Description of the mature larvae of the halophilic diving beetles Mystonectes coelamboides (Fall, 1923) and M. panaminti (Fall, 1923) and comparison with other known Deronectina (Coleoptera: Dytiscidae, Hydroporinae)
Bibliographic record
Abstract
The larval morphology of Mystonectes Fery & Ribera, 2018 is described for the first time based on third instar larvae of the halophilic species M. coelamboides (Fall, 1923) and M. panaminti (Fall, 1923) collected in Death Valley, California (USA). Larvae of these two species differ in some aspects suggesting they are not geographical variants of a single species. Mystonectes larvae share with those of other known Deronectina a synapomorphic very short antennal process (A3) on antennomere 3. With regard to internal Deronectina phylogeny, it appears closely related to Scarodytes Gozis, 1914 and Leconectes Fery & Ribera, 2018 with which they share very elongate legs with natatory setae, very elongate urogomphi, and presence of numerous annuli on urogomphomere 1. Some larval morphological traits suggest a possible phylogenetic relationship between Leconectes and Mystonectes.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".