identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03C2231DAB3DFFD51083F9E3FEBE227C.text	03C2231DAB3DFFD51083F9E3FEBE227C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lithobius forficatus (Lithobiomorpha) Linnaeus 1758	<div><p>L. forficatus (Lithobiomorpha)</p> <p>In L. forficatus somewhat similar interommatidial exocrine glands can be found. However, they differ from the type described above by forming clusters of two or three glandular units. Secondly, there is no evidence for the existence of an intermediary cell and, therefore, every glandular unit includes only two different cell types, a proximal secretory gland cell and a distal canal cell (Fig. 1B).</p> <p>Secretory gland cell</p> <p>Secretory gland cells, varying in number from one to three, can be observed in the proximal regions of several interommatidial triangles always made up by three surrounding ommatidia. However, a consistent arrangement was not apparent. The number of secretory gland cells apparently depends on their position within the Lithobius - eye, whereas the clustered ones seem to be limited to the central region.</p> <p>Each secretory gland cell is similarly drop-shaped as in S. coleoptrata. Its voluminous part is located most proximally, reaching the level of the nuclei of the proximal retinula cells. The small kidney-shaped nucleus is also located at this level. The rather electrondense cytoplasm is enriched by dictyosomes, small osmiophilic vesicles, and an often circularly arranged rough ER (Fig. 4A). The lobe of the cell decreases continuously in volume, leading to distal regions, and usually contains a peripherally displaced rough ER, dictyosomes, and large, electron-dense and seemingly coalesced vesicles. The deeply infolded cell apex surrounds the basal lobe of the canal cell, which houses a small, cuticular duct (Fig. 4B).</p> <p>A wide extracellular cavity could, however, not be determined. Distally the secretory gland cell is increasingly ensheathed by numerous thin processes of the interommatidial pigment cells (covering cells).</p> <p>Canal cell</p> <p>Up to three clustered canal cells are noticeable in a triangular space surrounded by three ommatidia (see fig. 4C). No regular pattern was apparent here either, but eye glands located in more marginal areas show mostly only a single canal cell.</p> <p>The formation of a common cuticular duct, the occurrence of thin apical infoldings surrounding the cuticular duct, the cytoplasmic consistency, its content of organelles, its shape, as well as the proximal position of the nucleus, closely resemble the situation described above for the canal cells of S. coleoptrata (Fig. 4D). The proximal part of the canal cell envelopes, as well as penetrates, the apex of at least one secretory gland cell (Fig. 4B). The oblong nucleus lies beneath the transition zone of the distal and proximal retinula cells.</p> </div>	https://treatment.plazi.org/id/03C2231DAB3DFFD51083F9E3FEBE227C	Public Domain	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.		Pensoft via Plazi	Müller, C. H. G.;Rosenberg, J.;Meyer-Rochow, V. B.	Müller, C. H. G., Rosenberg, J., Meyer-Rochow, V. B. (2003): Hitherto undescribed interommatidial exocrine glands in Chilopoda. African Invertebrates 44 (1): 185-198, DOI: 10.5281/zenodo.7666458
