Umborotula bogorensis
Creators: name: Ruengsawang, Nisit
name: Sangpradub, Narumon
name: Artchawakom, Taksin
name: Pronzato, Roberto
name: Manconi, Renata
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Haplosclerida
Spongillidae
Umborotula
Umborotula bogorensis

description: Umborotula bogorensis (Weber, 1890)
Figs 1–8; Table 1; Appendix
Ephydatia bogorensis Weber, 1890: 33.
Ephydatia blembingia Evans, 1901: 71.
Ephydatia bogorensis – Weltner 1895: 114. — Annandale 1911: 54; 1918: 201. — Gee & Wu 1925: 393. — Gee 1926: 110; 1927a: 1; 1927b: 61; 1928: 225; 1929a: 13; 1929b: 297; 1930a: 84; 1930b: 170; 1930c: 28; 1930d: 90; 1931: 34; 1932a: 449; 1932b: 28. — Vorstman 1927: 184. — Arndt 1932: 564. — Sasaki 1970: 44. — Cheng 1991: 2.
Ephydatia blembingia – Annandale 1907: 269; 1911: 54, 109; 1918: 207. — Gee 1930a: 90; 1930d: 90; 1932a: 450; 1932c: 295.
Ephydatia bogorensis var. blembingia – Gee 1931: 34; 1932a: 449; 1932b: 28; 1932c: 308. — Suvatti 1950: 3.
Meyenia bogorensis – Penney 1960: 46.
Meyenia bogorensis var. blembingia – Penney 1960: 46.
Umborotula bogorensis – Penney & Racek 1968: 122. — Racek 1969: 300. — Rützler 1978: 143. — Tendal 1969: 47 (emended in litteris). — Masuda 1998: 296. — Wang 1998: 280. — Manconi & Pronzato 2002: 964; 2007: 65, 71–72. — Masuda 2006: 19. — Manconi et al. 2013: 315–316, 319.
Note
Two specimens of Umborotula bogorensis were discovered and their morphotraits and habitat are reported. These specimens were registered in the Nisit Ruengsawang Collection as CNR-POR-FW100, on stick, Sakaerat Biosphere Reserve (Northeastern Thailand), N. Sangpradub leg., 21 Dec. 2014; CNR- POR-FW101, on rocky substrate, Sakaerat Biosphere Reserve (Northeastern Thailand), N. Sangpradub leg., 17 Jan. 2015. Both Thai specimens are also registered as slides (DTRG FW 770A, DTRG FW 770B) at the DISTAV, Genoa University.
Description
Growth form thin, encrusting (ca 4 cm), on stick and rocky substrata. Colour yellowish in vivo, light brown in dry condition. Consistency soft, fragile. Texture loose. Oscules inconspicuous. Surface slightly hispid for spicules. Ectosomal skeleton as emerging fibre tips supporting the dermal membrane. Choanosomal skeleton as loose reticulate network, anisotropic, paucispicular, with ascending fibres evident only towards the surface; ill-defined, irregular network towards the basal portion. Spongin scanty except for gemmular theca and basal plate. Megascleres oxeas (265.1–348.8 × 9.3–14 µm) from abruptly pointed to acerate, from straight (dominant) to bent; abruptly pointed acanthoxeas (dominant), with small microspines scattered along the shaft and more dense towards the smooth apical tips; spine apices oriented towards the tips; spines from smooth to ornate by microspines. Smooth oxeas also present. Rare malformations. Microscleres absent; free gemmuloscleres abundantly scattered in the skeletal network. Gemmules not abundant and scattered singly from surface to basal portion within meshes of the fibrous network. Gemmules subspherical (413–546 µm in diameter), slightly flattened at the foramen side. Foramen single short foraminal tube with a short simple collar in a depression surrounded by a thickening of the gemmular wall. Gemmular theca trilayered. Outer layer thin, armed with a robust continuous layer (mosaic-like) of distal rotules; frequently with distal rotules of gemmuloscleres notably emerging from outer layer. Pneumatic layer (60–80 µm in thickness) fibrous, without chambers, as a network of anastomosing very thin spongin fibres. Inner layer multilayered of compact spongin. Gemmuloscleres umbonate birotules of a single size class, radially and densely embedded in pneumatic layer, with overlapping umbrella-shaped rotules in contact with both inner and outer layer. Rotules of equal diameter (20–25 µm), distally convex and proximally concave, sometimes irregular. Margins incised, serrate, recurved bearing dense, short hooks. Hooks here and there in a double layer with simple, smooth tips (recurve spines) of variable length. Birotule shaft (55.1–76.9 × 4.4–5.8 µm) entirely spiny, with large, perpendicular conical spines. Spines straight in middle axis bending towards rotules, notably variable in length and density, with tips acute and sometimes bent, from smooth to ornate by microspines, rare tubercles also present. Young gemmuloscleres as birotules with scarcely developed rotules. Rare birotules (not young) with very short shaft (ca half length) and well developed rotules also present.
Remarks
Morphotraits of the presently described Thai material match previous descriptions and the type material (Table 1), except for the absence of strongyles in the present material. For terminology we refer to Manconi & Pronzato (2002, 2016).
description: Published as part of Ruengsawang, Nisit, Sangpradub, Narumon, Artchawakom, Taksin, Pronzato, Roberto & Manconi, Renata, 2017, Rare freshwater sponges of Australasia: new record of Umborotula bogorensis (Porifera: Spongillida: Spongillidae) from the Sakaerat Biosphere Reserve in Northeast Thailand, pp. 1-24 in European Journal of Taxonomy 260 on pages 5-8, DOI: 10.5852/ejt.2017.260, http://zenodo.org/record/3776351