Paracloeodes morellii Emmerich & Nieto, 2009, sp. nov.
Creators: name: Emmerich, Daniel
name: Nieto, Carolina
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Ephemeroptera
Baetidae
Paracloeodes
Paracloeodes morellii

description: Paracloeodes morellii sp. nov.   
(Figs. 13–25)  
 Nymph. Length: body: 2.8–3.3 mm; cerci 1.0– 1.3 mm. Antennae 0.7–0.8 mm, 1.5 times the head capsule. General color brownish orange. Head orange brown, with small brownish spots as in Figs. 13–14. Frontal keel present, ocelli brownish. Antennae: scape and pedicel pale yellow, flagellum pale. Mouthparts (Figs. 15–20): labrum (Figs. 15 a–b) dorsally with 2–3 subapical setae near midline, anterior margin with bifid setae. Mandibles (Figs. 16–17) without setae between prostheca and mola, incisors cleft in two sets, inner set at right angle with outer set. Left mandible (Fig. 16) with molars with constrictions, prostheca broad with 1–2 denticles. Right mandible (Fig. 17) with prostheca bifid. Hypopharynx (Fig. 18) with lingua subequal to superlinguae and rounded apically. Maxillae (Fig. 19) with palpi two segmented, 1.5 times the length of galealacinia. Labium (Fig. 20) with segment II of palpi with rounded projection, 2 times width of segment III, segment III conical.   
Thorax (Fig. 13) orange brown. Pronotum with a pair of brownish spots in the midline. Mesonotum shadowed with brown and with small brownish spots. Metanotum brownish. Pleura reddish brown, sterna whitish. Legs (Fig. 21) pale yellow. Tarsal claws 0.4 times the length of tarsi, with 2 rows of minute denticles (Fig. 22). Hind wing pads absent. Female (Fig. 14) paler than male and with a brown band in metanotum and anterior portion of fore wing pads.  
Abdomen orange brown. Color pattern: segment II–VII with medial elongate spot as in Fig. 13, segment IX brownish. Posterior margin of terga with spines as long as wide (Fig. 23). Sterna pale yellow, sternum IX brownish except at lateral sides. Gills whitish, translucent, oblong, 1.5 times the length of each tergum. Paraprocts (Fig. 24) with 8–10 spines apically. Terminal filaments pale yellow, with crown of small spines on each segment (Fig. 25).  
 Adults. Unknown.   
 Etymology. This species is dedicated to Dr. Enrique Morelli, entomologist of Universidad de la República (Uruguay) who continually stimulates the study of the aquatic insects of Uruguay.   
 Discussion. This species can be distinguished from the other species of the genus by the following combination of characters: 1) frontal keel present; 2) antennae short, 1.5 times the head capsule; 3) segment II of labial palpi with rounded projection, 2 times width of segment III (Fig. 20); 4) tarsal claws with two rows of minute denticles (Fig. 22); 5) hind wing pads absent; 6) general color pattern with head and thorax with small spots, abdomen with segment II–VII with medial elongate spot as in Fig. 13; 7) posterior margin of terga with spines as long as wide (Fig. 23); 8) paraprocts with 8–10 spines apically (Fig. 24); 9) terminal filament with crown of small spines on each segment (Fig. 25).   
 Material. Holotype, male nymph: URUGUAY, Deptos. Rivera-Tacuarembó, R 44, km 26.5, A° Carpintería, S 31°48´28´´, W 55°13´09´´, 121 m, 20/02/2008, Emmerich & Molineri col. Paratypes: 5 nymphs same data (mouthparts, legs and paraprocts of 1 nymph mounted on slide); 1 nymph (parts on slide Depto. Durazno, Sarandí del Yi, Río Yi, S 33°20´41´´, W 55°37´07´´, 132 m, 21/02/2008, same collectors; 2 nymphs (1 on slide): Depto. Cerro Largo, ruta 8, km 335, A° Otazo, S 32°50´00´´, W 54°14´55´´, 123 m, 20/02/2008, Same collectors. The holotype and 1 paratype female are deposited in the Museo de la Universidad de la República, Montevideo, Uruguay (MUR); remaining paratypes are housed in Instituto Miguel Lillo, Tucumán, Argentina (IML).
description: Published as part of Emmerich, Daniel & Nieto, Carolina, 2009, First record of the genus Paracloeodes Day (Ephemeroptera: Baetidae) in Uruguay and description of two new species, pp. 57-62 in Zootaxa 2225 (1) on pages 60-62, DOI: 10.11646/zootaxa.2225.1.3, http://zenodo.org/record/5320276