Helicochetus (Enghoff, Henrik 2018)
| Notice: | This page is derived from the original publication listed below, whose author(s) should always be credited. Further contributors may edit and improve the content of this page and, consequently, need to be credited as well (see page history). Any assessment of factual correctness requires a careful review of the original article as well as of subsequent contributions.
If you are uncertain whether your planned contribution is correct or not, we suggest that you use the associated discussion page instead of editing the page directly. This page should be cited as follows (rationale):
Citation formats to copy and paste
BibTeX: @article{Enghoff2018EuropeanJournalofTaxonomy394, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Enghoff2018European Journal of Taxonomy394">{{Citation |
Ordo: Spirostreptida
Familia: Odontopygidae
Name
Helicochetus Attems, 1909 – Wikispecies link – Pensoft Profile
- Helicochetus Enghoff, Henrik, 2018, European Journal of Taxonomy 394: 10-11.
Materials Examined
Type species
Discussion
Remarks The material from the Udzungwa Mts includes specimens of two species of Helichochetus. Separate descriptive notes are given for each species, but two characters shared by both species may prove to be genus-characteristic and are therefore commented on here. LIMBUS (Fig. 4A, C, E). Kraus (1960) characterized the limbus of Helichochetus (translated from German): “Limbus divided by rounded indentations into processes which each carry three to six nail-like points. Limbus very broad, ca. 10 × as broad as the processes, with a silky sheen due to the characteristic surface sculpture (exception H. laciniatus)”. The limbus of the two studied species, especially H. mutaba, is indeed very broad (Fig. 4A, C), and the processes and nail-like points agree fully with Kraus’ description. It is not clear from his publications (Kraus 1960, 1966) what he meant by the “characteristic surface structure”. The SEM images (Fig. 4A, C, E) provide no clue. There is, however, another remarkable detail, visible in Fig. 4E: under the limbus proper, there is a “sub-limbus” consisting of rounded, almost semicircular lobes.
Description
CYTOSCUTE DENTICLES (Fig. 4B, D, F). The “cytoscutes”, i.e., cuticular “cells” each corresponding to a hypodermis cell (Fusco et al. 2000) very often carry a row of tiny denticles along one edge. In both studied species of Helicochetus, these denticles are much larger than normal and point away from the cuticular surface rather than lying parallel to it.
Taxon Treatment
- Enghoff, Henrik; 2018: A mountain of millipedes VI. New records, new species, a new genus and a general discussion of Odontopygidae from the Udzungwa Mts, Tanzania (Diplopoda, Spirostreptida, Odontopygidae), European Journal of Taxonomy 394: 10-11. doi
This treatment was originally uploaded by Plazi, compare this treatment on Plazi. Unless this treatment has been substantially changed on Species-ID, Plazi requests to maintain a link back to the original repository.
