Lacronia
{{Short description|Genus of harvestmen/daddy longlegs}}
{{Automatic taxobox
| image = Lacronia ceci PARNASO 100 dpi.jpg
| image_caption = Lacronia ceci from Brazil
| taxon = Lacronia
| authority = Strand, 1942
| synonyms = *Luederwaldtia Mello-Leitão, 1923
}}
Lacronia is a genus of South American harvestmen, which includes five Brazilian species. A striking diagnostic character is the trochanter IV of male with strong medial prolateral apophysis forming a pincer with the dorso-apical apophysis of coxa IV.{{Cite journal |last=Carvalho |first=Rafael N. |last2=Kury |first2=Adriano B. |date=2024-08-20 |title=Filling a geographic gap: a new species of genus Lacronia Strand, 1942 (Opiliones, Gonyleptidae) from southern Brazil |url=https://www.mapress.com/zt/article/view/zootaxa.5496.3.7 |journal=Zootaxa |language=en |volume=5496 |issue=3 |pages=417–428 |doi=10.11646/zootaxa.5496.3.7 |issn=1175-5334}}
Taxonomic history
This genus was at first named Luederwaldtia by Mello-Leitão in 1923,{{Cite journal |last=Mello-Leitão |first=C. F. |date=1923 |title=Arachnideos da Ilha dos Alcatrazes |journal=Revista do Museu Paulista |volume=13 |pages=515–520}} but the name was already preoccupied, being a junior homonym of Luederwaldtia Schmidt, 1922 (Hemiptera). Strand proposed the valid replacement name Lacronia,{{Cite journal |last=Strand |first=E. |date=1942 |title=Miscellanea nomenclatoria zoologica et Paleontologica X |journal=Folia Zoologica et Hydrobiologica |volume=11 |pages=386–402}} which was ignored by most subsequent authors and unearthed only 60 years later.{{Cite journal |last=Kury |first=A. B. |date=2003 |title=Annotated catalogue of the Laniatores of the New World (Arachnida, Opiliones) |journal=Revista Ibérica de Aracnología, volumen especial monográfico |volume=1 |pages=1-337}}
Species
- Lacronia camboriu (Kury, 2003) – Santa Catarina
- Lacronia ceci (Kury & Orrico, 2006) – Rio de Janeiro
- Lacronia ricardoi (Kury, 2003) – São Paulo
- Lacronia serripes (Mello-Leitão, 1923) – São Paulo
- Lacronia utaru (Carvalho & Kury, 2024) – Paraná
Ecological remarks
Lacronia ceci is the first species of the genus to be found in highlands away from the coast. The other three species of Lacronia are known from coastal environments: Lacronia serripes is known only from small islands. The other two were found in continental "restinga" biome. Individuals of both sexes of Lacronia ceci were found inside bamboo (Guadua taguara) hollows or in immediately surrounding areas. No individuals were found in other locations during diurnal collectings. Lacronia camboriu and L. ricardoi were found inside bromeliads, suggesting that the species of this genus are related to phytotelmata.{{Cite journal |last=Kury |first=A. B. |last2=V. G. D. |first2=Orrico |date=2006 |title=A new species of Lacronia Strand, 1942 from the highlands of Rio de Janeiro (Opiliones, Gonyleptidae, Pachylinae) |journal=Revista Ibérica de Aracnología |volume=13 |pages=147–153}}