Systematics and evolution of raft and nursery-web spiders
- Matjaž Gregorič
- Feb 4
- 1 min read
Pisauridae - nursery-web spiders - are a global and heterogeneous assemblage of spider genera with diverse morphologies and lifestyles. So far, the monophyly of Pisauridae and the inclusion of fishing spiders (Dolomedes) in this family have not been thoroughly tested. Here, we amend the systematics and classification of these lineages within a UCE phylogenomic framework and through a detailed morphological reappraisal.
Phylogenies reject the monophyly of both Pisauridae and Dolomedes: we therefore propose to delimit Pisauridae by removing Dolomedidae rank resurrected and Blandinia incertae sedis. Likelihood and Bayesian time calibration approaches yield comparable divergence estimations: Pisauridae origin is estimated at 29–40 Ma; Blandinia 21–34 Ma; Dolomedidae 10–17 Ma; Dolomedes 9–16 Ma.
Reconstructions suggest that the evolution of terrestrial and web-building lifestyles from semi-aquatic ancestors in Pisauridae coincided with cooling and drying climates during the mid-Miocene, but this was not the case in the few recent cases of terrestrialization in Dolomedes species. This historic reconstruction illustrates how climatic changes, or rapid radiation, can drive lifestyle diversification.

acehbola
situs slot dana
BANDAR TOGEL ONLINE
toto togel
slot online
acehbola
situs bola online
Situs Bola Online
situs slot dana
Situs Slot Dana
Situs Mix Parlay
acehbola
situs slot toto
situs judi bola
Situs bola Online
slot gacor
situs slot online
situs bola terbaik
aceh4d
aceh4d
aceh4d
situs togel
ts77casino
slot dana