The male genitalia segments in fritillary butterflies: Comparative morphology with special reference to the "rectal plate" in Issoria (Lepidoptera: Nymphalidae)
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Bibliographic record
Abstract
The male genitalia of the fritillary butterfly Issoria lathonia (L.) were examined and reconstructed based on sagittal and horizontal sections. Nine intrinsic muscles were identified consistent with previous results. The retractor of the anal tube probably operates the "rectal plate", a large, sclerotised, arched plate present ventral to the rectum and dorsal to the phallus in all Issoria s. str. species. The function of the rectal plate is still largely unknown, but it has presumably an important function during copulation. The retractor of the phallus inserts on the phallus, and also on a small, ventral sclerite in the anellus. The retractor of the vesica is smaller in I. lathonia than its counterpart in other Argynnini and originates more centrally inside the phallus. The tergal sclerite, common in most Argynnini, has no attaching muscle and its evolutionary origin remains unclear. The presence of an intrinsic muscle (i3) originating on the tegumen and inserting on the valve in Argynnini cannot be confirmed here. Though generally absent in butterflies, this muscle has been reported once in the North American Argynnis subgenus Speyeria.
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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 | 0.001 | 0.000 |
| 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 | 0.000 |
| 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