Paracortina multisegmentata Stoev & Geoffroy, 2004

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

publication ID

https://dx.doi.org/10.3897/zookeys.1187.113473

publication LSID

lsid:zoobank.org:pub:2F796283-3187-447E-88C6-4B61C50B640C

persistent identifier

https://treatment.plazi.org/id/99D7AC7F-C0C6-5C16-A66B-90FE452515C9

treatment provided by

ZooKeys by Pensoft

scientific name

Paracortina multisegmentata Stoev & Geoffroy, 2004
status

 

Paracortina multisegmentata Stoev & Geoffroy, 2004 View in CoL

Figs 11 View Figure 11 , 12 View Figure 12 , 13 View Figure 13 , 26C View Figure 26 , 28 View Figure 28

Paracortina multisegmentata Stoev & Geoffroy, 2004: 97, figs 9-17; Liu and Tian 2015: 139, key.

Material examined.

1 male paratype, Vietnam, Thanh Hoa Province, Ng ọc Lặc, Moc-Trach Cave , alt. 15 m, 8- 10.12.1929, Colani leg. (BG- NMNHS-INV-000000006261 NMNHS) . Stoev det. April 2004.

Diagnosis.

Unique in having the highest number (81-85) of pleurotergites and gonopods with proximally crossing telopodites, distally bent at 90 degrees.

Descriptive notes.

Species with 81-85 PTs + telson, general colour of conserved specimens pale brownish (Fig. 11A, B View Figure 11 ), head convex, unmodified (Figs 11A View Figure 11 , 12A View Figure 12 ), ~ 40 ommatidia in five or six rows (Fig. 11A View Figure 11 ).

Male sexual characters.

PTs 6 and 7 strongly enlarged, leg-pairs 1 and 2 reduced and more setose than the rest, showing prefemoral and tarsal brushes, leg-pair 2 with the posterior gonopore (Fig. 12A, B View Figure 12 ), leg-pair 7 with a small mesal spine on coxa and a tuft of setae on trochanter (Fig. 26C View Figure 26 ), coxal sacs present on leg-pairs 3-23.

Gonopods (Figs 12B View Figure 12 , 13 View Figure 13 ). Converging, proximally crossing (Fig. 12B View Figure 12 ). Each gonopod with one slender and distally uniformly setose prefemoroidal process (pf1), reaching to overpassing the mid-length of telopodite (Fig. 13 View Figure 13 ); coxa with a mesal rounded lobe (a) connected to a slender falcate mesal process (b), latter reaching mid-length of the telopodite. Telopodite (T) with uniformly slender stem, distally 90 degrees bent laterad (Fig. 12A, B View Figure 12 ), distal part expanding and terminating in two asymmetrical branches (Fig. 13 View Figure 13 ): a shorter horizontally leaf-like subapical process, surmounted by a triangular tooth (k) pointing distolaterad, second branch longer, extending laterad before curving distad, with the apical part terminating in two asymmetrical bulges, the largest accommodating the bifurcated branch with the opening of the solenomere (s) and parasolenomere (ps).

Distribution.

Ngoc-Lac and Loc Thinh, Thanh Hoa, Vietnam (Fig. 28 View Figure 28 ).

Comments.

This species possesses unique characters within the family, not only by having the highest number of pleurotergites but also in being the only species of Paracortinidae with telopodites proximally crossing and their distal part being bent to 90 degrees. This combination of characters could justify the description of a new genus to accommodate the species. However, similar to P. kyrang , until more material becomes available, we refrain from erecting new genera for these two species and leave them in the genus Paracortina until further analyses are available.

Kingdom

Animalia

Phylum

Arthropoda

Class

Diplopoda

Order

Callipodida

Family

Paracortinidae

Genus

Paracortina

Loc

Paracortina multisegmentata Stoev & Geoffroy, 2004

Akkari, Nesrine, Macek, Oliver & Stoev, Pavel 2023
2023
Loc

Paracortina multisegmentata

Stoev & Geoffroy 2004
2004