Chileporter Cepeda, 2018

Cepeda, Danilo E., 2018, New genus and species of Yponomeutidae (Lepidoptera: Yponomeutoidea) associated with Maytenus boaria Molina (Celastraceae) from Chile, with descriptions of immature stages and natural history observations, Insecta Mundi 647, pp. 1-12 : 2-3

Chileporter Cepeda , new genus

Type species. Chileporter huemeri Cepeda , new species.

Diagnosis. ( Fig. 1–5 ). Chileporter n. gen. can be separated from other yponomeutids by morphological characters of the male and female genitalia. The male differs by the absence of the cornuti and by the unique shape of the uncus, socii, and gnathos, and the female differs by the form of the corpus bursae and signum. Also, the forewing lacks a pterostigma and has an open discal cell, and the hindwing has veins M 3 +CuA 1 not at a right angle with M 1, and vein A 3 absent. This genus is likely in a clade with the yponomeutid genera Zelleria , Kessleria , and Paradoxus , because of similarities in both male genitalia (valva simple, saccus slender) and female genitalia (ductus bursae elongated, signum usually present). The morphological features that distinguish Chileporter n. gen. from these closely related genera are presented comparatively in Table 1 .

Description. Adult. 11–13.5 mm wingspan (n = 20). Labial palpi held obliquely, third segment subequal in length to first. Forewing lanceolate with acute apex; pterostigma absent; discal cell open; Sc does not reach costa; R 3, R 4 and R 5 sub-parallel. Hindwing with termen acute; Sc strongly sclerotized; M 1 and M 2 widely separated towards termen; M 3 + CuA 1 parallel to CuA 2, not arranged at right angle with M 1; A 3 absent. Second abdominal sternum with small sclerotized central bar. Synapomorphic presence of spinelike setae on the abdominal tergum ( Sohn et al. 2013). Larva. Seta V1 on the larval head is elongated. In the last stage larvae, the formula of SV-setae on abdominal segments A1, 2, 7, 8, 9 corresponds to 2: 3: 2: 1: 1; A8 with SV uni-setose; in A9, seta D1 is not so close to D2; SV uni-setose; integument with star-shaped micro-processes. Pupa. Front with small central incision. Clypeus trapezoidal, wider than long. Labium less than a third the length of proboscis. Antennae slightly longer than forewing.

Male genitalia. ( Fig. 6–11 ). Uncus wide, anterior margin rounded, tuba analis with broad base and sclerotized. Socii elongate, sub-triangular, covered with long setae with bifid apex. Tegumen wider than long. Gnathos rounded with strong marginal spinose processes. Saccus slender and moderately short. Valva simple, longer than wide; costa arched in the middle and cucullus oriented upwards. Sacculus not

developed. Phallus slender, elongated and acutely lanceolate towards apex. Pleural lobe on A8 enlarged with broadly rounded margin.

Female genitalia. ( Fig. 12–15 ). Papillae anales simple. Apophyses anteriores with widely open dorsal and ventral arms, apophyses posteriores slender. Lamella post-vaginalis with central incision and covered with abundant setae. Antrum short and sclerotized. Ductus bursae elongated, completely clothed with spiniform circular processes. Corpus bursae ovoid. Signum digitiform, strongly sclerotized, with serrate margins; located on dorsal area of corpus bursae.

Host. Maytenus boaria Molina (Celastraceae) .

Etymology. The name combines the country of Chile with the surname of the eminent Chilean naturalist Carlos Emilio Porter Mosso (1867–1942). The noun is male in gender.

Remarks. The host is a widely distributed species of Celastraceae in Chile and South America. It should be noted that other genera of Yponomeutidae also have Celastraceae hosts, are generally widely distributed in the Palearctic region. Otherwise, most botanical records for Yponomeutidae include the families Celastraceae , Rosaceae , Saxifragaceae , Pinaceae , and Betulaceae ( Gershenson and Ulenberg 1998; Lewis and Sohn 2015).

Figures

Figures 1–5. Chileporter huemeri n. gen. and n. sp., adult. 1) Wings, dorsal view. 2) Head, side view. 3) Wing veins. Scale bar: 1 mm (1, 2, 3). 4). Sternum 2. Scale bar: 0.5 mm. 5). Tergum spiny setae. Scale bar: 0.25 mm.

Figures 6–11. Chileporter huemeri n. gen. and n. sp., adult male. 6). Male genitalia. 7) Socii. 8) Gnathos. 9) Valva. 10) Phallus. 11) Eighth pleural segment. Scale bar: 0.25 mm.

Figures 12–20. Chileporter huemeri n. gen. and n. sp. 12–15. Adult female. Scale bar: 0.25 mm. 12) Female genitalia. 13) Ductus bursae. 14) Corpus bursae. 15) Signum. 16) Larva, dorsal view. Scale bar: 1.0 mm. 17–20. Larval structures. Scale bar: 0.20 mm. 17) Mandible. 18) Crochets. 19) Microprocesses on integument. 20) Antennae.