Larval morphology of the tribe Matini (Coleoptera: Dytiscidae, Colymbetinae): descriptions of<i>Batrachomatus daemeli</i>,<i>Matus bicarinatus</i>, and<i>Allomatus nannup</i>and phylogenetic relationships
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Bibliographic record
Abstract
Abstract Descriptions are presented of larval instars of three species of the colymbetine tribe Matini Zimmermann (Coleoptera: Dytiscidae), Batrachomatus daemeli (Sharp), Matus bicarinatus (Say), and Allomatus nannup Watts, including a chaetotaxic and porotaxic analysis of the cephalic capsule, head appendages, legs, last abdominal segment, and urogomphi. A parsimony analysis based on 32 informative larval characteristics was conducted with the computer program NONA. Members of the Matini are postulated to share a monophyletic origin based on ( i ) seta TR2 articulated anteroventroproximally on the trochanter; ( ii ) seta TR5 elongate on the metatrochanter; ( iii ) seta TA1 elongate and inserted proximally on the tarsus; ( iv ) antenomere III with a hole-like ventroapical spinula; ( v ) prementum with the primary setae LA2, LA3, LA4, LA5, and LA8 spine-like and elongate; ( vi ) presence of secondary setae on the cephalic appendages; and ( vii ) presence of additional primary setae on the last abdominal segment. A clade Matini + Colymbetini is postulated based on ( i ) metafemoral seta FE5; ( ii ) metafemoral seta FE6; ( iii ) seta TI6 on tibia, all elongate and hair-like; ( iv ) one-segmented urogomphus; ( v ) presence of an occipital suture in first instar; ( vi ) galea elongate; ( vii ) presence of natatory setae on legs; and ( viii ) presence of secondary setae on the urogomphus.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it