Stridulation songs of some Tettigoniidae (Ensifera, Orthoptera) from Papua New Guinea
Bibliographic record
Abstract
Frequency-domain power spectra and time-domain wave amplitude patterns of stridulation signals, are presented for 20 tettigonioid taxa from Papua New Guinea (PNG). Songs of 13 extant species accompany those of 7 species new to science. Extant are Acauloplacella immunis (Phyllomimini), Eumecopoda cyrtoscelis, Segestidea novaeguineae (Mecopodinae), Salomona ustulata, Philmontoides wau, Parahabetia pictifrons, Glennagraecia curvata, Trichophallus capillatus, Morocera nigrifrons, Pseudorhynchus cornutus, Conocephalus semivittatus semivittatus (Conocephalinae), Hexacentrus mundus (Hexacentrinae) and Phyllophora lanceolata (Phyllophorinae). New taxa being described include the species Paraphyllomimus pipiens sp. nov., the subspecies Paraphyllomimus buergersi wauensis, (Phyllomimini), also the subspecies Charisoma karschi 'goggle eye', Eumecopoda pumila, Rentziella gen. nov., Rentziella rufa, Rentziella 'big blue'(Mecopodinae) and Salomona 'darth' (Conocephalinae). The term 'strigin' is suggested as an effective way to refer to the organ of ensiferan sound generation. From waveforms of the sounds and from strigin morphology at least three kinds of stridulation can be inferred: transient, resonant and elastic uncoupled. The resonant-stridulating species Acauloplacella immunis presents an exceedingly high-Q10 value of 45 for its lone 8.8 kHz spectral peak. The 2 species of Eumecopoda frequency modulate (FM) sinusoids in the audio frequency range. The strigins of many species of Mecopodinae incorporate a modified anal vein, the overmirror fold (OF), that cantilevers out above the mirror (speculum) and partially occludes its dorsal aspect: the form of this OF and possible acoustic function are discussed. Old World Phyllomimini contrast a dorsoventral leaf mimicry with a laterally compressed sagittal leaf mimicry seen in New World Pterochrozini and species of both tribes seem to favour very high-Q audio carriers. Defensive sternocoxal stridulation by a phyllophorine katydid has a broad band 'noisy' spectrum.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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) | 0.002 | 0.000 |
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".