Campodesmus alobatus, Vandenspiegel & Golovatch & Fiemapong, 2015

Vandenspiegel, D., Golovatch, S. I. & Fiemapong, A. R. Nzoko, 2015, Two new species, including one representing a new genus, of the West African millipede family Campodesmidae (Diplopoda: Polydesmida), European Journal of Taxonomy 139, pp. 1-11 : 6-10

publication ID 10.5852/ejt.2015.139

publication LSID


persistent identifier

taxon LSID

treatment provided by


scientific name

Campodesmus alobatus

sp. nov.

Campodesmus alobatus sp. nov.

Figs 4–6 View Fig View Fig View Fig


Differs from other members of the genus in the complete lack of a parabasal process/lobe on the gonopod telopodite which is not directed mesally, but held subparallel to the main body axis, coupled with much more numerous, nearly undifferentiated and low tubercles on metaterga and the presence of deeply incised and clearly separated antero- and caudolateral lobulations on the postcollum paranota.


The name of this species emphasizes the absence of a dorsal/lateral parabasal process/lobe from the gonopod telopodite.

Material examined


IVORY COAST: ♂, Appouesso , N 06°35’, W 003°28’, Forêt Classée Bossematié, station 5A, pitfall trapping, 30 Nov. 1994, leg. R. Jocqué & N. Séabé, MRAC 17.264 View Materials .



IVORY COAST: 1 ♂, same locality, station 1A, 31 Oct. 1994, MRAC 17.272; 1 ♂, same locality, station 5B, 30 Oct. 1994, MRAC 17.276; 1 ♂ ( SEM) and 1 ♂, same locality, 31 Oct. 1994, MRAC 17.278; 1 ♂, same locality, station 5D, 31 Oct. 1994, ZMUM ρ2665. All leg. R. Jocqué & N. Séabé.


Length of holotype c. 17 mm, width on midbody pro- and metazonae 1.7 and 3.6 mm, respectively. Paratypes (males) also c. 17 mm long, width on midbody pro- and metazonae 1.6–1.7 and 3.0 mm, respectively. Coloration from light grey-brown to brown ( Fig. 4 View Fig ); clypeolabral region, antennae, prozonae, venter, legs and tip of epiproct pallid to light yellow; stricture as brown as metazonae.

HEAD. Densely setose, clypeolabral region smooth, remaining parts densely microdenticulate-

microgranulate, interantennal isthmus c. 1.5 times as broad as diameter of antennal socket. Antennae short and strongly clavate, C-shaped, antennomere 5 largest and longest, but only a little larger than 6 th, both with a dorso-apical group of tiny bacilliform sensilla; apical segment with usual four sensory cones ( Figs 4 View Fig , 5G View Fig ).

BODY. With 20 segments (male). In width, head << collum = segment 2 <3 <4 <5–17; thereafter body rapidly tapering towards telson. Collum transversely ellipsoid, subflabellate, covering most of head from above, dorsal surface rather regularly and densely tuberculate, with about 4–5 transverse rows of round, setigerous, undifferentiated tubercles lying between a moderately crenulate/lobulate and regularly rounded anterior margin and a clearly ribbed and almost straight caudal edge; small, but discernible caudal paranota with a rather sharp lateral tooth ( Figs 4 View Fig , 5A, D, G View Fig ). Prozonae smooth and poorly shining, stricture finely microgranulate; metazonae dull, densely tuberculate and microgranulate over entire surface; cerotegument well-developed, sometimes in places clothed with a crust of soil; dorsal surface usually with two regular, mixostictic (= not regularly longitudinal) transverse rows of normally similar round tubercles, much like on collum, lying between a fore row of denser and smaller knobs/tubercles behind stricture and a densely ribbed caudal edge represented by a flatter row of oblong tubercules ( Fig. 5 View Fig A–F). Paranota 2 not enlarged compared to following ones ( Figs 4 View Fig , 5A View Fig ). Postcollum paranota set rather low (at about half of midbody height, thus dorsum being very strongly convex), strongly declivous, continuing the outline of dorsum, but their tips not reaching level of venter ( Fig. 5 View Fig A–C, J); lateral margin of paranota usually 5-lobulate, laterals continuing into even more deeply lobulate caudo- and anterolaterals both at caudal and fore margin, respectively; caudo- and anterolateral lobulations continuing both caudal and fore rows of tubercles at base of paranota, respectively ( Figs 4 View Fig , 5 View Fig A–I). Caudal corner of paranota increasingly strongly inclined caudad behind rear tergal margin only in segments 17–19 ( Fig. 5C, F, I View Fig ). Tergal setae very short and thin ( Fig. 5 View Fig A–L). Ozopores inconspicuous, opening flush on tergal surface at about midlength of paranota 5 and 7 off lateral margin. Pleurosternal carinae absent ( Fig. 5G View Fig ). Limbus microcrenulate, with microserrate tips of crenulations, these latter clearly separated from one another ( Fig. 5M View Fig ). Epiproct short, small, subtruncate, slightly flattened dorsoventrally, tuberculate dorsally, with a pair of rather large subapical papillae ( Figs 4 View Fig , 5C, F, I View Fig ). Hypoproct nearly semi-circular with 1 + 1 caudal setae very distinctly separated and borne on minute knobs ( Fig. 5I View Fig ).

STERNA. Broad, almost twice as broad as coxa length, with a very deep axial impression ( Fig. 5 View Fig G–I). Gonapophysis on male coxae 2 a small tubercle. Legs short, even in male about 0.9–1.0 times as long as midbody height, very slender; in length, femur> tarsus> prefemur> postfemur = tibia = coxa; claw very small, very slightly curved; ventral surface of tarsi densely setose, but forming no brushes.

GONOPOD. Aperture transversely ovoid, large, its lateral and posterior edges slightly elevated, fully concealing gonocoxae and bases of telopodites. Gonopod coxites medium-sized, subcylindrical, fused at base to a small membranous sternal remnant, each with only one long distodorsal seta ( Fig. 6A, B View Fig ). Cannulae long and slender, without peculiarities. Telopodites rather regularly curved caudad, in situ held subparallel to each other, subcircular, long, slender and quite simple ( Fig. 6 View Fig ). Prefemoral (= densely setose) portion (pf) subcylindrical, rather long, totally devoid of outgrowths. Femorite (fe) with a small parabasal denticle (d) on ventral face and a series of inconspicuous folds (f) on opposite side. Seminal groove (sg) running entirely on mesal side, terminating at about halfway along fe, at base of a small denticle (o), with neither a hairpad nor an accessory seminal chamber. Tip of fe slightly broadened and bifid ( Fig. 6C View Fig ).


The species described above is the 8 th known species of Campodesmus which, despite the peculiarities referred to in the diagnosis, remains a rather typical congener. This is primarily evidenced by the gonopod conformation which shows long and subcircular telopodites. Such non-gonopod characters as low paranota, a reduced pore formula, short antennae and legs etc. also attest to the unequivocal assignment of this new species to Campodesmus (cf. Hoffman 1951; Schiøtz 1966; Demange 1971).

The clearly abbreviated seminal groove in C. alobatus sp. nov., which only extends to about the midlength of an untwisted gonopod femorite, invites comparisons with other congeners. Regrettably, no such information is available in the literature. Schiøtz (1966) attempted to group most of the species of Campodesmus , but more data are needed, including the course of the seminal groove, to reach more secure conclusions.


Musée Royal de l’Afrique Centrale


Zoological Museum, University of Amoy


Departamento de Geologia, Universidad de Chile

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF