Eustrongylosoma liklik, Golovatch, Sergei I. & Stoev, Pavel, 2011

Golovatch, Sergei I. & Stoev, Pavel, 2011, Review of the millipede genus Eustrongylosoma Silvestri, 1896 in the island of New Guinea, with descriptions of nine new species (Diplopoda, Polydesmida, Paradoxosomatidae), International Journal of Myriapodology 5, pp. 1-26 : 13-15

Eustrongylosoma liklik sp. n. Figs 41-47

Type material.

Holotype♂(NMNHS),Papua New Guinea, West Sepik Province, Telefomin, 1700 m, 19 October 1975, B.S.E. (leg. P. Beron).

Name.

“liklik” means “small” or “little” in Pidgin English. A noun in apposition.

Diagnosis.

Distinguished by the small size, coupled with the short legs, the poorly developed paraterga and the contrasting infuscate distal antenno- and podomeres (see also Key below).

Description.

Length ca 15 mm, width of pro- and metazona 1.2 and 1.4 mm, respectively. Coloration uniformly light yellowish, with distal antennomeres, as well as tibiae and, especially, tarsi contrasting dark brown.

In width, head < collum = segments 3 = 4 < 2 < 5-16. Head densely setose, only vertex bare. Antennae rather short, slightly clavate, reaching beyond segment 2 dorsally; antennomere 6 longer than 2nd. Collum transversely oval, lateral flaps small, regularly and broadly rounded. Tegument generally smooth and shining, only below paraterga faintly microgranulate; rear halves of metaterga sometimes faintly rugulose. Paraterga of postcollum segments poorly developed (Figs 41, 42), especially weak in poreless segments, set low (at about 1/2 midbody height), sometimes with only a faint undulation in front of ozopore near caudal third, slightly more evident in segments 2 and 3, but even paraterga 2 and 3 with both anterolateral and caudal corners rounded. Caudal corners of postcollum paraterga never extended beyond rear tergal margin. Lateral calluses of paraterga always narrow, delimited by a sulcus dorsally, in most of pore-bearing segments ventrally in caudal 1/4 as well. Ozopores lateral, superficial. Tergal setae fully abraded, setation pattern vague. Axial line wanting. Transverse sulcus on metaterga rather superficial, incomplete, far from reaching bases of paraterga, visible on metaterga 5-17, barely traceable on 18th. Stricture between pro- and metazona rather faintly striolate. Pleurosternal carinae small, complete in segments 2-4, a caudal denticle retained also in segments 5-7, thereafter entirely missing. Epiproct (Fig. 43) short, flattened dorsoventrally, digitiform; apical papillae small, tip narrowly subtrun cate; subapical papillae very small, well removed from tip. Hypoproct (Fig. 44) subtrapeziform, setigerous paramedian knobs at caudal margin well-separated and very small.

Sterna rather sparsely setose; a rather high, linguiform, roundly subtriangular, ventral, setose lamina only between coxae 4 (Fig. 45). Legs short, midbody ones ca 1.0-1.1 times longer than body height, apparently somewhat incrassate and longer compared to ♀; ♂evident tarsal brushes increasingly well reduced towards legs of segment 19.

Gonopods as in Figs 46 & 47. Distal half of solenophore split into a lateral lobe (k) and a narrowly bifid larger branch (j). Femorite with a large, rounded, apicolateral lobe (l).