Marmessoidea liuxingyuei, Ho, 2018

Ho, Wai-Chun George, 2018, New taxa of Necrosciinae from Vietnam (Phasmatodea: Diapheromeridae), Zoological Systematics 43 (2), pp. 178-189 : 187

Marmessoidea liuxingyuei sp. nov. ( Figs 17–18 , 33 )

Diagnosis. This new species is similar to M. alata sp. nov., but can be easily diagnosed by much slender body, greenish brown wings and banded legs.

Description. Male. Body slender. General colour of body greenish brown. Legs generally green with black bands. Head lacking granulation, oval, longer than pronotum. Vertex and occiput flat, with distinct median longitudinal furrow, posterior margin with 6 small swellings. Compound eyes rounded, about 2 times as long as genae. Antennae very long and filiform, longer than body length, covered with dense short bristles; scapus more or less flattened, longer than pedicellus; third segment as long as combined length of scapus and pedicellus. Thorax lacking granulation. Pronotum rectangular, longer than wide, anterior margin weakly curved inwards, posterior margins rounded, longitudinal and transverse sulci crossing before middle area. Mesonotum slender and elongate, parallel-sided, with distinct median longitudinal line. Abdomen smooth. Eighth tergum as long as ninth tergum. Anal segment shorter than ninth tergum, with a small emargination on posterior margin. Poculum tapering posteriorly, posterior margin pointed and almost reaching posterior margin of anal segment. Cerci cylindrical, apices obtuse and gently curved inwards. Legs unarmed, very slender and long, with short bristles. All femora as long as corresponding tibiae. Profemora incurved basally. Tegmina greenish brown, oval, posterior margin subtruncate. Alae greenish brown, long and well-developed, posterior apices reaching sixth abdominal tergum.

Female. Unknown.

Measurements. Length. Body, ♂ 60.0 mm; antennae, ♂ 80.0 mm; head, ♂ 3.0 mm; pronotum, ♂ 2.5 mm; mesonotum, ♂ 12.0 mm; metanotum (including median segment), ♂ 8.0 mm; profemora, ♂ 20.0 mm; mesofemora, ♂ 13.0 mm; metafemora, ♂ 19.0mm; protibiae, ♂ 20.0 mm; mesotibiae, ♂ 13.0 mm; metatibiae, ♂ 19.0mm; tegmina, ♂ 5.0 mm; alae, ♂ 30.0 mm.

Material examined. Holotype ♂, Vietnam, Dong Nai, Tan Phu, Cat Tien, 21 September 2011, Liu Xingyue ( CAU).

Distribution. Vietnam.

Etymology. It is named in honour of Dr. Liu Xingyue ( China) for his discovery of this new species.

Figures

Figures 1–23. Necrosciinae spp. 1–4. Asceles hirsutus sp. nov. 5–8. A. maculatus sp. nov. 9–12. Lamachodes brocki sp. nov. 13– 16. Marmessoidea alata alata sp. nov. & subsp. nov. 17–18. M. liuxingyuei sp. nov. 19–23. Neooxyartes zomproi gen. nov. & sp. nov. 1, 5, 9, 15, 19. Female end of abdomen, lateral view. 2, 6, 10, 16, 20. Female end of abdomen, dorsal view. 3, 7, 11, 13, 17, 21. Male end of abdomen, lateral view. 4, 8, 12, 14, 18, 22. Male end of abdomen, dorsal view. 23. Vomer, ventral view. Scale bars: 1–22=5mm; 23=1mm.

Figures 30–35. Necrosciinae spp., habitus. 30–31. Marmessoidea alata alata sp. nov. & subsp. nov. 32. M. alata elongata subsp. nov. 33. M. liuxingyuei sp. nov. 34–35. Neooxyartes zomproi gen. nov. & sp. nov. 30, 32–33, 35. Male. 31, 34. Female. Scale bars= 5mm.