Peltophorus Schoenherr, 1845: 451

Anzaldo, Salvatore S., 2017, Review of the genera of Conoderinae (Coleoptera, Curculionidae) from North America, Central America, and the Caribbean, ZooKeys 683, pp. 51-138 : 91-92

Peltophorus Schoenherr, 1845: 451 Figs 16 , 33 , 62 , 99

= Apatorhynchus Desbrochers, 1891: 40 [Syn.: Champion 1906b: 20]. Type species: Zygops leopardinus Desbrochers, 1891 [by monotypy].

= Opalocetus Desbrochers, 1910: 126 [unjustified replacement name for Peltophorus ( Champion 1910b: 211)].

Type species.

Peltophorus polymitus Boheman, 1845 [by original designation].

Gender.

Masculine.

Diagnosis.

This genus is similar only to Zygops with the large exposed pygidium that is visible in dorsal view and the sulcate subapical pronotal constriction, and can be readily distinguished from Zygops by the following characters: the shape of the eyes, which in Peltophorus are generally not as large and not extending as laterally on the head as in Zygops , the distal setal comb of the metatibia that extends more than a third to the base of the tibia ( Champion 1906b: 20; Fig. 33 ) the femora always with one large triangular tooth (with one or several smaller teeth in Zygops ) and the unique mes oventrite that is ventrally protruding along the posterior margin (Fig. 16 ), and differs from the mesoventrite of Zygops which is usually unmodified (or with small posterolateral processes in a few species).

Notes.

See Böving (1926) for description of larval and pupal morphology and González-Hernández et al. (2015) and Figueroa-Castro et al. (2016) for an overview of the feeding damage of P. polymitus Boheman and P. adustus (Fall) in Mexico.

Keys .

Sleeper 1963: 216 (to U.S. species), Casey 1892: 459 (to U.S. species).

Phylogenetic relationships.

Related to Zygops and the South American genera Parazygops and Colpothorax due to the exposed pygidium, large metepimeron, transverse scutellum, and sulcate subapical pronotal constriction.

Host associations.

The species of Peltophorus are associated with several species of Agave L. ( Asparagaceae Juss.), including Agave palmeri Engelm. ( Sleeper 1963: 216, González-Hernández et al. 2015, Figueroa-Castro et al. 2016).

Described species.

Three.

Range.

Southwestern U.S.A., Mexico, Honduras.

Figures

Figures 10 - 18. Variation in the mesoventrite. 10 Lechriops californicus [ASUHIC 0024146] showing relatively parallel carinae marking the lateral margin of the rostral channel and a closure of the channel on the metaventrite 11 Microzygops nigrofasciatus [ARTSYS 0000797] with tubercles anterior to the mesocoxae and slight, arcuate carinae on the anterior region of the mesoventrite (encircling the central scaled region) 12 Paramnemyne decemcostata [ARTSYS 0000798] showing tuberculate posterolateral margins of the mesoventrite and a transverse carina near the posterior margin of the metaventrite 13 Pseudolechriops klopferi [SSAC 0001060] showing a deep ovoid receptacle on the meso- and metaventrite 14 Turcopus viscivorus [ARTSYS 0000530] showing a receptacle on the mesoventrite with prominently carinate posterior margin 15 Lissoderes subnudus [SSAC 0001066] showing a completely unmodified mesoventrite covered with multifid setae 16 Peltophorus adustus [ASUHIC 0031514] showing a ventrally expanded posterior margin of the mesoventrite to receive the rostrum in repose 17 Philenis fuscofemorata [ARTSYS 0000659] with tubercles at the posterolateral margins of the mesoventrite and a deep depression at the posterior margin in between 18 Philinna bicristata [ARTSYS 0000799] showing slight lamellate processes at the posterolateral margins of the mesoventrite as well as transversely flattened projections behind the procoxae.

Figures 19 - 36. Variation in the metatibial apex. 19 Mesotibial apex of Lechriops vestitus illustrating parts of the tibial apex: a) posterior apical angle with large, curved uncus; b) middle of the apex with produced, rounded inner flange; c) anterior apical margin with premucro; d) oblique ridge of premucro; e) apical setal tuft 20 Male Trichodocerus brevilineatus [ARTSYS 0000609] with a tibial uncus arising at the middle of the apex 21 Cratosomus punctulatus mexicanus [ASUHIC 0031510] with thick fascicles of golden setae near the anterior apical margin and a dense setal brush at the posterior apical face 22 Pseudopiazurus centraliamericanus [ASUHIC 0086627] with a large, subapical premucro 23 Piazurus laetus [SSAC 0001077], showing a typical tibial apex for that genus 24 Acoptus suturalis [ASUHIC 0016915] 25 Cylindrocopturinus pictus [SSAC 0001288] with a pointed, premucro-like inner flange 26 Pseudolechriops klopferi [SSAC 0001060] showing an elongate, uncus-like inner flange. 27 Arachnomorpha circumlineata [ARTSYS 0000535] 28 Archocopturus medeterae [ASUHIC 16884] 29 Cylindrocopturus adspersus [ASUHIC 0016896] with a rounded, produced inner flange 30 Helleriella longicollis [ASUHIC 0065241] with a very short uncus 31 Lissoderes cecropiae [ASUHIC 0064707] with an elongate uncus and minute premucro 32 Phileas granulatus [ARTSYS 0000528] with the middle of the apex (between uncus and premucro) sunken 33 Peltophorus adustus [ASUHIC 0012325] with a short uncus and posterodistal setal comb extending halfway to the base of the tibia 34 Zygops erythropygus [ASUHIC 0086640] with short posterodistal setal comb. 35 Philenis flavipes [ASUHIC 0065102] 36 Philinna bicristata [ARTSYS 0000799] with a small tooth at the anterior apical angle.

Figures 55 - 66. Miscellaneous morphological structures. 55 Hoplocopturus sulphureus [ARTSYS 0000801] with an overlay showing an elongate second funicular article that is more than twice the length of the first 56 Lissoderes subnudus [SSAC 0001064] with an overlay showing a second funicular article that is subequal to the first, and seven distinct funicular articles 57 Philinna bicristata [ARTSYS 0000799] showing a funiculus composed of six articles 58 Microzurus sp. [SSAC 0001290] showing a short, slender fifth tarsal article and minute claws 59 Philides comans [ARTSYS 0000804] with a broad tooth at the base of the tarsal claw 60 Left metafemoral apex of Piazurus trifoveatus [SSAC 0001118] that is unarmed at the mesal and lateral faces 61 Left metafemoral apex of Cylindrocopturinus pictus [SSAC 0001288] with a tooth only at the mesal face 62 Left metafemoral apex of Peltophorus polymitus seminiveus [SSAC 0001117] showing a small tooth at both mesal and lateral faces 63 Left metafemoral apex of Hoplocopturus sulphureus [ARTSYS 0000801] showing a small tooth at the lateral face and an acuminate process at the mesal face 64 Metaventrite of Pseudopiazurus centraliamericanus [SSAC 0001291] showing deep, arcuate sulc 65 Lateral view of the metathorax of Euzurus ornativentris [ARTSYS 0000796] showing a large tubercle in anterior to the metacoxa 66 Dorsal view of the profemora of Copturomimus caeruleotinctus [SSAC 0001059] showing denuded, striolate regions.

Figures 99 - 102. Lateral and dorsal habitus images of Zygopini. Scale bars = 2 mm unless otherwise specified. 99 a-b Peltophorus polymitus suffusus [ASUHIC 0016837]. 100 a-b Phileas granulatus [ARTSYS 0000528]. 101 a-b Philenis flavipes [ASUHIC 0065102]; scale bar for 101 a = 1 mm 102 a-b Zygops vitticollis [ASUHIC 0086634]; scale bar for 102 b = 5 mm.