Adenomera guarani Zaracho & Lavilla & Carvalho & Motte & Basso 2023, sp. nov.

Adenomera guarani sp. nov. urn:lsid:zoobank.org:act: 13EA7E3F-AFF1-4999-985E-EAB9B45109AA Figs 9–12; Tables 2–3 Diagnosis Adenomera guarani sp. nov. is recognized within Adenomera by the following combination of character states: (1) body robust, (2) medium size (adult male SVL = 20.1–26.4 mm); (3) light-colored, broad mid-dorsal stripe with diffuse borders, extending from above the vent to the scapular region; (4) a dark mask-like pattern formed by an inverted triangle in the interorbital region; (5) toe tips unexpanded with tapered point; (6) antebrachial tubercle absent; (7) exotrophic larvae; (8) labial tooth row formula (LTRF): 2(2)/3(1); (9) single-note advertisement call; (10) call notes formed by incomplete pulses; (11) relatively high note repetition rate (73–147 per minute); and (12) low pulse number (4–9 per note). Etymology The specific name guarani, used as a noun in apposition and refers to the Guaraní, a native indigenous group that inhabited in the past a vast region in South America, including areas where the new species occurs. Currently, a few indigenous communities still live in wild areas. However, the Guaraní language (Avañe′ẽ), is usually spoken by people in Paraguay and other neighboring countries and also utilized to name innumerous geographical features (e.g., rivers, wetlands, hills), animals, plants, towns, and cities. Type material Holotype ARGENTINA • &male; (Fig. 9); Corrientes Province, Capital Department, Corrientes City, Campus Universitario, Universidad Nacional del Nordeste; 27°28′04″ S, 58°46′53″ W; 60 m a.s.l.; 8 Feb. 2007; V.H. Zaracho leg.; UNNEC 9074. Paratypes ARGENTINA – Corrientes • 1 &male;; Capital Department, Corrientes City; 27°28′04″ S, 58°46′53″ W; 8 Nov. 2016; V.H. Zaracho leg.; UNNEC 8994 • 1 &male;; same collection data as for preceding; LGE 25740 • 2 &male;&male;; same collection data as for preceding; Feb. 2011; F. Abreliano leg.; UNNEC 11977, 11978 • 3 &female;&female;; Capital Department, Corrientes City; 27°29′26″ S, 58°50′13″ W; 24 Jun. 2005; V.H. Zaracho, J.A. Ruiz García and J.A. Céspedez leg.; UNNEC 8365 to 8367 • 1 &female;; Capital Department, San Cayetano; 27°33′04″ S, 58°40′37″ W; 18 Mar. 2011; J.L. Acosta and M. Ortiz leg.; LGE 25741 • 1 &female;; San Cosme Department, Paso de la Patria; 27°19′27″ S, 58°34′05″ W; 29 Jul. 2007; J.L. Acosta and S. Palomas leg.; UNNEC 9551 • 1 &male;; same collection data as for preceding; 2 Dec 2006; V.H. Zaracho and M.R. Ingaramo leg.; UNNEC 9003. – Chaco • 1 &male;; San Martin Department, Paraje Las Tablas; 26°11′40″ S, 59°38′45″ W; 13 Dec. 2005; V.H. Zaracho, R.H. Aguirre and J.A. Céspedez leg.; UNNEC 8531. – Formosa • 2 &male;&male;; Patiño Department, Comandante Fontana; 25°20′19″ S, 59°41′19″ W; 24 Nov. 2007; V.H. Zaracho leg.; UNNEC 9728, 9729 • 3 &male;&male;; Pilcomayo Department, Laguna Naick Neck; 25°10′58″ S, 58°07′29″ W; 29 Feb. 2008; V.H. Zaracho and J.L. Acosta leg.; UNNEC 9856 to 9858 • 1 &male;; Pilcomayo Department, Laguna Naick Neck; 25°10′58″ S; 58°07′29″ W; 15 Oct. 2009; V.H. Zaracho leg.; UNNEC 11964. PARAGUAY – Concepción • 4 &male;&male;; 85 km NE of Concepción, Arroyo Capitigo; 22°46′30″ S, 56°47′56″ W; 11 Nov. 1981; L. Fitzgerald, A.L. Aquino and N.J. Scott leg.; MNHNP 0413, 0415, 0421, 0436. – Presidente Hayes • 1 &female;; Ea. La Golondrina; 24°57′02″ S, 57°42′07″ W; 9 Sep. 1982; A.L. Aquino and D. Norman leg.; MNHNP 0783. – Central • 1 &male;; Villeta; 25°30′48″ S, 57°33′30″ W; 31 Aug. 1982; A.L. Aquino and D. Norman leg.; MNHNP 0417. – Amambay • 1 &male;; Parque Nacional Cerro Corá; 22°39′56″ S, 56°00′24″ W; 13 Oct. 2009; V.H. Zaracho and M. Motte leg.; MNHNP 11333. – Alto Paraguay • 3 &female;&female;; Ea. Doña Julia, 5 km N of Bahía Negra; 20°15′34″ S, 58°12′02″ W; 1 Oct. 1984; A.L. Aquino and D. Norman leg.; MNHNP 0784 to 0786. – Ñeembucú • 1 &male;; 19.8 km SSW of Pilar; 26°58′47″ S, 58°22′52″ W; 20 Feb. 1996; P. Freed leg.; MNHNP 10046 • 1 &male;; same collection data as for preceding; UNNEC 13938. Description Holotype Body small, robust; head nearly as broad as long (HW/HL = 1.1); snout sub-elliptical dorsally and acuminate laterally; canthus rostralis round; loreal region slightly concave; eye dorsolateral, its diameter about 32% of head length; pupil horizontal, elliptical; palpebral membrane translucent, bordered in its upper edge by a black streak; tympanum distinct, its diameter about 63% of the eye diameter. Tympanic membrane translucent, with some melanophores on the central region; supratympanic fold well developed, extending from the back of the eye to arm insertion; nostrils anterolateral, closer to the tip of the snout than to the eye, flanged in almost all their extension, except on the inner edge; internarial distance about 26% of head width; triangular postcommissural gland; lower lip with a medial projection that fits into a notch in the upper lip; tongue ovoid; vocal sac subgular with a fold parallel to jaw extending to the forearm; maxillary and premaxillary teeth present; vomerine teeth located posterior to and between choanae, arranged in straight transverse rows. Dorsum glandular, with more conspicuous glands placed on the posterior region. A pair (dorsal and lateral) of glandular rows formed by small segments starting behind the eyes and running towards the posterior part of the dorsum; ventral surface of the body smooth, with a distinct discoidal fold (pectoral few distinctive in the specimen in conservation); an axillary gland behind each arm insertion. Arms short and robust; fingertips rounded, not expanded (character state A); relative finger length IV <II ≤ I <III; nuptial asperities absent; inner metacarpal tubercle oval and ½ smaller than the outer, rounded; palmar tubercles present; prominent, rounded and entire subarticular tubercles on fingers, those on the base of each finger the most noticeable. Shank slightly longer than the thigh; thigh length about 43% SVL; relative toe lengths I <II <V <III