Humphaplotropis xiai, Zhi, Yong-Chao, Shi, Jian-Ping & Dai, Li, 2015

Zhi, Yong-Chao, Shi, Jian-Ping & Dai, Li, 2015, Two new species and key to four species of the genus Humphaplotropis from China (Orthoptera: Pamphagidae, Pamphaginae), Zootaxa 4032 (1), pp. 134-140 : 135

Humphaplotropis xiai sp. nov.

( Figs. 1–8 )

Male ( Figs. 1–5 ). Body large in size. Head shorter than length of pronotum. Face slightly oblique in profile, frontal ridge with longitudinal sulcus, both lateral carinae parallel, short, not reaching the clypeus. Antennae filiform, 22 segments, not reaching the posterior margin of pronotum. Eyes globose, vertical diameter 1.3 times horizontal diameter and 1.2 times subocular furrow. Pronotum lower hump along the median keel, the high upper than vertex occupied 1/3 of whole high of pronotum in lateral view; anterior margin acute angular in the middle, the apex reaching the hind margin of eyes, posterior margin acute angular in the middle, the apex reaching the middle point of first abdominal terga; median keel not cut by hind transverse sulcus; lateral keels developed. Prosternum collarlike with a thin edge, without tubercles or lobes. Tegmina shortened, oval, lateral, extending over the hind margin of first abdominal tergum, cover 1/2 tympanum. Middle tibia without teeth or tubercles. Hind femur robust, length as long as 4.0 times of maximum width, lower basal lobe longer than the upper one, upper keel smooth, the end of lower knee lobes rounded. Hind tibia with 9 spines on the inner side and 10 spines on outer side, external apical spine present. Upper margin of abdomen sawtooth entirely lateral view. Tympanum organ distinct, big and rotundity. Krauss’ organ washboard-like. Epiproct with longitudinal groove in the middle. Cercus conical, almost reaching the tip of epiproct. Subgenital plate triangle, apex acute. Epiphallus with 20 spikes, ancorae oblique inward distinctly, both posterior projections longer than median projection slightly.

Female ( Figs. 6–8 ). Body larger than male. Eyes small, vertical diameter 1.4 times horizontal diameter and shorter than subocular furrow. Tegmina shorter, reaching the middle of first abdominal tergum, cover 1/5 tympanum. Length of subgenital plate equal the maximum width.

Body yellowish-brown. Eyes brown. Antennae yellowish-brown. Hind femur yellowish-brown. Hind tibia and tarsus yellowish-brown. Abdomen yellowish-brown, without a light dark band on the both sides. Subgenital plate brown.

Measurement (in mm):

Length of body: ♂ 33.5–34.5, ♀39.2–43.5.

Length of pronotum: ♂13.0–14.3, ♀16.0–17.3.

Length of tegmina:♂3.5–4.1, ♀4.1–6.7.

Length of hind femur: ♂16.0–17.7, ♀18.5–19.5.

Holotype: ♂, paratypes 2 ♀ ♀, 1♂, Jiangsu, Chemo, China, collected by O. Piel, 21, May, 1935.

The new species Humphaplotropis xiai sp. nov. differs from all known species of the genus by the abdomen like sawtooth entirely in lateral view.

Etymology. The species is named in honor of Prof. Kailing Xia (1916–2013) on his centenary birth anniversary. He was our career mentor and an eminent insect taxonomist.

Figures

FIGURES 1 – 8. Humphaplotropis xiai sp. nov. 1. Body in side view ♂; 2. Head and pronotum in dorsal view ♂; 3. Head, in frontal view, ♂; 4. Epiphallus; 5. End of abdomen ♂ in dorsal view; 6. Body in side view, ♀;; 7. Krauss’ organ, ♀; 8. Subgenital plate, in ventral view, ♀.