Cylindroiulus attemsi, 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 : 1502-1505

Cylindroiulus attemsi sp. n.

( Figures 16–20 , 58 )

Cylindroiulus (Phallaioiulus) distinctus: Attems 1927: 207 .

Material studied. HOLOTYPE: Algeria: „, Bona 1869, F. Meinert leg. ( ZMUC) . PARATYPES: Algeria: 2 „ (1 „ SEM), 3 juvenile „ , 19♀. 1 „, Jijel F. t. de Guerrouch, 4 November 1984, 900 m, collected by the MRSN Spedizione ‘‘ Algeria’ 84’’ Boffa, Casale, Cavazzuti, Gavetti, Giachino, Levi ( MRSN); 2 „, 9 juvenile „ , 15♀, data as above ( MRSN); 1 „, 5♀, Jijel F. t. de Guerrouch, 10 November 1984, 900 m, collected by the MRSN Spedizione ‘‘Algeria’84’’ Boffa, Casale, Cavazzuti, Gavetti, Giachino, Levi ( MRSN); 1 „, Philippeville, 1893, F. Werner (specimen described by Attems in 1927) ( NMW) .

Total material examined. 59 (8 „).

Diagnosis. Large species, darker dorsally. Gonopods with distinctive saw-like brachite. Solenomere and brachite linked by lamella. Projection Y small, X absent.

Descriptiυe notes. Length 31–39 mm („) to 52 mm (♀); maximum vertical diameter 2.2– 3.0 mm („) to 4.2 (♀); number of podous rings 44–48 („), 52 (♀).

Colour. Head, first six segments, telson and anal valves chestnut brown, trunk pale chestnut below repugnatorial glands, glaucous above. Metazonae brownish, prozonae bluish. Thin black mid-dorsal line, sometimes broken.

Eyes. Clearly readable, hardly reduced, except the specimen described by Attems which are a little muddled. Males with 8–11 rows, females up to 12.

Telson . Mature males with slightly protruding dorsal projection, others without. Preanal ring with 5–14 pairs of setae usually in a single row. Ventral scale usually with two to four setae but males and occasional females with up to 20. Anal valves usually with single row of approximately 10–15 pairs of setae, those in Meinert’s collection often with more.

Oυerall body shape. As C. distinctus . Metazonal vaulting slight, striae close and even.

Legs. Legs 0.55 X body height in males, accessory claw surpassing claw by 100% of claw length.

Male sexual characters

Mandibular stipites. Smoothly expanded.

First pair of legs. Small, sharp hook.

Segment 7. Wide opening.

Gonopods ( Figures 16–20 , 58 ). Promerite long and narrow in lateral view, bluntly pointed in anterior view. Flagellum normal. Mesomerite simple, shorter than promerite and fitting snuggly against it. Paracoxal process absent, paracoxal rim quite high but not extensive. Solenomere appearing to have a 90 ° bend laterally and subapically, ending in rounded knob. Small phylacum on posterior surface. Brachite narrow, curved, saw-like and lamellal, not hood-like. Dorsally to it, another projection slightly smaller in size, probably equivalent to Y. Thin lamella connecting solenomere to brachite seen best in lateral view.

Female sexual characters

Operculum in one specimen examined was rather swollen.

Etymology

Named after Carl Attems who made the original description of this species. Comments

The specimens examined clearly fit the illustrations of the anterior view of the posterior gonopods illustrated by Attems.

Figures

Figure 16–20. Gonopods of male C. attemsi from Algeria, Jijel F. t. de Guerrouch. (16) Lateral view. (17) Mesal view. (18) Posterior view. (19) Anterior view. (20) 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.