FIGURE 4 in New Genus and species of Heteroxyidae from Brazil (Axinellida: Demospongiae: Porifera), with a revised identification key for the family

FIGURE 4. Spicule composition of Alveospongia sinuosclera sp. nov. (UFPEPOR 1597, holotype) in SEM. A, various styles/ strongyloids; B, details of the head and end of styles/strongyloids; C, two acanthomicrostrongyles; D, details of ends of acanthomicrostrongyles; E, detail of surface of acanthomicrostrongyles showing microspination. Scale bars: A: 100 µm; A': 50 µm; B: 10 µm; C: 30 µm; D–E: 4 µm.Published as part of Santos, George Garcia, Pinheiro, Ulisses, Hajdu, Eduardo & Soest, Rob Van, 2016, New Genus and species of Heteroxyidae from Brazil (Axinellida: Demospongiae: Porifera), with a revised identification key for the family, pp. 105-116 in Zootaxa 4158 (1) on page 112, DOI: 10.11646/zootaxa.4158.1.6, http://zenodo.org/record/26145