Pest categorisation of Arrhenodes minutus
Bibliographic record
Abstract
The Panel on Plant Health performed a pest categorisation of Arrhenodes minutus, a well-defined wood-boring insect species in the family Brentidae (Insecta: Coleoptera). It can be identified using taxonomic keys. A. minutus is only present in southern Canada and eastern USA down to Florida. The main host plants of A. minutus are species of the genera Quercus, Ulmus, Fagus and Populus. The pest larvae bore galleries in the wood, causing structural damage to the timber. The pest is also a vector of the quarantine pest Breziella (Ceratocystis) fagacearum. A. minutus most often lays its eggs in wounded parts of the trees where sap is oozing. The female bores minute holes with her snout and deposits one egg in each of them. The larvae bore a straight gallery against the grain. When the gallery nearly reaches the other side of the bole, it makes a sharp U-turn towards the point of origin. These galleries cause structural damage to the timber. The life cycle lasts generally 3 years, but some individuals develop in 2 years and a few require 4 years. The main pathways are wood and possibly plants for planting. Specific phytosanitary requirements exist for Quercus and Populus only, while Ulmus is regulated in relation to other pests. Establishment would be favoured by the wide distribution of host trees in the EU territory and by climatic conditions locally comparable to those of the pest's native range. A. minutus meets all the criteria assessed by EFSA for consideration as potential Union quarantine pest. The criteria for considering it as a potential Union regulated non-quarantine pest are not met since the species is absent from the EU.
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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) | 0.000 | 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".