Anomalopetalops, 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 : 459-460

Anomalopetalops , gen. nov.

Type species: Anomalopetalops brulei , 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; Figs. 4–5 ) depression with single sulcus; juga apically quadrate, not visible above, deflexed below antenniferous tubercle; antenniferous tubercle unarmed, closely appressed to tylus; antennae shorter 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; 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; 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; rostral segment IV the shortest, III the longest, I longer than II or subequal. Thorax. Pronotum wider than long, trapezoidal, declivous, with distinct collar; frontal angles blunt, in a simple curve; anterolateral margins obliquely straight, nodulose; anterior pronotal lobe rectangular, flat; calli almost flat, impuntate; posterolateral margins obliquely sinuate, regularly dentate; humeral angles extending laterally into broad sharp spine, barely turning backwards; posterior margin straight and smooth, with paired triangular processes subacute, and reaching basal third of scutellum; posterior pronotal lobe raised, convex; pronotal disc punctate, not tuberculate. Metapleural supracoxal spine absent on each sex; metathoracic scent gland opening elongate, directed anterolaterally; peritreme raised, with two nearly fused auricles. 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 and robust spines; dorsally and laterally tuberculate; dorsally with small, acute, spine near the base. Fore and mid tibiae cylindrical, dorsally sulcate, unarmed; hind tibiae simple, cylindrical, narrow, dorsally 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 and laterally with short tubercles. Fore and mid tibiae cylindrical, dorsally sulcate, unarmed; hind tibiae simple, cylindrical, narrow, and lacking spines. Hemelytra. Macropterous, extending beyond apex of last abdominal segment; costal margin emarginate; apical corial margin slightly sinuate; apical angles extending beyond 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 straight ( Fig. 38 ). Parameres. See figures 25–26, and 37.

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

Pubescence. Head, antennal segments I–IV, pronotal and scutellar discs, clavus, corium, legs and abdominal sterna with few scattered tiny setae usually decumbent; calli, tibiae, and thoracic sterna with abundant erect setae.

Discussion. There are many similarities between Petalops ( Figs. 21 ), and Anomalopetalos gen. nov. ( Figs. 1–3 ). In each genus, the hind tibiae are simple, not expended, rostral segment IV is the shortest and III the longest, the rostrum reaches the posterior border of the mesosternum, the connexival segments III to VII are not spined apicolaterally, the humeral angles are acute laterally, with a medium size spine slightly directed backward, and the metathoracic peritreme bilobate. The female of each genus also lacks metapleural supracoxal spines and the hind femora without basal spine.

The following combination of characters distinguishes both genera. The males of Petalops have a large metapleural supracoxal spine (absent in Anomalopetalops ), the hind femora with a large basal spine (in Anomalopetalops the spine is short and acute), and the dorsal and ventral surfaces of the body tinged with extensive bluish green metallic reflections (usually scattered in Anomalopetalops ). The male genital capsule differs in the shape of the posteroventral border ( Figs. 38, 42–43 ) and the general development of the parameres are different ( Figs. 25–26, 35–37 ).

Cleotopetalops ( Fig 14 ), like Anomalopetalops , has the hind tibiae simple, scutellum longer than wide, body elongate, supracoxal spine absent in males, posterior triangular processes of the pronotum visible, humeral angles of pronotum projected into an acute spine, and body surface without bluish green reflections. In Anomalopetalops the head, pronotum, and scutellum are scattered with few erect setae, the humeral angles projected into a medium size spine that is directed outward and slightly backward, and rostral segment IV always shorter than III segment. In Cleotopetalops , the head, pronotum, and scutellum are densely clothed with erect setae, the humeral angles conspicuously produced into a sharp spine, turned outward and distinctly backward, and rostral segment IV shorter or longer than III.

Etymology. The new genus is named for its similar appearance to Petalops . The word is composed of the Latin “ anomalus ”, meaning different from what is usual or irregular and 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).

FIGURES 19‒24. Dorsal view. 19, Ctenomelynthus coxalis Breddin (male). 20, Meluchopetalops nigrilineatus (male). 21, Petalops fortunatus Dallas (male). 22, Stenometapodus guttifer (Stål) (male). 23, Leptopetalops gracilis Breddin (female). 24, Salapia dimidiata (Dallas) (male).

FIGURES 25‒37. Parameres. 25‒26, Anomalopetalops ariquemesus sp. nov. 27‒28, Antipetalops colombianus sp. nov. 29‒ 30, Cryptopetalops llorentei sp. nov. 31‒32, Cryptopetalops pluteus sp. nov. 33‒34, Petalops napoensis Brailovsky. 35‒36, Petalops thoracicus (Thunberg). 37, Anomalopetalops brulei sp. nov.

FIGURES 10‒18. Dorsal view. 10, Lucullia flavovittata Stål (male). 11, Ichilocoris mirabilis Brailovsky & Barrera (male). 12, Thymetus ochropterus (Stål) (female). 13, Laminiceps ledezmae Brailovsky & Barrera (female). 14, Cleotopetalops polhemi Brailovsky (female). 15, Cervantistellus guerrerensis Brailovsky & Barrera (female). 16, Empedocles tenuicornis (Westwood) (female). 17, Acanthocephala thomasi (Uhler) (male). 18, Stenometapodus v-luteum Breddin (male).