New species and stages description of Ulmeritoides Traver, 1959 (Ephemeroptera: Leptophlebiidae) from Roraima State, Northern Brazil
Boldrini, R.
Lima, L. R. C.
Zootaxa
2017
4282
2
385
394
Boldrini & Lima, 2017
Boldrini & Lima
2017
[151,407,295,321]
Insecta
Leptophlebiidae
Ulmeritoides
Animalia
Ephemeroptera
1
386
Arthropoda
species
amajari
sp. nov.
Diagnoses. Ulmeritoides amajari sp. nov.can be separated from the other species of the genus by the following combination of characters. In the imago: 1) forewings hyaline, base brown and without dark spots in bullae in Sc and R1 ( Fig. 4); 2) one cross-veins basal to bulla in forewings ( Fig. 4); 3) abdominal color pattern as in Fig. 1; 4) penis lobe ending in an rounded apical projection ( Fig. 7). In the female: forewings hyaline, base brown and without dark spots in bullae in Sc and R1; 2) one cross-veins basal to bulla in forewings; 3) abdominal color pattern as in Fig. 2. In the nymph: 1) medial denticle on anteromedian emargination of labrum much larger than others ( Figs. 8, 8a); 2) tusk on inner margin of maxillae well developed ( Figs. 10, 10a); 3) dorsum of fore femur with numerous, acute spines ( Fig. 11); 4) lines of pectinate setae on ventral surface of tibia III forming one main line ( Fig. 13). Male Imago.Length: body: 5.5–6.2 mm; forewings: 5.7–6.5 mm; hind wings: 1.0– 1.1 mm. General coloration brown ( Fig. 1). Head: flagellum light brown; ocelli white, reddish brown basally; upper portion of eyes reddish, lower portion blackish. Thorax: pro-, meso- and metanotum brown; pro-, meso-, and metasternum reddish brown. Wings ( Figs. 4, 5, 5a): membrane of forewings ( Fig. 4) hyaline, wing base light brown; main longitudinal and intercalaries veins light brown, cross-veins hyaline; one cross-vein basal to bulla. Membrane of hind wings ( Figs. 5, 5a) hyaline; longitudinal and cross-veins hyaline. Legs ( Fig. 1): Yellowish; middle region of all femora with short blackish mark. Leg I: femur washed with reddish brown; tibia washed with light brown, subapical portion of tibia with a black band; tarsi II and III washed with light brown. Tibia II and III with a reddish brown band apically. Abdomen ( Fig. 1): Terga reddish brown. Terga I, II and III darker. Terga I–VIII with lateral light reddish brown spots. Sterna light reddish brown. Genitalia ( Fig. 6): penis yellowish, washed with reddish brown basally, apex yellowish. Forceps yellowish, segment I and II washed with light brown. Apex of penis lobe ending in a inner rounded apical projection ( Fig. 7), and with a lateral pointed projection (7a). [Caudal filaments broken off and lost]. Female imago.Length: body: 5.7–6.3 mm; forewings: 5.1–7.1 mm; hind wings: 1.1 mm. General color light brown ( Fig. 2). Head: pedicel brown; ocelli white, blackish basally; area between lateral ocelli and eyes brown. Thorax: Lateral margins of pronotum and pleura blackish. Wings. Wings membrane hyaline. Similar to male imago. Legs ( Fig. 2): light brown; middle region of all femora with short blackish marks; Leg I: femur washed with brown; tibia washed with light brown, subapical portion of tibia with a black band. Subbasal region of hind femur with a longitudinal blackish stripe. Tarsi II and III washed with black. Abdomen ( Fig. 2): Terga I, II and III darker; terga I–VIII with lateral light brown spots, and terga IV–VIII with a medial light brown spots. Sterna I–III darker. [Caudal filaments broken off and lost]. Nymph.Length: body: 6.3–7.1 mm. Nymphal exuviae: Tibia I: 1.2 mm; Tibia II: 1.1 mm; Tibia III: 1.3 mm. General coloration: light brown to brown. Labrum ( Figs. 8, 8a): Subrectangular, broader than long; with one middle larger and apically rounded denticle and four inconspicuous denticles. Mandibles: Apical 1/2 of right mandible with inner and outer margin with fine long setae; inner and outer incisors with two and three denticles respectively. Apical 1/2 of left mandible ( Fig. 9) with outer margin with fine long setae; inner and outer incisors with three denticles. Maxilla ( Figs. 10, 10a): Small tusk on inner apical margin present; one robust and twelve subapical pectinate setae. FIGURES 1–3. Ulmeritoides amajari sp. nov.1, male imago (lateral view); 2, female imago (dorsolateral view); 3, nymph (dorsal view). Labium: Segment I with fine, simple setae scattered on inner margin; outer margin with a row of setae increasing in length toward apex, long pectinate setae near apex. Segment II with fine, simple setae scattered on inner and outer margin; dorsally with a diagonal row of seven simple setae. Segment III with fine, simple setae scattered on inner and outer margin. Thorax ( Fig. 3): nota light brown. Leg I ( Fig. 11): Brown; subapical region of tibia dark brown. Femur outer margin with long, pectinate setae; dorsal surface with long, pectinate setae near outer margin, inner margin with spine-like pectinate setae and with spine-like setae on midline. Tibia inner margin with a row of long, pectinate setae; dorsal and ventral surface with fine, long, simple setae near outer margin, and with spine-like setae near inner margin. Tarsi inner margin with a row of spine-like setae, and outer margin with fine, long simple setae. Claws with six denticles increasing in length toward apex. Leg II ( Fig. 12): Femur similar to leg I. Leg III ( Fig. 13): Subapical region of tibia and tarsi dark brown. Femur outer margin with simple setae; inner margin with a row of spine-like setae. Tibia ventral surface with a row of long, pectinate setae; dorsal surface with a row of spine-like setae near inner margin; apex with five long, pectinate setae. Abdomen ( Fig 3): terga brown. Posterolateral projections lighter, present on abdominal segments II-IX. Sterna light brown. Gills gray. [Caudal filaments broken off and lost].
Distribution. Brazil: Roraima: Amajarimunicipality.
Materialexamined. Holotype. Maleimago (reared), Brazil, Roraima, Amajari, Rio Amajari, below the bridge, 3°39’51.6’’N/ 61°21’32.46’’W, 30.iii.2016, Boldrini, R.coll ( INPA). Paratypes: Threefemale imago, Brazil, Roraima, Amajari, Rio Amajari, below the bridge, 3°39’51.6’’N/ 61°21’32.46’’W, 16.ii.2016, Boldrini, R., Lima, L.R.C.coll ( UFRR). Twofemale and one male imagos (all reared), Brazil, Roraima, Amajari, Rio Amajari, below the bridge, 3°39’51.6’’N/ 61°21’32.46’’W, 16.ii.2016, Boldrini, R., Lima, L.R.C.colls ( CZNC). Twofemale and three male imagos, Brazil, Roraima, Amajari, Rio Amajari, below the bridge, 3°39’51.6’’N/ 61°21’32.46’’W, 30.iii.2016, Boldrini, R.coll ( UFRR). Threeimature nymphs, Brazil, Roraima, Amajari, Rio Amajari, below the bridge, 3°39’51.6’’N/ 61°21’32.46’’W, 30.iii.2016, Boldrini, R.coll ( UFRR).
Etymology. Amajari, name of the river where the material was collected.
Comments.The male imago of Ulmeritoides amajari sp. nov.have a forewing coloration and penis shape similar to that of the widespread species U. uruguayensis. Ulmeritoides amajari sp. nov.is distinguished from U. uruguayensisby apex of penis lobe; U. amajari sp. nov.has the apex of penis lobe ending in a inner rounded apical projection, while U. uruguayensishas the apex of penis lobe ending in a inner pointed apical projection. The nymphs of both species can be distinguished by lines of pectinate setae on ventral surface of tibia III ( U. amajarihas one main line, while U. uruguayensis, has two lines).
1950907471
2016-03-30
INPA
Boldrini, R.
Brazil
Material
3.6643333
Rio
1
-61.359016
Male
5
390
1
Roraima
holotype
1950907371
2016-02-16
UFRR
Boldrini, R. & Lima, L. R. C.
Brazil
3.6643333
Rio
1
-61.359016
Three
5
390
1
Roraima
paratype
1950907469
2016-02-16
CZNC
Boldrini, R. & Lima, L. R. C.
Brazil
3.6643333
Rio
1
-61.359016
Two
5
390
1
Roraima
paratype
1950907472
2016-03-30
UFRR
Boldrini, R.
Brazil
3.6643333
Rio
1
-61.359016
Two
5
390
1
Roraima
paratype
1950907470
2016-03-30
UFRR
Boldrini, R.
Brazil
3.6643333
Rio
1
-61.359016
Three
5
390
1
Roraima
paratype