Latrunculia du Bocage, 1869

Kelly, Michelle, Sim-Smith, Carina, Stone, Robert, Reiswig, Toufiek Samaai Henry & Austin, William, 2016, New taxa and arrangements within the family Latrunculiidae (Demospongiae, Poecilosclerida), Zootaxa 4121 (1), pp. 1-48 : 5

Subgenus Latrunculia du Bocage, 1869

Diagnosis. Latrunculia species in which the anisodiscorhabd microscleres have six visibly distinct substructures: the manubrium, basal whorl, median whorl, subsidiary whorl, apical whorl, and apex (modified from Samaai et al. 2006).

Remarks. Species in this subgenus are easily recognisable by examination of the number of whorls and the degree of fusion between the various substructures in the anisodiscorhabds. Figure 1 A illustrates the diagnostic microscleres that define subgenus Latrunculia . In subgenus Latrunculia , there are three distinct whorls of projections around the shaft, between the manubrium and the apex. In the majority of species, the basal whorl is clearly separated from the manubrium, however, in some of the spicules of a few species, these structures are less well separated from each other (see Hajdu et al. 2013). Figure 16 A–P illustrate the diagnostic anisodiscorhabds for living species of the subgenus Latrunculia (Latrunculia) .

Figures

FIGURE 1. Comparison of microsclere morphology in family Latrunculiidae (not to scale): A. Anisodiscorhabd form in subgenus Latrunculia (Latrunculia) du Bocage, 1869 (type species L. (L.) bocagei Ridley & Dendy, 1886), showing the six substructures that characterise the anisodiscorhabds, whether differentiated or undifferentiated: m = manubrium, bw = basal whorl, mw = median whorl, sw = subsidiary whorl, aw = apical whorl, a = apex; B. Anisodiscorhabd form in subgenus Latrunculia (Biannulata) Samaai, Gibbons & Kelly, 2006 (type species L. (B.) kaakaariki Alvarez et al., 2002); C. Anisodiscorhabd form in subgenus Latrunculia (Uniannulata) subgen. nov. (type species L. (U.) oparinae Samaai & Krasokhin, 2002); D. Isospinodiscorhabd in genus Cyclacanthia Samaai, Govender & Kelly, 2004 (type species C. bellae (Samaai, Gibbons, Kelly & Davies-Coleman, 2003); E. Isochiadiscorhabd in genus Tsitsikamma Samaai & Kelly, 2002 (type species T. favus Samaai & Kelly, 2002); F. Anisodiscorhabd and amphiclad sceptre in genus Sceptrella Schmidt, 1870 (type species Sceptrella regalis Schmidt, 1870); G. Short anisodiscorhabd and long anisoconicorhabd in genus Latrunclava gen. nov. (type species L. imago gen. et sp. nov.); H. Anisodiscorhabd in genus Bomba gen. nov. (type species B. endeavourensis gen. et sp. nov.). Fig. 1 A, B, D modified and reproduced from Samaai et al. (2006), Samaai et al. (2004) and Samaai et al. (2003), respectively, with permission from Zootaxa (Magnolia Press). Fig. 1 E, F modified with permission from T. Samaai.

FIGURE 16. Comparison of diagnostic anisodiscorhabds in living species of Latrunculia (Latrunculia) du Bocage, 1869, Latrunculia (Biannulata) Samaai, Gibbons & Kelly, 2006, and Latrunculia (Uniannulata) subgen. nov., not to scale: A. L. (L.) triverticillata Alvarez, Bergquist & Battershill, 2002; B. L. (L.) fiordensis Alvarez, Bergquist & Battershill, 2002; C. L. (L.) oxydiscorhabda Alvarez, Bergquist & Battershill, 2002; D. L. (L.) cratera du Bocage, 1869; E. L. (L.) bocagei Ridley & Dendy, 1886; F. L. (L.) basilis Kirkpatrick, 1908; G. L. (L.) brevis Ridley & Dendy, 1886; H. L. (L.) palmata Lévi, 1964; I. L. (L.) ikematsui Tanita, 1968; J. L. (L.) novaecaledoniae Samaai et al., 2006; K. L. (L.) austini Samaai et al., 2006; L. L. (L.) hamanni sp. nov.; M. L. (L.) ciruela Hajdu et al., 2013; N. L. (L.) copihuensis Hajdu et al., 2013; O. L. (L.) verenae Hajdu et al., 2013; P. L. (L.) yepayek Hajdu et al., 2013; Q. L. (B.) kaakaariki Alvarez, Bergquist & Battershill, 2002; R. L. (B.) duckworthi Alvarez, Bergquist & Battershill, 2002; S. L. (B.) procumbens Alvarez, Bergquist & Battershill, 2002; T. L. (B.) wellingtonensis Alvarez, Bergquist & Battershill, 2002; U. L. (B.) kaikoura Alvarez, Bergquist & Battershill, 2002; V. L. (B.) millerae Alvarez, Bergquist & Battershill, 2002; W. L. (B.) spinispiraefera Brøndsted, 1924; X. L. (B.) purpurea Carter, 1881; Y. L. (B.) lunaviridis Samaai, Gibbons, Kelly & Davies-Coleman, 2003; Z. L. (B.) microacanthoxea Samaai, Gibbons, Kelly & Davies-Coleman, 2003; AA. L. (B.) gotzi Samaai, Janson & Kelly, 2012; AB. L. (B.) kerwathi Samaai Janson & Kelly, 2012; AC. L. (B.) algoaensis Samaai Janson & Kelly, 2012; AD. L. (B.) janeirensis Cordonis, Moraes & Muricy, 2012; AE. L. (B.) lincfreesi sp. nov.; AF. L. (B) triloba (Schmidt, 1875); AG. L. (U.) oparinae Samaai & Krasokhin, 2002; AH. L. (U.) velera Lehnert et al., 2006. Fig. 16 A – J, Q – AC reproduced with permission from Zootaxa (Magnolia Press) from Fig. 6 in Samaai et al. (2012), Fig. 16 M – P reproduced with permission from Zootaxa from Fig. 9 in Hajdu et al. (2013), Fig. 16 AD reproduced with permission from Dr Guliherm Muricy, and Fig. 16 AH reproduced with permission from Zootaxa.