Anablepsoides falconi Nielsen & Hoetmer & Vandenkerkhove 2023, new species
Creators: name: Nielsen, Dalton Tavares Bressane
name: Hoetmer, Jan Willem
name: Vandenkerkhove, Eric
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Cyprinodontiformes
Rivulidae
Anablepsoides
Anablepsoides falconi

description: Anablepsoides falconi, new speciesurn:lsid:zoobank.org:act: DA1FA018-CBF8-4EBB-BB45-2CE7546D8066
Holotype. ZUEC 17362, male, 41.4 mm SL, Brazil, Acre, Feijó, rio Tarauacá drainage rio Juruá basin, 8°11’1.2”S, 70°30’15.3”W; Eric Vandenkerkhove & Jan Willem Hoetmer, 6 Feb 2018.
Paratypes. All from Brazil, Acre state. ZUEC 17363, 1 male 41.0 mm SL, 1 female 39.9 mm SL, 1 male 41.6 mm SL, c&s, collected with the holotype. ZUEC 17364, 2 males, 46.1–47.1 mm SL, 4 females, 39.9–48.1 mm SL, Tarauacá, rio Acurauá drainage, tributary of the rio Juruá, 8°5’20.2”S, 71°4’57.7”W; Eric Vandenkerkhove & Jan Willem Hoetmer, 6 Feb 2018.
Diagnosis. Anablepsoides falconi is distinguished from all remaining species of the A. limoncochae species group by the color pattern in males, with body sides purplish-yellow, with five longitudinal rows of continuous red spots, the uppermost line formed by large red spots separated, the remaining lines with closely-set dots, forming lines, somewhat less continuous near the caudal peduncle, with only the first, third and fifth red lines extending to the caudal peduncle (vs. lines absent in A. hoetmeri, A. christinae, A. parlettei, A. rubrolineatus, A. limoncochae, and A. taeniatus, 5–6 red dot lines in A. chapare and A. luitalimae, seven orange-red interrupted dot lines in A. lineasoppilatae, seven small red dots forming lines in A. elongatus and A. bibosi, uppermost lines continuous and lowermost lines interrupted and formed by red dots in A. urubuiensis), presence of small filaments in unpaired fins (vs. without filaments), snout short, rounded, and upturned (vs. snout blunt), longitudinal lines with two parallel lines each with 5–6 minute contact organs in the ventral area starting at the pelvic fin base to vertical through the middle of the anal fin (vs. two longitudinal rows of 18–20 contact organs in A. hoetmeri, one longitudinal line with 6 minute contact organs, beginning at the level of the trunk reached by tip of the pectoral fin and ending at the level of the anal fin in A. luitalimae, three longitudinal lines with 10, 8 and 5 minute contact organs, beginning posterior to tip of pectoral fin and ending at level of middle portion of anal fin in A. chapare, 1–3 contact organ on free margin of each scale of antero-ventral portion of flank in A. urubuiensis), in males. Additionally, the new species can be distinguished from congeners by a lower number of pectoral rays (11 vs. 12–15), and a lower number of transverse scales rows (8 vs. 9–12, except A. urubuiensis).
Etymology. The specific names honors the musician, photographer, and environmentalist Francisco Falcon.
description: Published as part of Nielsen, Dalton Tavares Bressane, Hoetmer, Jan Willem & Vandenkerkhove, Eric, 2023, Validation of Anablepsoides katukina Nielsen, Hoetmer & Vandenkerkhove, Anablepsoides falconi Nielsen, Hoetmer & Vandenkerkhove, and Laimosemion anitae Nielsen, Hoetmer & Vandenkerkhove (Cyprinodontiformes: Rivulidae) from western Amazon basin, Acre state, Brazil, pp. 298-300 in Zootaxa 5323 (2) on page 299, DOI: 10.11646/zootaxa.5323.2.10, http://zenodo.org/record/8204097