Research Article |
Corresponding author: Tom Jamonneau ( tom.jamonneau@etu.umontpellier.fr ) Academic editor: Thomas Schmitt
© 2024 Tom Jamonneau.
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:
Jamonneau T (2024) First record of Stempfferia insulana (Aurivillius, 1923) from Gabon, Central-West Africa. Contributions to Entomology 74(1): 53-57. https://doi.org/10.3897/contrib.entomol.74.e117994
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This note is grounded in the examination of Afrotropical butterflies belonging to the entomological collections at CBGP, Montpellier, France. In the course of historical specimen referencing, the species Stempfferia insulana (Aurivillius, 1923; Lycaenidae) was recorded from Gabon. This is the first report of this species for this country, and the most western data for this Central-Western African species.
African butterflies, biodiversity, entomological collections, Lepidoptera, rain forests, species diversity
Gabon, a country of approximately 268,000 square kilometers in Central-West Africa, is a biodiversity hotspot, notably being home to at least 1,100 butterfly species (superfamily Papilionoidea) as documented by Gael
Gabon possesses substantial biodiversity potential. As a result, recent studies have revealed numerous new records and species across various taxa. Notable findings include reptiles (e.g.,
Stempfferia is an Afrotropical genus classified within the Family Lycaenidae; Subfamily Poritiini; and Tribe Epitolini (
Mr. Henri-Pierre Aberlenc collected a Stempfferia specimen in February 1999 in the forest commonly referred to as the ‘Forêt des Abeilles’, and located between the cities of Lopé and Boué in the central region of Gabon. The collection site was the Makandé research camp (-0°41.366664'N, 11°55.083333'E (DDM)) (for further details, see
After the scientific mission, the specimen was archived in the entomological collection of the
Centre de Coopération Internationale en Recherche Agronomique pour le Développement (
Identification was made using morphological discriminating criteria, particularly the key to discriminate males of the S. cercene group found in Mr. Libert’s revision (
Habitus of nine Stempfferia sp. individuals; uppersides on the left and undersides on the right. A, B. The male S. insulana recorded from Gabon. C–R. Additional specimens retrieved. C, D. The male S. insulana MLIB2273; E, F. The male S. insulana MLIB-1917; G, H. The male S. cercene MLIB-1880; I, J. The male S. cercene MLIB-1485; K, L. The male S. cercenoides MLIB2292; M, N. The male S. cercenoides (ex. R. Ducarme) in coll. T. Desloges; O, P. the female S. insulana MLIB2279; Q, R. The female S. cercene MLIB-2337. The elements in the figures are not to the same scale.
All photographs were processed and edited with Adobe Photoshop 2020 and FastStone image viewer. When needed, measurements on the photographs were made using the free online tool Mesurim2 (https://www.pedagogie.ac-nice.fr/svt/productions/mesurim2/).
As (i) the underside of the specimen is not white, the hindwings underside is extensively marked with white and there is no darkened median area separating the discal band from the basal one on the underside of the forewing, this specimen belongs to the S. cercene group. Females of the group are easily distinguishable from males since the suffusion of blue scales of the proximal part of the upper forewings is restricted, and is in great part replaced by white marks (Fig.
To date, S. insulana has been documented in Cameroon (western regions), Equatorial Guinea (Bioko), Congo, Central African Republic, the Democratic Republic of Congo, Uganda, and northwestern Tanzania (
Up-to-date countries where Stempfferia insulana is known to occur in Central-West Africa. The dark orange dot is the new occurrence in Gabon. One should bear in mind that this map does not give a locally accurate distribution. For instance S. insulana is not found anywhere near the Tanzanian coast.
This new record reinforces the value of the examination of biological material in entomological collections.
I would like to extend my gratitude to several entomologists at CBGP, namely Mr. Julien Haran, Mr. Laurent Soldati, Mr. Antoine Foucart and Mr. Jean-Claude Streito, who welcomed me into their facilities and generously shared their time. Additionally, I wish to express my sincere appreciation to Mr. Michel Libert, Mr. Henri-Pierre Aberlenc, Mr. Jon Baker, Mr. Thomas Desloges and Mr. Gael Vande Weghe for their support throughout this project. I would also like to extend my thanks to Ms. Julia Pearl for helping to improve the quality of English writing in this article. Lastly, I am thankful for the feedback provided by the reviewers, which enhanced the quality of this article.