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Austropallene halanychi sp. nov., collection location (blue star) within the Ross Sea, Antarctica.
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Austropallene halanychi sp. nov., male holotype A side view (scale) B dorsal view C front view, note cephalic spurs D dorsal view of opened chelifore claw; note absence of denticle and conical outgrowth at base of fixed and movable fingers E dorsal view of chelifore claw F ventral view of chelifore claw; note conical outgrowth G dorsal view of proboscis with setose wreath H setose wreath around proboscis I dorsal view of eyespot J third walking leg K first coxa of third walking leg L side view of second coxa of third walking leg M propodus of walking leg N tubercles and spines on walking legs O ovigerous leg of male P strigilis of ovigerous leg Q 10th segment of oviger; note terminal spines R serrated ovigerous leg spines (compound spines) on strigilis of ovigerous leg.
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Austropallene halanychi sp. nov., male holotype A dorsal view B dorsal-frontal view; note shape, relative size, and black tips of chela fingers, cephalic spurs, and eye tubercle and eyes; note sharp conical outgrowths at base of fixed and movable fingers of chelifores (red arrow) C eye tubercle, top view D dorsal view of cephalic spurs, chelifore claws, and proboscis; note setose wreath on proboscis E setose wreath of proboscis F dorsal view of chelifore claws; note lack of space between chelifore fingers and small outgrowth (red arrow) G dorsal view of tip of chelifore claw; note presence of bristles along top of immovable finger.
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Austropallene halanychi sp. nov., male holotype A oviger, entire B strigilis, close-up view showing compound spines on segments 7–10 C compound spines on segment 9 D compound spines on segment 9 E strigilis, side view, showing compound spines on segments 7–10 (some spines on segment 10 are damaged or missing) F segments 8–10 with compound spines, and segment 10 with two terminal spines G segment 10, top view, close-up, with two terminal compound spines.
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Phylogenetic tree constructed with protein-coding gene data. The phylogenetic tree shows placement of Austropallene halanychi sp. nov. and was constructed using protein-coding gene data with IQ-TREE2; it uses a maximum likelihood approach and best-fit model (GTR+F+R5). The clade containing A. halanychi sp. nov. is highlighted, and bootstrap support (based on 1000 rapid bootstrap replicates) is included.
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Phylogenetic tree constructed with partial COI data from members of the family Callipallenidae. The phylogenetic tree was constructed with IQ-TREE2 using a maximum likelihood approach and the best-fit model (GTR+F+I+G4). The clade containing Austropallene halanychi sp. nov. is highlighted, and bootstrap support (based on 1000 rapid bootstrap replicates) is included.