Bibliographic record
Abstract
Genus Simorhynchotus Stebbing, 1888 (Figs 21–22) Simorhynchus Claus 1871: 156.— Claus 1879: 32 (key), 42–43.— Gerstaecker 1886: 486.— Claus 1887: 56 (key), 65. Simorhynchotus Stebbing, 1888: 1572.— Bovallius 1890: 46 (key), 48.— Spandl 1927: 178 (key).— Pirlot 1929: 161.— Hurley 1955: 182 (incl. key).— Yoo 1971: 63 (key).— Bowman & Gruner 1973: 53.— Zeidler 1978: 30 (key), 31.— Vinogradov et al. 1982: 381 (key), 390–391.— Nair 1995: 6 (key), 8.— Shih & Chen 1995: 212.— Vinogradov 1999: 1194 (key), 1195. Type species. Simorhynchus antennarius Claus, 1871 by monotypy and subsequent designation by Stebbing. Stebbing (1888) changed the spelling of Simorhynchus because it was “preoccupied among birds”. Type material could not be found at the MFN or ZMH and is considered lost. However, the description and figures provided by Claus (1871, 1879, 1887) for this species, readily characterise this genus. No specific type locality is given; just “Grosses Ocean” (the Pacific). Diagnosis. Body shape robust or globular. Head rounded with slight rostrum in males. Eyes occupying most of head surface; grouped in one field on each side of head. Antennae 1 of males with 2-articulate peduncle; flagellum with large, crescent-shaped callynophore, with small antero-distal lobe, with aesthetascs arranged in two-field brush medially; with three smaller articles inserted below antero-dorsal corner. Antennae 1 of females with 2- articulate peduncle; callynophore narrowly rectangular, with two smaller articles inserted terminally. Antennae 2 absent in females. Antennae 2 of males 5-articulate; strongly zig-zagged, with most articles folded back on each other; extending anteriorly under head and posteriorly between the gnathopoda and pereopoda to pereonite 7; basal article distinctly inflated, about half or less the length of following article; following three articles of similar length; terminal article very short, not folded, pointing posteriorly. Mandibular incisor relatively broad, with several teeth, with small distal lobe medially; in male orientated more or less parallel to palp. Maxillae 1 & 2 absent. Maxilliped with inner lobes completely fused; medial margin of outer lobes with membranous fringe. Gnathopod 1 simple. Gnathopod 2 sub-chelate; carpal process knife-shaped, armed with microscopic teeth or setae. Pereopods 3 & 4 distinctly shorter than pereopods 5 & 6. Pereopod 5; basis about 3 x as wide as merus, non-locking but may overlap with P6; articles 3–7 inserted terminally to basis. Pereopod 6; basis wider proximally, about 4 x as wide as merus, not operculate, does not overlap, or lock, with opposing pereopod; articles 3–7 inserted terminally to basis. Pereopod 7 reduced in size with large basis; all articles present; dactylus normal. Uropod 1 with articulated exopoda and endopoda. Uropods 2 & 3; endopoda fused with peduncle. Rami of all uropoda lanceolate, usually with serrated margins. Species. Simorhynchotus antennarius (Claus, 1871). Sexual dimorphism. Apart from the morphology of the mandibles and the antennae, females are more robust than males, especially in the pereon, as is found in Lycaea. In addition, the head of males is produced into a short, slightly pointed rostrum. Remarks. In the past Simorhynchotus has often been placed in the family Oxycephalidae based on the slightly pointed head of males. However, the length of the rostrum is no greater than that found in males of the families Pronoidae or Brachyscelidae, and in general body shape, and especially in the form of gnathopod 2, Simorhynchotus resembles members of the family Lycaeidae. The pereopoda, coxae and urosome are also more like Lycaeids than Oxycephalids. Thus, this genus is a link between the families Lycaeidae and Oxycephalidae. Very little is known about the biology of this genus. It has been recorded from the medusae Geryonia proboscidalis (Laval 1980) and Liriope tetraphylla (Gasca et al. 2014), and Lima & Valentine (2001) record it in the siphonophore Sulculeolaria quadrivalvis, although this may be an accidental inclusion. Simorhynchotus is widely distributed, with a preference for near-surface, tropical waters.
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 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.033 | 0.015 |
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".