Yoshida Tomohiro, Motomura Hiroyuki
The United Graduate School of Agricultural Sciences, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan..
Zootaxa. 2018 Jan 31;4377(2):178-190. doi: 10.11646/zootaxa.4377.2.2.
Rhabdamia spilota Allen Kuiter 1994 (Apogonidae), a poorly known cardinalfish previously known only from the Philippines, Indonesia and the Red Sea, is redescribed on the basis of 70 specimens (20.9-61.2 mm standard length) (including types), from the Indo-West Pacific (Red Sea, Andaman Sea, Japan, South China Sea, the Philippines, Indonesia, New Caledonia, and Australia). Because most reports of the similar species R. gracilis (Bleeker 1856), following its original description, were based on misidentifications, R. gracilis is also redescribed (based on 98 Indo-West Pacific specimens from Seychelles, Maldives, Andaman Sea, Japan, Malaysia, Indonesia, New Caledonia, and Australia, 27.9-59.3 mm standard length); a lectotype is designated for it. Rhabdamia spilota differs from R. gracilis in having 27-33 (mode 30-31) developed gill rakers [vs. 22-27 (mode 24) in the latter], 27-33 (30) gill rakers including rudiments [vs. 23-27 (24-25)], a black stripe from the jaw tips to the anterior margin of the orbit (vs. black pigments only at snout and tip of lower jaw), 3-6 reddish brown to blackish blotches on the opercle and anterior of body (vs. blotches absent), and indistinct black pigment restricted to caudal fin outer margins (vs. pigment scattered over entire fin). Rhabdamia gracilis exhibits sexual dichromatism, female specimens larger than 41.3 mm SL having one or two black stripes on the lateral surface of the body; the stripes are absent in males and smaller females. No evidence of sexual dichromatism was found in R. spilota.
横纹天竺鲷（Rhabdamia spilota Allen Kuiter 1994），一种此前仅在菲律宾、印度尼西亚和红海被发现过的鲜为人知的天竺鲷，基于70个标本（标准体长20.9 - 61.2毫米）（包括模式标本）进行重新描述，这些标本采自印度 - 西太平洋地区（红海、安达曼海、日本、中国南海、菲律宾、印度尼西亚、新喀里多尼亚和澳大利亚）。由于相似物种细纹天竺鲷（R. gracilis (Bleeker 1856)）最初描述之后的大多数报告都是基于错误鉴定，因此也对细纹天竺鲷进行了重新描述（基于98个采自塞舌尔、马尔代夫、安达曼海、日本、马来西亚、印度尼西亚、新喀里多尼亚和澳大利亚的印度 - 西太平洋标本，标准体长27.9 - 59.3毫米）；并为其指定了一个选模标本。横纹天竺鲷与细纹天竺鲷的区别在于，前者有27 - 33（模式为30 - 31）个发育完整的鳃耙[后者为22 - 27（模式为24）]，包括雏形鳃耙在内有27 - 33（30）个鳃耙[后者为23 - 27（24 - 25）]，从颌尖到眼眶前缘有一条黑色条纹（后者仅在吻部和下颌尖端有黑色色素），鳃盖和身体前部有3 - 6个红棕色至黑色斑点（后者无斑点），尾鳍外缘有不明显的黑色色素（后者色素散布于整个鳍）。细纹天竺鲷表现出性二态性，标准体长大于41.3毫米的雌性标本身体侧面有一或两条黑色条纹；雄性和较小的雌性没有这些条纹。在横纹天竺鲷中未发现性二态性的证据。
