Neohirasea hilli vientnamensis, Ho, 2018

Ho, Wai-Chun George, 2018, The genus Neohirasea Rehn (Phasmatodea: Diapheromeridae: Necrosciinae) from Vietnam, Zoological Systematics 43 (1), pp. 37-51 : 46-48

Neohirasea hilli vientnamensis subsp. nov. ( Figs 30–32 , 62, 64 )

Diagnosis. This new subspecies is similar to the nominate Neohirasea hilli hilli sp. nov. & subsp. nov., but can be diagnosed by the third antennal segment longer than combined length of scapus and pedicellus, presence of a medial spine on mesopleurae, longer legs, lacking wavy elevations on femora and posteroventral and anteroventral carinae of profemora with two small serrations near apices.

Description. Male. Head as in nominate race. Compound eyes oval and small. Antennae filiform and long, surpassing apices of protarsi, sparsely covered with short bristles; scapus flattened basally, 2 times as long as pedicellus; third segment longer than combined length of scapus and pedicellus. Thorax rough, with sparse granules and short wrinkles. Pronotum rectangular, longer than wide, anterior margin weakly incurved, posterior margin truncate; transverse and longitudinal sulci crossing at middle area, with a pair of straight spines on anterior margin, also with another pair of comparatively smaller spines placed before transverse sulcus. Mesonotum rough, more than 3 times as long as pronotum, gently expanded posteriorly in second half; median longitudinal carina distinctly elevated, with spines anteriorly, pre-medially, post-medially and posteriorly. Mesopleurae with a short tubercle-like spine near posterior area and a short tubercle-like supra-coxal tubercle. Metanotum with paired spines near middle area, longer than median segment. Metapleurae with a tubercle-like medial spine and a tubercle-like supra-coxal spine. Median segment square, unarmed. Second tergum with paired spines posteriorly. Eighth tergum as long as ninth tergum. Anal segment slightly longer than ninth tergum, longer than wide, with a small emargination on posterior margin. Poculum cup-shaped, posterior margin rounded and surpassing anterior margin of anal segment. Cerci cylindrical, apices rounded and surpassing end of anal segment. Vomer with elongate apical part; apical part parallel-sided, posterior margin truncate with apically pointed serrations. Legs slender and long, sparsely covered with short bristles, unarmed. All femora thicker than corresponding tibiae, lacking wavy elevation. Profemora curved basally, posteroventral and anteroventral carinae with 2 small serrations near apices. Posteroventral and anteroventral carinae of mesofemora and metafemora with 2 small serrations near apices.

Female. Unknown.

Measurements. Length. Body, ♂ 35.0 mm; antennae, ♂ 30.0 mm; head, ♂ 3.0 mm; pronotum, ♂ 2.5 mm; mesonotum, 8.0 mm; metanotum, ♂ 2.5 mm; median segment, ♂ 2.0 mm; profemora, ♂ 11.5 mm; mesofemora, ♂ 9.0 mm; metafemur, ♂ 13.0 mm; protibiae, ♂ 13.5 mm; mesotibiae, ♂ 11.5 mm; metatibia, ♂ 17.0 mm.

Material examined. Holotype ♂, Vietnam, Thua Thien Hue , Bachma Mountain, 18 September 2016, He Li ( HKES).

Distribution. Vietnam.

Etymology. The specific epithet of this new subspecies is derived from the type locality, Vietnam.

Figures

Figures 1–37. Neohirasea spp. 1–5. N. biserrata sp. nov. 6–10. N. bispina bispina sp. nov. & subsp. nov. 11–12. N. bispina babeensis subsp. nov. 13–17. N. catbaensis sp. nov. 18–23. N. coomani sp. nov. 24–27. N. hilli hilli sp. nov. & subsp. nov. 28–29. N. hilli nahangensis subsp. nov. 30–32. N. hilli vietnamensis subsp. nov. 33–37. N. maerens pseudomaerens subsp. nov. 1, 6, 11, 13, 22, 24, 28, 30, 33. Male end of abdomen, lateral view. 2, 7, 12, 15, 23, 25, 29, 32, 34. Male end of abdomen, dorsal view. 3, 8, 14, 31, 35. Male vomer, ventral view. 4, 9, 16, 18, 26, 36. Female end of abdomen, lateral view. 5, 10, 17, 19, 27, 37. Female end of abdomen, dorsal view. 20. Female end of abdomen, ventral view. 21. Female mesonotum, dorsal view. Scale bars: 1–2, 4–7, 9–13, 15–30, 32– 34=5mm; 3, 8, 14, 31, 35=1mm.

Figures 57–68. Neohirasea spp. 57–60. N. hilli hilli sp. nov. & subsp. nov. 61, 63. N. hilli nahangensis subsp. nov. 62, 64. N. hilli vietnamensis subsp. nov. 65–68. N. maerens pseudomaerens subsp. nov. 57, 61–62, 65. Male habitus. 58, 66. Female habitus. 59, 63– 64, 67. Male head and thorax, dorsolateral view. 60, 68. Female head and thorax, dorsolateral view. Scale bars=5mm.