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FIGURE 26 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 26: Torrenticola trimaculata n. sp. abnormalities (males depicted; A-C are slide preparations with separated gnathosoma, dorsum, and venter; D-E are LT-SEM): A – red color of gnathosoma and surrounding venter, only occurs in Morph 1; B – posterior spots fused, only occurs in Morph 1; C – posterior spots strongly reduced, only occurs in Morph 2; D – left anterio-medial platelets stunted; E – close-up of D depicting eye capsule (ec), anterio-medial platelet (e-m p), and dorsal glandularia 2 (Dgl-2).
FIGURE 20 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 20: Torrenticola trimaculata n. sp. venter (right legs removed; left leg setae omitted; female depicted): coxae (Cx; fused coxae: Cx II+III); coxal glandularia (Cxgl); excretory pore (ep); latero-glandularia (Lgl); medial length of suture between Cx II+III (Cx II+III mL); ventral glandularia (Vgl); and area of primary (1°) and secondary (2°) sclerotization.
FIGURE 22 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 22: Torrenticola trimaculata n. sp. glandularia (LT-SEM): A – ventral view of gnathosoma and surrounding coxae depicting coxal glandularia (Cxgl); B – close-up of Cxgl-4; C – dorsal glandularium 4 (Dgl-4); D – coxal glandularium 2 (Cxgl-2).
FIGURE 21 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 21: Torrenticola trimaculata n. sp. lateral glandularia (LT-SEM; female depicted): coxal glandularia (Cxgl); dorsal furrow (df); dorsal glandularia 1 (Dgl-1); eye capsule (ec); lateral glandularia (Lgl); lyrifissure 1 (l-1); preocularial seta (pr); and areas of primary (1°) and secondary sclerotization (2°).
FIGURE 19 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 19: Torrenticola trimaculata n. sp. frontal view (LT-SEM). Eye capsule (ec); lyrifissure 1 (l-1); latero-glandularia 1 (Lgl-1); and coxal glandularia 4 (Cxgl-4). Note vertically stacked, dual eyes on eye capsule.
FIGURE 18 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 18: Torrenticola trimaculata n. sp. posterio-lateral dorsum (LT-SEM): anterio-lateral platelet (a-l p); dorsal furrow (df); dorsal glandularia (Dgl); dorsal plate (dp); lateral glandularia (Lgl); lyrifissures (l); anterior two posterior-lateral platelets (p-l p) partially visible; and area of primary (1°) and secondary (2°) sclerotization.
FIGURE 17 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 17: Torrenticola trimaculata n. sp. anterio-lateral dorsum (LT-SEM): A – anterio-lateral platelet (a-l p); anterio-medial platelet (a-m p); dorsal glandularia (Dgl); dorsal plate (dp); eye capsule (ec); lateral glandularia (Lgl); lyrifissures (l); pre-ocularial setae (pr); post-ocularial setae (po); B – close-up view of l-2; C – close-up view of eye capsule.
FIGURE 14 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 14: Torrenticola trimaculata n. sp. pedipalp setae (LT-SEM): A – dorsal view of right tarsus; B – latero-medial view of right tarsus, note dual ventral claws; C – dorso-lateral view of pedipalps. Fringed spatulate setae (fss); grooved spine-like seta (gss); short grooved setae (sgs); short bifurcating setae (sbs); long simple setae (lss)
FIGURE 16 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 16: Torrenticola trimaculata n. sp. dorsum (LT-SEM; gnathosoma removed): anterio-lateral platelet (a-l p); anterio-medial platelet
FIGURE 4 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 4: Torrenticola trimaculata n. sp. COI phylogenetics: T. trimaculata clade demonstrating (A) no correlation between color morph and lineage and (B) no correlation between biogeography and lineage. This monophyletic clade is part of a larger, multi-species phylogenetic hypothesis (not depicted), indicated by arrows at the base. Only nodes with posterior probabilities>0.95 are displayed. Sequences exhibit <2% divergence from each other.
FIGURE 8 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 8: Torrenticola trimaculata n. sp. tarsal claws (LT-SEM): A – lateral view of protracted claws, note distal bifurcation and proximal shield-like wedge; B – latero-dorsal view of claws partially retracted into tibial groove; C – dorsal view of tibial groove;
FIGURE 11 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 11: Torrenticola trimaculata n. sp. female gnathosoma: adoral setae (ad); bifurcating short setae (bss), fringed spatulate setae (fss), long simple setae (lss), oral opening (o), posterio-dorsal apodeme (p-d a), posterio-ventral apodeme (p-v a), simple grooved setae (sgs).
FIGURE 3 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 3: Torrenticola trimaculata n. sp. color loss in Hoyer's medium (slide preparation of holotype with separated dorsum and venter): A – prior to warming in Hoyer's medium, note dorsal spots and ventral coloration; B – same specimen after warming in Hoyer's medium, note pigmentation (dark color) is cleared, but structural (red) coloration is retained.
FIGURE 15 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 15: Torrenticola trimaculata n. sp. dorsal plates: anterio-lateral platelet (a-l p); anterio-medial platelet (a-m p); dorsal glandularia (Dgl); dorsal plate (dp); muscle scars (ms); post-ocularial setae (po); and area of primary (1°) and secondary (2°) sclerotization.
FIGURE 10 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 10: Torrenticola trimaculata n. sp. sexual dimorphism: A – female gnathosoma, note forward-pointing rostrum and deeper ventral bend; B – male gnathosoma, note down-pointing rostrum and thus shallower ventral bend; C-D – female and male venters, respectively: i) female with shorter coxa II+III medial length; ii) female with larger, rounder body; iii) female genital plates larger, pentagonal (males are rectangular), and extending anteriorly beyond Leg IV insertion; iv) female coxae IV extend posteriorly well beyond genital plates.
FIGURE 9 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 9: Torrenticola trimaculata n. sp. variation (dorsal shield compound light micrographs): A – Morph I females, note only slight variably in body shape and spots; B – Morph II females, note high variability in body shape, size and shape of spots, and shape of red marking; C – Morph I males, note only slight variability in body shape body and spots; D – Morph II males, note high variability in body shape and spots. Overall light/dark appearance is a result of exposure differences across multiple cameras, not real-life variation.
FIGURE 1 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 1: Torrenticola trimaculata n. sp. habitus of types (montaged from iPhone steromicrographs): A – Holotype (female): dorsal and ventral habitus, Morph 1; B – Allotype (male): dorsal and ventral habitus, Morph 1. Coloration is not indicative of sex.
FIGURE 12 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 12: Torrenticola trimaculata n. sp. rostral opening and fangs (LT-SEM): A – frontal aspect of rostrum showing opening for fangs surrounded by adoral setae (ad); B – lateral view of rostrum with both fangs partially extended; C – lateral view of fangs; D – frontal view depicting extended right fang (left fang just emerging from rostrum), note lateral and medial teeth of right fang probably used for anchoring into prey; E – dorsal view of rostral opening with fangs retracted.
FIGURE 7 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 7: Torrenticola trimaculata n. sp. leg setae (LT-SEM): A – Leg I trochanter, note hatchet-shape and fringed spatulate setae; B – Leg II telofemur, note fringed spatulate setae and simple setae; C – Leg II & III with coxal glandularium 2 (Cxgl-2) in right foreground, note variously shaped fringed spatulate setae, hexagonal depressions of integument on legs (esp. on telo-femur II), and crenulated distal margins of podomeres.
FIGURE 6 in Torrenticola trimaculata n. sp. (Parasitengona: Torrenticolidae), a three-spotted water mite from eastern North America: taxonomic history, species delimitation, and survey of external morphology
FIGURE 6: Torrenticola trimaculata n. sp. primary and secondary sclerotization (Morph-1 female compound light micrographs):
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