FIGURE 4 in Two new species of Pyrgulopsis Call & Pilsbry, 1886 (Mollusca: Caenogastropoda: Hydrobiidae) from springs in the Rio Grande watershed in Texas

FIGURE 4. The highest-likelihood tree resulting from maximum-likelihood analysis of full COI alignment, including greater context of other Pyrgulopsis species from the region. Ultra-fast bootstrap values are presented at nodes. Terminals are labeled with a sample ID and sampling locality abbreviations. PA= Palo Amarillo Springs, BLU6=Bitter Lake National Wildlife Refuge Unit 6; BLU7=Bitter Lake National Wildlife Refuge Unit 7, BLSS=Sago Spring, BSP=Balmorhea State Park, CS=Caroline Springs, ES=East Sandia Springs, NS1=Naegele Springs 1, NS2=Naegele Springs 2, PC=Phantom Cave, VS=Vasquez Springs.