Bibliographic record
Abstract
Key to the world genera of the Bacchine and Melanostomine groups A. Postpronotum pilose (Fig. MND 64) or if postpronotum bare, then face and/or scutellum at least partially yellow................................................................................................... other Syrphidae - Postpronotum bare; face usually and scutellum entirely black................................................... 1 1. Abdomen elongate to oval, as broad as or broader than thorax.................................................. 4 - Abdomen petiolate, at its narrowest (usually 2nd tergum apex), distinctly narrower than thorax........................ 2 2. Arista pilose, with pili much longer than aristal width; abdomen slightly petiolate, with 2nd tergum narrowed apically and distinctly narrower than 3rd tergum and thorax; hind tibia modified....................................... Spazigaster - Arista bare or at most pubescent, with pili only as long as or slightly longer than basal diameter of arista; hind tibia unmodified .................................................................................................... 3 3. Face with distinct tubercle (Fig. MND 7); metathoracic pleuron bare; scutellum without ventral fringe (not Neotropical).................................................................................................... Baccha - Face without tubercle, straight or convex; metathoracic pleuron pilose; scutellum with ventral fringe (Neotropical only)............................................................................................... Leucopodella 4. Metacoxa bare posteriorly; mesocoxa bare posteriorly......................................................... 7 - Metacoxa with a tuft of pile at posteromedial apical angle (Fig. MND 77); mesocoxa pilose posteriorly................. 5 5. Metepisternum with several fine subappressed hairs; katepisternum with pile patches broadly separated posteriorly, joined anteriorly.................................................................................. Xanthandrus - Metepisternum bare; katepisternal pile patches broadly separated throughout...................................... 6 6. Metafemur swollen; antennal pits continuous (Afrotropical only)......................................... Pelloloma - Metafemur slender; antennal pits separated (Neotropical only)............................................ Talahua 7. Metasternum greatly reduced, with deep posterior incision laterally so that sclerotized portion consists of a median diamond-shaped area with narrow anterior and lateral strips (Fig. MND 70); face not produced below, with small tubercle; male legs slender, without bristles, pile tufts or modified hairs............................................. Melanostoma - Metasternum entire (cf. Fig. MND 71); face variable, almost straight with weak tubercle or moderately or strongly produced forward ventrally; male sometimes with legs modified, either broadened, or with special bristles, pile tufts or modified hairs .................................................................................................... 8 8. Face not greatly produced anteriorly; basoflagellomere oval or slightly elongate, never more than twice as long as broad... 11 - Face produced greatly anteriorly, usually extending well anterior to antennal base; antenna elongate, as long as or longer than face; basoflagellomere elongate, 4 or more times as long as broad............................................... 9 9. Eye pilose; basoflagellomere elongate, more than 5 times as long as broad; male dichoptic............ Pseudoplatycheirus - Eye bare; basoflagellomere shorter; male holoptic........................................................... 10 10. Eye normal; gena and ventral occiput small, not enlarged; anterior tentorial pit shallow; facial stripe narrow (Neotropical (Andes)).............................................................................. Tuberculanostoma - Eye reduced; gena and ventral occiput enlarged; anterior tentorial pit deep; facial stripe broad (Palaearctic (Pamirs))............................................................................................" Tuberculanostoma " 11. Male proleg usually modified, with protibia apically and probasitarsomere expanded, or profemur or protibia with specialized chaetotaxy (Holarctic & Neotropical (Andean))............................................................. 13 - Male legs simple (Neotropical or Afrotropical)............................................................. 12 12. Face with transverse grooves dorsally along tubercle; facial tubercle low dorsally, not distinct; antennal pits separated (Neotropical)................................................................................... Argentinomyia - Facial tubercle distinct dorsally, without grooves; antennal pits confluent (Afrotropical)...................... Afrostoma 13. Mesonotum smooth or with puncta finer and more widely scattered, not producing a distinct rugose appearance; legs partially pale.................................................................................. Platycheirus ... 15 - Mesonotum distinctly and finely rugose; rugose appearance due to large and closely set puncta, puncta set in irregular rows; legs black........................................................................................... 14 14. Arista bare, inserted near middle of basoflagellomere; face wider ventrally, with sides divergent ventrally; abdomen with pale maculae.................................................................................. Rohdendorfia - Arista pubescent, with short, appressed pile, inserted basally; face not distinctly wider ventrally, with sides approximately parallel; abdomen entirely black................................................................ Syrphocheilosia 15. Wing shorter than abdomen; abdomen broad or mostly red or black with 2 yellow maculae on 3rd tergum...... Pyrophaena - Wing longer than abdomen; abdomen narrow, not with such abdominal pattern.................................... 16 16. Male: Protibia apically and/or protarsus expanded, usually with specialized setae; profemur without specialized chaetotaxy........................................................................................ Platycheirus (s.s.) - Male: Protibia and protarsus simple...................................................................... 17 17. Male: Profemur posteriorly on at least apical 1/2 with row of stiff straight black setae, with apical-most (last) seta longer and with its apex strongly curved.................................................................. Pachysphyria - Male: Profemur without such specialized chaetotaxy......................................................... 18 18. Face produced ventrally, pollinose with distinct bare puncta; male protibia usually with long black bristles proteriorly (Holarctic and Andean).............................................................................. Carposcalis - Face not produced, without distinct bare puncta; male protibia without such specialized chaetotaxy (New Zealand only)................................................................................................ Eocheilosia
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.003 | 0.002 |
| Science and technology studies | 0.004 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.079 | 0.023 |
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".