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

Chromatonotus bahiaensis sp. nov.

( Figs. 1–7 , 27 , 31 )

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 ). Head dark brown, eyes black ( Fig. 1 ); antennae golden tomentose, maxillary palps light brown. Pronotum with central disk brown to yellowish brown ( Fig. 2 ). 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 ). Supraanal plate projecting between cerci, with spiniform modification at the apex; paraprocts dif- ferentiated and highly specialized; ( Fig. 3 ). 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 ). Median sclerite with slightly tapered apex ( Fig. 5 ). Left phallomere hook-shaped with rounded apex ( Fig. 6 ). Right phallomere Y-shaped, arms asymmetrical ( Fig. 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.

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.

Figures

FIGURES 1–7. Chromatonotus bahiaensis sp. nov. Holotype male. 1. Head, ventral view. 2. Pronotum, dorsal view. 3. Supranal plate, dorsal view. 4. Subgenital plate, ventral view. 5. Median sclerite, dorsal view. 6. Left phallomere, dorsal view. 7. Right phallomere, dorsal view.

FIGURES 27–28. Tergal modification on first abdominal segment of holotype males. 27. Chromatonotus bahiaensis sp. nov. 28. Chromatonotus diminutivus sp. nov.

FIGURES 31–34. Habitus of holotype males, dorsal view. 31. Chromatonotus bahiaensis sp. nov. 32. Chromatonotus diminutivus sp. nov. 33. Chromatonotus dextrodigitatus sp. nov. 34. Ischnoptera elegantula.