Vol. 60, 2021
(update: 2021.04.22; 07.07)
Review of Chilean Cyrtinae
(Diptera: Acroceridae) with the Description of Three New Species and
the First Record of Villalus inanis
Vicente Valdés Guzmán3,
and Laura Pañinao-Monsálvez2
de Ciencias Biológicas y Biodiversidad, Universidad de Los Lagos, Av.
Fuschlöcher 1305, Osorno, Chile. *Correspondence: E-mail:
2Moscas Florícolas de Chile Citizen Science Program,
pje. Arizona 4067a, Santiago, Chile.
3Biodiversidad Chilena Ltda, Camino Las Vertientes,
Colonia Kennedy 190a, Paine, Chile.
E-mail: firstname.lastname@example.org (Guzmán)
Received 29 June 2020 / Accepted 6
Communicated by Y. Miles Zhang
flies are endoparasitoids of spiders that are distributed in all
ecosystems except deserts and
the poles. This group was historically classified into three
subfamilies. However, molecular analyses have
indicated two new subfamilies. One of these is Cyrtinae Newman, which
is made up of two clades: the
north, with Palearctic species, and the south, with Chilean species
(except for the fossil genus Villalites
Hennig). In the southern clade, endemic genera Holops Philippi and Villalus Cole have been poorly
described over time by different authors. The aim of this study is to
re-describe the known species of
Holops and Villalus and describe three new
Holops species based on collected material: Holops grezi
sp. nov., Holops anarayae sp.
nov., and Holops pullomen sp.
nov. In addition, an identification species
key with updated distributions for all species and the first record of Villalus inanis from Argentina is
provided. New species are mainly characterized by the length of
flagellum; colors of the postocellar
lobe and thoracic segments, pilosity and legs; wing cells and veins,
and shape of the abdomen. Holops
and Villalus do not share
morphological traits with any other known extant genus of Acroceridae
southern hemisphere. The real biodiversity of this group must be
evaluated with a molecular phylogeny in
the future. In addition, the new species in the Pehuén and Valdivian
forest provinces, areas considered to
have been sheltered during the last glacial period, promoting
speciation in several taxa. New and cryptic
Holops species open the
doors to disentangling the real biodiversity of spider flies in Chile.
Key words: Holops, Maule province, Spider
flies, Valdivian forest province, Pehuén and Valdivian districts.
Citation: Barahona-Segovia RM, Guzmán VV,
Pañinao-Monsálvez L. 2021. Review of Chilean Cyrtinae (Diptera:
Acroceridae) with the description of three new species and the first
record of Villalus inanis
from Argentina. Zool Stud 60:35.