Ingram and Macfie, with 14 described species from descriptions and illustrations of both species may Africa, America and southeastern Asia. be found in Wirth & Spinelli (1992). The subgenus Stilobezzia (Eukraiohelea) is Stilobezzia (Eukraiohelea) amnigena (Macfie) presently known in America by four species: S. (E.) amnigena (Macfie), distributed from southeastern Eukraiohelea amnigena Macfie, 1935: 56 (female; USA to northeastern Brazil, doubtly in Jamaica and Brazil). Puerto Rico; S.(E.) dorsofasciata (Lutz), from Rio de Stilobezzia (Eukraiohelea) amnigena: Lane & Janeiro, Brazil; S. (E.) elegantula (Johannsen), from Forattini, 1958: 203 (comb.; Jamaica); Lane & USA to Panamá, doubtly in Puerto Rico; and S. (E.) Forattini, 1961: 84 (in key); Wirth & Spinelli; subsessilis Kieffer, from Paraguay. According to its 1992: 346 (redescr.; distr.). original description, the later is very similar to S. (E.) Stilobezzia (Eukraiohelea) elegantula, in part, elegantula. However, in the revision of the New misident: Wirth, 1953: 62 (male descr.; figs.); World species of the subgenus (Wirth & Spinelli, Wirth & Grogan, 1981: 78 (male descr.; figs.). 1992), and due to the lack of material from Paraguay SPINELLI, G. and C. CAZORLA. The Subgenus Stilobezzia (Eukraiohelea) in Argentina and Paraguay 73 Distribution. U.S.A (Florida, South Carolina), ? synonym of S. (E.) elegantula. The type of S. (E.) Jamaica, ? Puerto Rico, Brazil (Maranhão), subsessilis, formerly deposited in the Musée National Argentina (Corrientes). Hongrois de Budapest, was destroyed by fire. New Records. ARGENTINA: Corrientes, Ituzaingó, 22-V-1996, G. Spinelli, CDC light trap. LITERATURE CITED Remarks. The examined male, unless damaged, clearly 1. BORKENT, A. & W. W. WIRTH. 1997. World shows typical characters of S. amnigena: tergite 9 with species of biting midges (Diptera: apicolateral processes, distal portion of parameres Ceratopogonidae). Bull. Amer. Mus. Nat. long, slender and separate from basal apodemes, and Hist. 233, 257 pp. gonostylus stout, swollen in mid portion. 2. JOHANNSEN, O. A. 1907. Some new species of Kansas Chironomidae. Kansas Univ. Stilobezzia (Eukraiohelea) elegantula Sci. Bull. 4: 109-112. (Johannsen) 3. JOHANNSEN, O. A. 1934. New species of North American Ceratopogonidae and Bezzia elegantula Johannsen, 1907: 109 (female; Chironomidae. J. N. Y. Ent. Soc. 42: 343- U.S.A., Kansas). 352. Probezzia elegantula: Malloch, 1914: 137 4. JOHANNSEN, O. A. 1943. Two new species (comb.). of American Ceratopogonidae (Diptera). Parabezzia elegantula: Malloch, 1915: 359 Ann. Ent. Soc. Amer. 36: 761-762. (comb.). 5. KIEFFER, J. J. 1917. Chironomides d’Amérique Parabezzia (Eukraiohelea) elegantula: Johannsen, conservés au Musée National 1934: 345 (notes; status). Hongrois de Budapest. Ann. Hist.-Nat. Eukraiohelea elegantula: Johannsen, 1943: 781 Mus. Nat. Hungarici 15: 175-228. (comb.). 6. LANE, J. & O. P. FORATTINI. 1956. Stilobezzia (Eukraiohelea) elegantula: Wirth, 1953: Neotropical Stilobezzia Kieffer, 1911 I. 62 (in part, female; comb.; redescr.; distr.); Wirth Nine new Panamanian species (Diptera, & Grogan, 1981: 78 (in part, female; redescr.; Nematocera, Ceratopogonidae). Rev. figs.); Wilkening et al., 1985: 525 (in part, bras. Malariol. 8: 207-226. female; Florida records); Wirth & Spinelli, 7. LANE, J. & O. P. FORATTINI. 1958. 1992: 343 (redescr.; distr.). Neotropical Stilobezzia II. Fourteen new Stilobezzia (Eukraiohelea) maculitibia: Lane & species, chiefly from Panama (Diptera, Forattini, 1956: 207 (female, male; Panama); Ceratopogonidae). Rev. bras. Entomol. Lane & Forattini, 1961: 84 (in key); Wirth & 8: 203-224. Spinelli, 1992: 344 (syn.). 8. LANE, J. & O. P. FORATTINI. 1961. Stilobezzia subsessilis Kieffer, 1917: 311 (female; Neotropical Stilobezzia, 1911 III. Key Paraguay); Lane & Forattini, 1961: 88 for the the adults of this genus and (subgeneric position); Wirth & Spinelli, 1992: description of one new species 348 (sp. inquer.). NEW SYNONYM. (Diptera, Ceratopogonidae). Rev. bras. Entomol. 10: 83-94. Distribution. U.S.A (Kansas and Louisiana to 9. MACFIE, J. W. S. 1935. Ceratopogonidae Maryland and Florida), Panamá, ? Puerto Rico, (Dipt.) from the river Amazon. Stylops Paraguay (Itapua), Argentina (Chaco, Misiones). 4: 49-56. 10. MALLOCH, J. R. 1914. Synopsis of the genus New Records. ARGENTINA: Chaco. Parque Nacional Probezzia, with description of a new El Chaco, 11/13-X-1982, G. Spinelli, 1 male, at light; species. Proc. Biol. Soc. Wash. 27: 137- Misiones: Posadas, 7-III-2001, G. Spinelli, 1 female, 140. CDC light trap; PARAGUAY. Itapua, Aguapey, 10/11- 11. MALLOCH, J. R. 1915. The Chironomidae, V-2000, A. Ortiz-D. López, 1 male, CDC light trap; or midges, of Illinois, with particular same data except 10-VIII-2000, G. Spinelli, 1 male; reference to the species occurring in same data except 1/2-XI-2001, 1 female, 1 male. the Illinois river. Bull. Ill. St. lab. Nat. Hist. 10: 275-543. Remarks. The detailed examination of the specimens 12. WILKENING, A. J., D. L. KLINE & W. W. here reported allows us to recognize that their WIRTH. 1985. An annotated checklist characters are identical to the ones used by Kieffer of the Ceratopogonidae (Diptera) of (1917) in the original description of S. (E.) subsessilis, Florida with a new synonymy. Fla. Ent. and consequently that this species is a junior 68: 511-537. 74 Rev. Soc. Entomol. Argent. 64 (3), 2005 13. WIRTH, W. W. 1953. Biting midges of the 15. WIRTH, W. W. & G. R. SPINELLI. 1992. heleid genus Stilobezzia in North American predaceous midges of the America. Proc. U. S. Nat. Mus.103: 57- subgenus Eukraiohelea of Stilobezzia 85. (Diptera: Ceratopogonidae). Fla. Ent. 14. WIRTH, W. W. & W. L. GROGAN. 1981. 75: 342-349. Natural History of Plummers Island, Maryland XXV. Biting midges (Diptera: Ceratopogonidae). 3. The species of the Recibido: 30-VI-2005 tribe Stilobezziini. Bull. Biol. Soc. Wash. Aceptado: 30-IX-2005 5: 1-102.