Cyamus monodontis Lutken 1870
Cyamus monodontis Lütken, 1870 (Figures 1 and 2) Cyamus monodontis Lütken, 1870: 279. – Lütken 1873: 282. – Leung 1967: 285, fig. 4c. – Lincoln and Hurley 1974b: 68. – Leung 1976: 160. – Berzin and Vlasova 1982: 157, 158. – Margolis and Arai 1989: 12. – Haney 1999: 124–128, figs 47–49. – Martin and...
| Main Authors: | , , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
Zenodo
2017
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| Subjects: | |
| Online Access: | https://doi.org/10.5281/zenodo.10530469 http://treatment.plazi.org/id/03FC878BFFD8FFE1FE55FC535645FEB5 |
| Summary: | Cyamus monodontis Lütken, 1870 (Figures 1 and 2) Cyamus monodontis Lütken, 1870: 279. – Lütken 1873: 282. – Leung 1967: 285, fig. 4c. – Lincoln and Hurley 1974b: 68. – Leung 1976: 160. – Berzin and Vlasova 1982: 157, 158. – Margolis and Arai 1989: 12. – Haney 1999: 124–128, figs 47–49. – Martin and Heyning 1999: 28. Cyamus (Cyamus) monodontis – Margolis et al . 2000: 71–74, fig. 4. Material examined (host Monodon monoceros) Lectotype . One male, 9.4 mm, Greenland, ZMUC-CRU-8685. Paralectotypes: four males, 8.5– 9.3 mm, Greenland, ZMUC CRU- 467. Allotype: one female, 7.2 mm, Thule, Greenland, ZMUC CRU-8686. Other non-type material: one female, 5.4 mm, Greenland, ZMUC CRU-7641; three males, 5.2–7.2 mm, 3 females, 7.1–7.8 mm, Thule, Greenland, ZMUC CRU-8570. Hosts Monodon monoceros, Delphinapterus leucas (Pallas). Diagnosis Pereonite 2 without knoblike process on the posterior margin. Lateral gills stout, uniramous; male accessory gills asymmetrically bilobed, anterior lobe shortest, female accessory gills oval. Pereonite 5 smooth, male pereonites 6 and 7 with two pairs of acute ventral processes, female P6 with three pairs and P7 with one pair of acute ventral processes. Redescription Lectotype, male, 9.4 mm, ZMUC CRU-8685. Body compact and dorso-ventrally depressed. Eyes small and ovoid. Head quadrangular, partially fused with pereonite 1; lateral incision between head and pereonite 1 absent. Pereonite 1 with lateral expansion. Pereonite 2 with squared process on posterolateral margin. Pereonites 3 and 4 shorter in length than pereonites 1, 2 and 5–7, subequal in width to pereonite 5, with terminal posterior projections, without pereopods, each bearing one pair of gills and one accessory gill. Pereonite 5 smooth. Pereonites 6 and 7 each bearing two pairs of acute ventral processes (ventral spines), the first pair antero-directed, the second, latero-directed. Pereonite 7 triangular. Penes large, stout (Figure 1). Antenna 1 long, with 4 articles, terminal article narrow and long, bearing apical tuft of setae, and ... |
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