Toleria aritai, 2020

Kallies, Axel, Ogane, Hiromichi & Yata, Naoki, 2020, A new species of the genus Toleria Walker, [1865] from northern Vietnam and Laos with establishment of a new generic synonymy in Cissuvorini (Lepidoptera, Sesiidae), Zootaxa 4728 (1), pp. 123-132 : 125-130

publication ID	https://doi.org/ 10.11646/zootaxa.4728.1.6
publication LSID	lsid:zoobank.org:pub:926ADF46-D2B6-4747-BFC9-E852DE9BAB51
DOI	https://doi.org/10.5281/zenodo.10452890
persistent identifier	https://treatment.plazi.org/id/03CE8788-FFAB-AF33-FF5D-FA49FC24FB30
treatment provided by	Plazi
scientific name	Toleria aritai
status

Treatment

Toleria aritai View in CoL Ogane & Kallies spec. nov.

( Figs 1-4 View Figures 1-8 , 9, 11, 15-17 View Figures 15-23 ).

Type material. Holotype: ♀, Vietnam, Ninh Binh Prov., Gia Vien, Cuc Phuong, 18. v. 2018, H. Ogane legit ( Figs 1, 2 View Figures 1-8 , National Museum of Nature and Science, Tsukuba-shi, Ibaraki-ken, Japan, NSMT) . Paratypes: 1 ♀, same data as holotype (collection A. Kallies, Melbourne, CAK) ; 1 ♀, same locality and date as holotype, A. Yoshida legit ( Figs 3, 4 View Figures 1-8 ; genitalia prep. Naoki Yata No. 053NY , 2018, NSMT) ; 1 ♀, Laos, Houapan, Phu Pan Xam Neua , 19-21. v. 2005, M. Takakuwa legit ( NSMT) ; 1 ♀, Laos, Vientian, Vang Vieng , 22. v. 2005, S. Nakamura legit ( NSMT) .

Description. Female. Alar expanse 33 - 35 mm; forewing 14 - 15 mm, body 18 - 19 mm.

Head: antenna simple, not serrate or clavate; proboscis well-developed; labial palpus long, upcurved, reaching beyond the base of the antennae, first segment black, with long and bushy scales, second segment rough, with shorter pale yellow scales, third segment smooth, pale yellow, about ¼ as long as second segment; frons shiny grey, white laterally; vertex black, with some yellow hair-like scales.

Thorax: black dorsally, mixed with individual yellow hair-like scales; ventrally black, extensively covered by yellow scales; patagia black; metathorax black, with long yellow hair-like scales laterally.

Forewing: transparent; veins and costal margin black, yellow closer to the base; external transparent area with distinct lines of scales projecting from the outer margin into the space between the veins; discal spot well-developed and somewhat pointed; veins R4 and R5 emerging separately from R3 (Figs 9, 11, 13).

Hindwing: transparent, veins black, yellow close to the base, discal spot small but distinctly developed; fringe black, yellow in anal area; with a well-developed densely scaled fold along hindwing vein CuP (nomenclature following Eichlin & Duckworth 1988) (Figs 11, 13).

Legs: mainly black; foreleg with few yellow scales, fore tarsus dirty yellow; mid and hind femurs with some soft yellow scales along posterior margins; mid and hind tibiae with long hair-like scales, bright pale yellow in basal half; mid tarsus dirty yellow; hind tarsus black to dirty yellow; tibial spurs long and dirty yellow.

Abdomen: black; tergite 1 yellow; tergite 2 black, densely mixed with narrow yellow scales; anal tuft not developed.

Female genitalia ( Figs 15-17 View Figures 15-23 ). Papillae anales broad, apophyses short, apophyses anteriores shorter than the apophyses posteriors; with a ventral projection along the anterior margin of segment 8 (red arrow), ductus bursae long, straight and narrow, with a sclerotized ring near the ostium; corpus bursae pear-shaped, with distinct signum and some transverse folds in the distal part.

Male. Unknown.

Diagnosis. Superficially, this species is similar to species of Dasysphecia , in particular D. bombylina and D. bombyliformis . It also shows similarities with Glossosphecia species. However, the venation of the forewing (veins R4 and R5 emerging separately from R3, Figs 9, 11, 13) place this species in Toleria . Both Dasysphecia and Glossosphecia have forewing veins R4 and 5 stalked (Figs 10, 12, 14). Furthermore, species of Dasysphecia differ by their rudimentary proboscis, the lack of the scaled fold along hindwing vein CuP (Figs 11, 12) and the female genitalia (corpus bursae much smaller, without signum and without transverse folds, ductus bursae shorter and no ventral projections along the anterior margins of segment 8; only known for D. bombylina ). Toleria aritai spec. nov. differs from all other species of Toleria immediately by the distinct black body and yellow marking (brown with extensive yellow marks in all other species), the long scales on the mid and hind tibiae (short in all other Toleria ), the simple antennae (unipectinate in all other Toleria species), the well-developed labial palps (very small third segment in all other Toleria species) and the well-developed proboscis (rudimentary in all other Toleria species). Furthermore, other species of Toleria differ in their female genitalia (ventral projections along the anterior margins of segment 8 reduced, not linked to the base of the apophyses anteriores).

Distribution. Known only from northern Vietnam and Laos.

Bionomics. The host plant is unknown. All specimens were collected in the middle of May. The specimens from Cuc Phuong were found while flying slowly at the edge of subtropical rainforest at about 300 m elevation during sunny weather in the morning.

Etymology. The name of this new species is dedicated to our teacher and friend Prof. Yutaka Arita, who made great contributions to the research of the clearwing moths of Vietnam.