Stenoscelidea pucalpa, Brailovsky & Barrera, 2012

Brailovsky, Harry & Barrera, Ernesto, 2012, Review of the Stenoscelidea complex and key to the known genera of Stenoscelideini (Hemiptera: Heteroptera: Coreidae), Acta Entomologica Musei Nationalis Pragae (suppl.) 52 (2), pp. 355-370 : 361-364

Stenoscelidea pucalpa sp. nov.

( Figs. 12 , 32 , 34 )

Type material. HOLOTYPE: ♁, ‘ Peru: Pucalpa, viii.1991, A. Ugarte P. ’ ( USNM) . PARATYPES: PERU: 1 ♁ 1 ♀, same data as for holotype ( UNAM, USNM).

Description. Male (holotype). Dorsal coloration. Head yellow with antenniferous tubercle, ocellar tubercle, postocular tubercle, and neck black; clypeus (except middle third) shiny castaneous brown; antennal segments I to IV black; pronotum yellow with anterolateral margins, humeral surface, a narrow transverse stripe near posterior margin, four elongate, discoidal spots, two at anterior lobe, and two at posterior lobe, and one longitudinal, wide stripe running from posterior lobe to middle third of pronotal disk black; scutellum yellow; clavus black with claval vein yellow; corium yellow with diffuse black fuscosity, some black punctures and a conspicuous, black, tear-shaped mark from base to middle of endocorium; hemelytral membrane black; connexivum yellow with posterior third black; abdominal tergites black with large, yellow, rectangular mark near middle third.

Ventral coloration. Head yellow with two black discoidal spots, lateral to midline and located near posterior margin and close to pronotal collar; rostral segment I ventrally yellow and apex and dorsal surface black; segments II to IV yellowish orange (apex of IV black); propleura and mesopleura yellow with three black, irregular spots; metapleura yellow with two black spots; pro-, meso-, and metasternum yellow, and laterally black; anterior and posterior lobe of metathoracic scent gland peritreme black; coxae shiny orange with basal third dark brown; trochanter shiny orange; femora dorsally black with basal third and ventral surface shiny orange; tibiae and tarsi dark reddish brown; abdominal sternites III to VII yellow with anterior border, one discoidal spot lateral to midline, and elongate stripe at middle third of each sternite black; longitudinal elongate stripe fused with anterior transverse black line; pleural margins yellow with posterior third black; genital capsule yellow with black spots lateral to midline; abdominal spiracle yellow.

Structure. Head. Rostrum reaching posterior border of mesosternum; rostral segment I reaching apex of head; rostral segment II shorter than IV. Pronotum. Collar present; frontal angles rounded, not exposed; humeral angles not expanded, with short acute teeth; triangular process absent. Hemelytra macropterous, extending beyond apex of last abdominal segment. Legs. Femora ventrally armed with a single row of numerous small spine-like teeth; tibiae sulcate, straight, not sinuate, not emarginated ( Fig. 12 ). Genital capsule. Posteroventral border straight with short V-shaped concavity medially ( Fig. 32 ).

Measurements (mm). Body length 11.20. Head length including apex of clypeus 1.28; width across eyes 1.84; interocular distance 0.76; interocellar distance 0.35; length of antennal segments: I – 2.60, II – 3.04, III – 2.40, IV – 4.60. Pronotum length 2.08, maximum width across humeral angles 3.20. Scutellar length 1.44, width 1.16.

Female. Habitus and color similar to male holotype. Head ventrally entirely yellow; tylus castaneous brown; prosternum and metasternum yellow with small black discoidal spot lateral to middle line; mesosternum yellow with wide black spot lateral to midline; connexival segments VIII and IX yellow; abdominal tergites VIII and IX black; abdominal sterna III to V yellow with anterior border black; sterna VI and VII yellow with lateral border black and middle third yellow; abdominal sternites III to VII with black discoidal spot lateral to middle line; abdominal spiracle, and genital plates yellow.

Structure. Femora ventrally armed with a single row of two or more small spine-like teeth; tibiae with outer dilation phylliform, without prominent teeth or emarginations; inner dilations straight, sinuate, not expanded.

Measurements (mm). Body length 11.70. Head length including apex of clypeus 1.08; width across eyes 1.96; interocular distance 0.95; interocellar distance 0.37; length of antennal segments: I – 2.52, II – 2.84, III – 2.24, IV – 4.92. Pronotum length 2.40; maximum width across humeral angles 3.16. Scutellar length 1.72; width 1.28

Variation. Posterior margin of pro-, meso- and metapleura with diffuse yellowish white marks.

Differential diagnosis. Stenoscelidea pucalpa sp. nov., like S. saphes sp. nov., and S. tibialis Brailovsky & Barrera, 1996 , has the hemelytral membrane entirely dark brown to black, the antennal segments I to III as well as the fore, middle, and hind tarsus entirely dark reddish brown to black, the anterior and posterior lobe of metathoracic scent gland peritreme black, and the connexival segments III to VII and the pleural margin of abdominal sternites III to VII yellow with the posterior third black.

In S. pucalpa sp. nov. the coxae are shiny orange with basal third dark brown, the trochanters shiny orange, the femora dorsally black with basal third and ventral surface shiny orange, the tibiae dark reddish brown and the outer dilation of the female hind tibiae slightly expanded ( Fig. 12 ).

In S. tibialis the coxae are yellow with basal third dark brown, the trochanters and femora pale castaneous orange, the fore and middle tibiae pale castaneous orange and hind tibiae reddish brown with basal third and subapical ring pale castaneous orange, and the outer dilation of female hind tibiae is not expanded ( Fig. 16 ).

The head dorsally and the trochanter are black in S. saphes sp. nov., and yellow to shiny orange in S. pucalpa sp. nov. and S. tibialis .

Etymology. Named after the type locality; noun in apposition.

Distribution. Only known from Peru (Pucalpa).

Figures

Figs. 1–16. Hind leg. 1–2 – Stenoeurilla aenescens (Stål, 1870); 2 – S. maya (Brailovsky, 1983); 3 – Plaxiscelis pagana (Burmeister, 1835); 4 – Nyttum punctatum (Dallas, 1852); 5 – Stenoscelidea albovaria Westwood, 1842; 6–7 – S. blotei Brailovsky & Barrera, 1996; 8 – S. hilaris Breddin, 1903; 9 – S. saphes sp. nov.; 10 – S. morona Brailovsky & Barrera, 1996; 11 – S. t-nigra (Costa, 1863); 12 – S. pucalpa sp. nov.; 13 – S. roraima Brailovsky & Barrera, 1996; 14–15 – S. rubra Montandon, 1895; 16 – S. tibialis Brailovsky & Barrera, 1996.

Figs. 28–32. 28–31 – pronotum and scutellum: 28 – Stenoeurilla aenescens (Stål, 1870); 29 – S. maya (Brailovsky, 1983); 30 – Stenoscelidea albovaria Westwood, 1842; 31 – S. hilaris Breddin, 1903. 32 – Stenoscelidea pucalpa sp. nov., caudal view of male genital capsule.

Figs. 33–36. Dorsal views of Stenoscelidea species. 33 – S. albovaria Westwood, 1842, female; 34 – S. saphes sp. nov., male (holotype); 35 – S. pucalpa sp. nov., male (holotype); 36 – S. t-nigra (Costa, 1863), male.