Data from: Robust phylogenomics settles controversies of classification and reveals evolution of male embolic complex of the Laufeia clade (Araneae, Salticidae, Euophryini)
Bibliographic record
Abstract
Abstract The Laufeia clade is a peculiar lineage of euophryine jumping spiders showing elevated divergence of male genitalic structures, especially the embolic complex that directly interacts with female genitalia during sperm transfer. With the rapid growth of species discovery in the Laufeia clade, the controversy in its classification has become a crucial problem. In this study, we applied a phylogenomic approach using ultra-conserved element data to infer the phylogeny of the Laufeia clade with extensive taxon sampling. A comparative morphological study was also performed to evaluate diagnostic characters and understand the evolution of male embolic complex within the Laufeia clade. The results provide a strongly supported phylogenetic framework and updated generic concepts for the Laufeia clade. The updated genera within the Laufeia clade were all recovered as monophyletic with well-defined synapomorphies identified through character mapping on the phylogeny. Ancestral state reconstruction analyses revealed that the Type I embolic complex was ancestral and gradually evolved into the Type II and III embolic complex, and that some shapes of embolus often evolved multiple times independently in different lineages of the Laufeia clade. The shift from foliage dwelling to tree trunk dwelling at the common ancestor of the Laufeia clade may have facilitated the divergent evolution of male embolic complex in the Laufeia clade. This study provides a solid foundation for future studies of systematics and evolution of this group.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.003 | 0.005 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.005 | 0.004 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".