<i>Curicta</i> Stål, 1862 (Insecta: Heteroptera: Nepidae) from Maranhão, Brazil

The genus Curicta Stål comprises aquatic insects commonly known as water scorpions and typically occurs in habitats associated with marginal mud. It is exclusively distributed in the New World, with 17 species recorded in the Neotropical Region, including 12 in Brazil. In the state of Maranhão, only one species, Curicta montei De Carlo, has been documented to date. Thus, this study aims to explore the diversity of Curicta in the state of Maranhão. A total of 124 specimens were collected, representing three species: Curicta granulosa De Carlo, C. johnpolhemi Keffer, and C. montei. Notably, C. johnpolhemi and C. granulosa are reported here as new distribution records for the state of Maranhão. Previously described based solely on a single female, our investigation of C. johnpolhemi enabled the description of the male, providing additional taxonomic insights for the species. Photographs of one specimen from each species are provided and diagnostic features are illustrated.

Keywords:
Aquatic insects; Diversity; Morphology; Nepomorpha; Water scorpions

Authorship

Francisca Barbara e Silva Barros

Universidade Estadual do Maranhão, Departamento de Química e Biologia, Laboratório de Entomologia Aquática (LEAq), Caxias, MA, Brasil.Universidade Estadual do MaranhãoBrasilCaxias, MA, BrasilUniversidade Estadual do Maranhão, Departamento de Química e Biologia, Laboratório de Entomologia Aquática (LEAq), Caxias, MA, Brasil.

Universidade Federal do Pará, Instituto de Ciências Biológicas, Programa de Pós-Graduação em Zoologia, Belém, PA, Brasil.Universidade Federal do ParáBrasilBelém, PA, BrasilUniversidade Federal do Pará, Instituto de Ciências Biológicas, Programa de Pós-Graduação em Zoologia, Belém, PA, Brasil.

https://orcid.org/0000-0002-5734-0431

Cleilton Lima Franco

Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Entomologia, Rio de Janeiro, RJ, Brasil.Fundação Oswaldo CruzBrasilRio de Janeiro, RJ, BrasilFundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Entomologia, Rio de Janeiro, RJ, Brasil.

Universidade Federal Rural do Rio de Janeiro, Programa de Pós-Graduação em Biologia Animal, Seropédica, RJ, Brasil.Universidade Federal Rural do Rio de JaneiroBrasilSeropédica, RJ, BrasilUniversidade Federal Rural do Rio de Janeiro, Programa de Pós-Graduação em Biologia Animal, Seropédica, RJ, Brasil.

https://orcid.org/0000-0003-1827-773X

Carlos Augusto Silva de Azevêdo

https://orcid.org/0000-0002-0503-3843

Fabiano Stefanello ^**Corresponding author. E-mail: stefanellof@gmail.com (F. Stefanello).

https://orcid.org/0000-0002-9622-8311

*Corresponding author. E-mail: stefanellof@gmail.com (F. Stefanello).

Associate Editor: Fabio Quinteiro

Conflicts of interest

The authors declare no conflicts of interest.

Author contribution statement

FBSB and FS: conceptualization, collection, investigation, methodology. All authors: analysis, writing – review & editing.

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (7)

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Figure 1
Typical habitats where species of Curicta Stål may be found in the state of Maranhão. A– Buriti Corrente stream (Caxias municipality); B– Ourives River (Barra do Corda municipality); C– Mearim tributary (Barra do Corda municipality); D– Pond (Caxias municipality).

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Figure 2
Female of Curicta granulosa De Carlo. A– Habitus, dorsal view; B– Dorsal view of head and pronotum; C– Lateral view of profemur; D– Profemur with profemoral groove and teeth and tubercles; E– Last abdominal segment, lateral view; F– Genitalia of female. Abbreviations: sip=siphon; car= carina; prg= pronotal groove; pro=pronotum; pti= protibia; pfe= profemur; tpg= teeth of profemoral groove; pes= parasternum; VII seg= seventh abdominal segment; gp1=gonapophysis-1; gp2=gonapophysis-2.

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Figure 3
Records of Curicta granulosa De Carlo in South America and Brazil, indicating new records in the state of Maranhão.

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Figure 4
Curicta johnpolhemi Keffer female (holotype) and male. A– habitus of female, dorsal view; B– habitus of male, dorsal view; C– dorsal view of head and pronotum; D– lateral view of profemur; E– profemur showing profemoral groove and presence of tubercles; F– genitalia of female. Abbreviations: sip=siphon; car=carina; pro=pronotum; pfe= profemur; pti= protibia; pfs– profemoral sulcus; gp1= gonapophysis-1; gp2= gonapophysis-2.

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Figure 5
Records of Curicta johnpolhemi Keffer in South America and Brazil, indicating new records in the state of Maranhão.

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Figure 6
Female Curicta montei De Carlo. A– habitus, dorsal view; B– dorsal view of head and pronotum; C– lateral view of profemur; D– profemur with profemoral groove and teeth and tubercles; E– genitalia of female. F– Last abdominal segment, lateral view. Abbreviations: sip=siphon; pro=pronotum; pfe= profemur; pti= protibia; tpg= teeth of profemoral groove; gp1=gonapophysis 1; gp2=gonapophysis 2; pes= parasternum; VII seg= seventh abdominal segment.

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Figure 7
Records of Curicta montei De Carlo in South America and Brazil, indicating new records in the state of Maranhão.

Figure 1 Typical habitats where species of Curicta Stål may be found in the state of Maranhão. A– Buriti Corrente stream (Caxias municipality); B– Ourives River (Barra do Corda municipality); C– Mearim tributary (Barra do Corda municipality); D– Pond (Caxias municipality).

Figure 2 Female of Curicta granulosa De Carlo. A– Habitus, dorsal view; B– Dorsal view of head and pronotum; C– Lateral view of profemur; D– Profemur with profemoral groove and teeth and tubercles; E– Last abdominal segment, lateral view; F– Genitalia of female. Abbreviations: sip=siphon; car= carina; prg= pronotal groove; pro=pronotum; pti= protibia; pfe= profemur; tpg= teeth of profemoral groove; pes= parasternum; VII seg= seventh abdominal segment; gp1=gonapophysis-1; gp2=gonapophysis-2.

Figure 3 Records of Curicta granulosa De Carlo in South America and Brazil, indicating new records in the state of Maranhão.

Figure 4 Curicta johnpolhemi Keffer female (holotype) and male. A– habitus of female, dorsal view; B– habitus of male, dorsal view; C– dorsal view of head and pronotum; D– lateral view of profemur; E– profemur showing profemoral groove and presence of tubercles; F– genitalia of female. Abbreviations: sip=siphon; car=carina; pro=pronotum; pfe= profemur; pti= protibia; pfs– profemoral sulcus; gp1= gonapophysis-1; gp2= gonapophysis-2.

Figure 5 Records of Curicta johnpolhemi Keffer in South America and Brazil, indicating new records in the state of Maranhão.

Figure 6 Female Curicta montei De Carlo. A– habitus, dorsal view; B– dorsal view of head and pronotum; C– lateral view of profemur; D– profemur with profemoral groove and teeth and tubercles; E– genitalia of female. F– Last abdominal segment, lateral view. Abbreviations: sip=siphon; pro=pronotum; pfe= profemur; pti= protibia; tpg= teeth of profemoral groove; gp1=gonapophysis 1; gp2=gonapophysis 2; pes= parasternum; VII seg= seventh abdominal segment.

Figure 7 Records of Curicta montei De Carlo in South America and Brazil, indicating new records in the state of Maranhão.

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<i>Curicta</i> Stål, 1862 (Insecta: Heteroptera: Nepidae) from Maranhão, Brazil

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[1] *Corresponding author. E-mail: stefanellof@gmail.com (F. Stefanello).