Eotmethis shizuishanensis, Li, Xin-Jiang, Shi, Jian-Ping & Dang, Yan, 2016

Li, Xin-Jiang, Shi, Jian-Ping & Dang, Yan, 2016, A review of the genus Eotmethis (Orthoptera, Acridoidea, Pamphagidae) with two new species and key to known species of the genus from China, Zootaxa 4144 (1), pp. 138-144 : 140-143

Eotmethis shizuishanensis sp. nov.

( Figs. 7–13 )

Holotype: 1♂, paratypes 1♂, 1♀, Shizuishan, Ningxia, 2003-VII-18, collected by Wang Wen-Qiang and Li Xin- Jiang.

Male Body medium-sized, thickset. Vertex short and wide, the width between eyes about 2.2 times the diameter of eye; lateral aspects of vertex edged by distinct carina, reaching the middle of eyes. Fastigial furrow present. Vertex depressed, with granular tubercles. Frontal ridge apparent, between the bases of the antennae projecting forward, contracted slightly under the median ocellus, widened gently downwards, widen distinctly near the base of labrum. Lateral facial carinae invisible. Eyes elliptic, vertical diameter 1.2 times horizontal diameter and shorter than the length of subocular groove distinctly. Antennae shorter, 20 segments, extending over the middle of pronotum, length of the middle segment 2.0 times as width. Pronotum rough, with short subuliform projection, anterior and posterior margin angled protruding; median carina elevated into lamellate, strongly incised by the hind transverse sulcus; metazona equal to the prozona in length, the median carina of prozona cut by two transverse sulci, in metazona the carina arc-like raised. Prosternum with a strong lamellate process on the anterior margin, divided into two acute-angle-lobes. Interspace of mesosternum lateral lobes trapezoid, wider, the width of narrowest part larger than width of broadest part of lateral lobes distinctly. Tegmina longer, reaching to the hind margin of 4th abdominal tergite, R vein without branch, M vein with one branch, Cu vein without branch. Hind femur wide and compressed, length 3.5 times of maximum width; median carina of hind femur on the upper side serrated. Hind tibia with 9 spines on the inner side and 10 spines on the outer side (including apical spine). Arolium between the claws of tarsus larger, its apex reaching the middle of claws. Tympanum organ developed, tympanal aperture expanded, tympanic flap larger. Krauss’s organ near trapezoid, with thinly rugose on surface. Abdomen dorsally with a row of tubercles in the middle. Epiproct near peltate, with longitudinal groove in middle, its both sides with carinae. Cercus long conical, not reaching the end of epiproct. Subgenital plate short, apex angle-like.

Female Body larger and thick. Vertex extremely wider, the width between the eyes about 2 times eye. Tegmina lobi-form, separated widely dorsum, the apex extending over the posterior margin of the second abdominal tergite, distinctly longer than the length of metazona. Cercus short conical. Subgenital plate projecting into an acute angle in the middle of posterior margin. Ovipositor valve very short, curve, apex acute.

Coloration. Body brown. Pronotum with two broad pale bands near the anterior margin. Dark stripe of hind wing near outer margin. Hind femur blue on inner side, upper side with two dark bands, lower knee lobe yellow on inner side. Inner side of hind tibia in the base yellowish brown and the apical part red, the remaining part dark blue. Hind tarsus yellowish brown.

Measurement (in mm). Length of body: ♂ 25.6–26.3; ♀ 33.1. Length of tegmina: ♂ 8.7–10.7; ♀ 9.9. Length of hind femur: ♂ 13.0–13.5; ♀ 16.8.

Diagnosis. The new species is similar to Eotmethis xiai Ye, Shi & Zhi, 2015 . The major differences are listed in Table 1 .

Etymology. The specific epithet is named for Shizuishan, the type locality.

1. Hind tibia not all red on inner side.

- Hind tibia all red on inner side.......................................................................... 14 2. Hind tibia not all blue on inner side.

- Hind tibia all blue on inner side.......................................... 1. E. cyanitibialis Li, Wang & Yin, 2013

Li, Wang & Yin. 2013. Acta Zootaxonomica Sin. 38(3):535.

Type locality: China, Ningxia, Shizuishan.

Location of type specimen: holotype male, College of Life Sciences , Hebei University, Baoding, China. 3. Lower area of hind femur red on inner side.

- Lower area of hind femur dark-blue or blue-black on inner side................................................. 12 4. Distal third of lower area of hind femur red on inner side only.

- Lower area of hind femur all red or with a red line on inner side................................................. 6 5. Prozona of pronotum longer than metazona, apex of subgenital plate pointed in male, tarsus of hind leg not red............

........................................................................... 2. E. nasutus Bey-Bienko, 1948

Bey-Bienko. 1948. Entomologicheskoe Obozrenie 30 (1-2):11.

Xia, et al. 1994. Fauna Sinica Insecta, Vol. 4, 221-222.

Type locality: China, Gansu, Bai-dun-tshzi.

Location of type specimen: holotype male, ZIN St. Petersburg.

- Prozona of pronotum equal metazoan in length, apex of subgenital plate not pointed in male, tarsus of hind leg red.........

...................................................................... 3. E. gansuensis Yin, Li & Yin, 2015

Yin, Li & Yin. 2015. Zoological Systematics 40(1):60.

Type locality: China, Gansu, Jingtai.

Location of type specimen: holotype male, College of Life Sciences , Hebei University, Baoding, China. 6. Hind femur with two dark bands on outer side.

- Hind femur without two dark bands on outer side................................ 4. E. unicolor Yin, Li & Yin, 2011

Yin, Li & Yin. 2011. Acta Zootaxonomica Sin. 36(3):533.

Type locality: China, Gansu, Jingtai.

Location of type specimen: holotype male, College of Life Sciences , Hebei University, Baoding, China. 7. Tegmina in male longer, reaching the 10th abdominal tergite.

- Tegmina in male shorter, reaching to the 4th or 6th abdominal tergite only......................................... 9 8. The width between two eyes as long as 1.2 times the diameter of eye, hind tarsus yellowish-brown, apex of subgenital plate not

pointed in male............................................................. 5. E. rufemarginis Zheng, 1985

Zheng. 1985. J. Shaanxi Normal University Nat. Sci. Ed. 2: 84.

Xia, et al. 1994. Fauna Sinica Insecta, Vol. 4, 222-225.

Type locality: China, Shaanxi, Yulin.

Location of type specimen: holotype male, Shaanxi Normal University, Xi’an, China. - The width between two eyes as long as 1.8 times the diameter of eye, hind tarsus red, apex of subgenital plate pointed in male.

................................................................. 6. E. daqingshanensis Yin, Li & Yin, 2015

Yin, Li & Yin. 2015. Zoological Systematics 40(1):58.

Type locality: China, Inner Mongolia, Guyang , Daiqingshan.

Location of type specimen: holotype male, College of Life Sciences , Hebei University, Baoding, China. 9. Hind tibia blue in the middle.

- Hind tibia purple in the middle...................................................... 7. E. indigotibialis sp. nov 10. Metazona equal to prozona.

- Metazona longer than prozona................................................ 8. E. recipennis Xi & Zheng, 1986

Xi & Zheng. 1986. Acta Entomol. Sin. 29(2):193.

Xia et al. 1994. Fauna Sinica Insecta, Vol. 4, 224–225.

Type locality: China, Inner Mongolia, Urad Zhonghou Lianheqi

Location of type specimen: holotype male, Shaanxi Normal University, Xi’an, China. 11. Lower knee-lobe of hind femur red. Tegmina in male reaching to epiproct................. 9. E xiai Ye, Shi & Zhi, 2015 Ye, Shi & Zhi, 2015 Zootaxa , 4032(1): 141–146.

Type locality: China, Gansu, Gulang.

Location of type specimen: holotype male, College of Life Sciences, Hebei University, Baoding, China. - Lower knee-lobe of hind femur yellow, not red. Tegmina in male reaching to 4th abdominal tergite......................

........................................................................... 10. E. shizuishanensis sp. nov. 12. Tegmina in male not reaching the epiproct.

- Tegmina in male reaching the epiproct....................................... 11. E. jingtaiennis Xi & Zheng, 1984

Xi & Zheng. 1984. Entomotaxonomia 6(1):37.

Xia, et al. 1994. Fauna Sinica Insecta, Vol. 4, 225–226.

Type locality: China, Gansu, Jingtai.

Location of type specimen: holotype male, Institute of Zoology, Shaanxi Normal University, Xi’an, China. 13. Width of vertex between eyes equal diameter of eye in female.-.................. 12. E. holanensis Zheng & Gow, 1981

Zheng & Gow. 1981. Acta Entomol. Sin. 24(1):72.

Xia, et al. 1994. Fauna Sinica Insecta, Vol. 4, 227–228.

Type locality: China, Ningxia, Shizuishan.

Location of type specimen: holotype female, Shaanxi Normal University, Xi’an, China. - Width of vertex between eyes 2 times diameter of eye in female................ 13. E. platyverticus Ye, Shi & Zhi, 2015

Ye, Shi & Zhi, 2015 Zootaxa, 4032(1): 141–146.

Type locality: China, Ningxia, Shizuishan.

Location of type specimen: holotype male, College of Life Sciences, Hebei University, Baoding, China. 14. Hind femur red at apex on inner side, ventral side red.............................. 14. E. tientsuensis (Chang, 1978)

Zheng & Fu. 1989. J. Shaanxi Normal University Nat. Sci. Ed. 17(1) Sum No 30:64–69.

Chang, Wang & Kan. 1978. Acta Entomol. Sin. 21(3):322. ( Filchnerella tientsuensis ).

Xia, et al. 1994. Fauna Sinica Insecta, Vol. 4, 226–227 (syn. Eotmethis rufitibialis Xi & Zheng, 1984 ).

Xi & Zheng. 1984. Entomotaxonomia 6(1):38. ( Eotmethis rufitibialis ).

Type locality: China, Gansu, Tientsu.

Location of type specimen: holotype female, Shaanxi Normal University, Xi’an, China. - Hind femur yellow at apex on inner side, ventral side yellow.................... 15. E. ningxiaensis Zheng & Fu, 1989

Zheng & Fu. 1989. J. Shaanxi Normal University Nat. Sci. Ed. 17(1) Sum No 30:66, 69.

Type locality: China, Ningxia, Shitsishan.

Location of type specimen: holotype female, Shaanxi Normal University, Xi’an , China.

Figures

FIGURES 7 – 13. Eotmethis shizuishanensis sp. nov. 7. body lateral view ♂; 8. epiphallus; 9. tegmen ♂; 10. head frontal view ♂; 11. head and pronotum dorsal view ♂; 12. end of abdomen lateral view ♂; 13. body, lateral view ♀.

Tables

TABLE 1. Comparison of the major morphological characters between Eotmethis shizuishanensis sp. nov. and E. xiai Ye, Shi & Zhi, 2015.

Character	Eotmethis shizuishanensis sp. nov.	E. xiai Ye, Shi & Zhi, 2015
Tegmina of male	R vein without branch, M vein with one branch, Cu vein without branch	R vein with two branches, M vein without branch, Cu vein with one branch
Apex of tegmina in male	Reaching to 4th abdominal tergite	Reaching to epiproct
Hind femur	Lower knee-lobe yellow on inner side	Lower knee-lobe red on inner side
Key to known species	of genus Eotmethis Bei-Bienko, 1948