Chromatonotus bahiaensis, Lopes & Oliveira, 2019

Lopes, Sonia Maria & Oliveira, Edivar Heeren De, 2019, Three new species of Chromatonotus Hebard, 1920 and new combination for Chromatonotus elegantula R. S. Albuquerque, 1974 (Blattaria: Ectobiidae), Zootaxa 4712 (3), pp. 423-433: 424-425

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Chromatonotus bahiaensis

sp. nov.

Chromatonotus bahiaensis   sp. nov.

( Figs. 1–7 View FIGURES 1–7 , 27 View FIGURES 27–28 , 31 View FIGURES 31–34 )

Measurements (mm). Holotype and one paratype male, total length 9.5–11.0; length of pronotum 2.0–2.4; width of pronotum 2.5; length of tegmen 8.0–9.2; width of tegmen 2.0–2.4; one of paratype female, total length 10.0; length of pronotum 2.0; length of tegmen 8.9; width of pronotum 2.7; width of tegmen 2.4.

General coloration glossy brown ( Fig. 31 View FIGURES 31–34 ). Head dark brown, eyes black ( Fig. 1 View FIGURES 1–7 ); antennae golden tomentose, maxillary palps light brown. Pronotum with central disk brown to yellowish brown ( Fig. 2 View FIGURES 1–7 ). Tegmina brown with initial veins of discoidal and anal fields dark brown. Legs light brown.

Head subtriangular; vertex exposed under the pronotum; eyes narrow; interocular space wide, larger than the area between the antennal bases. Antennae long and tomentose, length exceeding the apex of the abdomen; maxil- lary palpi with third and fifth articles larger than the fourth; fifth article dilated and tomentose.

Thorax with pronotum trapezoidal, convex, with lateral flaps deflected. Anterior femur type B3, the anteroventral face with 3–5 large spines in the middle region, succeeded by another row with ten or more tiny spines towards the apex and ending in three large apical spines; posteroventral face with four large spines, basal most spine medial, fourth spine apical; middle and posterior femura with 4–6 large, well-spaced spines, most distal spine at apex; ge- nicular spine present; spines similar on both ventral faces; pulvilli present on all tarsal segments; claws symmetrical, simple. Arolia small in relation to the size of the claws. Tegmina narrow, marginal field short, deflected and slightly concave; scapular field long, narrow and with oblique venation; discoidal field wide, with veins in longitudinal ar- rangement; anal field long, with 5–7 veins. Wings with costal field showing branches of the radial vein, with dilated apices. Apical triangle undeveloped; anal field fan-folded.

Abdomen with first-segment tergal modification consisting of two groups of symmetrical cilia in the median region ( Fig. 27 View FIGURES 27–28 ). Supraanal plate projecting between cerci, with spiniform modification at the apex; paraprocts dif- ferentiated and highly specialized; ( Fig. 3 View FIGURES 1–7 ). Subgenital plate asymmetrical with cilia on the apical border; styles differentiated, right style rounded and small, and the left style with spiniform margin ( Fig. 4 View FIGURES 1–7 ). Median sclerite with slightly tapered apex ( Fig. 5 View FIGURES 1–7 ). Left phallomere hook-shaped with rounded apex ( Fig. 6 View FIGURES 1–7 ). Right phallomere Y-shaped, arms asymmetrical ( Fig. 7 View FIGURES 1–7 ).

Type material. Holotype male ( MNRJ), Brazil, Bahia, Itapetinga, XI/1969, F. M. Oliveira, coll.; paratype female ( MNRJ), same date as holotype; paratypes, 2 males and 2 females ( MNRJ), Mato Grosso, Sinop , 12º31’S, 55º37’W, Hwy. BR-163, between 500 and 600-km markers, elevation 350 m, IX/1974, Alvarenga & Roppa, colls. GoogleMaps  

Etymology. The specific name refers to Bahia state, where the holotype was collected.

Discussion. Chromatonotus bahiaensis   sp. nov. Differs from described species of the genus by the more intense coloration of the head and the configuration of the supra-anal plate, projecting between the cerci and modified at the apex in the form of spines.


Museu Nacional/Universidade Federal de Rio de Janeiro