Diestramima napoensis Zhu & Shi, 2025

Zhu, Qidi, Xu, Hao, Yang, Ruigang & Shi, Fuming, 2025, Notes on the genus Diestramima Storozhenko, 1990 (Orthoptera, Rhaphidophoridae) with description of three new species from China, ZooKeys 1231, pp. 119-132 : 119-132

Diestramima napoensis Zhu & Shi sp. nov.

Figs 3 C, D , 4 , 5

Material examined.

Holotype: China • ♂, Guangxi Zhuang Autonomous Region, Napo County, Defu village , 23.2943 ° N, 105.8023 ° E, alt. 1330 m, 13. VIII. 2024, Hao Xu leg. Paratypes: China • 4 ♂ 4 ♀, Guangxi Zhuang Autonomous Region, Napo County, Defu village , 23.2943 ° N, 105.8023 ° E, alt. 1330 m, 11–14. VIII. 2024, Hao Xu leg.

Other material.

China – Guangxi Zhuang Autonomous Region • 7 ♂ 2 ♀, Napo County, Defu village , 23.2943 ° N, 105.8023 ° E, alt. 1330 m, 11–14. VIII. 2024, Hao Xu leg. ; • 5 ♂ 6 ♀, Napo County, Baisheng Town , 23.0863 ° N, 105.5711 ° E, alt. 1310 m, 15. VIII. 2024, Hao Xu leg.

Diagnosis.

The new species is similar to Diestramima austrosinensis Gorochov, 1998 , but it can be easily distinguished by the shape of the seventh abdominal tergite and the paraproct of male. Posteromedian process of the seventh abdominal tergite of male long, basal 1 / 3 curved backwards and downwards, apical area divided into 2 branches, each with 2 small processes. Male paraproct platelike, pointing upwards, apex rounded.

Description.

Male. Body medium-sized. Fastigium verticis with 2 conical tubercles, apices drawn together, obtusely rounded, pointing forwards. Eyes ovoid, protruding forwards; median ocellus oval, located between antennal sockets, lateral ocelli nearly circular, situated on lateral surface of basal rostral tubercles. Apical segment of maxillary palp obviously longer than subapical one, apex inflated, globular. Pronotum broad, anterior margin of disc straight, posterior margin arcuate; lateral lobe longer than high, ventral margin arc-shaped. Mesonotum and metanotum short, posterior margin of mesonotum arcuate, posterior margin of metanotum straight. Fore coxa with 1 small spine; femur unarmed on ventral surface, internal genicular lobe with 1 small spine, external genicular lobe with 1 long spine; tibia with 2 inner spines and 2 outer spines on ventral surface, apex with 1 outer spine on dorsal surface and 1 pair of spines on ventral surface, between the paired ventral spines with 1 small spine. Middle femur unarmed on ventral surface, internal and external genicular lobes with 1 long spine respectively; tibia with 2 inner spines and 2 outer spines on ventral surface, apex with 1 pair of dorsal spines and 1 pair of ventral spines, between the paired ventral spines with 1 small spine. Hind femur with 5–7 inner spines on ventral surface, internal genicular lobe with 1 small spine, external genicular lobe unarmed; tibia with 27–33 inner spines and 33 or 34 outer spines on dorsal surface, subapex with 1 pair of dorsal spines, apex with 1 pair of dorsal spines and 2 pairs of ventral spines, intero-dorsal spine slightly shorter than hind basitarsus; hind basitarsus with 2 dorsal spines. Posterior margin of sixth abdominal tergite straight. Posteromedian process of seventh abdominal tergite long, basal 1 / 3 curved backwards and downwards, apical area divided into 2 branches, each with 2 small processes. Paraproct platelike, pointing upwards and backwards, apex rounded. Cercus narrow, conical, apex acute. Genitalia with 8 membranous lobes, dorso-median lobe narrower, apical area with a notch, dorso-lateral lobes slightly longer than dorso-median lobe, ventro-lateral lobes divided into 2 lobes, ventro-median lobe broad, nearly equal to dorso-median lobe, apical area with a notch. Subgenital plate transverse and broad, posterior margin truncated. Female. Appearance is similar to male. Posterior margin of seventh abdominal tergite with a small process. Ovipositor narrow and long, slightly curved upwards, dorsal margin smooth, apical areas of ventral margin denticulate. Subgenital plate triangular, apex rounded.

Coloration. Body light brown. Ocelli yellow. Face with 4 longitudinal black stripes. All femora with ring-like brown stripes, basal half of hind femur with penniform yellowish-brown stripes.

Measurements (mm). Body length: ♂ 19.32–22.56, ♀ 20.50–21.82; length of pronotum: ♂ 5.80–5.90, ♀ 5.78–6.08; length of fore femur: ♂ 13.80–14.72, ♀ 13.22–14.16; length of hind femur: ♂ 26.88–29.78, ♀ 27.34–28.04; length of hind tibia: ♂ 29.24–31.36, ♀ 28.54–30.24; length of hind basitarsus: ♂ 5.00–5.90, ♀ 5.70–5.90; length of ovipositor: 18.64–18.96.

Etymology.

The name of the new species derives from the type locality.

Distribution.

Guangxi (Napo County).

Figures

Figure 3. Male genitalia of Diestramima spp. A, C dorsal view B, D ventral view A, B Diestramima longzhouensis Zhu & Shi, sp. nov. C, D Diestramima napoensis Zhu & Shi, sp. nov.

Figure 4. Diestramima napoensis Zhu & Shi, sp. nov. A – I, L ♂ A – C head and pronotum A frontal view B lateral view C dorsal view D – I apex of abdomen D lateral view E dorsal view F dorso-apical view G, H apical view I ventral view L hind tarsus in lateral view J, K ♀ J subgenital plate K ovipositor in lateral view.

Figure 5. Habitats of Diestramima napoensis Zhu & Shi, sp. nov. Photograph by Qianle Lu.