taxonID	type	description	language	source
340A1223FFAED97BFF6BF942E6F3FE2C.taxon	discussion	Remarks. As discussed in the introduction, the male and female syntypes of Mesopodagrion tibetanum in BMNH represent two different species. In order to preserve current usage of the name we here designate the syntype male as lectotype. We have informed the curator of the Odonata collection, David Goodger, of this and have asked him to apply the following lectotype label to the male: " Mesopodagrion tibetanum McLachlan, 1896 / LECTOTYPE des. Xin Yu & Wenjun Bu, 2009. " The lectotype male is the type species for Mesopodagrion and its type locality is Moupin, now in Sichuan province, China. Curiously, Kimmins (1970) did not list this species in his type catalog. Fraser's (1933) account should apply to Mesopodagrion tibetanum but Fraser neglected to illustrate or discuss the unique bifurcate process although cerci and genital ligula were correctly figured. None of our specimens was consistent with the wing vein pattern illustrated by Fraser (1933), i. e. ‘ two rows of cells between Cuii and IA near their terminations’. His supposition that pale color on living male was blue was correct based on our field work. This species usually has pruinosity onS 9 – 10. Based on distinct differences between populations from Sichuan and Yunnan we have divided them into two subspecies as follows.	en	Yu, Xin, Bu, Wenjun (2009): A Revision of Mesopodagrion McLachlan, 1896 (Odonata: Zygoptera: Megapodagrionidae). Zootaxa 2202: 59-68, DOI: 10.5281/zenodo.189645
340A1223FFA9D97DFF6BFDB1E587F962.taxon	materials_examined	Material. 1 3, China, Moupin (now Baoxing, Sichuan), 189?,. (BMNH) [Holotype]; 2 3, 1 Ƥ, China, Sichuan, Wolong nature reserve, 2040 m, 24 - VII- 2005, Xin Yu leg. (NKUM).	en	Yu, Xin, Bu, Wenjun (2009): A Revision of Mesopodagrion McLachlan, 1896 (Odonata: Zygoptera: Megapodagrionidae). Zootaxa 2202: 59-68, DOI: 10.5281/zenodo.189645
340A1223FFA9D97DFF6BFDB1E587F962.taxon	description	Description. Male. Labium black; labrum, bases of mandibles, genae, anteclypeus and sides of frons pale; postclypeus, middle of frons, and top of head, including antennae, black, except for a pair of short pale stripes between lateral ocelli and bases of antennae; postocular spots absent, pale occipital bar present (Fig. 4 b); upper border of Rear of head pale, remainder black (Fig. 3 b). Prothorax black except for a pair of pale stripes on propleura and lower-most margin; synthorax black dorsally with wide pale antehumeral stripe about 1 / 2 width of mespisternum, sides of synthorax pale except for ventral border (Fig. 4 b); legs black, pale at base; wings hyaline; pterostigmata brown, braced, covering three cells. S 1 - 2 black dorsally, pale laterally; S 2 with black stripe laterally; S 3 - 6 black with pale basal spot and lateral stripe gradually narrowing distally; S 7 - 8 black except for pale basal spot and a pair of ventral narrow stripes (figs. 2 a, 2 b); S 9 black except for a pale latero-ventral spot; S 10 black except for pale postero-lateral spot (Fig. 5 d); bifurcate process longer than 1 / 2 of S 10, apex acute, outer margin inflectional, not smooth, hemline of bifurcate process about 1 / 2 width of S 10 (Figs. 5 c, 11), foot-like from latero-ventral view (Fig. 18); caudal appendages black, cerci almost twice as long as S 10, paraprocts vestigial (Figs. 5 d, 11); genital ligula simple, apical lobs bifurcated beyond the base (Fig. 2, d & e). Female. Similar as male by color pattern but slightly shorter in body length and more robust (Fig. 2 c). S 10 wholly black; ending before level of cerci, black except for pale tip (Fig. 6 a). Pale body color pattern on living female apple-green.	en	Yu, Xin, Bu, Wenjun (2009): A Revision of Mesopodagrion McLachlan, 1896 (Odonata: Zygoptera: Megapodagrionidae). Zootaxa 2202: 59-68, DOI: 10.5281/zenodo.189645
340A1223FFA9D97DFF6BFDB1E587F962.taxon	distribution	Distribution. Known from northwestern Burma and central Sichuan, China. The nominotypic subspecies occurs principally north of M. t. australe but south of M. yachowensis (Fig. 7). This subspecies is believed by Kalkman (2008) to occur in Kambaiti, NW Burma.	en	Yu, Xin, Bu, Wenjun (2009): A Revision of Mesopodagrion McLachlan, 1896 (Odonata: Zygoptera: Megapodagrionidae). Zootaxa 2202: 59-68, DOI: 10.5281/zenodo.189645
340A1223FFA9D970FF6BF941E6F9FE76.taxon	materials_examined	Materials. Holotype: 3, China, Yunnan, Yuanjiang, Nanxi, 2100 m, 20 - VII- 2006, Xin Yu leg. (NKUM); Paratypes: 1 3, China, Yunnan, Mt. Ailao, Xujiaba, 8 - V- 1984, Leyi Zheng leg. (NKUM); 1 3, 2 Ƥ, China, Yunnan, Dali, 20 - VI- 2005, Benyong Mao leg. (NKUM); 3 3, China, Yunnan, Lijiang, Mt. Yulong, 15 - VI- 1998, Wenjun Bu leg. (NKUM); 1 3, China, Yunnan, Lijiang, Mt. Yulong, 2700 m, 14 - VIII- 1979, Zuopei Ling leg. (NKUM); 2 3, 1 Ƥ, China, Sichuan, Luding, Mt. Gongga, 16 - VI- 1993, Yang Bing leg. (CUMZ); 3 3, 1 Ƥ, China, Yunnan, 1918, G. Forrest leg. (BMNH); 2 Ƥs, Upper Burma, Seinghku Valley, 5000 ’, 17 - V- 1926, Ward leg. (BMNH); 1 3, China, Yunnan, 1918, G. Forrest leg. (CUMZ).	en	Yu, Xin, Bu, Wenjun (2009): A Revision of Mesopodagrion McLachlan, 1896 (Odonata: Zygoptera: Megapodagrionidae). Zootaxa 2202: 59-68, DOI: 10.5281/zenodo.189645
340A1223FFA9D970FF6BF941E6F9FE76.taxon	etymology	Etymology. The subspecific name refers to the more southerly distribution for this subspecies compared to that of the nominotypical subspecies.	en	Yu, Xin, Bu, Wenjun (2009): A Revision of Mesopodagrion McLachlan, 1896 (Odonata: Zygoptera: Megapodagrionidae). Zootaxa 2202: 59-68, DOI: 10.5281/zenodo.189645
340A1223FFA9D970FF6BF941E6F9FE76.taxon	description	Description. Male. Similar to M. t. tibetanum, but differs as follows: pale occipital bar absent (Fig. 4 c, d), Rear of head entirely pale (Fig. 3 c); antehumeral stripe narrow (about 1 / 3 width of mesepimeron), complete, sometimes interrupted near upper end (Fig. 4 c, d); S 10 and appendages black, latero-ventrally pale (Fig. 5 f, h); bifurcate process almost as long as 1 / 2 width of S 10, outer margin arched, smooth, black or sometimes pale, hemline of bifurcate process more than 1 / 3 width of S 10, but not to 1 / 2 (Figs. 5 c, d, 12 – 14). Female. Similar to male by color pattern but slightly shorter in body length and more robust. Antehumeral stripes broader than in male; S 10 pale laterally; ovipositor pale dorsally beyond level of S 10 (Fig. 6 c).	en	Yu, Xin, Bu, Wenjun (2009): A Revision of Mesopodagrion McLachlan, 1896 (Odonata: Zygoptera: Megapodagrionidae). Zootaxa 2202: 59-68, DOI: 10.5281/zenodo.189645
340A1223FFA9D970FF6BF941E6F9FE76.taxon	distribution	Distribution. A more southerly species than M. yachowensis occurring in mountainous areas southern China from central Sichuan (apparently sympatric with M. yachowensis there), south through Yunan province and into northern Burma. This subspecies is believed by V. Kalkman (pers. com.) to occur in Kangding, Sichuan and Deqen, Yunnan, China. This species occurs at higher elevations (> 3000 m) compared to M. yachowensis (Fig. 7).	en	Yu, Xin, Bu, Wenjun (2009): A Revision of Mesopodagrion McLachlan, 1896 (Odonata: Zygoptera: Megapodagrionidae). Zootaxa 2202: 59-68, DOI: 10.5281/zenodo.189645
340A1223FFA4D970FF6BFE5DE517F8A7.taxon	materials_examined	Material. 1 3, China, Gansu, Kangxian, Qinghe forestry centre, 1400 m, 14 - VII- 1998, Shuyong Wang leg., IOZ (E) 830140 (IZAS); 1 3, China, Henan, Songxian, Mt. Baiyun, 18 - VII- 2002, Xiujuan Yang leg. (CHU); 1 Ƥ, China, Henan, Huixian, Baligou, 13 - VII- 2002, Xiujuan Yang leg. (CHU); 2 3, 19 - VII- 2002, ditto.; 1 3, China, Shaanxi, Liuba, Miaotaizi, 1400 m, 22 - VII- 1998, Guangzhi Yu leg., IOZ (E) 830116 (IZAS); 1 Ƥ, same data., 1600 m, 21 - VII- 1998, Jian Yao leg., IOZ (E) 830139 (IZAS); 1 3, China, Shaanxi, Ningshan, Huoditang, 1820 m, 28 - VII- 1998, Jun Chen leg., IOZ (E) 830120 (IZAS); 1 3, China, Shaanxi, Fengxian, Qinling railway station, 1500 m, 27 - VII- 1994, Jianzhen Dong leg. (NKUM); 1 3, China, South Shensi, 16 - VI- 1936, E. Sueson leg. (BMNH); 1 Ƥ, China, Sichuan, Siao-Lou, 189? (BMNH) [paratype of M. tibetanum]; 1 3, 1 Ƥ, China, South Shensi, 16 - VI- 1936, E. Sueson leg. (CUMZ).	en	Yu, Xin, Bu, Wenjun (2009): A Revision of Mesopodagrion McLachlan, 1896 (Odonata: Zygoptera: Megapodagrionidae). Zootaxa 2202: 59-68, DOI: 10.5281/zenodo.189645
340A1223FFA4D970FF6BFE5DE517F8A7.taxon	description	Description. Male. As in M. tibetanum by color pattern though larger. Differs from M. t. tibetanum as follows: Rear of head entirely black (Fig. 3 a). Antehumeral stripe excavated at upper fourth and with small anteriorly directed offshoot (Fig. 4 a). S 10 pale dorsally (Fig. 5 a); basal half of cerci distinctly dilated, almost twice as wide as abruptly narrowed distal half (Figs. 5 a, 8 – 10); bifurcate process short, not longer than 1 / 2 width of S 10, outer margin concave, hemline of bifurcate process less than 1 / 3 width of S 10 (Figs. 8 – 10). Apical lobs of genital ligula bifurcate at base (Fig. 1, d & e). Female. Similar to male in color pattern but slightly shorter in body length and more robust (Fig. 1 c). Antehumeral stripes broader than in male. Terminus of abdomen similar to female of M. t. tibetanum except ovipositor shorter, ending at about level of end of S 10 (Fig. 6 a).	en	Yu, Xin, Bu, Wenjun (2009): A Revision of Mesopodagrion McLachlan, 1896 (Odonata: Zygoptera: Megapodagrionidae). Zootaxa 2202: 59-68, DOI: 10.5281/zenodo.189645
340A1223FFA4D970FF6BFE5DE517F8A7.taxon	discussion	Remarks. Acknowledging the inaccuracy of illustrations of M. tibetanum by Fraser (1933), Chao (1987) later synonymized his own species with M. tibetanum. We doubt that Chao had seen the syntype male of M. tibetanum or had a specimen of true M. tibetanum, otherwise he would seen the distinct differences between these two species. We concur with Kalkman (2008) in treating M. yachowensis as a separate species.	en	Yu, Xin, Bu, Wenjun (2009): A Revision of Mesopodagrion McLachlan, 1896 (Odonata: Zygoptera: Megapodagrionidae). Zootaxa 2202: 59-68, DOI: 10.5281/zenodo.189645
340A1223FFA4D970FF6BFE5DE517F8A7.taxon	distribution	Distribution. A more northerly species than M. tibetanum species occurring in mountainous areas along a largely east-west arc from central Sichuan (apparently sympatric with M. tibetanum there), Gansu north to Henan and east to Zhejiang provinces. This species occurs at lower elevations from about 1400 m (Tianmu), to about 3000 m (Qinling, Fig. 7). We have been unable, despite intensive search, to locate Siao-lou [Xiaolou] for McLachlan's female in Sichuan Province.	en	Yu, Xin, Bu, Wenjun (2009): A Revision of Mesopodagrion McLachlan, 1896 (Odonata: Zygoptera: Megapodagrionidae). Zootaxa 2202: 59-68, DOI: 10.5281/zenodo.189645
