Cylindroiulus ouridae, Read, 2005

Read, Helen J., 2005, A revision of the Cylindroiulus distinctus Lucas group from north Africa, with descriptions of six new species (Diplopoda, Julida, Julidae), Journal of Natural History 39 (18), pp. 1491-1532 : 1514-1517

Cylindroiulus ouridae sp. n.

( Figures 38–42 , 60, 61 )

Material studied. Holotype: Algeria: „, ANNC. National Park of Djurdjura , Wilaya de Tizi Ouzou, Djebel du Djujura, 1420 m, from pitfall traps in Cedrus atlantica forest, 17 May 1993 ( ZMUC) . Paratypes: 3 „ (1 „ SEM), ANNC, details as above, 17 May 1993 ( ZMUC). Other specimens: 1 „, 1♀, ANNC. National Park of Djurdjura , Wilaya de Tizi

Ouzou, Djebel du Djurdjura, 1420 m. From pitfall traps in Cedrus atlantica forest, 17 May 1993 (MNP).

Total material examined. 6 (5 „).

Diagnosis. A large species with relatively short legs and short accessory claws. Gonopods with mesomerite longer than promerite, large solenomere and brachite and smaller projections X and Y.

Descriptiυe notes. 1 „ (holotype): 50+2, length 36.5 mm, diameter 2.5 mm, 40 ocelli in 10 rows; 1 „: 51+1, diameter 2.4 mm; 1 „: 53+2, ocelli in nine or 10 rows; 1 „: 50+1, diameter 2.8 mm, ocelli in nine or 10 rows; 1 „; 51+1, ocelli in 11 rows ( MNP specimens); 1♀: 49+1, diameter 2.9 mm, ocelli in 11 rows ( MNP specimens) .

Colour. Gingery brown in colour, especially metazonae, with faint mid-dorsal line. (Colour may be the result of pitfall trapping and not true coloration.)

Eyes. Rows sometimes not readable, not greatly reduced.

Telson . Slight dorsal projection in males, pre-anal ring with 7–10 pairs of setae, anal valves with 13–25 setae in almost complete row, ventral scale with two to seven pairs.

Oυerall body shape. Posterior attenuation lacking.

Legs. Legs 0.49 X body height in male, accessory claw surpassing claw by 71% of claw length.

Male sexual characters

Mandibular stipites. Well developed.

First pair of legs. Small hooks.

Segment 7. With gonopods protruding.

Gonopods ( Figures 38–42 , 60, 61 ). Promerite sub-rectangular in shape in anterior view, rather blunt and uneven apically. Flagellum normal. Mesomerite taller and slimmer than promerite. No paracoxal process, high and sharp paracoxal rim. Opisthomerite with large solenomere and brachite joined closely by a thick lamella. Processes X and Y variable in size in the different specimens examined but both large in anterior and posterior view. Y sometimes with serrated or jagged appearance. Brachite sub-rectangular with a mesal tooth in anterior view, from lateral view with part bent dorsally. Phylacum extensive and quite large.

Etymology

Named after Dr Ourida Abrous-Kherbouche who has worked on millipedes in Algeria and collected some of the specimens.

Comments

This species resembles both C. djebelensis and C. jijelensis in the structure of the gonopods but differs in the relative sizes of processes X and Y and the shape of the brachite—the blunt accessory process in this species being reduced to a small tooth. The phylacum is also larger in this species and it is also larger in overall size.

Figures

Figures 38–42. Gonopods of C. ouridae from Algeria, National Park of Djurdjura, Wilaya de Tizi Ouzou, Djebel du Djurdjura. (38) Lateral view. (39) Mesal view. (40) Anterior view. (41) Posterior view. (42) Anterior view of posterior gonopods. Scale bars: 0.1 mm.

Figures 58–61. Scanning electron micrographs of male gonopods. (58) C. attemsi from Algeria, Jijel F. t. de Geurrouch. Anterior and slightly ventral view of posterior gonopods. (59) C. gauthieri from Algeria, Tizi Ouzou Azazga F. t. des Beni-Ghobri lateral and slightly ventral view of posterior gonopods. (60, 61) C. ouridae from Algeria, National Park of Djindjura, Wilaya de Tizi Ouzou, Djebel du Djurdjura. (60) Lateral view of posterior gonopods. (61) Anterior view of posterior gonopods.