Jeekelosoma abadi ( Mauriès, 1985 ) Enghoff & Reboleira, 2019

Enghoff, Henrik & Reboleira, Ana Sofia P. S., 2019, The genus Jeekelosoma Mauriès, 1985 - Moroccan cave millipedes (Diplopoda, Polydesmida, Paradoxosomatidae), European Journal of Taxonomy 523, pp. 1-16 : 3-6

Jeekelosoma abadi ( Mauriès, 1985) comb. nov.

Figs 1–4

Eviulisoma (Jeekelosoma) abadi Mauriès, 1985: 52 , figs 1–13.

Diagnosis

A species of Jeekelosoma with 17 podous rings, with the ozopores borne on mushroomlike peritremata each provided with one macroseta, with a horizontal row of tubercles on podous rings 5-17, and with a terminal curved appendage on the gonopod solenophore.

Material examined

MOROCCO • 2 ♂♂, 5 ♀♀, 1 subad. ♀ TOPOTYPES; Tazouguert , Boudenib, cave Kef Aziza; 31 May 2001; O. Escola leg.; MZB 2003-1386 , MZB 2019-0 0 14 , MZB 2019-0 0 15 , MZB 2019-0 0 16 , MZB 2019-0 0 17 , MZB 2019-0 0 18 , MZB 2019-0 0 19 • 2 ♂♂, 2 ♀♀; same collecting data; NHMD 302019 , NHMD 302020 , NHMD 302021 , NHMD 302022 .

Descriptive notes

Based on studied specimens, to supplement original description ( Mauriès 1985) and to introduce gonopod terminology of Enghoff (2018).

Male SIZE. Body length 10–11 mm, max. width 0.67 mm, 19 ‘segments’ (17 podous rings + 1 apodous ring + telson).

MIDBODY RINGS ( Fig. 2D, F ). Elongated, length of metazona equaling ca ¾ of maximum width. Body extremely narrow in anterior part, maximum width attained a little behind midbody. From there until and including ring 18 (the apodous ring in front of telson) body parallel-sided. Surface of metazona with very pronounced microcellulate structure, borders between cuticular scutes raised. Metazona with diameter increasing towards rear margin and with a clear constriction ca at the middle; posterior margin of rings finely crenulate but without a proper limbus. Each metazona with three rows of short setae borne on distinct tubercles; each row on midbody rings with ca 6 setae; intermediate row situated just behind constriction. A longitudinal row of tubercles on each side of metazona, consisting of a series of ca 5 tubercles in front of constriction plus, in ozopore-less rings, an additional series of ca 5 tubercles behind constriction. Posteriormost tubercles in each row with setae similar to those in transverse rows.

OZOPORES ( Fig. 2G ). On peculiar mushroomlike outgrowths (modified peritremata); each ‘mushroom’ with one long seta behind pore and several minute setae scattered over the surface; outline of ‘mushrooms’ almost circular on anterior part of body, more oval towards the rear.

STERNA. Unmodified, no process on sternum 5, no excavation on sternum 6.

LEGS ( Figs 2E ; 3C–D ). Slender, but femora considerably shorter than body diameter; femora distally swollen. No scopulae.

TELSON ( Fig. 3A–B ). Preanal ring triangular in dorsal view, lateral tubercles indicated by ‘steps’ shortly before the subrectangular tip (epiproct); two transverse rows of setae plus several marginal setae. Anal valves (paraprocts) with raised mesal margin (‘lips’), each with two setae, the ventral one situated slightly closer to the mesal margin than the dorsal one. Subanal scale (hypoproct) trapezoid, with two long marginal setae.

GONOPODAL APERTURE ( Fig. 4A–B, E ). Figure 8 -shaped, almost complete divided in midline by vertical, compressed lobe arising from posterior margin of aperture.

GONOPODS ( Fig. 4 ). Coxa (not visible in Fig. 4 , but see Mauriès 1985: fig. 13) simple, without a distomedial lobe); prefemoral part (prf) less than half as long as acropodite; mesal acropodital process (map, “T” of Mauriès 1985) a simple broad, dorso-ventrally flattened lobe; solenophore (sph, “S” of Mauriès 1985) as long as map, slender, apically dividing into a subrectangular lamella (sph‑a) with distal corners drawn out into long processes, and a terminal slender appendage (app) making a U-turn resulting in its rugose tip pointed towards gonopod base; solenomere (slm) slender, simple, largely concealed within sph.

Female

SIZE. Body length 12 mm, max. width 0.83 mm.

Distribution and habitat Known only from the type locality, the Kef Aziza cave, situated at 03°47′17″ W, 32°01′46″ N, near

Tazzouguert (http://www.openspeleo.org/openspeleo/caves-view-294.html). This cave is also home to other cave-adapted species including the aquatic isopod Magniezia gardei Magniez, 1977 , the palpigrade Eukoenenia maroccana Barranco & Mayoral, 2008 , the spider Dysdera caeca Ribera, 1993 , the ground beetle Platyderus insignitus presahariensis Lagar, 1978 , the rove beetle Apteranillus ruei Español, 1969 , the darkling beetle Scaurus tingitanus gimeli Antoine, 1953 , and the weevil Torneuma troglodytis Stüben, 2009 ( Antoine 1953; Español 1969; Magniez 1977; Lagar 1978; Ribera 1993; Barranco & Mayoral 2008; Stüben 2009).

Figures

Fig. 1. Jeekelosoma abadi (Mauriès, 1985) comb. nov., living specimen from the type locality. Courtesy of Carles Hernando.

Fig. 2. Jeekelosoma abadi (Mauriès, 1985) comb. nov., topotypes. A–C. Female (NHMD 302022). D–G. Male (NHMD 302021). A. Head and body rings 1–5, lateral view. B. Head and collum, frontal view. C. Body rings 8–10 and posterior half of ring 7, seen from the right. D. Rings 10–11, seen from the left. E. Ring 11 and legs, posterior view. F. Rings 10–11, dorsal view. G. Ozopore from ring 18, right side (anterior to the right). Scale bars: A–F = 0.2 mm; G = 0.02 mm.

Fig. 3. Jeekelosoma abadi (Mauriès, 1985) comb. nov., male topotype (NHMD 302021). A. Penultimate ring (podous), ultimate ring (apodous) and telson, oblique lateral view. B. Telson, posterior view. C. Midbody leg. D. Claw of midbody leg. Scale bars: A–C = 0.1 mm; D = 0.01 mm.

Fig. 4. Jeekelosoma abadi (Mauriès, 1985) comb. nov., male topotype (NHMD 302021), left gonopod in situ. A. Ventral view. B. Slightly meso-ventral view to show the keel a. C. Subapical view. D. Lateral view. E. Mesal view. Abbreviations: a = posterior-median keel of gonopod aperture; app = terminal appendage of solenophore; map = mesal acropodital process; prf = prefemoral part; slm = solenomere; sph = solenophore; sph‑a = apical lamella of solenophore. Scale bars: A–B, D–E = 0.05 mm; C = 0.01 mm.

Fig. 8. Jeekelosoma heptarachne sp. nov., holotype, male (MZB 73-2849), left gonopod. Scale bar = 0.1 mm.