Hydroides crucigera

Bastida-Zavala, J. Rolando, Buelna, Alondra Sofía Rodríguez, León-González, Jesús Angel De, Camacho-Cruz, Karla Andrea & Carmona, Isabel, 2016, New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific, Zootaxa 4184 (3), pp. 401-457 : 409-410

Crucigera websteri Benedict, 1887

( Figures 3 , 10 H–I)

Crucigera Websteri Benedict, 1887 : 550–551, pl. 21, Figs 24–25; pl. 22, Figs 26–30. Type locality: 29º16’30”N, 85º32’W, off Florida, USA, sta. 2369, 43.5 m.

Serpula (Crucigera) websteri .— Monro 1928: 101 ( Taboga Island , Panamá, 7–9 m, on sand and rocks); Monro 1933b: 1079 – 1080 (Taboga Island, Panamá, 2–4 m, on dead broken coral); Salazar-Vallejo & Londoño-Mesa 2004: 55 (Tropical Eastern Pacific, checklist).

Crucigera websteri .— Treadwell 1914: 227 (San Pedro, Southern California); Berkeley & Berkeley 1941: 57 (Newport Bay, Southern California, from “boat bottom”); Hartman 1961: 44 (Southern California, on rocky habitats); Hartman 1969: 751–752, Figs 1–4 (Southern California; figures from Benedict 1887); ten Hove & Jansen-Jacobs 1984: 155–160, Figs 3 a, 4j–l, 5a, 6a–e, 7a–k, 10e, 12 (revision of the genus, from Western Atlantic and Eastern Pacific specimens; 2–86 m) ; de León-González 1990: 336, Fig. 3 a–d ( Punta San Juanico and Cabo San Lázaro, Baja California Sur; 27–30 m) ; Salazar- Vallejo & Londoño-Mesa 2004: 54 (Tropical Eastern Pacific, checklist); Bastida-Zavala 2008: 16–17, fig. 4C–D (Southern California, Baja California Sur, Guerrero and Oaxaca; 0–73 m) ; Bastida-Zavala 2009: 531, Figs 1 G, 5E (identification key for Tropical America); ten Hove & Kupriyanova 2009: 36 (worldwide serpulid checklist); Bastida-Zavala et al. 2013: 349 (Oaxaca, checklist).

Material examined. Eight specimens.

Oaxaca: UMAR-Poly 709 (Corralero Lagoon, on rocks, March 23, 2010, coll. FAG); UMAR-Poly 710, 7 spec. (same, on rocks, April 18, 2013, coll. LLR et al.).

Habitat. Depth: Intertidal to 73 m (Bastida-Zavala 2008); ten Hove & Jansen-Jacobs (1984) recorded 2– 86 m. Occasionally as part of fouling fauna.

Distribution. Amphi-American. From Florida and Gulf of Mexico to Brazil; Southern California ( San Pedro, Newport Bay, Santa Barbara Island), western coast of Baja California Sur (Punta San Juanico and Cabo San Lázaro), Guerrero (Acapulco), Oaxaca (Puerto Escondido), Panamá (Taboga Island) ( Treadwell 1914; Berkeley & Berkeley 1941; ten Hove & Jansen-Jacobs 1984; Bastida-Zavala 2008); also from Humboldt Bay, Northern California (Bastida-Zavala et al. unpublished data); and Corralero Lagoon, Oaxaca (this work).

Remarks. Crucigera websteri is recorded from few localities in the Eastern Pacific . In general, it was represented by few specimens. The record of Treadwell (1914) from San Pedro , California , is evidence that this species has been in the Eastern Pacific before the opening of the Panamá Canal (August, 1914), as his samples were collected in 1912 or before. Bastida-Zavala (2008) revised the Treadwell’s specimen in LACM-AHF (N8819) shown in Figure 10 I.

Fouling records of this species are uncommon, only one specimen has been recorded by Berkeley & Berkeley (1941) from a “boat bottom”, Newport Bay, Southern California; one specimen from “floats and piles…”, Newport Bay (Bastida-Zavala 2008); and one specimen from a fouling plate in Humboldt Bay, Northern California (Bastida- Zavala et al. unpublished data).

Figures

FIGURE 1. Study area. The Tropical Eastern Pacific, Southern California and Hawaii, with main geographical names mentioned in text.

FIGURE 2. Distribution of the sabellids Branchiomma bairdi, Megalomma carunculata, Parasabella pallida and Pseudobranchiomma punctata in the Tropical Eastern Pacific, Southern California and Hawaii.

FIGURE 3. Distribution of Ficopomatus uschakovi, Crucigera websteri, Hydroides cf. amri, H. brachyacantha and H. crucigera.

FIGURE 4. Distribution of Hydroides deleoni, H. dirampha, H. elegans and H. gairacensis..

FIGURE 10. Sabellids and serpulids in the Mexican Pacific. A. Branchiomma bairdi, anterior part; B – C. Megalomma carunculata, anterior part and caruncle; D. Parasabella pallida, anterior part; E – F. Pseudobranchiomma punctata, body and detail of abdominal section; G. Ficopomatus uschakovi, anterior part; H – I. Crucigera websteri, opercula, lateral and aboral side (colors in life and preserved).