New and revised taxa of Neotropical Diplotaxini (Coleoptera: Melolonthidae): do they change the existing relationships? Revisiting systematics with morphological and molecular data
Bibliographic record
Abstract
Abstract The relationships among the Neotropical Diplotaxini and homology of revised and new taxa are revisited with parsimony analyses based on morphological characters, and probabilistic analyses based on concatenated ITS2 and COI genes. Neotropical Diplotaxini is now composed of five monophyletic genera: Pacuvia, Pachrodema, Homalochilus, Liogenys, and Careocallus gen. nov.. Pseudodiplotaxis is here transferred to incertae sedis of Melolonthinae. Careocallus is the sister genus of Liogenys and is composed of Careocallus tehuelche sp. nov. and Careocallus densicollis sp. nov. Sister phylogenetic relationship between Homalochilus and the rest of genera except Pacuvia is revealed. Homalochilussensu nov. is comprised by Homalochilus punctatostriatus and Homalochilus nigripennis sp. nov. This genus recovered its monophyly by transferring Homalochilus niger to Liogenys, as Liogenys nigercomb. nov. and this name is also synonymized with L. morio. The type species of Homalochilus is emended to be H. punctatostriatus. A neotype (Liogenys morio) and lectotypes (H. punctatostriatus, H. niger) are designated. Dichotomious key to Neotropical Diplotaxini genera and to species of Homalochilus and Careocallus are presented. Sequences and phylogenetic signals for Neotropical melolonthines are reported for the first time.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 teacher head, 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".