Paracloeodes poranga (Salles & Lugo-Ortiz)

Cruz, Paulo Vilela, Salles, Frederico Falcão & Hamada, Neusa, 2018, Contribution to the taxonomy of Paracloeode s Day 1955 (Ephemeroptera: Baetidae) from South America, Zootaxa 4403 (1), pp. 1-49 : 36-39

Paracloeodes poranga (Salles & Lugo-Ortiz)

( Figures 23–24 )

Iguaira poranga Salles & Lugo-Ortiz 2003: 203 . Paracloeodes poranga Nieto & Salles 2006: 13 .

Diagnosis. Mature nymph. 1) frons with two fused keels ( Fig. 23E ); 2) distolateral margin of labrum with bifid and pectinate setae (Fig. 74B in Nieto & Salles 2006); 3) right mandible incisors cleft (Fig. 76 in Nieto & Salles 2006); 4) distomedial protuberance of labial palp 2.2–2.5× width of base of segment III (Fig. 79 in Nieto & Salles 2006); 5) glossa almost truncate at apex (Fig. 79 in Nieto & Salles 2006); 6) hind wing pads present; 7) anterior surface of forefemur with one row blunt setae near dorsal margin, and two rows of pectinate and stout setae near ventral margin ( Fig. 24B ); 8) anterior surface of foretibia with irregular rows of pectinate and stout setae ( Fig. 24B ); 9) anterior surface of foretarsus without setae ( Fig. 24B ); 10) ventral margin of tarsus with two rows of stout setae, one simple and other pectinate ( Fig. 24B ); 11) cercus with short spines on each segment ( Fig. 24D ); 12) paracercus with short spines on each segment ( Fig. 24C ); 13) body color pattern as in figures 23A–23D.

Complementary description. Mature nymph. Head. Frons with two fused keels ( Fig. 23E ). Antenna with scape and pedicel subcylindrical; flagellum with blunt spines and thin setae ( Fig. 24A ). Labrum dorsally with thin setae scattered over surface; subapical setae indistinguishable from others; near distolateral margin with one pair of long and thin setae indistinguishable from others; ventrally with submarginal row of setae composed of long and stout setae on lateral margin; distolateral margin with bifid and pectinate setae, distal margin with bifid setae; ventral surface with one row of stout setae near lateral and distolateral margin. Maxilla with maxillary palp long, 2.0–2.7× length of galea-lacinia; palp segment II 1.3× length of segment I. Labium with glossa apex almost truncate, 0.9× length of paraglossa; inner margin bare ventrally; inner margin, dorsally, with nine stout setae increasing in length apically; apex with one row of short and stout setae dorsally outer margin bare ventrally; outer margin, dorsally, with eleven long and stout setae; ventral surface scattered with long, and thin setae; dorsal surface with one tuft of stout setae on apical third. Paraglossa apex rounded; dorsally with three long and stout setae; outer margin with one row of long stout setae ventrally, inner margin with row of ten long and stout setae dorsally; dorsal surface with three longitudinal rows of setae, two near outer and other near inner margins; ventral surface with one row of five stout setae increasing in length near inner margin. Labial palp with segment I 0.8× length of segments II and III combined; segment I with thin setae. Segment II with distomedial protuberance 2.2–2.5× width of base of segment III; inner margin with few short and stout setae and long and thin setae; outer margin covered with short and thin setae; dorsally covered with thin setae. Segment III inner margin with one row of stout setae ventrally and dorsally; length 1.0× width; covered with short and thin setae. Thorax. Foreleg ( Fig. 24B ) ratio 1.4:(0.90mm):0.9:0.4. Forefemur with length about 4.8× maximum width; dorsal margin with row of blunt and sometimes apically frayed setae (in lateral view they look like stout setae); ventral margin with row of robust, pectinate and stout setae; length of setae on dorsal margin about 0.1× maximum width of femur; dorsal margin with one row of robust, blunt and sometimes apically frayed setae; near dorsal margin one row of blunt setae; near ventral margin two rows of pectinate and stout setae; posterior surface with two rows of pectinate and stout setae near ventral margin. Dorsal margin of tibia with short and simple setae; ventral margin with one row of stout setae; anterior surface with irregular rows of pectinate and stout setae. Dorsal margin of tarsus with short and thin setae; ventral margin with two rows of stout setae, one simple and other pectinate. Mid and hind legs similar to foreleg. Abdomen with hyaline gills; margin with narrow spines intercalating short and thin setae. Tracheae pigmented. Gill I as long as length of segment II and half of III combined; lanceolate. Gill IV as long as length of segment V and half of VI combined; lanceolate. Gill VII as long as length of segments VIII and IX; lanceolate. Paraproct with 19–31 marginal spines; surface with micropores and short and thin setae; postero-lateral extension with marginal spines. Paracercus with short spines on each segment ( Fig. 24C ). Cercus with short spines on each segment, and long spines laterally ( Fig. 24D ).

Comments. A male subimago nearly ready to emerge from the nymphal exuviae possesses a subgenital plate with a medial spine.

Material examined. Three nymphs, BRAZIL, Rio de Janeiro state, Nova Friburgo , rio Cascatinha , 1200 m alt., 22.x.2011, 22°20’38.2’’ S / 042°33’26.2’’ W, P.V. Cruz, M. De-Souza cols., INPA . Fifteen nymphs, BRAZIL, Minas Gerais state, Itamonte, Parque Nacional de Itatiaia , abrigo Alsene , 1 tributary of rio Airuoca , bridge, 2215 m alt., 25.x.2011, 22°21’40.7’’ S / 044°42’25.1’’ W, P.V. Cruz, M. De-Souza cols., INPA . Three nymphs, BRAZIL, Minas Gerais state, Itamonte, stream on the trail to Alsene , Km 10, 07.ix.2000, N. Ferreira Jr. col., CZNC .

Figures

FIGURE 24. Paracloeodes poranga.Nymph.A. antenna; B. foreleg; C. cercus; D. paracercus.

FIGURE23. Paracloeodes poranga.Nymph.A.dorsal view of mature male; B. dorsalview of immature male; C.dorsal view of mature female; D. dorsal view of immature female; E. dorsal view of frons.