Torrenticola harrisoni K. Viets, 1956
publication ID |
https://doi.org/ 10.11646/zootaxa.3820.1.1 |
publication LSID |
lsid:zoobank.org:pub:BBE4177B-5A2C-4911-987C-454BB8FA767C |
DOI |
https://doi.org/10.5281/zenodo.6143448 |
persistent identifier |
https://treatment.plazi.org/id/03BFDC60-AB51-690A-FF47-F96FFE40F815 |
treatment provided by |
Plazi |
scientific name |
Torrenticola harrisoni K. Viets, 1956 |
status |
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Torrenticola harrisoni K. Viets, 1956
( Figs. 7A–C View FIGURE 7 A – C , 8A–F View FIGURE 8 A – F , 9A–C View FIGURE 9 A – C , 10A–E View FIGURE 10 A – E , 13A–F View FIGURE 13 A – F , 15A–F View FIGURE 15 A – F , Tabs. 1–2)
Torrenticola harrisoni K. Viets 1956: 9 .
New records. Ghana: Laboun River, downstream, Kyabobo NP, 8º 19.931 N, 0º 34.476 E, 24.ii.2013, Smit, 8/6/0 (2/ 1/0 mounted); Tagbo River, downstream of falls, 7º 00.708 N, 0º 34.326 E, alt. 394 m asl., 23.ii.2013, Smit, 2/2/0 (1/ 1/0 mounted); stream downstream of Wanjakli Falls, Likpe Todome, 7º 09.976 N, 0º 36.456 E, alt. 478 m asl., 23.ii.2013, Smit, 14/10/0 (2/0/0 mounted); Apkonu stream, downstream of falls, 6º 53.054 N, 0º 28.024 E, alt. 362 m asl., 21.ii.2013, Smit, 7/5/0 (1/0/0 mounted); small rainforest stream upstream Sagyimase, Atewa Hills, 6º 13.964 N, 0º 33.116 W, alt. 654 m asl., 08.iii.2011, Smit, 1[juvenile]/1[juvenile]/0.
Morphology. General features —Idiosoma roundish; Cxgl-4 far posterior at margin of Cx-I/II, between I-L and II-L insertions, but close to I-L insertion; excretory pore posterior to Vgl–2 ( Figs. 7A–B View FIGURE 7 A – C ); ventral margin of gnathosoma moderately curved, rostrum well developed and slender ( Fig. 8D View FIGURE 8 A – F ); P-2 shorter than P-4, P-2 ventral margin slightly S-shaped, P-2 and P-3 with a subrectangular, apically serrated distoventral projection ( Figs. 8A–C View FIGURE 8 A – F ), P-2 ventral seta very short (hardly visible), denticle-like, inserted close to distal margin of ventridistal protrusion, P-4 slender with well developed ventral protuberance in distal half of segment, bearing one long and 1–3 short setae. Male: medial suture line of Cx-II+III moderately long; suture line of Cx-IV distinct, medially starting from posterior margin of genital field in a right angle to the main idiosoma axis; genital field subrectangular in shape; ejaculatory complex with small proximal chamber; Vgl–2 close to the line of primary sclerotization, excretory pore near posterior end of idiosoma. Female: suture line of Cx-IV curved and extending further posterior to the genital field than in male; genital field pentagonal in shape; excretory pore and Vgl–2 away from the line of primary sclerotization.
Measurements. Male (from Laboun River, downstream, n = 2)—Idiosoma (ventral view: Figs. 7A View FIGURE 7 A – C , 15A–C View FIGURE 15 A – F ) L 522–541, W 375–377; dorsal shield ( Figs. 5C View FIGURE 5 A – E , 11A–C View FIGURE 11 A – F ) L 422, W 324, L/W ratio 1.3; dorsal plate L 391–392; shoulder platelets L 119–120, W 38–44, L/W ratio 2.7–3.2; frontal platelets L 106–111, W 41–44, L/W ratio 2.4–2.7; shoulder/frontal platelets L ratio 1.07–1.11. Gnathosomal bay L 74–94, Cx-I total L 191–203, Cx-I mL 109–116, Cx-II+III mL 86–103; ratio Cx-I L/Cx-II+III mL 2.0–2.2; Cx-I mL/Cx-II+III mL 1.06–1.35. Genital field L/W 110–113/90–91, ratio 1.22–1.25; ejaculatory complex L 166; distance genital field-excretory pore 86–113, genital field-caudal idiosoma margin 103–153. Gnathosoma vL 213–229; chelicera total L 252–259; palp total L 227–229, dL/H, dL/H ratio: P- 1 21–22/20 –22, 1.0–1.03; P-2 66–69/36–37, 1.83–1.86; P-3 48–52/31–32, 1.51–1.62; P-4 72–79/17, 4.36–4.73); P- 5 13–14/11, 1.25; P-2/P-4 ratio 0.84–0.95; dL of I-L-2–6: 48, 54, 69, 74–77, 74–78; I-L-6 H 29–31, dL/H I-L-6 ratio 2.4–2.7.
Plunge pool, River Tordzi, Nubui River, Ankasa River, Ankasa River, Tagbo River,
♂ ♂ ♂ ♂ ♀ ♂ Female (from Laboun River, downstream, n = 1)—Idiosoma (ventral view: Figs. 9B View FIGURE 9 A – C , 15B–C View FIGURE 15 A – F ) L 550, W 372; dorsal shield ( Fig. 13C View FIGURE 13 A – F ) L 409, W 327, L/W ratio 1.25; dorsal plate L 378; shoulder platelets L 115–116, W 44–47, L/W ratio 2.46–2.65; frontal platelets L 100–103, W 41–42, L/W ratio 2.46; shoulder/frontal platelets L ratio 1.12–1.16. Gnathosomal bay L 84, Cx-I total L 184, Cx-I mL 100, Cx-II+III mL 77; ratio Cx-I L/Cx-II+III mL 2.4; Cx-I mL/Cx-II+III mL 1.3. Genital field L/W 113/109, ratio 1.03; distance genital field-excretory pore 126, genital field-caudal idiosoma margin 172. Gnathosoma vL 219; chelicera total L 249; palp total L 227–228, dL/H, dL/H ratio: P-1, 21–22/22, 1.0; P-2, 69/35, 1.97; P-3, 49/32, 1.53; P-4, 74/17, 4.35; P-5, 14/11, 1.27; P-2/P-4 ratio 0.94; dL of I-L-3–6: 52, 65, 75, 75; I-L-6 H 29, dL/H I-L-6 ratio 2.6.
In addition to the populations listed above (here assigned as form ''A'') we give locality records and measurements of the specimens (here assigned as form ''B'') differing in the larger dimensions of idiosoma, more stout palp segments, especially P-4, with the ventral protuberance just in the distal half (compare Figs. 13A–C View FIGURE 13 A – F with 13D–F). Furthermore, these specimens differ in having a somewhat banded colour pattern rather than the solid colour pattern on the dorsal plate of the dorsal shield in specimens listed above (compare Figs. 9 View FIGURE 9 A – C F–G with 9I –M). These differences could reflect some degree of genetical diferentiation between these populations.
New records. Ghana: Agumatsa River at first bridge, Agumatsa Wildlife Sanctuary, 7º 06.830 N, 0º 35.760 E, alt. 253 m asl., 22.ii.2013, Smit, 6/3/0 (2/1/0 mounted); Plunge pool, Agumatsa Falls, Agumatsa Wildlife Sanctuary, 7º 06.350 N, 0º 36.476 E, alt. 258 m asl., 22.ii.2013, Smit, 1/0/0 (mounted); River Tordzi, 6º 32.819 N, 0º 41.445 E, alt. 79 m asl., 19.ii.2013, Smit, 1/3[one specimen damaged, palps and gnathosoma lacking]/0 (1/0/0 mounted); Nubui River, Agumatsa Wildlife Sanctuary, 7º 06.986 N, 0º 35.548 E, alt. 254 m asl., 22.ii.2013, Smit, 3/ 3/0 (1/0/0 mounted); Ankasa River, Ankasa NP, 5º 13.011 N, 2º 39.126 W, alt. 60 m asl., 13.ii.2013, Smit, 1/5/0 (1/ 1/0 mounted); Tagbo River, downstream, 7º 00.974 N, 0º 33.471 E, alt. 255 m asl, 23.ii.2013, Smit, 1/3/0 (1/0/0 mounted).
Measurements. Male (from Agumatsa River at first bridge, n = 1)—Idiosoma (ventral view: Figs. 9A View FIGURE 9 A – C , 15D View FIGURE 15 A – F ) L 569–578, W 400–403; dorsal shield ( Figs. 9C View FIGURE 9 A – C , 13D View FIGURE 13 A – F ) L 444–450, W 350–352, L/W ratio 1.26–1.29; dorsal plate L 409–411; shoulder platelets L 116–127), W 44–50), L/W ratio 2.4–2.7; frontal platelets L 122–128, W 45–50, L/W ratio 2.44–2.69; shoulder/frontal platelets L ratio 0.92–1.04. Gnathosomal bay L 91–94, Cx-I total L 200–203, Cx- I mL 109, Cx-II+III mL 94–109; ratio Cx-I L/Cx-II+III mL (1.86–2.1); Cx-I mL/Cx-II+III mL 1.0–1.16. Genital field L/W 117–123/95–97, ratio 1.23–1.27; ejaculatory complex L 162; distance genital field-excretory pore 106–119, genital field-caudal idiosoma margin 139–163. Gnathosoma vL 221–226; chelicera total L 260; palp total L 243–244, dL/H, dL/H ratio: P-1, 24–25/24–25, 1.0–1.02; P-2, 71–74/42–43, 1.64–1.75; P-3, 55/39–41, 1.36–1.44; P-4, 76–79/22, 3.4–3.65; P-5, 17–20/11–12, 1.4–1.85; P-2/P-4 ratio 0.93–0.94; dL of I-L-2–6: 51, 63, 75–77, 81–82, 83–89; I-L-6 H 32, dL/H I-L-6 ratio 2.6–2.8.
Female (from Agumatsa River at first bridge, n = 1)—Idiosoma (ventral view: Figs. 9B View FIGURE 9 A – C , 15F View FIGURE 15 A – F ) L 609, W 409; dorsal shield ( Fig. 13F View FIGURE 13 A – F ) L 481, W 350, L/W ratio 1.37; dorsal plate L 450; shoulder platelets L 122–127, W 42, L/ W ratio 2.9–3.0; frontal platelets L 116–123, W 45, L/W ratio 2.6–2.7; shoulder/frontal platelets L ratio 0.99–1.08. Gnathosomal bay L 106, Cx-I total L 209, Cx-I mL 103, Cx-II+III mL 69; ratio Cx-I L/Cx-II+III mL 3.0; Cx-I mL/ Cx-II+III mL 1.5. Genital field L/W 128/117, ratio 1.09; distance genital field-excretory pore 141, genital fieldcaudal idiosoma margin 203. Gnathosoma vL 235; chelicera total L 273; palp total L 252, dL/H, dL/H ratio: P-1, 26/25, 1.03; P-2, 81/46, 1.75; P-3, 59/42, 1.41; P-4, 67/22, 3.89; P-5, 19/12, 1.54; P-2/P-4 ratio 0.93; dL of I-L-2–6: 53, 62, 75, 81, 86; I-L-6 H 31, dL/H I-L-6 ratio 2.8.
Remarks. With respect to the general morphology of idiosoma and palp the specimens examined from Ghana agree well with Torrenticola harrisoni K. Viets, 1956 . This species was described by K. Viets (1956) based on a single male from Transvaal, South Africa. The female was described by K.O. Viets (1965) based on a juvenile specimen from Vaal River in South Africa. Later on, Motas & Tanasachi (1968) and Goldschmidt & Smit (2009) described and illustrated specimens from Ethiopia (see under Torrenticola calliope n. sp. for a discussion on these populations).
Together with Torrenticola bomiensis (see above), T. binga K.O. Viets, 1971 ( Zimbabwe, K.O. Viets 1971), and T. calliope n. sp. (see below), T. harrisoni forms a group of similar species ( Goldschmidt and Smit 2009) characterized by the V-shaped gnathosomal bay and P-2 and P-3 ventrodistally with spatula-shaped, finely serrate protrusions. The position of the Cxgl-4 far posteriorly, at the margin of Cx-I/II, between I-L and II-L insertions, is a very characteristic feature of T. harrisoni and separates later species from T. binga and T. bomiensis .
Distribution. South Africa ( K. Viets 1956, K.O. Viets 1965, 1971), Congo ( Zaire) ( K.O. Viets & Böttger 1974), Ghana (first record).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Torrenticola harrisoni K. Viets, 1956
Pešić, Vladimir & Smit, Harry 2014 |
Torrenticola harrisoni
Viets 1956: 9 |