The first stygobiont species of Coleoptera from Portugal, with a molecular phylogeny of the Siettitia group of genera (Dytiscidae, Hydroporinae, Hydroporini, Siettitiina)

TY - JOUR

T1 - The first stygobiont species of Coleoptera from Portugal, with a molecular phylogeny of the Siettitia group of genera (Dytiscidae, Hydroporinae, Hydroporini, Siettitiina)

AU - Ribera, Ignacio

AU - Reboleira, Ana Sofia

PY - 2019/1/7

Y1 - 2019/1/7

N2 - Iberoporus pluto sp. n., the first stygobiont beetle from Portugal (Dytiscidae, Hydroporinae), is described from a single female from the cave Soprador do Carvalho (Coimbra). The species is highly troglomorphic, depigmented, blind, and with elongated appendages not adapted for swimming. A molecular phylogeny based on a combination of three mitochondrial and two nuclear genes showed the new species to be sister to I. cermenius Castro & Delgado, 2001 from Córdoba (south of Spain), within the subtribe Siettitiina of the tribe Hydroporini. Both species are included in a clade with Siettitia avenionensis Guignot, 1925 (south of France) and Rhithrodytes agnus Foster, 1992 and R. argaensis Fery & Bilton, 1996 (north of Portugal), in turn sister to the rest of species of genus Rhithrodytes Bameul, 1989, in what is here considered the Siettitia group of genera. We resolve the paraphyly of Rhithrodytes by transferring the two Portuguese species to Iberoporus Castro & Delgado, 2001, I. agnus (Foster, 1992), comb. n. and I. argaensis (Fery & Bilton, 1996), comb. n.

AB - Iberoporus pluto sp. n., the first stygobiont beetle from Portugal (Dytiscidae, Hydroporinae), is described from a single female from the cave Soprador do Carvalho (Coimbra). The species is highly troglomorphic, depigmented, blind, and with elongated appendages not adapted for swimming. A molecular phylogeny based on a combination of three mitochondrial and two nuclear genes showed the new species to be sister to I. cermenius Castro & Delgado, 2001 from Córdoba (south of Spain), within the subtribe Siettitiina of the tribe Hydroporini. Both species are included in a clade with Siettitia avenionensis Guignot, 1925 (south of France) and Rhithrodytes agnus Foster, 1992 and R. argaensis Fery & Bilton, 1996 (north of Portugal), in turn sister to the rest of species of genus Rhithrodytes Bameul, 1989, in what is here considered the Siettitia group of genera. We resolve the paraphyly of Rhithrodytes by transferring the two Portuguese species to Iberoporus Castro & Delgado, 2001, I. agnus (Foster, 1992), comb. n. and I. argaensis (Fery & Bilton, 1996), comb. n.

U2 - 10.3897/zookeys.813.29765

DO - 10.3897/zookeys.813.29765

M3 - Journal article

C2 - 30647524

SN - 1313-2989

VL - 813

SP - 21

EP - 38

JO - ZooKeys

JF - ZooKeys

ER -