Enitharoides tricomerus Barbosa, Ribeiro & Nessimian,

Nessimian, Jorge Luiz, 2017, Resurrecting the genus Enitharoides Brooks, 1953 (Heteroptera: Nepomorpha: Notonectidae): description of three new species and redescription of Enitharoides brasiliensis (Spinola, 1837), comb., Zootaxa 4323 (4), pp. 469-486: 480

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Enitharoides tricomerus Barbosa, Ribeiro & Nessimian

sp. nov.

Enitharoides tricomerus Barbosa, Ribeiro & Nessimian  , sp. nov.

( Figs. 49–61View FIGURES 49 – 61, 65View FIGURE 65)

Type material. BRAZIL. Minas Gerais State—Itabirito, Vale dos Tropeiros, Cachoeira do Cascalho , 996 m a.s.l., [20°12’26.3”S / 43°38’34.1”W], barranco com raízes, 11.X.2010, (N. Ferreira Jr.): 1 m ( DZRJ 3523), holotype. Serra CaraçaGoogleMaps  1880m / MG – Brasil – XI -961/ Kloss, Lenko, Martins & Silva col.: 1 m ( MZUSP), paratype. Espírito Santo State—Domingos Martins, 4-5.VI.1993, (M.R. Gomes, A.M.P.T.C. Silva): 1 m and 1 f, macropterous ( DZRJ 3522), paratypes. 

Description. MALE HOLOTYPE. Body length (from apex of head to apex of hemelytra): 16.8; greatest vertex width: 1.7; synthlipsis: 1.2; eye width: 2.1; head length: 1.5; greatest head width: 5.8; pronotum length: 1.9; greatest pronotum width: 6.2; scutellum length: 4.6; scutellum width: 5.0.

Color. Body with general color yellow ( Fig. 49View FIGURES 49 – 61). Setae yellow to grey. Two light-brown right triangle-shaped marks on vertex, in dorsal view. Third rostral segment with a brown line along length; fourth segment entirely brown. Foveate area of pronotum dark-brown; pronotum yellow, hyaline. Scutellum with a brown strip on area covered by pronotum and laterally on punctate area ( Fig. 49View FIGURES 49 – 61). Hemelytra hyaline, pale yellow, with membranal suture dark-brown. Hind wings with brown veins, mixed with hyaline and brown areas ( Fig. 52View FIGURES 49 – 61). Legs yellowish with brown spots distributed throughout lateral margin of all trochanters, and along mesal margin of fore- and middle femur ( Fig. 50View FIGURES 49 – 61). Ventrally abdomen yellow, connexivum tinged with brown.

External morphology. Head with greatest width 3.8 times its median length, and 3.5 times vertex width; vertex width 1.4 times synthlipsis; eye width 1.8 times synthlipsis. Pronotum with median length 1.2 times median length of head; greatest width 3.6 times its median length; posterior margin slightly concave medially. Scutellum slightly wider than long; median length 2.4 times pronotum median length; surface with regular, deep punctations in distributed throughout the entire surface except on basolateral angles, delimited by a brown mark at each side ( Fig. 49View FIGURES 49 – 61). Entire ventral surface of middle femur and half of lateral surface of mesotrochanter with conspicuous and dense patch of long setae ( Figs. 53, 55View FIGURES 49 – 61); anteapical pointed protuberance robust and curved at apical margin with a blunt seta at apex ( Fig. 55View FIGURES 49 – 61); lateral margin with seven peg-like setae ( Fig. 55View FIGURES 49 – 61). Hemelytra with nodal furrow curved anterad, almost straight, shorter than distance between its tip and membranal suture. Metaxyphus triangular, with margins almost straight, with two strips of setae ( Fig. 56View FIGURES 49 – 61).

Genitalia. Posterior part of male genital capsule ending in acute angle without process. Right paramere anteriorly truncate, curved ventrally, forming a right angle with ventral margin; dorsal margin straight; posteriorly rounded; patch of setae centered on median region ( Fig. 57View FIGURES 49 – 61). Left paramere angled anteriorly, dorsally straight, covered with long fine setae along dorsal margin ( Fig. 58View FIGURES 49 – 61).

PARATYPES: MALE (n=2) / FEMALE (n=1). Body length (from apex of head to apex of hemelytra): 15.1– 6.1/ 14.4; greatest vertex width: 1.5–1.7/ 1.6; synthlipsis: 1.0–1.2/ 1.1; eye width: 2.0–2.2/ 1.9; head length: 1.5– 1.6/ 1.4; greatest head width: 5.0–5.5/ 5.0; pronotum length: 1.9–2.0/ 1.5; greatest pronotum width: 5.7–6.0/ 5.5; scutellum length: 4.1–4.9/ 3.8; scutellum width: 4.8–5.2/ 4.6.

Color. Male paratypes yellow to brown. Macula on scutellum over punctations, or laterally positioned. Female, in dorsal view, brown, except head and pronotum ( Fig. 59View FIGURES 49 – 61). Labrum, triangle at base of second rostral segment, line along third rostral segment and fourth segment, dark brown. Scutellum brown with yellow macula laterally. Ventrally mostly brown ( Fig. 60View FIGURES 49 – 61).

External morphology. Head with greatest width 3.1 to 3.7 its median length in males, 3.7 in female; vertex width 1.4 to 1.5 times synthlipsis in males, 1.5 in female. Pronotum with median length 1.2 to 1.3 times median length of head in males, 1.1 in female; greatest width of pronotum 3 times its median length in males, and 3.7 in females. Female scutellum with a few punctures apically. Middle femur setose, with setae shorter than in males. Female abdominal sternum VII rounded ( Fig. 61View FIGURES 49 – 61).

Etymology. The specific epithet, tricomerus  , refers to the middle femora conspicuously setose, from Greek, trico = hair and merus = thigh.

Taxonomic notes. Enitharoides tricomerus  is similar to E. lucasduquei  due to the large number of setae on the middle femur ( Figs. 28View FIGURES 24 – 36, 53View FIGURES 49 – 61). Although the setae on E. tricomerus  femur are longer and more abundant ( Fig. 53View FIGURES 49 – 61), which facilitates the diagnosis, both species can also be distinguished by the anteapical pointed protuberance of the middle femur with curved margins ( Fig. 54View FIGURES 49 – 61); the margins of the metaxyphus almost straight ( Fig. 56View FIGURES 49 – 61); the right paramere dorsal margin is straight and anteriorly truncate, curved ventrally, forming a right angle with the ventral margin ( Fig. 57View FIGURES 49 – 61). E. lucasduquei  has abundant but shorter setae on the middle femur; the anteapical pointed protuberance of the middle femur has straight margins ( Fig. 29View FIGURES 24 – 36); the margins of the metaxyphus are convex, tapering in the apical third to a rounded apex ( Fig. 31View FIGURES 24 – 36); the right paramere dorsal margin is sinuous and anteriorly emarginated dorsal and ventrally, making it somewhat projected ( Fig. 32View FIGURES 24 – 36).


Museu de Zoologia da Universidade de Sao Paulo