Miroculis (Miroculis) cohnhafti, Boldrini, 2017

Boldrini, R., 2017, Three new species of Miroculis from the Serra da Mocidade National Park, Roraima State, Brazil, with new records and checklist of the Leptophlebiidae (Ephemeroptera), Zootaxa 4317 (3), pp. 573-583 : 579-581

Miroculis (Miroculis) cohnhafti sp. nov. Raimundi & Nascimento

( Figs. 16–21 )

Diagnosis. Miroculis (Miroculis) cohnhafti sp. nov. differs from the other species of Miroculis by the following characteristics in the male imago: 1) compound eye with upper portion on a stalk of intermediate length (approximately as long as wide); 2) distomedial projection of compound eyes present (little developed in some specimens) ( Fig. 16 ); 3) forewing with apical membrane between C and R pale ( Fig. 18 ); 4) veins A1 and A2 free ( Fig. 18 ); 5) forceps segment II with inner margin of apical portion broadened ( Fig. 20 ).

Description. Measurements (mm). Male imago. Body: 5.8; forewing: 4.6; angularity of cubital region 100°; hind wing: 1.2; fore leg: 4.0. Caudal filament: broken off and missing.

Ratios. Wings: Forewing width 0.4 x forewing length; hind wing length 0.3 forewing wing length; hind wing width 0.46 hind wing length; fork on MA of forewing 0.5 x total length of MA. Legs: fore leg segments: 1.1: 1.00: (1.70 mm) 0.08: 0.62: 0.47: 0.26: 0.14. Genitalia: medial length of styliger plate 0.4 x maximum width of styliger plate; lateral length of styliger plate 1.0 x medial length of styliger plate; lateral length of styliger plate 0.4 x lateral length of segment IX. Forceps segment III 0.8 x segment II; segment III 0.3 x segment I; segment II 0.4 x segment I; penis length 0.9 x forceps segment I.

Coloration ( Figs. 17–20 ). Body: brownish. Head. Orangish brown, with dark brown marks ventrally. Compound eye with stalk orange, lighter toward apex; facets of upper portion orange, separated by dark brown grooves. Antenna: scape yellowish, pedicel brown and flagellum whitish translucent. Thorax: brown, sutures darker; membranous areas yellowish. Wings ( Figs. 18–19 ): forewings with hyaline membrane; longitudinal veins brown, with C, SC and R darker; cross-veins brown, weakly developed. Hind wing with membrane hyaline; veins brown. Legs: Fore leg brownish; femur with medial blackish mark and subapical blackish band; tibia with a subapical blackish band. Mid and hind legs: coxae brown, remainder whitish brown; femora with a medial gray mark and subapical blackish band; tibiae with a subapical blackish mark. Abdomen: segments I – VI translucent brown, remainder orangish brown; terga with dark brown marks on medial and sublateral regions. Genitalia ( Figs. 20–21 ). Styliger plate brown, washed with orange–yellow. Forceps brown slightly washed with orange, except basal 2/3 of segment I and apical region of segment III light brown. Penis brown washed with yellow. Caudal filament: whitish brown, darker basally on each segment.

Morphology: Head: posterior margin V-shaped. Compound eye with upper portion on a stalk of intermediary length (approximately as long as wide); distomedial projection of compound eyes present; dorsal surface rounded, with 11 facets on the longest row. Lower portion of compound eye elliptic. Wings: forewing with three cross veins between C and Sc basal to bulla; 11 cross veins between C and Sc; IMP connected to MP1 and MP2 by a cross vein; MP2 connected to MP1 and CuA by cross veins; CuA connected to CuP by cross vein subbasally; veins A1 and A2 free. Hind wing with apex rounded, fork of R+MA symmetric, CuP present. Legs: fore tarsal claw different, one spine-like and other rounded. Genitalia: Styliger plate with posteromedial margin concave. Forceps segment I narrowing gradually toward apex without broad basal portion; inner and outer margins undulated; forceps segment II with inner margin broadened apically. Penis broad basally, narrowing toward apex; apex bifurcated ( Fig. 21 ): inner bifurcation short and acute; outer bifurcation longer and rounded; without row of spines on inner margin.

Etymology. This species is named in honor of Mario Cohn Haft, one of the organizers of the expedition to the Serra da Mocidade.

Distribution: Brazil: Roraima State.

Material examined: Holotype: male imago, BRAZIL, Roraima State, Caracaraí municipality, Serra da Mocidade National Park , 01°42’21.3”N / 061°47’04.7”W, 03–04.ii. 2016, Nascimento, J.M.C. col. ( INPA) . Paratypes: ten male imagos (same data as holotype) (five at INPA; five at CZNC) . Five male imago, BRAZIL, Roraima State, Caracaraí Caracaraí municipality, Serra da Mocidade National Park , 01°36.240"N / 061°54.370'W, 15–25.i. 2016, Boldrini, R., Barroso, P.C.S. and Xavier, F.F. col. ( UFRR) .

Comments: Miroculis (Miroculis) cohnhafti sp. nov. shares some characteristics with Miroculis (M.) stenopterus Lima, Raimundi, Pinheiro & Salles, 2014 , Miroculis (M.) marauiae Savage & Peters, 1983 and Miroculis (M.) eldorado Gama-Neto & Hamada, 2014 . These four species have the upper portion of the compound eyes on a stalk, forewings are hyaline without any pigmentation, distomedial portion of styliger plate is concave, or concave to slightly straight in M. (M.) marauiae , and hind wings are hyaline, but washed with brown on the base in M. (M.) stenopterus , absent in M. (M.) marauiae and in subcostal area in M. (M.) eldorado . Otherwise, Miroculis (M.) cohnhafti sp. nov. differs from these mentioned species above by distomedial projection of compound eyes present, while it is absent in the others species.

Figures

FIGURES 16 – 21. Male imago of Miroculis (Miroculis) cohnhafti sp. nov.: 16) poSterior view of head detailing the preSence of a projection laterally on upper portion of compound eyeS; 17) habituS, lateral view; 18) forewing; 19) hind wing; 20) genitalia; 21) apex of peniS, detail.