Xylodonta, BECKER, 2014

42. XYLODONTA BECKER, 2014 View in CoL

Xylodonta Becker, 2014: 28 View in CoL . Type species: Nystalea xylinata Walker, 1865: 759 View in CoL .

Adults. ( Figure 4E View FIGURE 4 , 11N, O View FIGURE 11 ) Head: male antennae bipectinated until or beyond basal half, female antennae simple or bipectinated to basal half antennae; antennal tufts present; third segment of labial palpi short; ocelli reduced. Thorax: male prothoracic leg without scent pocket; very large epiphysis; tarsal claws bifid. Wings: males 30 to 45 mm; color pattern brown with a woody pattern; accessory cell absent; hindwing with Sc-Rs stalked. Male terminalia ( Figure 7O View FIGURE 7 ): eighth tergite with midplate in most of the species; eighth sternite thick, strongly sclerotized. Distal margin of eighth sternite, in male, strongly bifurcate, each arm with serrate margins, often asymmetrical. Valvae sclerotized with SSO slightly developed; costa heavily sclerotized; the uncus is large, sclerotized hook; socii vestigial; juxta simple hexagonal shape. Aedeagus simple, with foot-like callosum. Female terminalia: eighth tergite and sternite plain; papillae anales small and membranous with short setae; posterior apophyses short; anterior apophysis short; corpus bursae sclerotized and short, corpus bursae with one signum, oval shaped.

Diagnosis. The hook-like uncus, the vestigial socii and deeply concave (often asymmetrical) eighth sternite of the male are together unique to Xylodonta . However, this group has a wide variety of male genitalia morphology, which is clearly depicted in Becker (2021b).

Comments. The species belonging to this genus are not easy to identify as most of them show similar patterns. The species resemble those belonging to Dasylophia , to which they were formerly associated ( Becker 2021b). Xylodonta species have some of the most heavily sclerotized eighth sternite of the subfamily, the genital capsule is usually difficult to separate from the abdomen due to the strong sclerotizaiton. Recorded hostplants for the genus include several Fabaceae species, most of which are Lonchocarpus sp. (ACG database).

Distribution. From Mexico to Argentina.

Species included (19).

Xylodonta andrewrusselli Chacón, 2017

Xylodonta angustipennis (Schaus, 1911)

Xylodonta billhaberi Chacón, 2017

Xylodonta castrena (Jones, 1912)

Xylodonta giffordi Becker 2021

Xylodonta guarana (Schaus, 1892)

Xylodonta inca (Schaus, 1892)

Xylodonta imitans Becker 2020 View in CoL

Xylodonta markvanputteni Chacón, 2017 View in CoL

Xylodonta mocosa (Dognin, 1895)

Xylodonta monzoni Becker, 2020 View in CoL

Xylodonta ochreibasis Becker 2020 View in CoL

Xylodonta pythia (Druce, 1894) View in CoL

Xylodonta robertodelgadoi Chacón 2017

Xylodonta robusta (Jones, 1908)

Xylodonta robustoides Becker, 2020 View in CoL

Xylodonta rufitincta (Dyar, 1913) View in CoL

Xylodonta scottmilleri Chacón, 2017

Xylodonta terrena (Schaus, 1892)

Xylodonta xylinata (Walker, 1865) *