A review of the small carrion beetle genus Dissochaetus Reitter (Coleoptera: Leiodidae: Cholevinae) of Central America
Bibliographic record
Abstract
Descriptions or diagnoses, a key to species, new records, and distribution maps are presented for 28 species of Dissochaetus Reitter, 1884 from the countries of Central America (Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama). An additional previously recorded species (D. monilis (Murray)) was not recognized. Eight new species are described: D. ancyclostylus Peck and Cook n. sp. of Panama and Costa Rica; D. barrahonda Peck and Cook n. sp. of Costa Rica; D. carinatus Peck and Cook n. sp. of Panama, Honduras, Nicaragua, Costa Rica and Panama; D. cerroverde Peck and Cook n. sp. of El Salvador; D. chelatus Peck and Cook n. sp. of Honduras, Costa Rica and Mexico; D. dendrodes Peck and Cook n. sp. of Guatemala; D. multisetus Peck and Cook of El Salvador and Guatemala; and D. platyformis Peck and Cook n. sp. of Panama and Costa Rica. New records are given for Dissochaetus ovalis (Kirsch) in Panama; D. hetschkoi Reitter in Belize, Guatemala, Honduras, Nicaragua, Costa Rica and Panama; D. fimbriatus (Matthews) in Costa Rica and Panama; D. obscurus Portevin in Guatemala, Honduras, Nicaragua and Costa Rica; D. latitarsis Jeannel in Costa Rica; D. mexicanus Jeannel in Guatemala, Honduras and Nicaragua; D. angustilis Salgado-Costas in Costa Rica and Panama; D. confusus Salgado-Costas in Costa Rica and Panama; D. costaricensis Salgado-Costas in Guatemala, Honduras, Nicaragua and Costa Rica; D. forticornis Salgado-Costas in Guatemala, Honduras, Costa Rica and Panama; D. solisi Salgado-Costas in Costa Rica; D. unidentatus Salgado-Costas in Costa Rica; D. chiapensis Peck and Cook in Guatemala, Costa Rica and Panama; D. claviformis Peck and Cook in Guatemala, El Salvador and Honduras; D. lobatus Peck and Cook in El Salvador and Honduras; D. newtoni Peck and Cook in Belize, Guatemala, Honduras, Costa Rica and Panama; and D. reniformis Peck and Cook in Honduras. All the species are carrion and dung scavengers in semi-arid to wet forests, from near sea-level to 2600 m in elevation, and some are known as troglophilic scavengers on bat guano in caves or in burrows of Orthogeomys Merriam (Geomyidae) rodents, and debris piles of Eciton Latreille Army ant bivouacs.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.007 | 0.009 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| 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".