Conopea cymbiformis (Darwin, 1854)

Pitriana, Pipit, Jones, Diana S., Corbari, Laure & Rintelen, Kristina von, 2020, New insights gained from museum collections: Deep-sea barnacles (Crustacea, Cirripedia, Thoracica) in the Museum National d'Histoire Naturelle, Paris, collected during the Karubar expedition in 1991, Zoosystematics and Evolution 96 (2), pp. 649-698 : 649

Conopea cymbiformis (Darwin, 1854) Figure 33

Balanus cymbiformis Darwin, 1854: 221, pl. 3, fig. 5a, b. - Broch 1931: 85, fig. 29a, b. - Nilsson-Cantell 1938: 55, pl. 2, fig. 3. - Utinomi 1962: 219, fig. 2. - Dong et al. 1982: 103.

Balanus proripiens Hoek, 1913: 228, pl. 24, figs 1-3, pl. 24, figs 1-3. - Nilsson-Cantell 1921: 331, fig. 70c, d.

Pyrgoma jedani Hoek, 1913: 262, pl. 27, figs 3-8.

Conopea cymbiformis . - Newman & Ross, 1976: 55.

Material examined.

- Kei Islands: 9 specimens, MNHN-IU-2019-4823, Stn. DW 30, 05°39'S, 132°56'E, 111-118 m depth, 26 October 1991; 1 specimen, MNHN-IU-2019-4824, Stn. DW 22, 05°22'S, 133°01'E, 82 m depth, 25 October 1991.

Diagnosis.

Shell irregularly conical; orifice oval with swollen border; basis irregularly cup-formed; scutum and tergum triangular, not calcified together; spur of tergum feebly developed.

Description.

Shell yellowish with orange rust-brown in proximal areas. Carina, carinolatera and latera with pale orange-brown and rust red-brown longitudinal stripes, latter may have oblique white spots. Radii with pale orange-brown and rust red-brown horizontal striation. Opercular plates with scutum pink-brown, transparent; tergum transparent white. Shell may appear longer and lower, due to elongation of carina and rostrum or low and comparatively shorter, due to development of rostrum alone or more upright and comparatively higher, with neither carina nor rostrum elongated. Cirrus I with unequal rami (anterior ramus: 7-segmented; posterior ramus: 12-segmented). Cirri II-VI with equal rami, numerous segments. Penis very long, delicate hairs scattered over surface, a few more disposed near tip. Labrum deeply notched, two small teeth on each side of notch. Mandibles with five teeth, inferior angle not distinctly separated from fifth; distance between tips of first and second teeth slightly more than that between those of second and third teeth; third tooth larger; fourth and fifth smaller than others. Maxillule with straight edge and numerous large setae. Measurements of specimen: basal length of shell 7.73 mm, orifice length 4.60 mm, carinal height 8.70 mm, orifice width 3.88 mm, basal width 4.94 mm.

Distribution.

Indo-west Pacific: Indian Ocean; Gulf of Aden, India, east to Fiji and NW to Indonesia, N Australia, Malay Arch.; China; Philippines; S Japan; Fiji Is; attached to coenosarc of gorgonians or antipatharians; littoral-453 m depth ( Jones and Hosie 2016). In this study, Conopea cymbiformis was found at Kei Islands, Indonesia.

Type locality.

Near Madras, India; attached to a gorgonian ( Darwin 1854).

Figures

Figure 33. Conopea cymbiformis (Darwin, 1854) (MNHN-IU- 2019 - 4823). a. left lateral view; b. right lateral view; c. view from above; d. basal view. Scale bar: 3 mm (a-d).