Scoliids are characterized by possessing a strong, pilous body; eyes markedly emarginate; metasternum extended in a broad plate overlapping the posterior coxae; anterior wing ends adorned with profuse lines and fake veins; the real veins do not extend up to the wing apex (^{Argaman 1996}). As these wasps are parasitoids of Scarabaeidae (Coleoptera) larvae (^{Inoue & Endo 2006}, ^{Grissel 2007}), they are considered to be important biological controllers. The females dig the soil in search for larvae and then they sting the larva to paralize it and lay a single egg inside it (^{Abbate et al. 2018}). The family Scoliidae, which is widely distributed all over the world, currently includes four subfamilies -Campsomerinae, Colpinae, Proscoliinae, and Scoliinae- and its complex nomenclature has been subject to many changes (^{Argaman 1996}). Campsomerini is one of two tribes in the subfamily Scoliinae, with the other being Scoliini. As of this writing, the tribe Campsomerini includes the genera Campsomeris Guérin- Méneville, 1839, Pygodasis^{Bradley, 1957}, Rhabdotomeris Bradley, 1957, Stygocampsomeris Bradley, 1964, Hayderiba Argaman, 1996, and Tatusdayca Argaman, 1996.

FIGURE 1 Campsomeris servillei (Guérin-Méneville, 1831) (Hymenoptera: Scoliidae). Drawing of the dorsal view of a female. / Dibujo de la vista dorsal de una hembra. 

In Chile, this tribe is represented exclusively by Campsomeris servillei (Guérin-Méneville, 1831) (Fig. 1), a species reported only in the north of Azapa and Lluta (Arica y Parinacota) (^{Aguilera 1968}).

Due to the limited records of this wasp, we update the distribution of C. servillei with new records for northern and central Chile. All the studied specimens are deposited in the entomological collection of the Laboratorio de Entomología Ecológica of the Universidad de La Serena, Chile (LEULS, Jaime Pizarro-Araya) and the Entomology section of the National Museum of Natural History, Santiago, Chile (MNNC, Mario Elgueta). The specimens’ identification follows ^{Bradley (1945}, ¹⁹⁵⁷). Campsomeris, with Scolia atrata Fabricius, 1775, as a type species, is characterized by a recurrent second vein present (Fig. 2a) The female has the longest spur of the posterior tibia long and thin, 64 to 80% of the length of the metatarsal; vertex and dorsal area usually roughly screened; base of mid-dorsal propodeum with a fuzzy area without punctuation, bordered posteriorly by a row of firm, erect eyelashes (Figs. 2a, 2b). The male has hyaline wings or slightly tinged with yellowish brown with the entire wing membrane with setae (Figs. 2c, 2d).

The examined material was captured in the following localities: Chile: Arica and Parinacota Region: Arica. I.1929. 1♀ (MNNC). Arica. 20.I.1970. 2♂ (MNNC). Lluta. 20.I.1970. 1♀ (MNNC). Lluta Km. 7. 27.XI.1960. col. G. Díaz en alfalfa. 1♂ (MNNC). Lluta, Campex. sept 1967. col. A. Aguilera and G. Díaz. 1♀ (MNNC). Azapa Grande. VII.1966. col. G. Díaz. 1♂ (MNNC). Tarapacá Region: Dolores. 1♀ (MNNC). Tarapacá, I. Reg., V. La Frontera. III.1988. col. T. Fichet. 1♂ (MNNC). Pica. 1995. leg. M. Medina. 1♀ (MNNC). Iquique. 9.IV.1955. 1♂ (MNNC). Coquimbo Region: Maquipalli, La Serena. 2.VI.2017. col. M. González Dossi. 1♂/4♀ (LEULS). Maquipalli, La Serena, 2.VI.2017. col. J. Pizarro-Araya and F.M. Alfaro. 1♀ (LEULS). Maquipalli, La Serena. 4.I.2020. col. M. González-Dossi. 3♂ (LEULS).

The new records for the region of Coquimbo encompass the southernmost part of the species’ known distribution range for Chile. The specimens were found in agricultural plots located in the lower section of the Elqui basin (region of Coquimbo), an area formed by fluvial-marine terraces. In this area, the average annual rainfall is approximately 104 mm, being June the wettest month with 25.9 mm. The dry season lasts nine months, and the average monthly temperature stays above 10 °C throughout the year (^{Novoa & Villaseca 1989}). The area is covered with a wide variety of crops, including vegetables such as potato (Solanum tuberosum Linnaeus), and squash (Cucurbita spp.), and home garden fruits such as quince (Cydonia oblonga Miller), peach (Prunus persica L. Batsch), apple (Malus domestica Borkh), pear (Pyrus communis Linnaeus), and several citrus species.

FIGURE 2 Campsomeris servillei (Guérin-Méneville, 1831) (Hymenoptera: Scoliidae) a) Habitus dorsal view of the female; b) Habitus lateral view of the female; c) Habitus dorsal view of the male; d) Habitus lateral view of the male. / Campsomeris servillei (Guérin-Méneville, 1831) (Hymenoptera: Scoliidae) a) Habitus vista dorsal de la hembra; b) Habitus vista lateral de la hembra; c) Habitus vista dorsal del macho; d) Habitus vista lateral del macho. 

The C. servillei records reported here are widely distributed in most of northern Chile (Fig. 3), an area encompassing the biogeographical provinces of Atacama and Coquimbo, which are part of the South American transition zone and the central Chilean subregion, respectively (^{Morrone 2015}). C. servillei may also occur in the transverse valleys of the semiarid region of Chile, though there are no records of this species as of yet in Copiapó and Huasco (region of Atacama). Based on the absence of records for this species in natural dryland environments, we believe that it is unlikely that this species could survive in the dry conditions of the Atacama Desert (^{Pizarro-Araya et al. 2009}, ²⁰¹⁹, ²⁰²¹). Considering the wide distribution of this species in the neotropical region, the introduction of this wasp may be a result of the continuous flow of agricultural and horticultural products mainly from Peru (Arequipa, Moquegua, and Tacna valleys) and Arica (Azapa and Lluta valleys). It should be noted that the records for Coquimbo were located in areas near the La Palmera Farming and Fishing Terminal (La Serena, region of Coquimbo), a high commercial-flow distribution center for fruits and vegetables brought from northern Chile and southern Peru.

The genus Campsomeris is widely distributed worldwide and is more diverse in the tropics and subtropics of the Old World. In the Americas it is distributed from the United States to Argentina, though most of its species are found in South America (^{Lazell 2005}). Since all the members of this group are believed to use scarabid beetle larvae as hosts for their own larvae (^{Kurczewski 1963}), the use of paralizing venom has been discussed in several studies (^{Piek & Spanjer 1986}, ^{Piek et al. 1987}). Based on its wide distribution, this group has been used as a biological controller. One example is Campsomeris dorsata (Fabricius, 1787), a wasp endemic of South America, Central America and the West Indies that has quickly established in Florida, United States, since its introduction in 1930 (^{Abatte et al. 2018}). However, other efforts, such as the introduction of Campsomeriella collaris quadrifasciata (Lepeletier, 1845) (as Campsomeris aureicollis Lepeletier, 1935) in cane fields of Australia (^{López 1933}), have been unsuccessful. As for C. servillei, it has been used to control larvae of Podischnus agenor (Olivier, 1789) (Coleoptera: Scarabaeidae), a pest species in sugarcane fields in Venezuela (^{Narváez 2003}). Although the available biological-bionomical and ecological data for this species are limited, ^{Elliot (1990}) points out that for Campsomeris trifasciata (Fabricius, 1793), the females of the species are more frequent flower visitors compared to males. These visits may be aimed at collecting nectar to compensate for the individuals’ high energy expenditure (^{Minagi et al. 2000}, ^{Inoue & Endo 2006}).

FIGURE 3 Records of Campsomeris servillei (Guérin-Méneville, 1831) (Hymenoptera: Scoliidae) for Chile. / Registros de Campsomeris servillei (Guérin-Méneville, 1831) (Hymenoptera: Scoliidae) para Chile. 

There is no data available to assess the agricultural significance of this species in Chile. According to ^{Norambuena & Aguilera (1988}), the scarabid species that are more harmful to agriculture (prairies and cereal fields) in Chile include Hylamorpha elegans (Burmeister, 1844), Phytoloema herrmanni (Germain 1901), and Sericoides germaini Dalla Torre 1912, all of which represent significant pests between the regions of El Maule and Los Lagos. Based on the data reported in this study, C. servillei has been found to attack large scarabid species (^{Narváez 2003}). For this reason, it is necessary to study the potential predation of large species inhabiting the northernmost part of Chile, such as Golofa minutus Sternberg, 1910; Tomarus maimon Erichson, 1847; T. rostratus Dupuis, 2014, and Archophileurus chaconus (Kolbe, 1910), as well as other smaller ones such as Liogenys Guérin- Méneville, 1831 or Ligyrus villosus (Burmeister, 1847), distributed in the region of Coquimbo. More data about the biology, ecology and behavior of this species are needed to better understand its dispersion ability and wide distribution range.