Touranella gracilis Attems, 1937
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publication ID |
https://doi.org/10.3897/zookeys.1238.147550 |
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publication LSID |
lsid:zoobank.org:pub:1DD6E6F9-37AE-4DA0-AF62-64AD586F6F9A |
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DOI |
https://doi.org/10.5281/zenodo.15442212 |
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persistent identifier |
https://treatment.plazi.org/id/AF25E355-5C7B-5FBD-AFF7-3435864ECA48 |
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treatment provided by |
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scientific name |
Touranella gracilis Attems, 1937 |
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Touranella gracilis Attems, 1937 View in CoL
Figs 2 View Figure 2 , 3 View Figure 3
Touranella gracilis Attems 1937: 231 (D). View in CoL
Touranella gracilis View in CoL – Attems 1938: 233 (D); Jeekel 1968: 64 (M); Golovatch 1983: 182 (M); 1994: 186 (D, M); 2009 a: 6 (M, K); 2009 b: 120 (M); 2016: 139 (M, K); Enghoff et al. (2004): 40 (L); Golovatch and Semenyuk 2010: 125 (M); 2018: 16 (M); Nguyen and Sierwald 2013: 1180 (L); Nguyen et al. 2023: 170 (M, K).
Type material examined.
Holotype. • ♂ ( NHMW-3531 ), Vietnam, Danang Province, Lienchieu , 1931, leg. C. Dawydoff. Paratype. • ♀ ( NHMW-3531 ), same locality, together with holotype .
Redescription.
Length 12.5 (♂) or 14.4 mm (♀), width of midbody pro- and metazona 0.73 and 0.97 mm (♂) or 1.17 and 1.47 mm (♀), respectively.
Coloration of alcohol material after long-term preservation dark red brown (Fig. 2 A – G, J – L View Figure 2 ) with pale castaneous brown paraterga and epiproct, yellowish antennae, venter, and legs (Fig. 2 A – L View Figure 2 ) (vs body color almost black with pale yellowish antennae and legs, as given in the descriptions by Attems 1937).
Clypeolabral region and vertex sparsely setose, epicranial suture distinct. Antennae rather short, reaching to body ring 3 (♂) or ring 2 (♀) when stretched dorsally. In width, ring 2 <3 <collum <head <ring 4 <5–16 (♂, ♀), thereafter body gently and gradually tapering towards telson. Collum with abundant, small, setiferous knobs; anterior edge broadly rounded, narrowly bordered, fused to callus; caudal corner very broadly rounded, not produced past the rear tergal margin; lateral edge with two-minute incisions, slightly declined ventrad (Fig. 2 A, B, J View Figure 2 ).
Tegument smooth and shining, prozona very finely shagreened, metaterga roughly granulate-tuberculate and shagreened; surface below paraterga finely microgranulate (Fig. 2 A – F, J – L View Figure 2 ). Postcollum metaterga with abundant, small, irregular, setiferous knobs. Tergal setae long, slender, ~ 1 / 2 length of metaterga. Axial line rather faint but traceable both on pro- and metaterga. Paraterga strongly developed (Fig. 2 A – F, J – L View Figure 2 ), lying low (at ~ 1 / 2–1 / 3 midbody height); anterior edge narrowly rounded and narrowly bordered, fused to callus; caudal corner narrowly rounded to nearly pointed, not produced past the rear tergal margin; lateral edge with three evident, lateral, setigerous incisions on poreless calluses and two strong ones (anterior) on pore-bearing calluses. Calluses on paraterga delimited by a sulcus only on dorsally. Ozopores evident, lateral, each lying in an ovoid groove at ~ 1 / 4 in front of caudal corner. Transverse metatergal sulci usually distinct (Fig. 2 A, C, F, K, L View Figure 2 ), incomplete on ring 4, complete on metaterga 5–18, line-shaped, very deep, not reaching bases of paraterga, faintly ribbed at bottom. Stricture between pro- and metazona wide, line-shaped, rather deep, evidently ribbed at bottom down to base of paraterga (Fig. 2 A – F, K, L View Figure 2 ). Pleurosternal carinae with an anterior narrowly rounded crest on ring 2, thereafter missing.
Epiproct (Fig. 2 E, G View Figure 2 ) conical, flattened dorsoventrally, with two-minute apical papillae; tip subtruncate; pre-apical papillae absent. Hypoproct subtriangular, setiferous knobs at caudal edge well-separated and evident (Fig. 2 G View Figure 2 ).
Sterna sparsely setose, without modifications; an entire, short, linguiform, setose sternal lobe between ♂ coxae 4 (Fig. 2 H, I View Figure 2 ). A paramedian pair of evident tubercles in front of gonopods aperture. Legs moderately long and slender, slightly incrassate in ♂, midbody legs ~ 1.3–1.4 (♂) or 1.0–1.1 × (♀) as long as body height, prefemora without modifications, ♂ tarsal brushes absent.
Gonopods simple and stout (Fig. 3 A, B View Figure 3 ); coxa slightly curving caudally, densely setose distodorsally. Prefemoral part (pfe) densely setose, ~ 1 / 4 the length of acropodite (femoral part + postfemoral part) (Fig. 3 A, B View Figure 3 ). Femoral part (fe) strongly reduced, with a prominent, simple, lance-shaped lateral prefemoral process (fp) (Fig. 3 B View Figure 3 ) and a fully medial, strong, long, flagelliform solenomere (sl) (Fig. 3 A, B View Figure 3 ). Solenophore (sph) suberect, slightly twisted distally, strongly developed, sheathing most of solenomere (sl), with a lateral shoulder (u) at the base, distally bearing a pointed process (e) and a narrow unciform lamona (g) (Fig. 3 A, B View Figure 3 ).
Distribution.
It is known only from the type locality and appears to be endemic to Vietnam.
Remarks.
Although Golovatch (1994) examined and illustrated the gonopodal structure of this species, nearly all other morphological features remained ignored. The present study provides a comprehensive description of the species which appears to be endemic to Vietnam.
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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SubFamily |
Alogolykinae |
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Alogolykini |
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Genus |
Touranella gracilis Attems, 1937
| Likhitrakarn, Natdanai, Golovatch, Sergei I., Inkhavilay, Khamla, Panha, Somsak & Sutcharit, Chirasak 2025 |
Touranella gracilis
| Nguyen AD & Sierwald P & Ware S 2023: 170 |
| Nguyen AD & Sierwald P 2013: 1180 |
| Golovatch SI & Semenyuk II 2010: 125 |
| Enghoff H & Golovatch SI & Nguyen AD 2004: 40 |
| Golovatch SI 1983: 182 |
| Jeekel CAW 1968: 64 |
| Attems C 1938: 233 |
Touranella gracilis
| Attems CW 1937: 231 |