Piriana birai, Santos-Silva & Galileo & Mcclarin, 2018

Santos-Silva, Antonio, Galileo, Maria Helena M. & Mcclarin, Jim, 2018, Division of the genera Sparna Thomson, 1864 and Carterica Pascoe, 1858 (Coleoptera, Cerambycidae, Lamiinae, Colobotheini) with description of six new genera and eight new species, Zootaxa 4407 (1), pp. 1-28 : 11-13

Piriana birai sp. nov.

( Figs 28–31 )

Description. Female. Integument mostly black; mouthparts reddish brown; frons mostly reddish brown, with black areas irregularly interspersed forming a distinct wide band centrally from middle of lower eye lobes to nearly the posterior margin of upper eye lobes; antennomere IV pale yellow in basal 3/4, black in distal quarter, with narrow reddish brown ring between these two areas; antennomere V reddish brown in basal 5/6, black in distal sixth; antennomere VI reddish brown in basal 4/5, darkened in distal fifth; remaining antennomeres dark brown; pronotum with wide reddish brown band on each side, widened toward distal margin; central area of prosternum and base of prosternal process reddish brown; elytra with longitudinal orange band involving humerus, slightly surpassing basal third, acutely narrowed toward its apex; pro- and mesocoxae, pro- meso, and metatrochanteres, pro- and mesofemoral peduncles, base of pro- and mesofemoral clubs, basal third of metafemora yellowish brown, slightly lighter in basal area of femora; tarsomere V reddish brown, especially metatarsomere; tarsal claws reddish brown.

Head. Frons densely micropunctate; with short pale yellow pubescence not obscuring integument. Area between antennal tubercles and upper eye lobes with pale yellow pubescence, longer and thicker than in frons. Remaining surface of vertex densely micropunctate, opaque, glabrous. Area behind eye lobes, close to eye, densely micropunctate, smooth toward prothorax; with pale yellow pubescence close to eye, not obscuring integument, glabrous toward prothorax (this area widened behind lower eye lobes). Genae densely micropunctate, with pale yellow pubescence (except glabrous narrow distal area) not obscuring integument. Antennal tubercles densely micropunctate; with pale yellow pubescence not obscuring integument (sparser than in frons). Distance between upper eye lobes 0.15 times length of scape; in frontal view, distance between lower eye lobes 0.35 times length of scape. Antennae 2.95 times elytral length, reaching elytral apex at basal fifth of antennomere VI; scape, pedicel and antennomere III with long, erect, thick dark setae ventrally; antennomeres IV–VI with a few short dark setae ventrally and distally; antennal formula (ratio) based on length of antennomere III: scape = 1.53; pedicel = 0.10; IV = 1.00; V = 0.92; VI = 0.87; VII = 0.77; VIII = 0.92; IX = 1.02; X = 0.89; XI = 1.12.

Thorax. Prothorax 1.47 times wider than long; widest area ending in subacute angle. Pronotum transversely sulcate near base; centrally with wide, trapezoidal area with short yellowish brown pubescence not obscuring integument; laterally with dense yellow pubescence obscuring integument, longer and thicker than central pubescence. Sides of prothorax with yellow pubescence obscuring integument in narrow area close to pronotum, with yellowish brown pubescence not obscuring integument on remaining surface (shorter and finer than yellow pubescence). Ventral surface of thorax with pale yellow pubescence not obscuring integument (more grayish white depending on angle of light source). Scutellum with yellowish brown pubescence not obscuring integument. Elytra. Coarsely, abundantly punctate in basal half, gradually finer, sparser toward apex, especially in distal quarter; humeral carina distinct from base to almost apex; dorsally with two longitudinal carina, outermost distinct from humerus to at about distal fifth, innermost less distinct, from base to at about distal sixth; apex sinuous, with rounded sutural angle; light area with yellow pubescence partially obscuring integument (partially lost in the holotype); sides and distal quarter with brownish pubescence partially obscuring integument (may have been lost in remaining dark area); with long, erect, thick, dark setae in lateral margins (more abundant distally) and dorsally in distal quarter. Legs. Metatarsomere I slightly longer than II–V together.

Abdomen. Ventrites with pale yellow pubescence not obscuring integument.

Dimensions (in mm), holotype female. Total length, 6.95; prothoracic length, 1.05; basal prothoracic width, 1.20; distal prothoracic width, 1.10 (1.20 before constriction); greatest prothoracic width, 1.55; humeral width, 1.70; elytral length, 4.95.

Type material. Holotype female from BRAZIL, Pará: Belém ( Utinga ), 24.VI.1977, L. Hock col. ( MZSP).

Etymology. The new species is named after the late Ubirajara Ribeiro Martins de Souza (“Bira”).

Remarks. Piriana birai is similar to Pseudosparna flaviceps ( Figs 25–27 ), but differs as follows: elytra with longitudinal orange band involving humerus; humeral elytral carina distinct; elytral apex sinuous. In P. flaviceps , the longitudinal elytral light band does not involve humerus, humeral elytral carina almost absent, and elytral apex obliquely truncate.

Figures

FIGURES 28–35. 28–31, Piriana birai, sp. nov.; holotype female: 28, dorsal habitus; 29, ventral habitus; 30, lateral habitus; 31, head, frontal view. 32–35, Piriana consimilis, sp. nov., holotype male: 32, dorsal habitus; 33, ventral habitus; 34, lateral habitus; 35, head, frontal view.

FIGURES 18–27. 18–19, Sparna bosqi, holotype male:18, dorsal habitus (photograph by Laura Trinogga); 19, dorsal habitus, drawing by Gilmour (1954). 20, Carterica soror, holotype, dorsal habitus (from Bezark 2017). 21, Carterica soror, male (from Monné & Monné 2008). 22–23, Sparna migsominea, holotype male: 22, dorsal habitus (photograph by Laura Trinogga); 23, dorsal habitus, drawing by Gilmour (1950). 24–27, Pseudosparna flaviceps, male: 24, head, frontal view; 25, lateral habitus; 26, dorsal habitus; 27, ventral habitus.