Petalops necopinus, Brailovsky, 2021

Brailovsky, Harry, 2021, Illustrated key to the species included in the genus Petalops Amyot & Serville 1843 (Hemiptera: Heteroptera: Coreidae: Coreinae: Acanthocephalini), with description of four new species and new distributional notes, Zootaxa 4985 (4), pp. 564-573 : 568

Petalops necopinus sp. nov.

( Fig. 6 )

Description. Male. Dorsal coloration. Head yellowish orange with two broad longitudinal black stipes running lateral to midline; inner angle of antenniferous tubercles, preocular area, ocellar tubercles, upper border of postocular area and neck black; antennal segment I pale yellowish orange with basal joint and narrow apical ring black; segments II and III pale yellowish orange with basal joint creamy yellow and narrow apical ring black; segment IV missing; pronotum brown with bluish green reflections; pronotal disk with a yellow transverse band which spreads anteriorly along the anterolateral margins; scutellum brown with bluish green reflections; lateral margins and apex yellow; clavus and corium brown with bluish green reflections; costal and apical margin, and claval and corial veins yellow; hemelytral membrane brown with basal angle darker; connexival segments III–VII pale orange with upper border yellow; dorsal abdominal segments III–VI pale orange, VII pale orange with posterior margin black. Ventral coloration. Head including the buccula brownish orange with pale yellow stripes behind eyes; rostral segments I–II pale castaneous, III–IV yellow (apex of IV brown); pro-, and metasternum castaneous; mesosternum pale orange; proacetabulae black with bluish-green reflections and anteriorly with yellow short, narrow longitudinal stripe; meso- and meta-acetabulae including the supracoxal spine black with bluish-green reflections; propleuron and mesopleuron reddish orange with upper margin darker and tinged with bluish-green reflections; metapleuron reddish orange; anterior and posterior lobes of metathoracic peritreme black; coxae shiny black; fore and middle trochanter yellow; hind trochanter shiny black; fore and middle femora, tibiae and tarsi pale yellowish orange with femoral spines brown; hind femur with anterior half pale yellow and posterior half shiny black; spines and tubercles black; hind tibiae pale yellowish orange with anterior third dark shiny brown, and spines brown except the posterior spines yellowish orange; hind tarsi pale yellowish orange; abdominal sterna II–VI pale yellowish orange, VII pale yellowish orange with posterior border black; pleural abdominal margins III–VII and rim of abdominal spiracles pale yellowish orange; genital capsule black. Structure. Rostrum reaching anterior margin of abdominal sternite III; humeral angles with acute spine directed backward; posterolateral borders of pronotum with small tubercles; hind femora incrassate, with two rows of acute and strong spines; basal third with three rows of short tubercles, and near basal angle with one stout and short spine.

Female. Unknown.

Measurements (mm). Male. Body length 20.45; head length 2.29; head width across eyes 2.66; interocular distance 1.00; preocular distance 1.00; interocellar distance 0.42; antennal segments: I 3.59, II 3.53, III 2.91, IV missing; rostral segments: I 1.50, II 1.50, III 1.94, IV 1.30; pronotum: total length 3.65; maximum width across humeral angles including the spine 6. 13; scutellum: length 2.66, width 2.17.

Type material. HOLOTYPE male: PERU: Department of Loreto, 100 mi NE Iquitos, Explornapo Camp , 23–30-VI-1991, S. W. Dunkle ( UNAM).

Discussion. This species is included in the “ distinguendus ” group and recognized by having the hind femur bicolored with anterior half pale yellow and posterior half black; pronotal disk brown with bluish-green reflections, and a yellow transverse band, which spreads anteriorly along lateral margins; and abdominal sterna pale yellowish orange with posterior border of sternite VII and genital capsule black. Petalops distinguendus , a closely related species has also the hind femur bicolored with anterior half yellow and posterior half black, but the pronotal disk is pale castaneous orange with bluish-green reflections, without yellow transverse band which spreads anteriorly along anterolateral margins.

Distribution. Only known from Peru.

Etymology. From the Latín, “unexpected”.

Figures

FIGURES 3–10. Dorsal view of Petalops spp. 3, P. azureus (Burmeister) (female). 4, P. bellator Brailovsky (male). 5, P. lautus sp. nov. (female). 6, P. necopinus sp. nov. (male). 7, P. occulta Brailovsky (female). 8, P. thoracicus Montandon (male). 9, P. ambiguus Brailovsky (female). 10, P. distinguendus Breddin (female).