Antipetalops, Brailovsky, 2021

Brailovsky, Harry, 2021, Illustrated key to the genera included in the tribe Acanthocephalini (Hemiptera Heteroptera: Coreidae: Coreinae), with descriptions of three new genera, seven new species, new taxonomic rearrangements, and a key to genera of Placoscelini, Zootaxa 5082 (5), pp. 457-475 : 463-464

Antipetalops gen. nov.

Type species: Antipetalops colombianus , sp. nov., here designated.

Description. Head. Wider than long across eyes, quadrate, not declivent, dorsally flat, parallel sided in front of eyes; tylus projecting beyond juga as a compressed plate, with apex extending upward as a single, acute, triangular projection; juga apically quadrate, not visible above, deflexed below antenniferous tubercle; antenniferous tubercle unarmed, closely appressed to tylus; antennae longer than total body length; antennal segment I stouter than segments II to IV, slightly curved outward, longer than maximal length of head, with inner face not longitudinally ridge; antennal segments II and III cylindrical, moderately slender; antennal segment IV narrow, fusiform, elongate; antennal segment IV the longest, I longer than II, and III the shortest; ocelli barely raised, located below posterior border of eyes; preocellar pit small, scarcely evident; eyes hemispherical, protuberant; Figs. 4–5 ) depression with single sulcus; postocular tubercle barely exposed in dorsal view; buccula semicircular, short, elevated, unarmed, not projecting beyond anterior border of eye; rostrum reaching posterior border of mesosternum; in male rostral segments I and III subequal, II the shortest and IV shorter than I and II; in female rostral segment I the longest, II and IV subequal and III longer than II and IV. Thorax. Pronotum wider than long, trapezoidal, declivous, with distinct collar; frontal angles blunt; anterolateral margins of pronotum obliquely straight, nodulose; anterior pronotal lobe rectangular, flat; calli almost flat, impunctate; posterior pronotal lobe raised, convex; posterolateral margins obliquely sinuate, regularly dentate; pronotal disc punctate not tuberculate; humeral angles extending laterally into broad spine, barely turning backwards; posterior margin straight, smooth, with paired triangular processes subacute, reaching basal third of scutellum. Metapleural supracoxal spine absent on each sex; metathoracic scent gland opening elongate, directed anterolaterally; peritreme raised, bilobate, with two nearly fused auricles, anterior auricle globose, posterior auricle, small, digitiform. Prosternum with deep concavity; mesosternum barely sulcate; metasternum flat. Scutellum. Longer than wide, triangular, apically flat. Legs. Sexually dimorphic. Males. Fore and mid femora slender, ventrally armed with two rows of spines, the inner row with stronger and robust spines, outer row with small and scattered spines, and always with two subapical spines; hind femur incrassate, much more than in females, ventrally armed with one row of stout, large spines, dorsal and lateral surfaces tuberculate; dorsally without acute spine near the base. Fore and mid tibiae cylindrical, dorsally sulcate, unarmed; hind tibiae slightly expanded on the outer surface, sulcate, with inner surface with one row of stout spines and outer surface unarmed. Females. Fore and mid femora slender, ventrally armed with one row of spines and two subapical spines; hind femur slightly incrassate, ventrally armed with one row of stout spines and two subdistal spines; dorsally without acute spine near the base; dorsally and laterally with short tubercles. Fore and mid tibiae cylindrical, sulcate, unarmed; hind tibiae simple, cylindrical, narrow, and lacking spines on the inner and outer surface. Hemelytra. Macropterous, extending beyond apex of last abdominal segment; costal margin emarginate; apical corial margin slightly sinuate; apical angles extending beyond of the middle third of hemelytral membrane. Abdomen. Connexival segments raised above tergum; posterior angles not spined. Male genitalia. Genital capsule. Posteroventral edge with lateral angles rounded, and the area between them nearly convex ( Fig. 39 ). Parameres. See figures 27 and 28.

Female genitalia. Abdominal sternite VII with fissure visible; plica elongate, rectangular, apically convex; valvulae I triangular, in caudal view close to each other; laterotergite VIII quadrate with spiracle visible; laterotergite IX quadrate, longer than laterotergite VIII.

Pubescence. Head dorsally and pronotal disc densely clothed with erect golden setae; scutellum, clavus and corium clothed with intermixed short decumbent or erect setae; head ventrally, and pro-, meso-, and metapleura glabrous; pro-, meso-, and metasternum and abdominal sterna clothed with erect golden setae.

Differential diagnosis. Antipetalops gen. nov., ( Figs. 4–5 ) is segregated from Anomalopetalops ( Figs. 1–3 ) by having the hind tibiae of each sex slightly expanded on the outer surface; hind femora of each sex without acute spine near the base; head, antennal segments I–IV, pronotal and scutellar discs, clavus, corium, legs and abdominal sterna densely clothed with large and short erect and decumbent silvery setae; the antennae longer than total body length; and the humeral angles of pronotum extending laterally into broad not acute spine, barely turning backward. In Anomalopetalops the hind tibiae on male and female are cylindrical, not expanded; hind femora in males basally armed with a short acute spine (in female unarmed); head, antennal segments I–IV, pronotal and scutellar disc, clavus, corium, legs, and abdominal sterna almost glabrous with few scattered tiny setae usually decumbent; the antennae shorter than total body length; and humeral angles extending laterally into broad sharp spine.

Etymology. From the Greek, “anti”, meaning opposed to or against in combination with the generic name Petalops . The gender is masculine.

Figures

FIGURES 1‒9. Dorsal view. 1, Anomalopetalops ariquemesus sp. nov. (male) 2, Anomalopetalops brulei sp. nov. (male). 3, Anomalopetalops diamantinus sp. nov. (male). 4, Antipetalops colombianus sp. nov. (male). 5, Antipetalops discretus sp. nov. (female). 6, Zygometapodus castaneus (Blöte) (female). 7, Cryptopetalops llorentei sp. nov. (male). 8, Cryptopetalops llorentei sp. nov. (male). 9, Cryptopetalops pluteus sp. nov. (male).

FIGURES 38‒43. Male genital capsule. 38, Anomalopetalops ariquemesus sp. nov. 39, Antipetalops colombianus sp. nov. 40, Cryptopetalops llorentei sp. nov. 41, Cryptopetalops pluteus sp. nov. 42, Petalops napoensis Brailovsky. 43, Petalops thoracicus (Thunberg).