Okanagrion angustum Archibald & Cannings & Erickson & Bybee & Mathewes 2021, new species
Bibliographic record
Abstract
Okanagrion angustum Archibald & Cannings, new species Fig. 36. Diagnosis. Wings separated from those of all others but O. beardi by IR2 origin on RP1-2 [all others: origin between RP1-2, RP3-4]; from O. beard, O. dorrellae by Ax1 to nodus 1–1.5 mm longer than for O. beardi: 1.5 mm longer than for O. dorrellae; from O. worleyae, O. dorrellae by narrower at level of nodus: O. angustum about 5.5 mm wide [O. worleyae: about 4.5 mm, O. dorrellae 4 mm]. Further separated by colouration (sex unknown): similar to that of O. hobani in preserved portions (much of posterior margin, apical portion not preserved), differs from others as in its diagnosis. Type material. Holotype: RBCM.EH2017.050.11.2491 (Fig. 36), collected at McAbee by John Leahy, date unknown. Much of the proximal three-quarters of a wing. Housed in the Royal British Columbia Museum collections. Description. Holotype, RBCM.EH2017.050.11.2491, wing. Shape: wing narrow, as in diagnosis; colour (preserved portion) as in O. hobani, see diagnosis; few crossveins in postnodal, postsubnodal spaces preserved, mostly not aligned; RP2 origin 6.5 cells distal to origin of IR2; IR2 origin at subnodus, on RP1-2 as in diagnosis; RP3-4: origin in distal part of middle third between arculus, nodus; arculus just proximal to Ax2; Ax0 not detected; no crossvein O in preserved portion; no major vein zigzags in preserved portions; CuA–A space with four, possibly five cells wide at widest (between levels of origins of IR1, RP2). Etymology. The specific epithet is the neuter form of the Latin angustus (- a, - um) meaning “narrow”, referring to the distinctive wing shape of the species. Range and age. McAbee, BC, Canada, mid-Ypresian.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.011 | 0.003 |
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".