taxonID	type	description	language	source
11452501CD24D83EE9D4FD7A434FFB6B.taxon	diagnosis	Diagnosis. Body elongate and slender. Segmentation of body indistinct. Cephalosome triangular, with prominent posterolateral expansions in dorsal view. Urosome 4 - segmented in female and 5 - segmented in male. Caudal ramus with six setae. Antennule 7 - segmented. Antenna 4 - segmented; third segment with three setae; fourth segment tipped with one well developed terminal claw. Mandible weakly bilobate along inner margin and with large process on convex side. Maxillule with four setae. Maxilla 2 - segmented; second segment terminating in distal lash. Maxilliped 3 - segmented in female; 4 - segmented in male. Legs 1 – 4 biramous with 3 - segmented exopods and 1 - (leg 4) or 2 - segmented endopods (legs 1 – 3). Leg 5 reduced, represented by three setae. Leg 6 represented by two setae. No sexual dimorphism in legs 1 – 4.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD24D83EE9D4FD7A434FFB6B.taxon	materials_examined	Type species. Alienigena triangula gen. et sp. nov. (by original designation).	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD24D83EE9D4FD7A434FFB6B.taxon	etymology	Etymology. The generic name is derived from the Latin “ Alienigena ”, meaning stranger. It refers to the most remarkable and unique features such as the body shape and armature of legs 1 – 4 in the type species. Gender feminine.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD24D839E9D4FABC40F9FED1.taxon	materials_examined	Type host. Pavona explanulata (Lamarck, 1816) (family Agariciidae). Location in the host. Inside polyps. Type locality. Yenliao Bay, northern Taiwan.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD24D839E9D4FABC40F9FED1.taxon	etymology	Etymology. The specific name triangula is an adjective based on the Latin “ triangulus ”, meaning triangular, and refers to the triangular form of cephalosome of the new species.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD24D839E9D4FABC40F9FED1.taxon	materials_examined	Type material. Nine females and five males obtained from washings of a coral colony collected at five m depth on 12 August 2010. The female holotype (NTUIO-COPE 1), male allotype (NTUIO-COPE 2), and paratypes (NTUIO-COPE s 3; five females and three males) are deposited in the Institute of Oceanography, National Taiwan University, Taipei, Taiwan.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD24D839E9D4FABC40F9FED1.taxon	description	Description of female. Body (Fig. 1 A – B) elongate. Body length of dissected specimen 0.88 mm (0.74 – 0.98 mm) and greatest width 0.13 mm (0.11 – 0.16 mm), based on five specimens. Segmentation of body distinct, but incomplete. Cephalosome (Fig. 1 A – B) triangular, with prominent posterolateral expansions in dorsal view and fused to first pedigerous somite (leg 1). Urosome (Fig. 1 C) 4 - segmented. Genital double-somite (Fig. 1 C) fused to fifth pedigerous somite, with genital apertures located dorsally. Abdomen (Fig. 1 C) 3 - segmented, first somite largest, third (anal) somite with prominent rounded anal operculum. Caudal ramus (Fig. 1 C – D) small, armed with six naked setae. Surface of body without setules (Fig. 1 A, B). Egg sacs not observed. TABLE]. Poecilostomatoid copepods associated with scleractinian host corals of the genus Pavona.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD24D839E9D4FABC40F9FED1.taxon	description	Legs 1 – 4 (Figs. 1 K, 2 A – C) with 3 - segmented exopods and 2 - segmented endopods (except for leg 4 endopod being 1 - segmented). Armature formula of spines (in Roman numerals) and setae (in Arabic numerals) as follows: Coxa Basis Exopod Endopod Leg 1 0 - 0 1 - 0 I- 0; I- 0; IV + 3 0 - 1; I + 5 Leg 2 0 - 0 1 - 0 I- 0; I- 0; IV + 3 0 - 1; III + 2 Leg 3 0 - 0 1 - 0 I- 0; I- 0; IV 0 - 0; I Leg 4 0 - 0 1 - 0 I- 0; I- 0; III I Leg 5 (Fig. 2 D) reduced to two terminal setae and one adjacent dorsal (= outer basal) seta. Leg 6 (Fig. 1 E) represented by two small setae arising from operculum closing off genital aperture. Description of male. Body (Fig. 3 A – B) as in female but much more slender. Surface of body smooth. Body length of dissected specimen 0.87 mm (0.80 – 0.90 mm) and greatest width 0.10 mm (0.09 - 0.12 mm), based on five specimens. Urosome 5 - segmented. Abdomen (Fig. 3 A – B) 4 - segmented, anal somite with rounded operculum as in female. Caudal ramus as in female, but much smaller. Antennule, antenna, mandible, maxillule, and maxilla as in female except for antennule with three additional long aesthetascs (positions indicated by dots in Fig. 1 E). Maxilliped (Fig. 3 C) consisting of three segments and terminal claw; first (syncoxa) and third (endopod) segment unarmed; second segment (basis) broadest, with two equal setae along medial margin and longitudinal rows of small spinules as indicated in Fig, 3 C; terminal claw with one seta near the base. Legs 1 – 4 as in female, without sexual dimorphism. Leg 5 (Fig. 3 A, B, D) a small free segment with two setae and one adjacent dorsal (= outer basal) seta as in female. Leg 6 (Fig. 3 B, E) represented by two small setae on posteroventral operculum on genital somite.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD24D839E9D4FABC40F9FED1.taxon	discussion	Remarks. Members of the family Anchimolgidae are characterized by the derived form of the mandible, exhibiting a bilobed inner margin, and by the possession of a single terminal claw on the distal segment of the antenna (Humes & Boxshall 1996; Boxshall & Halsey 2004). Based on these two characters, Alienigena triangula gen. et sp. nov. is here placed in the Anchimolgidae. Humes & Boxshall (1996) classified the 24 anchimolgid genera known at that time in five distinct generic groups characterized by the segmentation of the antenna and by the form and ornamentation of the armature of the maxilla, i. e. Amarda - group, Anchimolgus - group, Andrianellus - group, Odontomolgus - group and Schedomolgus - group. The Odontomolgus - group currently consists of four genera, Allopodion Humes, 1978, Haplomolgus Humes & Ho, 1968, Odontomolgus, and Kawanolus Humes, 1978, all of which have a large process along the convex margin of the mandible (Boxshall & Halsey 2004). The presence of a similarly large process along the convex margin of the mandible in Alienigena gen. nov. indicates a close relationship to the genera of the Odontomolgus - group. However, the elongate body shape of A. triangula gen. et sp. nov. is radically divergent from that in the other genera of this generic grouping and the armature formulae of legs 1 – 4 also seems to be unique among the currently known genera of the Anchimogidae. Hence, a new genus is proposed herein to accommodate this new form.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD23D836E9D4FE7347CCF870.taxon	materials_examined	Type host. Pavona explanulata (Lamarck, 1816) (family Agariciidae). Location in host. Surface of colony. Type locality. Yenliao Bay, Taiwan.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD23D836E9D4FE7347CCF870.taxon	etymology	Etymology. The specific name is derived from the Latin “ cognatus ”, meaning relative, and refers to the close relationship of this new species to its congener, Odontomolgus actinophorus (Humes & Frost, 1964).	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD23D836E9D4FE7347CCF870.taxon	materials_examined	Type material. Three females and two males obtained from washings of a coral colony collected at five m depth on 12 August 2010. The female holotype (NTUIO-COPE 3), male allotype (NTUIO-COPE 4), and paratypes (NTUIO-COPE s 5; one female and one male) are deposited in the Institute of Oceanography, National Taiwan University, Taipei, Taiwan.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD23D836E9D4FE7347CCF870.taxon	description	Description of female. Body (Fig. 4 A – B) relatively broad. Body length of dissected specimen 1.70 mm (1.69 – 1.72 mm) and greatest width 0.62 mm (0.61 – 0.62 mm), based on three specimens. Cephalosome partially delimited from first pedigerous somite by dorsal suture line (Fig. 4 A – B). Urosome (Fig. 4 A – C) 5 - segmented. Genital double-somite (Fig. 4 C) with transverse suture dorsally but fused laterally and ventrally; anterior half with lateral expansions in dorsal view. Genital apertures (Fig. 4 A – C) located dorsally in first third of double-somite. Three postgenital somites unornamented and equal in length. Caudal ramus (Fig. 4 C – D) 185 × 55 µm, with six naked setae. Surface of body with small setules (Fig. 4 A). Egg sacs not observed. Antennule (Fig. 4 E) 7 - segmented; armature: 4, 13, 6, 3, 4 + 1 aesthetasc, 2 + 1 aesthetasc, 7 + 1 aesthetasc; all setae naked. Antenna (Fig. 4 F) 4 - segmented; armature: 1, 1, 3, I; measurements (length × width) of segments 78 × 63 µm, 156 × 63 µm, 63 × 34 µm, 47 × 25 µm, respectively; terminal claw 63 µm long and slightly curved. Mandible (Fig. 4 G) with prominent proximal notch; inner margin distinctly bilobate; convex side with a digitate process; terminal lash slender, with spinules on both sides. Maxillule (Fig. 4 H) armed with three plumose apical setae. Maxilla (Fig. 4 I) 2 - segmented, first segment unarmed; second segment terminating in distal lash bearing setules; with one nodular tubercle near base of lash, one inner seta transformed to globular tubercle covered with minute setules, one spiniform anterior seta, and one small proximal seta. Maxilliped (Fig. 4 J) 3 - segmented, syncoxa unarmed; basis with two unequal setae (larger one about 21 µm) along medial margin; small endopodal segment with one relatively large spiniform process, one small subapical inner seta, and one bipinnate spine. Legs 1 – 4 (Fig. 5 A – D) with 3 - segmented exopods and endopods (except for leg 4 endopod being 2 - segmented). Armature formula of spines (in Roman numerals) and setae (in Arabic numerals) as follows: Coxa Basis Exopod Endopod Leg 1 0 - 1 1 - 0 I- 0; I- 1; IV + 4 0 - 1; 0 - 1; I + 5 Leg 2 0 - 1 1 - 0 I- 0; I- 1; IV + 5 0 - 1; 0 - 2; III + 3 Leg 3 0 - 1 1 - 0 I- 0; I- 1; IV + 5 0 - 1; 0 - 2; III + 2 Leg 4 0 - 1 1 - 0 I- 0; I- 1; IV + 5 0 - 1; II Leg 5 (Fig. 5 E) 190 × 75 µm, consisting of an unornamented free segment bearing two unequal apical setae and a small adjacent dorsal (= outer basal) seta. Leg 6 (Fig. 4 C) represented by two small setae arising from operculum closing off genital aperture. Description of male. Body (Fig 6 A – B) resembling that of female. Body length 1.61 mm (1.54 – 1.68 mm) and greatest width 0.51 mm (0.48 – 0.54 mm), based on two specimens. Urosome (Fig. 6 A) 6 - segmented. Caudal ramus as in female. Antennule, antenna, mandible, maxillule, and maxilla as in female, except for antennule with three additional long aesthetascs (positions indicated by dots in Fig. 4 E) and antenna with additional spinules on medial surface of basis (Fig. 6 B). Maxilliped (Fig. 6 C) consisting of three segments and terminal claw; syncoxa broadest, unarmed; basis with two unequal inner setae and longitudinal rows of small spinules as figured; endopodal segment very short and unarmed; terminal claw evenly curved, with two unequal setae at its base. Legs 1 – 4 as in female except for leg 1 (Fig. 6 D); third endopodal segment of leg 1 armed with two spines and four setae instead of one spine and five setae in female. Leg 5 (Fig. 6 A) a small free segment with two setae and one adjacent dorsal (= outer basal) seta as in female. Leg 6 (Fig. 6 A) represented by two small setae on posteroventral operculum on genital somite.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD23D836E9D4FE7347CCF870.taxon	discussion	Remarks. Odontomolgus is one of the most speciose genera in the Anchimolgidae, currently accommodating 17 valid species (Walter & Boxshall 2014). Kim (2006) pointed out that the transformation of the inner seta on the second segment of the maxilla into a hairy globule or a mucus-like structure is not a diagnostic feature of the genus Odontomolgus since it is only displayed by three other species so far: O. actinophorus, O. mucosus Kim, 2006 and O. unioviger Kim, 2006. Odontomolgus cognatus sp. nov. can be readily distinguished from these three congeners by the larger body size (1.70 mm) and the armature of the third exopodal segment of leg 4 being IV + 5 instead of III + 5. The remaining dissimilarities among these species are summarized in Table 2. O. O. cognatus O. mucosus O. mucosus O. unioviger	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD23D836E9D4FE7347CCF870.taxon	description	actinophorus (Taiwan) (Moluccas) Body size ♀ (mm) 1.42 1.70 1 0.91 0.82 Armature of maxillule 3 plumose setae 3 plumose 1 naked and 3 4 naked setae 1 naked and 3 setae plumose setae plumose setae Armature of third exopodal segment III + 5 IV + 5 III + 5 III + 5 III + 5 of leg 4 Armature of caudal ramus plumose setae naked setae plumose setae plumose setae plumose setae	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD2ED834E9D4FF1941C5FCEF.taxon	description	New host. Pavona explanulata (Lamarck, 1816) (family Agariciidae). Locality in host. Surface of colony. Locality. Off Yenliao, Taiwan.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD2ED834E9D4FF1941C5FCEF.taxon	materials_examined	Material examined. Seven females and two males obtained from washings of a coral colony collected at five m depth on 12 August 2010.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD2ED834E9D4FF1941C5FCEF.taxon	discussion	Remarks. Kim (2006) recently described two new species, O. mucosus and O. unioviger, based on specimens associated with the scleractinian coral, Gardineroseris planulata (Dana, 1846) collected in the Moluccas. The differences between these species include (1) the shape of the genital double-somite of the female, (2) the size of the caudal ramus, and (3) the size of the free segment (exopod) of leg 5 in the female. The body form of the female and male specimens collected from the coral P. explanulata in Taiwanese coastal waters are similar to those of the two species collected from the Moluccas (Fig. 7 A, H). A similar concordance can also be observed in the antennule (Fig. 7 B), mandible (Fig. 7 C), maxilla (Fig. 7 E), and maxilliped (Fig. 7 F). However, slight differences were noted between the Taiwanese and the Moluccan material, particularly in body size, the ornamentation of the maxillulary setae and leg 5 exopod, and in the dimensions of the caudal ramus and leg 5 (Table 2). Such minute dissimilarities probably reflect local variation in geographically separated populations rather than providing evidence for specific distinctiveness. Pending analysis of molecular sequence data the Taiwanese and Moluccan specimens are considered conspecific despite the different coral hosts they utilize.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD2ED830E9D4FC6743C3FAEC.taxon	materials_examined	Type host. Pavona explanulata (Lamarck, 1816) (family Agariciidae). Location in host. Surface of colony. Type locality. Yenliao Bay, northern Taiwan.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD2ED830E9D4FC6743C3FAEC.taxon	etymology	Etymology. The specific name “ subgeminus ” refers to the similarity between body shape of this new species and its congener, Sociellus geminus Kim, 2006.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD2ED830E9D4FC6743C3FAEC.taxon	materials_examined	Type material. Eighteen females and eight males obtained from washings of a coral colony collected at five m depth on 12 August 2010. The female holotype (NTUIO-COPE 7), male allotype (NTUIO-COPE 8), and paratypes (NTUIO-COPE s 9; 15 females and five males) are deposited in the Institute of Oceanography, National Taiwan University, Taipei, Taiwan.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
11452501CD2ED830E9D4FC6743C3FAEC.taxon	description	Description of female. Body (Fig. 8 A – B) elongate and slender. Length 0.94 mm (0.92 – 0.96 mm) and greatest width 0.23 mm (0.19 – 0.24 mm), based on five specimens. Cephalosome delimited from first pedigerous somite by dorsal furrow. Cephalosome 273 × 233 µm, long than wide. Measurements (length × width) of first to fifth pedigerous somites 75 × 206 µm, 64 × 187 µm, 56 × 193 µm, 54 × 163 µm, and 50 × 150 µm, respectively. Urosome (Fig. 8 C) 5 - segmented. Genital double-somite in dorsal view 130 × 160 µm. Genital apertures located dorsally near middle of double-somite. Three postgenital somites 56 × 100 µm, 62 × 78 µm, and 50 × 68 µm, respectively. Anal operculum projecting posteriorly (Fig. 8 B). Caudal ramus (Fig. 8 D) 50 × 18 µm, with six naked setae and several minute spinules. Surface of body with small setules (Fig. 8 C). Egg sacs not observed. Antennule (Fig. 8 E) 7 - segmented; armature: 3, 10, 6, 3, 4 + 1 aesthetasc, 2 + 1 aesthetasc, 7 + 1 aesthetasc; all setae naked. Antenna (Fig. 8 F) 4 - segmented; armature formula 1, 1, 1, I. Mandible (Fig. 8 G) with prominent proximal notch; inner margin distinctly bilobate; convex side with strongly tapering process; terminal lash slender with spinules. Maxillule (Fig. 8 H) with two plumose apical setae, one plumose subapical seta, and one minute spiniform element laterally. Maxilla (Fig. 8 I) 2 - segmented, first segment unarmed; second segment with lash showing three small serrations along convex margin, one small spiniform element, one relatively large anterior seta, and one plumose inner sea. Maxilliped (Fig. 8 J) 3 - segmented, syncoxa unarmed; basis with two setae along medial margin; small endopodal segment with one large spiniform process bearing spinules along outer side, one spine and one minute subapical seta. Legs 1 – 4 (Fig. 9 A – D) with 3 - segmented exopods and endopods (except for leg 4 endopod being 2 - segmented). Legs 1 – 2 lacking inner coxal seta. Formula of spines (in Roman numerals) and setae (in Arabic numerals) as follows: Leg 5 (Fig. 9 E) with unornamented free segment, bearing two apical setae and small adjacent dorsal (= outer basal) seta. Leg 6 (Fig. 9 F) represented by two small setae arising from operculum closing off genital aperture. Description of male. Body (Fig. 10 A – B) elongate, slender, similar in shape to that of female. Length 0.74 mm (0.71 – 0.79 mm) and greatest width 0.19 mm (0.18 - 0.19 mm), based on five specimens. Caudal ramus as in female. Antennule, antenna, mandible, maxillule and maxilla as in female except for antennule with three additional long aesthetascs (positions indicated by dots in Fig. 8 E). Maxilliped (Fig. 10 C) 4 - segmented, syncoxa broadest, unarmed; basis with two unequal setae and spinules near medial margin; first endopodal segment very short and unarmed; second endopodal segment represented by large claw, bearing two setae at its base. Legs 1 – 4 as in female except for leg 1 (Fig. 10 D); third exopodal segment of leg 1 armed with three spines and five setae instead of four spines and four setae in female. Leg 5 (Fig. 10 A – B) small free segment (exopod) with two setae and one adjacent dorsal (= outer basal) seta as in female. Leg 6 (Fig. 10 A – B) represented by two small setae on posteroventral operculum on genital somite. Remarks. The genus Sociellus currently contains only two species: Sociellus torus Humes, 1992 from the Great Barier Reef, northeastern Australia and Sociellus geminus from the Moluccas. Both species utilize the scleractinian host Gardineroseris planulata (Humes 1992; Kim 2006). Sociellus subgeminus sp. nov. differs from its two congeners by the differences summarized in Table 3. S. geminus S. torus S. subgeminus sp. nov. Body size (mm) 0.97 0.75 – 0.82 0.92 – 0.96 Armature of second segment of antenna 3 setae 3 setae 1 seta Armature of maxillule 4 setae 2 setae 4 setae Armature of first endopodal segment of leg 1 0 - 0 0 - 0 0 - 1 Armature of third endopodal segment of leg 1 I + 2 or I + 3 I + 2 I + 5 Armature of third exopodal segment of leg 2 IV + 4 IV + 4 IV + 5 Armature of first endopodal segment of leg 2 0 - 0 0 - 0 0 - 1 Armature of second endopodal segment of leg 2 0 - 2 0 - 2 0 - 1 Armature of third exopodal segment of leg 3 IV + 2 IV + 1 IV + 4 Leg 3 endopod 3 - segmented 2 - segmented 3 - segmented Armature of third exopodal segment of leg 4 III + 3 or IV + 3 III + 2 III + 4 Leg 4 endopod 2 - segmented 1 - segmented 2 - segmented Humes & Boxshall (1996) placed Sociellus in the Rhynchomolgidae, presumably because the type species S. torus displayed a mandible with a linear inner margin (cf. Humes 1992: Fig. 10). Kim (2006) proposed that the genus Sociellus should be placed in the family Anchimolgidae since the second species of the genus, S. geminus, exhibits the typical anchimolgid type of mandible with a distinctly bilobate inner margin, suggesting that Humes’ (1992) description is inaccurate. The position of Sociellus in the Anchimolgidae is further corroborated by the mandibular morphology of S. subgeminus sp. nov. The presence of a large process on the convex margin of the mandible in all three members of Sociellus suggests that the genus is closely related to the genera of the Odontomolgus - group.	en	Cheng, Yu-Rong, Ho, Ming-Jay, Dai, Chang-Feng (2016): Four anchimolgid copepods (Poecilostomatoida: Anchimolgidae) associated with the scleractinian coral Pavona explanulata (Lamarck, 1816) in Taiwan. Zootaxa 4174 (1): 274-290, DOI: 10.11646/zootaxa.4174.1.19
