Eumillipes persephone Marek, 2021

Marek, Paul E., Buzatto, Bruno A., Shear, William A., Means, Jackson C., Black, Dennis G., Harvey, Mark S. & Rodriguez, Juanita, 2021, The first true millipede- 1306 legs long, Scientific Reports 11 (23126), pp. 1-11 : 1-11

publication ID

https://doi.org/ 10.1038/s41598-021-02447-0

DOI

https://doi.org/10.5281/zenodo.5788798

persistent identifier

https://treatment.plazi.org/id/8705995C-FFB2-FFEE-F2CD-FA9EFA91FEF5

treatment provided by

Valdenar

scientific name

Eumillipes persephone Marek
status

new species

Eumillipes persephone Marek , new species.

http://zoobank.org/NomenclaturalActs/0AFB7037-E517- 4D05-804B-D9AE1C7B3F47

Diagnosis. Adults of Eumillipes persephone canbedifferentiated fromother polyzoniidangenera andspecies (and commonly encountered millipedes co-occurring with E. persephone in Western Australia) based on the combination of the following characters. Body extremely long and thread-like (width: ♂ 0.92 mm; ♀ 0.95 mm; length: ♂ 54.7 mm; ♀ 95.7 mm). Exoskeleton uniformly pale, cream-colored ( Fig. 1A View Figure 1 , Supplementary figs. S6– S8)—with neither dark pigmentation nor longitudinal, nor transverse stripes as in surface-dwelling species (Supplementary Fig. S9). Adult millipedes with an exceptional number of rings and legs: ♀ up to 330 rings and 1,306 legs, and ♂ upto 208 rings and 818 legs (Supplementary tab. S1). Headcone-shaped andeyeless ( Fig. 1C View Figure 1 , Supplementary Fig. S1A–C View Figure 1 )—lacking eyes as are present in surface-dwelling species. Ninth and 10th leg pairs modified into gonopods ( Fig. 1C View Figure 1 , Supplementary figs. S4, S5). Anterior gonopods (9th leg pair) highly modified, not leg like, and distinctly bifurcated into two processes ( Fig. 1C View Figure 1 , Supplementary figs. S4, S5A). Medial process of the anterior gonopods saddle-shaped—not pointed and recurved as in Siphonotus flavomarginatus Attems , 191121. Lateral process sheath-like and cupping the medial process. Posterior gonopods (10th leg pair) stylet-like, and in repose threaded through the bifurcated anterior gonopods ( Fig. 1C View Figure 1 , Supplementary figs. S4, S5B). Sterna of gonopods with four long, slender, curved setae apically studded with spinules (Supplementary figs. S4B, S5A).

Material examined. Male holotype ( WAM T147101 ) GoogleMaps , two female and one male paratypes ( WAM T147100 , T 147124 , T 146684 ), and two juveniles ( WAM T147122 , T147123 ) from Western Australia, ca. 100 km WSW of Norseman, 32° 32′ 05.9" S, 120° 47′ 42.74" E, 27 May–4 August 2020, collected by A.J. Mittra and L.P. Masarei (Western Australian Museum). GoogleMaps

Variation. Males have fewer segments and legs; specimen T 147101 has 198 segments and 778 legs (Supplementary Fig. S7), and T 147100 has 208 segments and 818 legs (Supplementary Fig. S8). Female specimen T 147124 possesses 330 segments and 1,306 legs ( Fig. 1A View Figure 1 , Supplementary Fig. S6), and T 146684 has 253 segments and 998 legs.

Etymology. Te genus is named because it is the first true millipede with more than 1000 legs. Te name Eumillipes is a combination of the Greek eu-, meaning ‘true’; Latin mille, ‘thousand’; and Latin pes, ‘foot’. It is to be treated as a noun. Te species epithet is derived from the Greek mythological goddess of the underworld, Persephone, who was originally from the surface but was taken to the underworld by Hades.

T

Tavera, Department of Geology and Geophysics