Epiophlebia, Calvert, 1903
publication ID |
https://doi.org/10.1111/zoj.12258 |
persistent identifier |
https://treatment.plazi.org/id/B512EC37-FFF1-FFA6-824B-F9F7FBDC895F |
treatment provided by |
Felipe (2021-08-28 20:02:10, last updated 2023-11-10 18:40:26) |
scientific name |
Epiophlebia |
status |
|
The prognathous, dorsoventrally flattened head is strongly sclerotized and covered by cuticle knobs ( Fig. 2D View Figure 2 ). Setae are absent. The compound eyes are large and globular, and separated dorsally by slightly more than their own width. An occipital bar as encountered in adult Epiophlebia is absent; the occipital ridge is weakly developed. The eyes are located laterally on the head capsule but are oriented forwards, as the occiput covers the entire posterior side of the head ( Fig. 2B and D View Figure 2 ). A distinct circumoccular ridge is absent; SR-µCT data equally show no internal thickening of the cuticle around the border of the eyes. An epistomal ridge is also absent. The positions of the three ocelli are barely discernible in the SEM images as distinct fields ( Fig. 2 View Figure 2 ). SR-µCT data reveal that nerve tissue for each ocellus is present (Video Clip S5). The coronal and frontal sutures are absent; the vertex area is flat. The post-occiput is a thin semicircle around the occipital foramen, terminating at the posterior tentorial pits. The anteriorly oriented clypeus is divided into a thin anteclypeus that is not covered by cuticle knobs and a postclypeus that is not distinctly separated from the frons. The frons is flat and continuous with the vertex. The gena is formed as an anterior genal process ( Asahina, 1954: plate 55), which is continuous with the ventral part of the occipital area below the eyes ( Fig. 2a View Figure 2 ). A suture or ridge clearly separating the anterior genal processes from the occiput could not be detected. A distinct subgena is also not discernible. The anterior tentorial pits originate just ventral to the anterior mandibular articulation.
Asahina S. 1954. A morphological study of a relic dragonfly Epiophlebia superstes Selys (Odonata, Anisozygoptera). Tokyo: The Japan Society for the Promotion of Science.
Figure 2. Overview of the outer head anatomy of Epiophlebia superstes: A, ventral view with the right part displayed as a three-dimensional reconstruction in order to show the peculiar muscle arrangement of the labial prehensile mask; B, lateral view; C, frontal view; D, dorsal view. Abbreviations: acl, anteclypeus; agp, anterior genal process; antb, antennal base; cl, cleavage line; cr0lb1 + 2, cranial origin of labral muscles 0lb1 and 0lb2; cr0lb5, cranial origin of labral muscle 0lb5; cr0te3, cranial origin of tentorial muscle 0te3; e, eye; fl, flagellum; fr, frons; lbr, labrum; loc, lateral occellus; lp, labial palpus; moc, middle occellus; oc, occiput; ocr, occipital ridge; pcl, postclypeus; pe, pedicellus; prm, prementum; sc, scapus. For muscle references, see text and Table S2. Scale bar: 1 mm.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
Kingdom |
|
Phylum |
|
Class |
|
Order |
|
Family |