An extraordinary case of elytra loss in Coleoptera (Elateroidea: Lycidae): discovery and placement of the first anelytrous adult male beetle

Ferreira, Vinicius S.; Barbosa, Felipe Francisco; Bocáková, Milada; Solodovnikov, Alexey

doi:10.1093/zoolinnean/zlad026

Cited by 9 publications

(7 citation statements)

References 116 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We performed a series of classic nonparametric tree topology tests ( i.e ., paired-site tests sensu Felsenstein, 2004b ) that can be used in parsimony- and likelihood-based phylogenies ( Felsenstein, 2004b ; Goldman, Anderson & Rodrigo, 2000 ; Shimodaira, 2002 ), following a well-known similar approach used in many studies ( e.g ., Buckley, 2002 ; Černý & Simonoff, 2023 ; Ferreira et al, 2023 ; Schneider, 2007 ). Our topology tests included both parsimony- and likelihood-based tests to avoid any bias favouring any tested phylogenetic tree-building method.…”

Section: Methodsmentioning

confidence: 99%

Performance of tree-building methods using a morphological dataset and a well-supported Hexapoda phylogeny

Francisco Barbosa,

Mermudes,

Russo

2024

PeerJ

View full text Add to dashboard Cite

Recently, many studies have addressed the performance of phylogenetic tree-building methods (maximum parsimony, maximum likelihood, and Bayesian inference), focusing primarily on simulated data. However, for discrete morphological data, there is no consensus yet on which methods recover the phylogeny with better performance. To address this lack of consensus, we investigate the performance of different methods using an empirical dataset for hexapods as a model. As an empirical test of performance, we applied normalized indices to effectively measure accuracy (normalized Robinson–Foulds metric, nRF) and precision, which are measured via resolution, one minus Colless’ consensus fork index (1-CFI). Additionally, to further explore phylogenetic accuracy and support measures, we calculated other statistics, such as the true positive rate (statistical power) and the false positive rate (type I error), and constructed receiver operating characteristic plots to visualize the relationship between these statistics. We applied the normalized indices to the reconstructed trees from the reanalyses of an empirical discrete morphological dataset from extant Hexapoda using a well-supported phylogenomic tree as a reference. Maximum likelihood and Bayesian inference applying the k-state Markov (Mk) model (without or with a discrete gamma distribution) performed better, showing higher precision (resolution). Additionally, our results suggest that most available tree topology tests are reliable estimators of the performance measures applied in this study. Thus, we suggest that likelihood-based methods and tree topology tests should be used more often in phylogenetic tree studies based on discrete morphological characters. Our study provides a fair indication that morphological datasets have robust phylogenetic signal.

show abstract

Section: Methodsmentioning

confidence: 99%

Performance of tree-building methods using a morphological dataset and a well-supported Hexapoda phylogeny

Francisco Barbosa,

Mermudes,

Russo

2024

PeerJ

View full text Add to dashboard Cite

show abstract

“…Although females are more affected than males in the paedomorphic lineages, even the latter sometimes show more-or-less similar morphological modifications, including shortening or even loss of the elytra (Ferreira et al, 2023;Kusy et al, 2019). In Dexorinae, females are unknown but hypothesized to be paedomorphic.…”

Section: Superfamily Elateroideamentioning

confidence: 99%

“…In many cases, however, females are unknown and we can only hypothesise that they are also highly paedomorphic (for more information, see Kusy et al, 2019). Although females are more affected than males in the paedomorphic lineages, even the latter sometimes show more‐or‐less similar morphological modifications, including shortening or even loss of the elytra (Ferreira et al, 2023; Kusy et al, 2019). In Dexorinae, females are unknown but hypothesized to be paedomorphic.…”

Section: Systematic Reviewmentioning

confidence: 99%

“…In Lycinae, paedomorphic females are reported in Leptolycini and likely also occur in some Calopterini (Ferreira, 2020; Ferreira & Ivie, 2022; Miller, 1991). Ferreira et al (2023) recently described Xenomorphon baranowskii Ferreira et al from a high‐altitude region in Mexico, which represents a very rare case of anelytrous adult male in Coleoptera; the authors tentatively placed it in Calopterini. Lyropaeinae are the largest lycid group containing larviform females.…”

Section: Systematic Reviewmentioning

confidence: 99%

“…Ferreira et al (2023) recently described Xenomorphon baranowskii Ferreira et al from a highaltitude region in Mexico, which represents a very rare case of anelytrous adult male in Coleoptera; the authors tentatively placed it in Calopterini. Lyropaeinae are the largest lycid group containing larviform females.…”

mentioning

confidence: 99%

See 2 more Smart Citations

When a key innovation becomes redundant: Patterns, drivers and consequences of elytral reduction inColeoptera

Goczał,

Beutel,

Gimmel

et al. 2023

Systematic Entomology

View full text Add to dashboard Cite

The transformation of the fore wings into strongly sclerotized protective covers (elytra) is considered a fundamental evolutionary innovation of the megadiverse order Coleoptera. Surprisingly, these multifunctional structures have been reduced in many distantly related groups of beetles. Patterns, drivers and the evolutionary implications of this modification have never been comprehensively discussed. In the present study, we surveyed the entire order Coleoptera to analyse the patterns of elytral shortening and loss, with a special focus on prevalence, forms, degree of reduction and the functional background of this significant deviation from the coleopteran ground plan. Our analysis revealed that about 20% of all extant species (roughly 88,000 out of 442,275 spp.), distributed across all four suborders, have shortened or even absent elytra. The elytral loss was more frequent within the polyphagan series Elateriformia and Staphyliniformia. Moreover, we found that elytral reduction has independently occurred multiple times in the evolutionary history of Coleoptera and that it has been driven by a wide array of selective drivers. One of the main drivers is the improved flexibility of the uncovered abdomen and the correlated increased manoeuvrability in narrow spaces, as well as the option of using the flexible abdomen as a steering organ or to facilitate mating. Another common driver is mimicry, where exposed metathoracic wings potentially improve the overall similarity to hymenopteran models. Exposure of the abdomen can facilitate the targeted release of defensive abdominal gland secretions and was most likely a crucial step towards establishing relations with social insects enhanced by chemical communication. In the Elateriformia, and rarely in other lineages, elytral loss is a consequence of paedomorphosis, related to a specific resource‐allocation strategy. In many groups of beetles with reduced elytra, alternative defensive strategies can be found. This includes, for instance, aposematic coloration, chemical defence, mimicry or bioluminescence. Direct drivers of elytral loss in many groups remain unclear, and more studies are needed to understand the evolutionary background and implications of this significant morphological modification in Coleoptera.

show abstract

Integrative systematics of Cheguevaria Kazantsev, 2007 (Coleoptera, Lampyridae, Cheguevariinae) identifies genetic stability in color-polymorphic individuals and a disjoint relationship with Amydetinae

Ferreira,

Keller,

Barbosa

et al. 2024

Insect Systematics and Diversity

View full text Add to dashboard Cite

The genus Cheguevaria (Kazantsev 2007) is currently comprised of three species which are endemic to the Greater Antilles: Cheguevaria angusta Kazantsev, 2007 (Hispaniola), Cheguevaria taino Kazantsev, 2007 and Cheguevaria montana Kazantsev, 2008 (both from Puerto Rico). Cheguevaria is the sole member of Cheguevariinae, and a previous morphology-based phylogenetic hypotheses suggested a close relationship with the subfamily Amydetinae. Recent collecting trips to Puerto Rico and the survey of other scientific collections allowed us to identify and locate more specimens of the genus, including several color morphs of specimens tentatively identified as C. montana. We used this material to revise the genus, and to describe Cheguevaria cubensisnew species, the first record of the genus from Cuba. We also produced DNA barcodes based on partial cytochrome c oxidase subunit 1 (COI), which were used to investigate the species limits within color morph species of C. montana. Our results showed a high level of genetic stability in those color morphs, indicating that all specimens belong to the same species. We present a discussion to explain possible scenarios leading to such variation in color patterns. We also generated amplicons for two specimens of Amydetinae, represented by two Amydetes Illiger, 1807 species, and we tested their relationship with Cheguevaria in a phylogenetic context based on a four gene dataset. Our analyzes indicated a disjoint relationship between Cheguevaria and Amydetes, corroborating previously published morphology-based phylogenies, and we maintained the status of Cheguevaria as an independent lineage within Lampyridae.

show abstract

An extraordinary case of elytra loss in Coleoptera (Elateroidea: Lycidae): discovery and placement of the first anelytrous adult male beetle

Cited by 9 publications

References 116 publications

Performance of tree-building methods using a morphological dataset and a well-supported Hexapoda phylogeny

Performance of tree-building methods using a morphological dataset and a well-supported Hexapoda phylogeny

When a key innovation becomes redundant: Patterns, drivers and consequences of elytral reduction inColeoptera

Integrative systematics of Cheguevaria Kazantsev, 2007 (Coleoptera, Lampyridae, Cheguevariinae) identifies genetic stability in color-polymorphic individuals and a disjoint relationship with Amydetinae

Contact Info

Product

Resources

About