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1 March 2014 First Report of Chrysopodes (Chrysopodes) Lineafrons (Neuroptera: Chrysopidae) in Tucumán Province, Northwestern Argentina
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The Chrysopidae family (Insecta: Neuroptera) comprises species commonly known as “lacewings” or “chrysopids” and includes at least 1,200 species distributed worldwide, with 75 genera and 11 subgenera (Brooks & Barnard 1990). The importance of this family is determined by its wide geographical distribution, the large number of specimens described, the massive breeding facilities, its ecological plasticity, and mainly because chrysopids are considered important natural enemies of aphids, whiteflies, thrips, lepidopterans and mites (Canard et al. 1984; Núñez 1989; Brooks & Barnard 1990; Freitas & Fernández 1996; McEwen et al. 2001).

The Chrysopodes genus (Neuroptera: Chrysopidae) was first described by Navás (1913) on the basis of external adult features. Subsequent researchers described 30 additional species, recognizing differences in the genitalia, and dividing the genus into the Chrysopodes subgenus with sickle-shaped mandibles and the Neosuarius subgenus with broadly-tipped mandibles (Banks 1945; Adams & Penny 1985; Brooks & Barnard 1990). Later, other species of the Chrysopodes subgenus were described (Penny 1998, 2001, 2002; Freitas & Penny 2001; Tauber et al. 2012), and the Neosuarius subgenus was revised (Tauber 2010).

The genus Chrysopodes Navás comprises at least 47 Neotropical species commonly found in disturbed habitats, most often in orchards and plantations. One species was reported from the USA (Tauber 2003; Tauber & Flint 2010), and an increase in the number of species were recorded to Mexico, Central America and South America (Adams & Penny 1987; Tauber et al. 2012). In Argentina, Chrysopodes (Chrysopodes) lineafrons Adams & Penny, Chrysopodes (Chrysopodes) polygonicus Adams & Penny, Chrysopodes (Neosuariuss) divisus Walker, Chrysopodes (Neosuarius) porterinus Navás (Adams & Penny 1987; González Olazo et al. 1999; Monserrat & Freitas 2005; González Olazo & Reguilón 2008) have been reported, being the latter species cited to Jujuy (Parque Nacional Calilegua) and Corrientes (Bella vista) Provinces.

In the present study, we compared the specimens collected in Tucumán Province with the specimens deposited in the entomological collection at Instituto-Fundación Miguel Lillo (IMLA). The specimens were confirmed as C. (C.) lineafrons Adams & Penny. The new record extends the known geographical distribution of the species to the southwest by approximately 500 km, and this is the first report of this species in Tucumán Province. Also novel is the association of C. (C.) lineafrons with tomato crops in Argentina.

We collected Chrysopodes specimens during a survey focused on the whitefly Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) in tomato (Solanum lycopersicum L.; Solanales: Solanceae) crops under greenhouse from Jan to Feb 2010 in Lules Department, Tucumán Province (Fig. 1). Adult specimens were collected with manual aspirators and the immature stages were collected manually with a brush, both within the canopies of tomato plants and within surrounding vegetation. Subsequently, adult specimens were taken to the laboratory and placed in 500 cc plastic containers covered with voile, while the immature stages were placed in petri dishes with paper accordions and eggs of Sitotroga cerealella Olivier (Lepidoptera: Gelechiidae) for feeding. The identification of immature and adult specimens (Fig. 2) was carried out by Dr. Carmen Reguilón and Mr. Federico Heredia (Fundación Miguel Lillo, Tucumán), and deposited in the entomological collection at Instituto-Fundación Miguel Lillo (IMLA).

Thus the material collected and the locality are recorded as follows: Chrysopodes (Chrysopodes) lineafrons Adams & Penny: ARGENTINA: Tucumán: Lules Department (S 26° 55′ 60″ W 65° 20′ 60″, 382 m asl), I-2010; 1female, immature stages 3L2 and 3L3, northwestern Argentina.

It is noteworthy that Chrysopodes (C.) lineafrons was reared continuously for approximately 12 months; and they were fed the eggs of B. tabaci (blank test) and of S. cerealella (control test) to evaluate the efficiency of predation. We concluded that Chrysopodes (Chrysopodes) lineafronsis an effective natural control of B. tabaci whiteflies in the tomato crops (Ortega et al. 2012).

Fig. 1.

Geographical location of the tomato crops and the sites where Chrysopodes (C.) lineafrons were collected in Tucumán Province, northwestern Argentina.

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Fig. 2.

Specimens of Chrysopodes (C.) lineafrons collected in Tucumán Province: A, third instar larva; b, adult female.

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Summary

Chrysopodes (Chrysopodes) lineafrons Adams & Penny is reported the first time from the Tucumán Province, extending its known geographical distribution range to northwestern Argentina.

Key Words: Chrysopodes (Chrysopodes) lineafrons, Bemisia tabaci, biocontrol agent, Sitotroga Cerealella

Resumen

Chrysopodes (Chrysopodes) lineafrons Adams & Penny es reportado por primera vez para la Provincia de Tucumán, extendiendo su rango de distribución geográfico para el noroeste de la Argentina.

Palabras Clave: Chrysopodes (Chrysopodes) lineafrons, Bemisia tabaci, agente de biocontrol, Sitotroga cerealella

Acknowledgments

We thank to the EEOC, Las Talitas-Tucumán by the collaboration during the field work. We also thank Dr. María Julia Dantur Juri, Instituto Superior de Entomología, for their critical review, and a special thanks to the anonymous reviewer for their comments and important contribution to the manuscript.

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Eugenia S. Ortega, Cecilia A. Veggiani Aybar, Ana L. Avila, José F. Heredia, and Carmen Reguilón "First Report of Chrysopodes (Chrysopodes) Lineafrons (Neuroptera: Chrysopidae) in Tucumán Province, Northwestern Argentina," Florida Entomologist 97(1), 266-268, (1 March 2014). https://doi.org/10.1653/024.097.0136
Published: 1 March 2014
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