Testudacarus hyporhynchus
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Ordo: Trombidiformes
Familia: Torrenticolidae
Genus: Testudacarus
Name
Testudacarus hyporhynchus O’Neill & Dowling sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Type series
Holotype (1♀): California, USA: 1♀ Humboldt County, Willow Creek, Willow Creek Campground off Rt. 299 (40°54'17.00"N, 123°42'21.00"W), 14 June 2010, by IM Smith, IMS100065 (Specimen 146762 – DNA#2177); Paratype (1♀, 2♂): California, USA: (allotype) 1♂ Humboldt County, Willow Creek, Willow Creek Campground off Rt. 299 (40°54'17.00"N, 123°42'21.00"W), 14 June 2010, by IM Smith, IMS100065 (Specimen 146763 – DNA#2178); 1♂ Humboldt County, Willow Creek, Willow Creek Campground off Rt. 299 (40°54'17.00"N, 123°42'21.00"W), 14 June 2010, by IM Smith, IMS100065; Oregon, USA: 1♀ from Curry County, Port Orford, beside Elk River Road 9.0 km east of Elk River Fish Hatchery (42°42'22.00"N, 124°20'28.00"W), 22 June 2010, by IM Smith, IMS100080.
Type deposition
Holotype (1♀) and allotype (1♂) deposited at CNC; two paratypes (1♀, 1♂) at ACUA.
Diagnosis
These mites differ from the rest of the complex in having a dorsally “covered” gnathosomal bay (short doral gnathosomal bay length) and an elongate gnathosoma with a long rostrum that exteneds below the gnathosoma ventral surface.
Description
Female (n=2) with characteristics of genus with following specifications.
Gnathosoma (Fig. 36) — Subcapitulum [244–250 ventral length; 150–155 dorsal length; 89–97 tall] elongate with long rostrum extending below ventral surface; colorless. Chelicerae [210–220 long] unmodified with lightly curved fangs [32–36 long]. Pedipalp [194–203 long] unmodified. Trochanter [24–25 long; 38–40 wide]. Femur [53–56 long; 42–43 wide]. Genu [44–45 long; 34–35 wide]. Tibia [50–54 long; 22–23 wide]. Tarsus [21–22 long; 9–10 wide]. Dorsum (Fig. 37) — [768–849 long; 634–668 wide] round to ovoid and mostly colorless. Dorsal plate [570–578 long; 645–693 wide]. Primary sclerotization [540–583 long] colorless to light pink. Dorso-glandularia-4 [230–252 apart] lateral to [44–61] and just anterior to [0–27] muscle scars. Platelets colorless. Anterio-medial platelet [230–252 long; 103–116 wide]. Anterio-lateral platelets [229–246 long; 117–123 wide]. Lateral platelets as follows: lateral-1 [66–83 long; 56–59 wide]; lateral-2 [156–188 long; 47–51 wide]; lateral-3 [60–84 long; 29–30 wide]; lateral-4 [139–150 long; 35–45 wide]; lateral-5 [79–93 long; 41–42 wide]; lateral-6 [129–144 long; 39–44 wide]; lateral-7 [76–88 long; 35–41 wide]. Venter (Fig. 37) — [1001–1049 long; 700–728 wide] round to ovoid and colorless. Primary sclerotization [814–824 long]. Gnathosomal bay [14–20 dorsal length; 101–102 ventral length; 67–70 wide] short dorsally giving a “covered” appearance and ventrally ending anterior to leg-I insertion. Coxal field [590–616 long; 404–433 wide]. Coxa-I [298–316 long; 196–216 midlength]. Coxa-II + III [127–143 distance to top of coxa-II; 216–264 distance to top of coxa-III; 427–446 distance to bottom of coxa-III; 299–303 total length]. Coxa-IV [399–434 distance to top; 182–191 total length]. Genital field [410–424 distance to top; 627–642 distance to bottom; 217–218 total length; 174–189 width; 308–323 distance from gnathosomal bay; 108–112 distance from coxa-I; 252–270 distance to excretory pore; 374–407 distance to caudad] large. Distance to excretory pore [879–912].
Legs — colorless. Total leg and podomere lengths as follows: Leg-I [566–594 total; trochanter 68–74; basifemur 104–106; telofemur 81–85; genu 108–112; tibia 109–117; tarsus 95–102]. Leg-II [614–645 total; trochanter 75–78; basifemur 102–108; telofemur 77–79; genu 111–116; tibia 124–130; tarsus 125–135]. Leg-III [714–753 total; trochanter 74–79; basifemur 109–119; telofemur 88–94; genu 136–139; tibia 154–160; tarsus 152–161]. Leg-IV [952–961 total; trochanter 105–109; basifemur 142–144; telofemur 138–139; genu 191–192; tibia 199–201; tarsus 175–178].
Male (n=2) similar to female except for sexually dimorphic characters previously discussed and with following specifications.
Gnathosoma (Fig. 36) — Subcapitulum [222–239 ventral length; 136–151 dorsal length; 85–89 tall]. Chelicerae [203–218 long]. Fangs [33–34 long]. Pedipalp [195–200 long]. Trochanter [24–25 long; 36–38 wide]. Femur [55–58 long; 42–46 wide]. Genu [45–46 long; width 34–35 wide]. Tibia [50–54 long; 21–23 wide]. Tarsus [17–20 long; 8–9 wide].
Dorsum (Fig. 38) — [667–712 long; 548–582 wide]. Dorsal plate [546–616 long; 470–471 wide]. Dorso-glandularia-4 [192–212 apart] lateral to and well anterior to muscle scars [65–67 anterior to; 40–55 lateral to]. Anterio-medial platelet [244–249 long; 91–100 wide]. Anterio-lateral platelets [225–229 long; 111–116 wide]. Lateral platelets as follows: lateral-1 [49–61 long; 43–60 wide]; lateral-2 [135–152 long; 47–50 wide]; lateral-3 [53–60 long; 24–25 wide]; lateral-4 [135–144 long; 37–41 wide]; lateral-5 [60–75 long; 35–37 wide]; lateral-6 [101–105 long; 32–37 wide]; lateral-7 [59–63 long; 31–33 wide]. Venter (Fig. 38) — [835–898 long; 625–626 wide]. Primary sclerotization [750–791 long]. Gnathosomal bay [16–20 dorsal length; 99–101 ventral length; 67–68 wide]. Coxal field [553–576 long; 403–408 wide]. Coxa-I [296–318 long; 195–218 midlength]. Coxa-II + III [116–127 distance to top of coxa-II; 212–234 distance to top of coxa-III; 430–473 distance to bottom of coxa-III; 314–346 total length]. Coxa-IV [377–413 length to top; 163–176 total length]. Genital field [473–506 distance to top; 636–681 distance to bottom; 163–175 total length; 149–151 width; 372–407 distance from gnathosomal bay; 177–188 distance from coxa-I; 129–134 distance to excretory pore; 200–217 distance to caudad]. Genital skeleton [180–187 long; 117–122 wide]. Distance to excretory pore [765–815].
Legs — total leg and podomere lengths as follows: Leg-I [593–606 total; trochanter 73–79; basifemur 111–114; telofemur 78–83; genu 107–111; tibia 113–118; tarsus 105–106]. Leg-II [635–645 total; trochanter 74–79; basifemur 102–104; telofemur 84–85; genu 115–120; tibia 129–132; tarsus 124–130]. Leg-III [724–726 total; trochanter 77–78; basifemur 109–116; telofemur 87–91; genu 136–137; tibia 155–156; tarsus 152–155]. Leg-IV [905–964 total; trochanter 107–118; basifemur 139–140; telofemur 129–142; genu 183–191; tibia 179–198; tarsus 167–176].
Etymology
Specific epithet hyporhynchus (hypo-, G. under; rhynchus, G. snout) refers to the long rostrum that extends below the ventral surface of the gnathosoma.
Distribution
Humbolt County, California and Curry County, Oregon.
Original Description
- O’Neill, J; Fisher, J; Nelson, W; Skvarla, M; Fisher, D; Dowling, A; 2016: Systematics of testudacarine torrent mites (Acari, Hydrachnidia, Torrenticolidae) with descriptions of 13 new species from North America ZooKeys, (582): 13-110. doi
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