Arthrosolaenomeris iara, Bouzan & Iniesta & Brescovit, 2021

Bouzan, Rodrigo Salvador, Iniesta, Luiz Felipe M. & Brescovit, Antonio Domingos, 2021, Cladistic analysis and taxonomic review of the millipede tribe Arthrosolaenomeridini Hoffman, 1976 (Polydesmida: Chelodesmidae), Zootaxa 4970 (2), pp. 201-256 : 220-221

publication ID

https://doi.org/10.11646/zootaxa.4970.2.1

publication LSID

lsid:zoobank.org:pub:6DBA0C02-9E52-4FD0-8B48-8C7B405713A8

DOI

https://doi.org/10.5281/zenodo.4895139

persistent identifier

https://treatment.plazi.org/id/AEBF860A-7309-4E68-BE80-F2A27710CDD0

taxon LSID

lsid:zoobank.org:act:AEBF860A-7309-4E68-BE80-F2A27710CDD0

treatment provided by

Plazi

scientific name

Arthrosolaenomeris iara
status

n. sp.

Arthrosolaenomeris iara n. sp.

Figures 9 View FIGURE 9 , 10G–H View FIGURE 10 , 11 View FIGURE 11

urn:lsid:zoobank.org:act:AEBF860A-7309-4E68-BE80-F2A27710CDD0

Type material. Male holotype from Usina Hidrelétrica Guaporé , Vale São Domingos and Pontes de Lacerda (15°11’60”S, 59°22’00”W), Mato Grosso, Brazil, 03.X.2002, G. Marçal coll., deposited in IBSP 1577 View Materials GoogleMaps . Paratypes: one male and one female from Chapada dos Parecis, Diamantino (14°09’43”S, 57°08’01”W), Mato Grosso, Brazil, XI.1993, D. Novais and R GoogleMaps . Pardini coll., deposited in IBSP 7537 View Materials .

Additional material. BRAZIL: Mato Grosso: Vila Bela da Santíssima Trindade (15°00’00”S, 59°57’00”W), Fazenda Barranco Alto , 4♂, 2♀ and one juvenile, 14.XI.2015, A. Chagas-Jr and A.B. Kury coll. ( CZUFMT 841 ); GoogleMaps Porto Esperidião (15°51’11”S, 58°27’36”W), 1♂, 18–22.XII.1976, P.E. Vanzolini coll. ( MZSP 1081 View Materials ) GoogleMaps .

Diagnosis. Adult males differ from all other species of the genus by the absence of the secondary process in the prefemoral process ( Fig. 9D View FIGURE 9 ).

Description. Male (Holotype, IBSP 1577). Coloration (long-preserved in 70% ethanol): Head and antennae ochre with the seventh antennomere darker. Body ocher and paranota tip with the same color as the body ( Figs 9A– C View FIGURE 9 ). Legs ocher whitish. Telson ocher. Total length: 68.40. Total width: 10.13mm. Collum 2.93 length, 9.89 width. Antennomere lengths (1>7): 0.77; 2.12; 1.93; 1.62; 1.70; 1.49; 0.44. Podomeres lengths (1>7): 1.24; 1.70; 2.64; 1.51; 1.96; 2.00; 0.56. Gonopod aperture 2.13 length, 3.83 width. Telson 1.43 length. Gonopod: 2.92 length, 2.90 width. Gonocoxae: 1.18 length, 1.50 width. Telopodite: 2.92 length, 1.48 width. Prefemoral region 1/3 the size of telopodite. Prefemoral process long and acute, starting from an angle of 180°, ascending parallel to the solenomere and partially covering it in mesal view ( Fig. 9D View FIGURE 9 ). Solenomere long, wide in the middle zone due to the presence of the cingulum and narrowing at the apex ( Fig. 9F View FIGURE 9 ). Cingulum in medial position ( Fig. 9F View FIGURE 9 ). Apex of the solenomere abruptly descending ( Fig. 9D View FIGURE 9 ).

Female (paratype, IBSP 7537). Body as in male, except for sternites with triangular projections, legs showing dorsal projections not conspicuous and without granules. Total length: 69.42. Total width: 9.49. Collum 3.15 length, 8.82 width. Antennomere lengths (1>7): 0.73; 1.95; 1,45; 1.30; 1.35; 1.22; 0.35. Podomeres lengths (1>7): 0.83; 1.06; 2.06; 1.04; 1.44; 1.50; 0.46. Telson 1.46 length. Epigyne rounded with irregular edges. Vulvae ( Figs 10G–H View FIGURE 10 ): 1.42 length, 0.67 width. External valve: 1.01 length, 0.30 width. Internal valve: 0.99 length, 0.28 width. Operculum: 0.44 length, 0.54 width.

Distribution. Mato Grosso, Brazil ( Fig. 11 View FIGURE 11 ).

Etymology. The species epithet is a reference of the Brazilian folkloric character “Iara”. According to the indigenous legend, Iara is a beautiful mermaid that inhabits the rivers of the north of the country. Noun in apposition.

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Departamento de Geologia, Universidad de Chile