Sechelleptus Mauriès, 1980

Vandenspiegel, Didier, Henrard, Arnaud & Mathys, Aurore, 2021, Sechelleptus arborivagus sp. nov., a new arboreal spirostreptid millipede (Diplopoda, Spirostreptidae) endemic to Mayotte Island (Comoros Archipelago), Indian Ocean, European Journal of Taxonomy 755 (1), pp. 1-21 : 6-7

Genus Sechelleptus Mauriès, 1980

Sechelleptus Mauriès, 1980: 147 .

Rubanostreptus Krabbe, 1982: 183 , synonymized by Golovatch & Korsós (1992).

Sechelleptus – Golovatch & Korsós 1992: 24.

Type species

Iulus seychellarum Desjardins, 1835

Diagnosis (adapted from Mauriès 1980 and Golovatch & Korsós 1992)

A genus of moderate to large spirostreptid millipedes (up to 120 mm long) characterized by the rather simple gonocoxite and the long, slender, ribbon-shaped gonotelopodite with a spine arising well distad of the knee and a small free solenomerite arising just near the apex.

Distribution

Tanzania, Zanzibar, Comoros archipelago, Seychelles, Madagascar, Mauritius.

Species included (adapted from Millibase: Sierwald & Spelda 2021)

Sechelleptus aberrans (Brölemann, 1923) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1044974 S. anulatus (Attems, 1914) ; http://www.millibase.org/aphia.php?p=taxdetails&id=999985

S. argus (Attems, 1896) ; http://www.millibase.org/aphia.php?p=taxdetails&id=998239

S. betaminena (De Saussure & Zehntner, 1902) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1044975 S. confusus (Attems, 1950) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1044977

S. coriaceus (De Saussure & Zehntner, 1901) ; http://www.millibase.org/aphia.php?p=taxdetails&id=998243 S. dauphini (De Saussure & Zehntner, 1902) ; http://www.millibase.org/aphia.php?p=taxdetails&id=998244 S. fulgens (De Saussure & Zehntner, 1901) ; http://www.millibase.org/aphia.php?p=taxdetails&id=998237 S. gonospinosus (Atems, 1910) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1044978

S. kalobaptus (Attems, 1914) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1044979

S. krabbae Jeekel, 1999 ; http://www.millibase.org/aphia.php?p=taxdetails&id=940073

S. lambertoni (Brölemann, 1923) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1155959

S. lobifer (Attems, 1951) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1044980

S. macilentus (De Saussure & Zehntner, 1897) ; http://www.millibase.org/aphia.php?p=taxdetails&id=998247 S. metazonalis (De Saussure & Zehntner, 1901) ; http://www.millibase.org/aphia.php?p=taxdetails&id=998238 S. moramangae (De Saussure & Zehntner, 1897) ; http://www.millibase.org/aphia.php?p=taxdetails&id=998249 S. multiporus (Attems, 1951) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1246528

S. nigritus (De Saussure & Zehntner, 1897) ; http://www.millibase.org/aphia.php?p=taxdetails&id=998250 S. obscuratus (Attems, 1914) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1248577

S. obscurus (Attems, 1951) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1248590

S. piesthopygus (Attems, 1914) ; http://www.millibase.org/aphia.php?p=taxdetails&id=999987

S. praepolitus (Attems, 1910) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1248594

S. procerus (Attems, 1951) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1249715

S. punctatulus (Attems, 1910) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1249718

S. pyrhozonus (Gerstäcker, 1873) ; http://www.millibase.org/aphia.php?p=taxdetails&id=998242

S. scabricollis (De Saussure & Zehntner, 1897) ; http://www.millibase.org/aphia.php?p=taxdetails&id=998252 S. seychellarum ( Desjardins, 1835) ; http://www.millibase.org/aphia.php?p=taxdetails&id=947475

S. speculorbis (Attems, 1910) ; http://www.millibase.org/aphia.php?p=taxdetails&id=1249894

S. sulcicollis (De Saussure & Zehntner, 1897) ; http://www.millibase.org/aphia.php?p=taxdetails&id=999880 S. unilineatus Golovatch & Korsós, 1992 ; http://www.millibase.org/aphia.php?p=taxdetails&id=940074 S. variabilis VandenSpiegel & Golovatch, 2007 ; http://www.millibase.org/aphia.php?p=taxdetails&id=1024527 S. arborivagus sp. nov.

Key to species of Sechelleptus

Waiting a complete revision work of the genus, only the following additional lines to the key of Jeekel (1999) is given here:

22. Metaplica (posterior blade) with a small latero-distal uncus. Number of body rings 49–52, width 7.0–8.0 mm ........................................................... S. sulcicollis (De Saussure & Zehntner, 1897)

– Metaplica without latero-distal uncus. Number of body rings usually higher .........................22A

22A. Metaplica simply widened. Number of body rings 59, width 12.0 mm ......................................... ............................................................................. S. macilentus (De Saussure & Zehntner, 1897)

– Metaplica widened and a little higher than proplica (anterior blade) .......................................22B

22B. Proplica with a lateral finger-shaped lobe. Number of body rings 50–60, width 3.0–5.0 mm ....... ............................................................................. S. variabilis VandenSpiegel & Golovatch, 2007

– Proplica ending apically in a more or less spiniform mesapical projection. Number of body rings 57–62, width 7.0–9.0 mm .......................................................................... S. arborivagus sp. nov.