Paracortina yinae Liu & Tian, 2015

Akkari, Nesrine, Macek, Oliver & Stoev, Pavel, 2023, A revision of the millipede family Paracortinidae (Diplopoda, Callipodida), ZooKeys 1187, pp. 341-399 : 341

Paracortina yinae Liu & Tian, 2015

Fig. 28

Paracortina yinae Liu & Tian, 2015: 131, figs 23-45.

Diagnosis.

Gonopods very similar to those in Paracortina zhangi . The species, can, however, be recognised by the presence of a spiniform mesal process on coxa 6, and a different shape of the coxa of leg 7 ( Liu and Tian 2015).

Descriptive notes.

(after Liu and Tian 2015) Species with 53-61 PTs + telson, general colour pale brownish yellow, head with a well protruding beak-shaped projection, ommatidia 21-32 in four irregular rows.

Male sexual characters.

Head with a small beak-shaped projection on vertex ( Liu and Tian 2015: fig. 23), PT6 strongly enlarged, leg-pairs 1 and 2 reduced and more setose than the rest, leg-pair 2 with a small anterior process and posterior opening of the gonopores, leg-pair 6 with a small pointed mesal process on coxa, leg-pair 7 with a mesal slender and pointed triangular process and a large rounded projection on coxa ( Liu and Tian 2015: figs 30, 31), coxal sacs noticeable on leg-pairs 3-25.

Gonopods. Parallel, with a general slender aspect. Each gonopod with one prefemoroidal process that is clavate, slender, and setose (pf1), coxa with an anterior lobe and a short falcate mesal process (b) not reaching mid-length of the telopodite. Telopodite (T) broad at the base, gently narrowing distad, distal part dark with a lamella extending in a subtriangular fold, apically blunt and almost rounded, subapically more acuminate and the base slightly uneven, and a short slender bifurcated process, terminating in solenomere (s) and parasolenomere (ps).

Distribution.

Cave I, 24.875732°N, 105.150143°E, Yanchang Village, Tianshengqiao Town, Longlin County, Guangxi, South China (Fig. 28 ).

Comments.

Very similar to P. zhangi (see below), differing mostly in the presence of small, pointed, mesal processes on coxae 6 in males and different shape of the coxa on leg-pair 7 ( Liu and Tian 2015). The gonopods of the two species are strikingly similar but an accurate comparison is virtually impossible as the authors did not illustrate the gonopods in the exact same view.

Figures

Figure 28. Distribution map of Paracortinidae in China and Vietnam.