Terebellidae (Polychaeta: Terebellida) from the Grand Caribbean region 2320 Author Londoño-Mesa, Mario H. text Zootaxa 2009 2009-12-22 2320 1 1 93 https://biotaxa.org/Zootaxa/article/view/zootaxa.2320.1.1 journal article 10.11646/zootaxa.2320.1.1 1175­5334 5316176 Spinosphaera Hessle, 1917 Hessle, 1917:207–209 .— Hartman, 1944:274 .— Londoño-Mesa, 2003:748 , Figs1 A-F. Type species: Spinosphaera pacifica Hessle, 1917 , by original designation. Diagnosis: Branchiae absent; eyespots sometimes present; lateral lappets absent; ventral shields from segment 1 or 2; nephridial papillae from segments 4–10, 12 or even segment 17; pairs of notopodia from segment 4, in variable number; notochaetae bilimbate capillaries on anterior thoracic notopodia (about seven chaetigers), and spinosphaera-chaetae on the rest of notopodia; pairs of neuropodia from segment 5; uncini avicular in single rows from segment 5–10; in double rows, arranged face to face, for some segments before posterior end or to the pygidium. FIGURE 18. Scionides reticulata (Holotype MCZ 840): A. Thoracic region in ventral view. B. Middle region in ventral view. C. Posterior end in lateral view. Terebella turgidula (Holotype MCZ 846): D. Complete specimen. E. Anterior thoracic region in ventral view. F. Fascicle of notochaetae from anterior thoracic region. G. Long notochaeta from anterior thoracic region. H. Short notochaeta from anterior thoracic region. I. Uncinus from anterior thoracic region. J. Uncini in double rows from mid-thoracic region. Scale bars: A,B,C: 2.8mm; D: 23mm; E: 1.5mm; F: 0.4mm; G,H: 0.07mm; I,J: 0.05mm. Remarks: Only two species have been described in the Caribbean , S. carrerai Londoño-Mesa, 2003 , from the southern Mexican Caribbean , and S. hutchingsae Londoño-Mesa, 2003 , from the Mexican Caribbean . Since the genus has been recently revised ( Londoño-Mesa, 2003 ) only a diagnosis is provided here. No additional specimens have been found of this genus, and thus both species are considered rare species in the region.