Stenoscelidea guanaya, 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 : 365-366

Stenoscelidea guanaya sp. nov.

Type material. HOLOTYPE: ♀, ‘ Bolivia: La Paz, Guanay, x-xi.1993, L. E. Peña’ ( USNM).

Description. Female (holotype). Dorsal coloration. Head black; posterior third of clypeus and short longitudinal stripe between ocelli and postocular tubercle, and between each ocellus dark yellow; antennal segments I to IV dark reddish brown; pronotum yellow with humeral surface, narrow transverse stripe near posterior margin, two discoidal spots at posterior lobe, lateral to middle line and close to anterior lobe, and wide longitudinal stripe running on middle third of pronotal disk from posterior margin to middle black; collar black with middle third yellow; scutellum yellow; clavus black with claval vein dark yellow; corium yellow with a conspicuous, black, tear-shaped mark from base to middle; hemelytral membrane black; connexival segments III to VII yellow with anterior angle and posterior third black; connexival segments VIII and IX with anterior half dark yellow and posterior half black; abdominal tergites III to VI black with wide, yellow, rectangular spot on middle third, VII black with triangular yellow spot on anterior half, and VIII and IX black.

Ventral coloration. Head yellow; rostral segments I to IV dark brownish orange; prothorax yellow with two black marks, one discoidal, small close to proacetabula, other transversal and located on anterior pleural area; mesothorax yellow with an elongate black stripe; metathorax yellow; anterior and posterior lobe of metathoracic scent gland peritreme yellow; coxae dark yellow with dark brown and orange reflections; trochanter dark reddish brown; femora dark reddish brown with posterior third black; tibiae dark reddish brown with anterior joint black; tarsi dark reddish brown (hind legs absent); abdominal sternite III yellow, IV to VII yellow with anterior margin lateral to middle third dark yellow; pleural margin III to IX yellow with anterior angle and posterior third black; gonocoxae I black and laterally yellow; paratergites VIII and IX yellow.

Structure. Head. Rostrum reaching posterior border of mesosternum; rostral segment I almost reaching apex of head; rostral segment II shorter than IV. Pronotum. Collar present; frontal angles rounded, not exposed; humeral angles obtuse, not expanded. Hemelytra. Macropterous, extending beyond apex of last abdominal segment. Legs. Fore femur unarmed; middle femur ventrally armed with one spine close to posterior third; hind femur absent in holotype.

Measurements (mm). Body length 15.38. Head length including apex of clypeus 1.40; width across eyes 2.28; interocular distance 1.02; interocellar distance 0.35; length of antennal segments: I – 3.08, II – 3.60, III – 3.00, IV – 4.88. Pronotum length 3.12; maximum width across humeral angles 4.42. Scutellar length 2.32; width 1.96.

Differential diagnosis. Stenoscelidea guanaya sp. nov., and S. tibialis Brailovsky & Barrera, 1996 , share the following conditions: hemelytral membrane dark brown to black, antennal segments I to III black to reddish brown, and fore and middle tarsus entirely dark reddish brown.

In S. guanaya sp. nov. the fore and middle femora are dark reddish brown, with posterior third black, fore and middle tibiae dark reddish brown with anterior joint black, rostral segments I to IV dark brownish orange, anterior and posterior lobe of metathoracic scent gland peritreme yellow and apical angle of corium black.

In S. tibialis the fore and middle femora are entirely pale orange, the fore and middle tibiae pale orange, rostral segments I to IV yellow (apex of IV black), anterior and posterior lobe of peritreme black, and apical angle of corium yellow.

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

Distribution. Only known from Bolivia (Guanay).