Spinelli et al. (2023) in their catalogue of Argentinian species of Ceratopogonidae, recorded 30 species of the genus Atrichopogon Kieffer (Diptera: Ceratopogonidae). The purpose of this note is to provide corologic information from different surveys of Ceratopogonidae in the province of Misiones. During the fieldworks several species were collected, three of them that are currently in the subgenus Atrichopogon (Atrichopogon) Kieffer sensu stricto and were not previously found in Argentina. These species were described by Macfie from Brazil and Trinidad and their types were deposited in the Natural History Museum, London (BMNH) in the early 20^th century. They have not been recorded for more than 70 years.

The studied specimens were slide-mounted in Canada balsam and deposited in the collection of the División Entomología, Museo de La Plata (MLPA). The type material from BMNH was revised through photographs. For each species, diagnostic characters are provided and illustrated. In addition, a map with the new records is included. Finally, in 2022 Marino and collegues described a new species of Atrichopogon from Buenos Aires province, Argentina, whose specific name was preoccupied. We propose a substitute name for this junior homonym: Atrichopogon (A.)rufus, new name for AtrichopogonrufiventrisMarino & Rossi, 2022 (preocc. Kieffer, 1917).

Atrichopogon (Atrichopogon) adamsoni Macfie

(Fig. 1a-c)

Atrichopogon adamsoni Macfie 1937: 4 (female, Trinidad); Macfie, 1938: 162 (Trinidad); Macfie, 1949: 112 (male, Mexico); Borkent & Dominiak, 2020: 57 (in World catalog).

Atrichopogon (Atrichopogon) adamsoniBorkent & Spinelli, 2007: 44 (in Neotropical catalog).

Diagnostic characters. Small species, uniformly pale except scutum brown; females with humeral areas paler (Fig. 1a); male and female with tarsal ratio about 1.00

(Fig. 1b); ventral portion of aedeagal-parameral complex with a posterior pointed tip (Fig. 1c).

Types. Two syntypes female labeled: “Trinidad, St. Augustine, 2.I.1936, coll. by A. M. Adamson” (BMNH).

Distribution. Mexico (Chiapas) and Trinidad (St. Augustine).

New Records. Argentina, Misiones, Parque Provincial Moconá, sendero a la gruta, 27°54'S 53°09'W, 20-21.III.2011, 2 males, 2 females, Cazorla C., Malaise trap; same data except: camino junto al mirador, 1 male, 2 females, Cazorla C., sweep net (MLPA) (Fig. 2).

Atrichopogon (Atrichopogon) costalis Macfie

(Figs. 1d-f, 3)

Atrichopogon costalisMacfie 1939: 179 (female, Brazil); Borkent & Dominiak, 2020: 59 (in World catalog).

Atrichopogon (Atrichopogon) costalis: Borkent & Spinelli 2007: 45 (in Neotropical catalog); Santarém & Felippe-Bauer, 2023: 39 (in Brazilian catalog).

Diagnostic characters. Large orange-brown species (Fig. 3); scutum brown with prescutellar depression and anterior medial triangle dark brown (Fig. 1d); costal ratio near 0.8 (costa long), numerous macrotrichiae in cells r₃,

m₁ and m₂, scarce in cells cua₁ and anal (Fig. 1e); spermatheca large (Fig. 1f). Male unknown.

Types. Holotype female labeled: “Brazilien Nova Teutonia 27º 11´B 52º 23´L Fritz Plaumann”

Distribution. Brazil (Santa Catarina).

New Records. Argentina, Misiones, Parque Nacional Iguazú, 25°40'24.8"S 54°26'55.4"W, 10.X.2023, 2 females, Cazorla C., Chiramberro A., Hellmuth, T., Pereyra M. & Rossi J., sweep net, MLPA; same data except Parque Provincial Guardaparque H. Foerster, Andresito, 21.X.2018, 1 female alive, photographed by Javier Chiavone (Figs. 2, 3).

Remarks. Macfie (1939) briefly described the scutum as showing “traces of usual adornment”. He did not mention the characteristic pattern of pigmentation that we observed in the studied material.

Distribution. Brazil (Santa Catarina).

Atrichopogon (Atrichopogon) flavicaudae Macfie

(Fig. 1g-h)

Atrichopogon flavicaudaeMacfie 1939: 181 (female, Brazil); Borkent & Dominiak, 2020: 60 (in World catalog).

Atrichopogon (Atrichopogon) flavicaudae: Borkent & Spinelli 2007: 45 (in Neotropical catalog); Santarém & Felippe-Bauer, 2023: 40 (in Brazilian catalog).

Atrichopogon pilosior Macfie 1939: 182 (as variety of Atrichopogon flavicaudae).

Diagnostic characters. Small species with hind tibial spur long, thick and dark (Fig. 1g); abdomen pale brown, abdominal tergites 2-6 dark brown (Fig. 1h). Male unknown.

Types. Holotype female labeled: “Brazilien Nova Teutonia 27º 11´B 52º 23´L Fritz Plaumann”

New Records. Argentina, Misiones, Parque Nacional Iguazú, 25°41'08.0"S, 54°27'34.9"W, 13.X.2023, 3 females, Cazorla C., Chiramberro A., Hellmuth, T., Pereyra M. & Rossi J., sweep net; same data except: 25°40’40”S 54°27’07”W 180 m, 1.V.2023, 1 female, Delfino Ahumada H., Pereyra M., Rossi J. & Rozas Sia M., same data except Parque Provincial Moconá, sendero a la gruta, 27°54'S 53°09'W, 20-21.III.2011, 1 female, Cazorla C., Malaise trap; same data except camino junto al mirador, 1 female, Cazorla C., sweep net (MLPA) (Fig. 2).

Atrichopogon (Atrichopogon) rufus Marino & Rossi, nomen novum

Objective replacement name for Atrichopogon (Atrichopogon) rufiventris Marino & Rossi in Marino et al., 2022: 579 (male, female; Argentina), junior primary homonym of Atrichopogonrufiventris Kieffer, 1917: 184 (female; Australia; described as variety of Atrichopogon atratus Kieffer).

Etymology. The new specific name refers to the reddish-brown coloration of the abdominal segments observed in freshly collected specimens.

Acknowledgments

This work was supported by Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). We gratefully acknowledge Dr. Art Borkent who noticed this homonymy; Lic. Eduardo Lestani for his support and helpful in the fieldwork, and Administración de Parques Nacionales for allowing us permission to collect for our research. Javier Chiavone kindly shared his photo of Atrichopogon costalis with us.

REFERENCES

Borkent, A., & Dominiak, P. (2020) Catalog of the Biting Midges of the World (Diptera: Ceratopogonidae). Zootaxa, 4787, 1-377. https://doi.org/10.11646/zootaxa.4787.1.1

Borkent, A., & Spinelli, G.R. (2007) Neotropical Ceratopogonidae (Diptera: Insecta). Aquatic Biodiversity in Latin America (ABLA). Vol. 4 (ed. Adis, J., Arias, J.R., Rueda-Delgado, G., & Wantzen , K.M.), pp. 1-198. Pensoft, Sofia-Moscow.

Kieffer, J.J. (1917) Chironomides d’Australie conservés au Musée National Hongrois de Budapest. Annales Historico-Naturales Musei Nationalis Hungarici, 15, 175-228.

Macfie, J.W.S. (1937) I. - Ceratopogonidæ from Trinidad. Annals and Magazine of Natural History, 20, 1-18. https://doi.org/10.1080/00222933708655311

Macfie, J.W.S. (1938) Notes on Ceratopogonidae (Diptera). Proceedings of the Royal Entomological Society of London. Series B, Taxonomy, 7, 157-166. https://doi.org/10.1111/j.1365-3113.1938.tb01271.x

Macfie, J.W.S. (1939) A report on a collection of Brazilian Ceratopogonidae (Dipt.). Revista de Entomología, 10, 137-219.

Macfie, J.W.S. (1949) Notes on Ceratopogonidae. Proceedings of the Royal Entomological Society of London. Series B, Taxonomy, 18, 109-115. https://doi.org/10.1111/j.1365-3113.1949.tb01431.x

Marino, P.I., Rossi, J.F., & Cazorla, C.G. (2022) A new species of Atrichopogon (Atrichopogon) Kieffer (Diptera: Ceratopogonidae), redescription and first record from Argentina of Atrichopogon (A.) eucnemus and Atrichopogon (A.) woodfordi by Macfie. Zootaxa, 5188, 574-586.

Santarém, M.C.A., & Felippe-Bauer, M.L. (2023) Brazilian species of Biting Midges (Diptera: Ceratopogonidae). FIOCRUZ, Río de Janeiro.

Spinelli, G.R., Ronderos, M.M., Ayala, M.M., & Diaz, F. (2023) Catalog of the biting midges of Argentina (Diptera: Ceratopogonidae). Zootaxa, 5261, 1-83. https://doi.org/10.11646/zootaxa.5261.1.1

Notas de autor

jfrossi@fcnym.unlp.edu.ar

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