Aoridae * Author Myers, Alan A. text Zootaxa 2009 2009-10-08 2260 1 220 278 https://www.biotaxa.org/Zootaxa/article/view/zootaxa.2260.1.9 journal article 10.11646/zootaxa.2260.1.9 1175-5326 5321091 Aoroides parvus sp. nov. ( Figs 3 , 4 ) Type material. Holotype , male 1.8 mm , AM P70701, Watsons Bay , Lizard Island ( 14°39.689'S 145°26.872'E ), scrapings from mooring block, sandy bottom with mounds and Udotea , 8.3 m , P.B. Berents & L. Hughes , 24 February 2005 (QLD 1636) . Paratypes : 3 males , 4 females , AM P75465 (QLD 1636) , 3 males , 9 females , AM P70716 (QLD 1636), same data . Type locality. Watsons Bay , Lizard Island , Queensland , Australia ( 14°39.689'S 145°26.872'E ) . Etymology. Referring to its diminutive size. Description. Based on holotype , male, 1.8 mm , AM P70701. Head. Head lateral cephalic lobes apically round, Antenna 1 flagellum with about 9 articles; accessory flagellum absent. Antenna 2 with few long setae. Lower lip with fine setae only. Maxilla 1 inner plate with 1 long pectinate apical seta. Mandible , palp article 3 longer than 2, posterior margin straight, posterior margin without setae Pereon. Pereonites without sternal spines. Gnathopod 1 enlarged in males only; coxa weakly produced anterodistally; basis slender, less than half as broad as long, without a spine, posterodistal margin with setae absent, anterodistal margin with weak flange; ischium anterior margin without flange, posterodistal margin without setae; merus greatly elongated, distally free and produced along posterior margin of carpus, posterior margin with few setae, without posterodistal spine; carpus longer than propodus, anterior margin without setae, without spine, posterior margin without spines; propodus anterior margin with few setae, posterior margin straight, palm absent; dactylus less than half length of propodus. Gnathopod 2 subchelate; basis anterodistal margin straight, without flange, posterodistal margin without robust setae; merus not enlarged; carpus longer than propodus, anterior margin not lobate, with short, sparse setae; propodus anterior margin with short sparse setae, with robust seta defining palm. Pereopod 3 without brush of long setae on merus. Pereopod 6 basis not or weakly produced posterodistally. Pereopod 7 significantly less than 125% length of pereopod 6. FIGURE 3. Aoroides parvus sp. nov. , holotype, male, 1.8 mm, AM P70701, Watsons Bay, Lizard Island, Great Barrier Reef. Pleon. Epimeron 3 posterodistal margin with small notch. Uropod 1 rami subequal, peduncle much longer than broad, distoventral spine shorter than peduncle. Uropod 2 biramous, inner ramus longer than outer ramus, peduncle with short distoventral spine less than one quarter length of peduncle. Uropod 3 biramous, rami subequal, inner ramus shorter than peduncle. Telson with distal fine setae only. Female (sexually dimorphic characters). Based on paratype , female, 2.1 mm , AM P75465. Gnathopod 1 merus not greatly elongated, not distally free; carpus shorter than that of male, subequal with propodus. Gnathopod 2 more slender than that of male, carpus shorter than propodus . Habitat. Among encrusting flora and fauna on mooring block, over sandy bottom. Remarks. A. parvus differs from most described species of Aoroides by the poorly setiferous male gnathopod 1 and by the very short dactylus of that appendage. It differs from A. nahili J.L. Barnard, 1970 in having the merus of the male gnathopod 1 shorter than the carpus, inward curved and not ending acutely and from A. columnaris Ariyama, 2004 and A. curvipes Ariyama, 2004 in the weakly produced male coxa 1. Distribution. Australia . Queensland : Lizard Island (current study).