VAN SYOC ET AL.: SEVEN NEW BARNACLES FROM THE PHILIPPINES 
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Systematics 
Subclass Cirripedia Burmeister, 1834 
Superorder Thoracica Darwin, 1854 
Order Sessilia Lamarck, 1818 
Suborder Balanomorpha Pilsbry, 1916 
Superfamily Balanoidea Leach, 1817 
Family Archaeobalanidae Newman and Ross, 1976 
Genus Conopea Say, 1822 
Obligate symbionts of octocorals or antipatharians. Basis of shell firmly attached to the axis 
of the host by direct calcification on and around part of the axis. Shell overgrown by coenenchyme 
of the octocoral or antipatharian host. However, the shell is not overgrown by the proteinaceous 
axis material of the host. Shell composed of 4-6 wall plates. 
Conopea willhearsti Van Syoc, Carrison-Stone, Madrona, and Williams, sp. nov. 
Figures 1-4, Table 1 
Material examined.— Holotype; CASIZ 191932, whole specimen attached to host 
Melithaea sp. in 95% EtOH. Locality: Philippines, Batangas Province, Culebra Island. 
13.60000°N., 120.94700°E. Attached to Melithaea sp. HEP-74. Depth: 6 meters Collector: Robert 
Van Syoc, 16 May 2011. Paratypes: CASIZ 185242, 12 whole, 2 dissected specimens in 95% 
EtOH. Locality: Philippines, Batangas Province, Culebra Island. 13.60000°N., 120.94700°E. 
Attached to Melithaea sp. HEP-74. Depth: 6 meters Collector: Robert Van Syoc, 16 May 
2011;CASIZ 104031, 3 whole, 2 dissected specuTiens in 95% EtOH. Locality: Philippines, Min¬ 
doro, Sabang, Escarceo Point. Attached to Acabaria sp. Depth: 23 meters. Collector: Gary 
Williams, 1 March 1995; CASIZ 111792, 2 whole, 3 dissected specimens in 95% EtOH. Locality: 
Philippines, Batangas Province, Maricaban Island, “Bethlehem” dive site. Attached to Acabaria sp. 
Depth: 5-21 meters. Collector: Gai*y Williams, 21 April 1997; CASIZ 111822, 7 whole, 8 dissect¬ 
ed specimens in 95% EtOH, SEM stub with opercular plates, microslide with cinn and mouthparts. 
Locality: Philippines, Batangas Province, Maricaban Island, Kirby’s Rock dive site. Attached to 
Acabaria sp. Depth: 9-30 meters Collector: Gaty Williams, 19 April 1997; CASIZ 185241, 14 
whole, 1 dissected specimens in 95% EtOH, SEM stub with opercular plates, microslide with cirri 
and mouthparts. Locality: Philippines, Batangas Province, Maricaban Island, Devil’s Point dive 
site. 13.65084°N., I20.84145°E. Attached to Acabaria sp. HEP-41 Depth: 24 meters. Collector: 
Robert Van Syoc, 7 May 2011; CASIZ 185882, 2 whole, 4 dissected specimens in 95% EtOH. 
Locality: Philippines, Batangas Province, Maricaban Island, Devil’s Point dive site. 13.65084°N., 
120.84145°E. Attached to Acabaria sp. HEP-41 Depth: 24 meters. Collector: Robert Van Syoc, 7 
May 2011; CASIZ 185884, 1 dissected specimen in 95% EtOH. Locality: Philippines, Batangas 
Province, Ligpo Island, “Ligpo South” dive site. 13.81920°N., 120.90043°E. Attached to Mopsel- 
la sp. FIEP-97 Depth: 21 meters. Collector: Robert Van Syoc, 22 May 2011; CASIZ 185899, 1 dis¬ 
sected specimen in 95% EtOH. Locality: Philippines, Batangas Province, Calumpan Peninsula, 
Balayan Bay, “Koala” dive site. 13.71682°N., 120.87236°E. Attached to Mopsella sp. Collector: 
Dito de la Rosa, 22 May 2011; CASIZ 185900, 2 whole, 2 dissected specimens in 95% EtOH. 
Locality: Philippines, Batangas Province, Culebra Island. 13.62978°N., 120.94738°E. Attached to 
Acabaria sp. HEP-95 Collector: Robert Van Syoc, 21 May 2011; CASIZ 187665, about 30 whole, 
2 dissected specimens in 95%EtOH. Locality: Philippines, Batangas Province, Maricaban Island, 
