Pachyprotasis xibei Zhong & Wei, 2013

Zhong, Yihai, Li, Zejian & Wei, Meicai, 2015, Six new Chinese species of the Pachyprotasis melanosoma group (Hymenoptera: Tenthredinidae) with a key to the species, Zootaxa 3914 (1), pp. 1-45 : 15

Pachyprotasis xibei Zhong & Wei, 2013

( Figs. 36, 37 , 70, 71 , 88 , 120, 124 , 127 )

Pachyprotasis xibei Zhong & Wei, 2013: 849 , 852–854, fig. 852. ♂, type locality: Mt. Liupan, Fengtai (35°23′N, 106°18′E, alt. 1945 m), Ningxia, China.

Distribution. China (Ningxia and Qinghai) ( Fig. 127 ).

Material examined. Holotype: Ningxia: ♂, Fengtai, Mt. Liupan (35°23′N, 106°18′E, 1945 m), 24.05.2008, Fei Liu leg.; Paratypes: 3 ♂, Fengtai, Mt. Liupan (35°23′N, 106°18′E, 2133– 2050 m), 26– 28.05.2008, Fei Liu leg.; Qinghai: 1 ♂, Xiewuzhen, Chengduo (33°07′ N, 97°2′ E, 3800 m), 26.06.2009, Zejian Li leg.

Discussion. This species is similar to the male of P. maculopleurita and may be distinguished as follows ( P. maculopleurita in parentheses): body length 9.5 mm (body length 5.5–6.0 mm); labrum and clypeus completely white (labrum and clypeus black); mesepisternum medially white (mesepisternum medially black); all sterna completely white (all sterna only posteriorly with white). It is also similar to P. fulvocoxis and may be distinguished as follows ( P. fulvocoxis in parentheses): median mesoscutal lobe with lateral part anteriorly white, apex without white (median mesoscutal lobe with lateral part completely black, apex with a white arrow-shaped spot); mesocutellum black, medially with two separate white spots, mesoscutellar appendage and metascutellum completely black (mesocutellum, mesoscutellar appendage and metascutellum completely white); lower part of mesepisternum with two large separate white spots, medial of mesepisternum white (mesepisternum completely black); laterally deflexed parts of all terga and all sterna completely white (laterally deflexed parts of terga with outer margins white, all sterna posteriorly with white); hind coxa without brown (hind coxa dorsally with brown). Except for the gonoforceps and penis valve, reliable morphological differences between these three species were not found.

Figures

FIGURE 127. Geographical distribution of species of P. melanosom a group in China (3).

FIGURES 34 – 37. Dorsal and lateral view: 34 – 35. P. fulvocoxis, male, holotype; 36 – 37. P. xibei, male, holotype.

FIGURES 66 – 71. Head in dorsal view and face in front view: 66. P. nigroclypeata, female; 67. P. nitididorsata, female; 68. P. pailongensis, female; 69. P. qilianica, female; 70. P. xibei, male, head in dorsal view; 71. xibei, male, face in front view.

FIGURES 84 – 88. Thorax in lateral view: 84. P. nigroclypeata, female 85. P. nitididorsata, female; 86. P. pailongensis, female; 87. P. qilianica, female; 88. P. xibei, male.

FIGURES 117 – 124 Gonoforceps and penis valve: 117. P. fulvocoxis, gonoforceps; 118. P. hengshani, gonoforceps; 119. P. maculopleurita, gonoforceps; 120. P. xibei, gonoforceps; 121. P. fulvocoxis, penis valve; 122. P. hengshani, penis valve; 123. P. maculopleurita, penis valve; 124. P. xibei, penis valve.