Taxonomic revision of Achradocera Becker (Diptera: Dolichopodidae), with description of two new species
Bibliographic record
Abstract
The New World genus Achradocera Becker, 1922 (Diptera: Dolichopodidae) is revised and includes the following 12 species: A. angustifacies Becker stat. rev. (= A. chilensis (Van Duzee) syn. nov. and A. edwardsi (Van Duzee) syn. nov.; Chile); A. apicalis (Aldrich) (Antigua, Dominica, Marquesas, Montserrat, St. Lucia, Tonga and French Polynesia); A. arcuata (Van Duzee) (western USA, Hawaii and Mexico); A. balin sp. nov. (Brazil); A. barbata (Loew) (eastern Canada and eastern USA); A. excavata (Van Duzee) (Bahamas, British Virgin Islands, Cuba, Dominican Republic, Jamaica and Puerto Rico); A. femoralis Becker (Colombia and Curaçao); A. gimli sp. nov. (Brazil, Bolivia and Trinidad and Tobago); A. insignis Parent (Brazil, Paraguay and Argentina); A. longiseta Parent (Argentina); A. meridionalis Becker (= A. contracta (Van Duzee) syn. nov. and A. shannoni (Van Duzee) syn. nov.; Mexico, Belize, Guatemala, El Salvador, Peru and Hawaii); and A. tuberculata (Van Duzee) (Brazil, Guyana, Trinidad and Tobago and Venezuela). All valid species and their diagnostic features are fully photographed, a key to males is provided and the known distribution of each species is mapped.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 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".