Research Article |
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Corresponding author: José Luis Yela ( joseluis.yela@uclm.es ) Academic editor: Kevin Keegan
© 2025 José Luis Yela, David Molina, Antonio S. Ortiz.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Yela JL, Molina D, Ortiz AS (2025) Agrotis villenensis—a new species of Noctuinae (Lepidoptera, Noctuidae) from the southeastern Iberian Peninsula. ZooKeys 1239: 21-32. https://doi.org/10.3897/zookeys.1239.147164
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Agrotis villenensis sp. nov. is described from the Iberian Peninsula. Differential superficial, genital and genetic (barcode) characters from its closest Iberian and European relative species, Agrotis vestigialis (Hufnagel, 1766), are presented. Morphologically, the new species is best characterized in the male genitalia by the shape of the basal vesica and the presence of a median diverticulum and in the female genitalia by its comparatively long appendix bursae. The barcode of A. villenensis differs from those of related species and is assigned a unique BIN.
DNA barcode, integrative taxonomy, new species
The family Noctuidae Latreille, 1809 includes approximately 11,772 species and 1,089 genera worldwide (
Although species groups based in external similarity have been proposed (
During recent studies of the Noctuoidea of the Iberian Peninsula, the authors found a new Agrotis species of the vestigialis group that has significant morphological differences from all other Iberian Agrotis species and a unique barcode. The aim of the present study is to describe this species as Agrotis villenensis sp. nov., comparing it with its putative sister species, A. vestigialis.
This study was based on the morphology of 11 adult moths collected (n = 7) or photographed (n = 4) in Peña Rubia, Villena, in the Alicante province of southwest Spain.
They were examined externally to assess differences in their color and wing pattern based on the pertinent taxonomic traits of Agrotis provided by
Male specimens of the Iberian nominal species of the Agrotis vestigialis species group, for comparison A A. villenensis sp. nov., holotype B Agrotis vestigialis, Playa La Rubina, Empuriabrava, Gerona C Agrotis yelai, Castronuño, Valladolid D Agrotis charoae, Playa de Oyambre, San Vicente de la Barquera, Cantabria E Agrotis sabulosa, Huelva F Agrotis garretasorum, Toril, Cáceres. Photographs: J. L. Yela.
Legs of four adult specimens of Agrotis villenensis (Table
Interspecific mean K2P (Kimura 2-Parameter) divergences (mean pairwise distances) based on the analysis of COI fragments (>500 bp) among Agrotis villenensis and other Agrotis and outgroup species (GRA: A. graslini; VES: A. vestigialis; VIL: A. villenensis; SIM: A. simplonia; SPI: A. spinifera; SEG: A. segetum; REC: E. recussa).
| GRA | VES | VIL | SIM | SPI | SEG | REC | |
|---|---|---|---|---|---|---|---|
| A. graslini | 3.34 | 3.50 | 6.08 | 5.17 | 6.23 | 8.28 | |
| A. vestigialis | 1.37 | 3.80 | 4.56 | 5.02 | 5.78 | ||
| A. villenensis | 4.10 | 5.02 | 5.02 | 6.08 | |||
| A. simplonia | 4.26 | 4.56 | 5.62 | ||||
| A. spinifera | 4.71 | 5.62 | |||||
| A. segetum | 6.69 |
Sequence divergences of barcodes were calculated using the Kimura 2-parameter (K2P) model (
DZPA UM: Research Collection of Animal Biology at the Department of Zoology and Physical Anthropology of the University of Murcia, Spain.
JLY UCLM: Research Collection of José Luis Yela, University of Castilla-La Mancha, Toledo, Spain.
Holotype
, male. SPAIN • province of Alicante: Villena, Peña Rubia; 38.6092, -0.8043; 620 m elev.; 23 Sep 2023; g. prep. JLY90.1892; leg. J. L. Yela & D. Molina, in coll. JLY, UCLM (catalogue number T-JLY-039). Paratypes. 2 males, 4 females; same locality as holotype • 13 Sep 2010; leg. D. Molina (1 male), in coll. JLY, UCLM (catalogue number T-JLY-040) • 23 Sep 2023; g. prep. JLY90.1981, IBLAO3089-24; leg. J. L. Yela & D. Molina (1 female), in coll.
Four additional specimens were recorded as photographs, all from the same locality: one male, 15 Sep 2019, and 3 females, 26 Sep 2009, 13 Sep 2010 and 17 Sep 2020.
Externally, very similar to A. vestigialis (Figs
The male genitalia of A. villenensis are similar to those of the related species in the A. vestigialis species group, but with four key distinctive features (Fig.
Male genitalia of A. villenensis sp. nov. A external capsule of the holotype (g. prep. JLY90.1892) B external capsule of a male paratype, pressed to better show the curved shape of the valvae (g. prep. JLY90.1891) C phallus with everted vesica; arrows indicate the digitiform, subbasal diverticulum and the median diverticulum (g. prep. JLY90.1892). Photographs: Mateo Yela Berzosa.
The female genitalia of A. villenensis (Fig.
The four known COI sequences of A. villenensis are identical and form BIN BOLD:AEM2348 (sequence length 658 bp). This new species differs from A. vestigialis by at least 1.37% (BOLD:AAD1898; n = 55; mean 1.04; maximum distance 2.73%) (Table
Wingspan: males 31.6–40.0 mm (mean 35.7; n = 3), females 33.9–40.0 mm (mean 36.7 mm, n = 4). Groundcolor of the forewings greyish, in the males with brownish tinge, in the females pinkish. Head: male antennal segments bipectinate and ciliate, as in A. vestigialis; 13 distal antennomeres ciliate. Female antenna filiform. Labial palpi short. Haustellum long, well developed. Thorax: dark greyish patagia; tegulae light gray, with dark anterior border. Wings: design of the forewings generally low contrast. Antemedial (basal) line inconspicuous, as a double strip delimiting the clearly visible ochreous basal spot towards its external side and, in some specimens, forming a grayish basal wedge that extends beyond the basal spot. Postmedial line usually less marked or even absent (Fig.
Agrotis villenensis appears to be endemic to the southeastern Iberian Peninsula. It is only known from one locality in the inland northern Alicante province (Fig.
The adult is active in September in one apparently short generation. The early stages are unknown. All known specimens were collected in a hilly area at 620 m elevation, just a few metres from a forest area dominated by pine forests of Pinus halepensis Mill. and associated scrub. The soil is sandy due to an inland dune of eolian origin, consisting of sand-sized quartz and limestone particles. This sandy area occupies a strip of land about 8 km long and between 300 m and 2 km wide, which runs from the shadow of the Peña Rubia mountain range, continuing along the slopes of the Frare mountain range between the municipalities of Villena and Biar. The area also contains crops in production (mainly olive and almond trees) and country houses. The sabulicolous vegetation extends along hills, ravines, fields without tillage and crop margins, distinguished by the presence of stone pine (Pinus pinea L.) and various other plants as Maresia nana (D.C.) Batt, Teucrium dunense Sennen, Sideritis chamaedryfolia subsp. chamaedryfolia and Linaria depauperata subsp. hegelmaieri (Lange) De la Torre, Alcaraz & M.B. Crespo.
The name of the species is dedicated to the city of Villena in the province of Alicante, where all known specimens were collected.
In Agrotis, some species groups can be relatively easily recognized, such as the A. fatidica Hübner, 1824 species group, which was studied by
In several groups of invertebrate taxa, differences in barcode sequences higher than 2% are typical of interspecific variation (
The wing pattern of A. villenensis is similar to that of the very variable A. vestigialis, whilst male and female genitalia are also similar but with distinctive features, as explained in the diagnosis of the new species above. The small number of specimens studied hinders a statistical analysis of these features, although genitalia and barcode differences and geographic isolation support the species status of A. villenensis.
Members of the A. vestigialis species group are associated with herbaceous plants growing on sandy soils, where their larvae feed on the roots of several herbaceous plants (
The fact that A. villenensis has remained unknown to science so far precludes informed inferences about the degree of threat to which the species may be submitted to. For this reason, it would be important to intensify sampling in supposedly suitable places, in principle not strictly coastal sandy areas located approximately between the Spanish provinces of Murcia and Tarragona.
We are very grateful to the staff at the Canadian Centre for DNA Barcoding for sequence analysis. Paul D.N. Hebert and many other colleagues of the Barcode of Life project (Biodiversity Institute of Ontario, Guelph, Canada) contributed to the success of this study. Rosa María Rubio, Manuel Garre and Juan José Guerrero helped with comments. Mateo Yela Berzosa took most photographs and edited them. We thank Ole Karsholt (ZMUC, Copenhaguen), Mercedes París (
Environmental Authorities in the Comunidad Valenciana provided collecting permits and access to field sites; we are particularly grateful to Joaquín Baixeras for his efforts and Federico Fernández González for supporting our field work.
The authors have declared that no competing interests exist.
No ethical statement was reported.
This study has been financed by the projects Fauna Ibérica XII - Lepidoptera: Noctuoidea I (PGC2018-095851-B-C63) and Fauna Ibérica: Noctuoidea II (PID2023-149039NB-I00) of the Spanish Ministry of Research and Science.
Conceptualization: JLY. Data curation: JLY, DM. Funding acquisition: JLY, ASO. Investigation: ASO, JLY. Project administration: ASO. Writing - original draft: ASO, JLY - review and editing: ASO, DM, JLY.
José Luis Yela https://orcid.org/0000-0003-1371-8495
David Molina https://orcid.org/0000-0002-6057-831X
Antonio S. Ortiz https://orcid.org/0000-0002-3877-6096
All of the data that support the findings of this study are available in the main text.