Edessa (Edessa) nigroacantha, Mendonça & Silva & Fernandes, 2023
publication ID |
https://doi.org/ 10.11646/zootaxa.5372.1.1 |
publication LSID |
lsid:zoobank.org:pub:1300D562-3E0B-4F72-933F-8FA7D28F6853 |
DOI |
https://doi.org/10.5281/zenodo.10167607 |
persistent identifier |
https://treatment.plazi.org/id/414B87B5-FF94-980D-FF63-DC0177B4F83A |
treatment provided by |
Plazi |
scientific name |
Edessa (Edessa) nigroacantha |
status |
sp. nov. |
Edessa (Edessa) nigroacantha sp. n.
( Figs. 34 View FIGURE 34 , 65 A–B View FIGURE 65 , 72 View FIGURE 72 )
Etymology. The name refers to the black humeral angles (L. nigro, black; L. canthus, corner).
Material examined. Holotype male. BOLIVIA, La Paz: Tumupasa, Mulford BioExpl , XII-1921 –1922, W. M. Manm ( USNM).
Measurements (n= 1). Total length: 19.8; head length: 1.8; head width: 3.7; pronotum length: 4.1; pronotum width: 13.6; scutellum length: 9.4; scutellum width: 7.0; abdominal width: 12.2; length antennomeres: I: 1.0; II: 1.9; III: 2.2; IV: 4.4.
Diagnosis. Large (19.8 mm). Dorsal body surface green, densely punctured ( Fig. 65 A View FIGURE 65 ). Ventral surface dark yellow with transversal black lines on thorax and abdomen ( Fig. 65 B View FIGURE 65 ). Antennae, with first segment yellow, second and thrid reddish brown and fourth yellow ( Fig. 65 A–B View FIGURE 65 ). Pronotum coarse, with concolorous with the surrounding surface punctures ( Fig. 65 A View FIGURE 65 ). Humeral angles short (1.25 times wider than long); apex with black spot restricted to the angles in dorsal view and restricted to the margin of the angles in ventral view; bent backward ( Fig. 65 A–B View FIGURE 65 ). Scutellum with concolorous with the surrounding surface punctures; apex not reaching the end of coria ( Fig. 65 A View FIGURE 65 ). Coria with all veins concolorous with the surrounding surface ( Fig. 65 A View FIGURE 65 ). Connexival segments with concavities almost entirely covered by subrectangular black spots separated by a large yellow median spot ( Fig. 65 A View FIGURE 65 ), spots extending ventrally, triangular ( Fig. 65 B View FIGURE 65 ). Posterolateral angles of connexivum with apices black ( Fig. 65 A View FIGURE 65 ). Ventral surface, thorax with brown lines; dark line of the propleura covering 2/3 of the width of the sclerite ( Fig. 65 B View FIGURE 65 ). Evaporatorium concolorous with the surrounding surface ( Fig. 65 B View FIGURE 65 ). Metasternal process ( Fig. 34 F View FIGURE 34 ) with arms of anterior bifurcation straight and laterally well expanded at apex; anterior bifurcation broadly excavated receiving fourth rostral segment. Legs with tibiae and tarsi reddish, remaining yellow ( Fig. 65 B View FIGURE 65 ). Abdomen with spine of segment III rounded ( Fig. 65 B View FIGURE 65 ). Intersegmental areas covered by very narrow black lines with well-defined margins, reaching the lateral spots ( Fig. 65 B View FIGURE 65 ). Pseudosutures concolorous with the surrounding surface ( Fig. 65 B View FIGURE 65 , dark lines are a deterioration of the exoskeleton). Median longitudinal brown band incomplete, restricted to the segment VII ( Fig. 65 B View FIGURE 65 ). Trichobothria both parallel to the spiracle. Male genitalia, posterolateral angles of pygophore very developed, well projected laterally, apices with spots black ( Fig. 34 A–B, D View FIGURE 34 ). Superior processes of the genital cup subtriangular, narrow, continuing ventrally in a smooth high carina, ending in a dentiform projection ( Fig. 34 B, E View FIGURE 34 , dentiform projection barely visible). Diaphragm with contrasting yellow spot ( Fig. 34 D–E View FIGURE 34 ). Parameres ( Fig. 34 D–E View FIGURE 34 ) with black margins; anterior lobe subrectangular; dorsal lobe rounded with very curved apex; posterior lobe subrectangular. Proctiger, posterior face triangular ( Fig. 34 D–E View FIGURE 34 ). Ventral surface sparsely punctuated ( Fig. 34 C View FIGURE 34 ). Ventral rim setose, with medial tuft ( Fig. 34 C View FIGURE 34 ); with expansions little developed, rounded, concolorous with the surrounding surface ( Fig. 34 A–C View FIGURE 34 ). Female genitalia. Unknown.
Comments. Edessa (E.) nigroacantha sp. n. resembles E. (E.) omopalla sp. n. due to humeral angles black, globose and curved; connexival segments black with subrectangular spots; abdomen ventrally with intersegmental areas brown reaching the lateral spots; and the shape of superior processes of the genital cup. On the other hand, both species can be easily separated by the pygophore, the superior processes of the genital cup with smooth carina ending in a dentiform projection ( E. (E.) omopalla sp. n. with crenulate carina without dentiform projection); diaphragm with contrasting yellow spot ( E. (E.) omopalla sp. n. without spot) and ventral rim with lateral subdistal tuft of setae ( E. (E.) omopalla sp. n. without tuft of setae).
Distribution ( Fig. 72 View FIGURE 72 ). BOLIVIA: La Paz.
USNM |
Smithsonian Institution, National Museum of Natural History |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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