Pseudovelia extensa, Ye, Zhen, Polhemus, Dan A. & Bu, Wenjun, 2013

Ye, Zhen, Polhemus, Dan A. & Bu, Wenjun, 2013, A taxonomic contribution to the genus Pseudovelia Hoberlandt, 1951 (Hemiptera: Veliidae) from China, with descriptions of ten new species, Zootaxa 3636 (2), pp. 290-318 : 294-295

Pseudovelia extensa sp. n.

(Figs. 3, 16, 28, 40, 52, 64, 76, 88, 100, 112, 124)

Material examined. Holotype: apterous male, CHINA, Fujian Prov., Wuyishan mountain city, Wuyishan Mountain Nature Reserve, 9 August 2011, 700 m, Zhen Ye leg. (NKUM). Paratypes: CHINA, Fujian Prov.: 2 apterous males, 3 apterous females, same data as holotype (NKUM); 2 apterous males, 3 apterous females, Yongtai County, Xixi village, 15 August 2011, Zhen Ye leg. (NKUM). Guangdong Prov.: 3 apterous males, 5 apterous females, Zhaoqing city, Dinghushan Mountain Nature Reserve, Laoding, 23 August 2011, Zhen Ye leg. (NKUM); 5 apterous males, 6 apterous females, Huizhou city, Boluo County, Xiangtoushan Mountain Nature Reserve, 14 August 2012, 100m, Zhen Ye leg. (NKUM). Jiangxi Prov.: 2 apterous males, 4 apterous females, Ganzhou city, Longnan County, Jiulianshan Mountain Nature Reserve, Xiagongtang, 9 August 2012, 500m, Zhen Ye leg. (NKUM).

Description. Apterous male (Fig. 3). Colour: ground colour dull brown, head blackish brown, clypeus dark brown; labrum black, rostrum yellowish with black apex, buccula orange; basal part of antennal segment I orange, apical half part brown, segments II–IV blackish brown; pronotum dull orange, with dense, black spots on posterior part; legs mainly brown, basal part of femur yellowish, apex of femur and tibia infuscated, tarsus blackish brown; abdomen mainly dull brown, connexiva dull orange, lateral parts of mediotergite I, medial parts of mediotergites II, III, VI and VII with prominent silvery pubescence; segment VIII, pygophore and proctiger yellowish, each of them weakly infuscated apically. Structural characteristics: body length 2.51–2.54 (holotype: 2.52), medium-sized, slightly stout, bearing short, grayish hairs, area around the eyes and antennal segments I covered by relatively long, suberect, grayish hairs. Head short and wide, width: 0.53–0.55, length: 0.33–0.34, head width about 1.64 times head length, relatively perpendicular; labrum angulate, buccula clearly visible, but not produced posteriorly; eyes bare except for the presence of two ocular setae; antenna about 0.59 times as long as body, lengths of antennal segments I–IV: 0.45, 0.30, 0.32, 0.42. Pronotum slightly narrowed, width: 0.76–0.77, length: 0.41–0.43, about 1.81 times as wide as long; hind margin slightly rounded, with anterior margin slightly emarginated, dense darker punctures scattered on the posterior portion of pronotal lobe; metanotum completely hidden beneath pronotal lobe except laterally. Legs with fore tibia ( Figs. 16 , 28 ) widened in apically, with dense, short setae, medial poriton of venter on fore tibia with distinct process, length of grasping comb 0.32, about 0.55 times fore tibia length ( Fig. 28 ); middle leg ( Fig. 40 ) with short, suberect hairs; hind tibia ( Fig. 52 ) straight, with a row of 5–7 black short spines on lateral part, apical half slightly flattened, basal portion of venter on hind tarsal segment I with a cluster of relatively long, black bristles ( Fig. 64 ), ventral arolium bristlelike; lengths of leg segments (femur, tibia and tarsus): fore leg: 0.68, 0.60 and 0.32, middle leg: 0.87, 0.81 and 0.49 (0.15+0.34), hind leg: 0.98, 1.00 and 0.58 (0.28+0.3); mediotergites almost flat, connexival segments IV–VI approximately rectangular, slightly raised; mediotergites II–VI subequal in length; abdominal venter flat, slightly concave medially. Genital segments: relatively large, segment VIII ( Figs. 76 , 88 , 100 , 112 ) about 2.5 times as long as wide, posterior margin with a few short, brown, erect hairs, anterior margin of segment VIII bearing two long laminar structures, ventrally with an irregular shaped depression, hind margin of this depression with a pair (1+1) of laminar processes, lateral margin of depression with a pair of bristle-like setae; lateral part of sub-anterior margin of pygophore with a cluster of dense, slender, blackish brown hairs ( Fig. 124 ), posterior margin of pygophore with relatively dense, long, brown hairs; proctiger small, with apex rather blunt, lateral portion with a row of sparse, short, brown hairs, posterior margin with short, erect, black hairs; paramere symmetrical, small, twisted, with widened apex.

Apterous female. Similar to male but body slightly wider, body length: 2.48–2.51; structure of head including antenna as in male, head width: 0.56–0.57, head length: 0.38–0.39, head width about 1.47 times head length, antenna about 0.57 times as long as body, lengths of antennal segments I–IV: 0.41, 0.29, 0.31, 0.4; pronotum as in male, width: 0.7–0.71, length: 0.40–0.41, about 1.75 times as wide as long; fore tibia without grasping comb, medial portion of venter on fore tibia without process, middle leg normal, hind tibia straight, without a row of black short spines, basal parts of hind tarsal segment I without bristles; lengths of leg segments (femur, tibia and tarsus): fore leg: 0.63, 0.57 and 0.34, middle leg: 0.81, 0.78 and 0.43 (0.13+0.3), hind leg: 0.86, 0.97 and 0.48 (0.18+0.3); abdomen pleurally and ventrally without special modifications, connexiva broad, almost flat, converging posteriorly and touching caudally; end of abdomen rather high in lateral view, gonocoxa I elongate, proctiger blackish brown, with dense, short hairs.

Macropterous female and macropterous male: unknown.

Etymology. The specific epithet “ extensa ” (from Latin, meaning elongated) refers to the modification of the anterior margin of segment VIII which bears a pair of elongated laminar processes.

Diagnosis. Pseudovelia extensa sp. n. seems to be closely related to P. contorta sp. n.. However, P. extensa sp. n. can be distinguished by its slightly larger body size, with the body length in males being 2.51–2.54 (in P. contorta sp. n., by contrast, the male body length is 2.29–2.32); by hind tarsal segment I of males being normally formed, rather than curved; by differences in the structure of abdominal ventrite VIII (compare Figs. 76 , 88 , 100 , 112 with Figs. 75 , 87 , 99 , 111 ); and by having the posterior margin of pygophore gradually pointed ( Fig. 124 ).

Distribution. China (Fujian, Guangdong, Jiangxi) ( Fig. 138 ).

Figures

FIGURE 138. Geographical distribution of Pseudovelia from China.

FIGURES 14 – 25. Fore legs of Pseudovelia spp. (males). 14. P. anthracina sp. n.; 15. P. c o nt o r t a sp. n.; 16. P. extensa sp. n.; 17. P. fulva sp. n.; 18. P. globosa sp. n.; 19. P. h s i a o i sp. n.; 20. P. longiseta sp. n.; 21. P. piliformis sp. n.; 22. P. taiwanensis sp. n.; 23. P. vittiformis sp. n.; 24. P. pusilla Hecher, 1997; 25. P. tibialis tibialis Esaki & Miyamoto, 1955. Scale 0.3 mm.

FIGURES 26 – 37. Fore tibia of Pseudovelia spp. (males). 26. P. anthracina sp. n.; 27. P. c o n t o r t a sp. n.; 28. P. extensa sp. n.; 29. P. fulva sp. n.; 30. P. globosa sp. n.; 31. P. vittiformis sp. n.; 32. P. longiseta sp. n.; 33. P. piliformis sp. n.; 34. P. taiwanensis sp. n.; 35. P. hsiaoi sp. n.; 36. P. pusilla Hecher, 1997; 37. P. tibialis tibialis Esaki & Miyamoto, 1955. Scale 0.3 mm.

FIGURES 38 – 49. Middle legs of Pseudovelia spp. (males). 38. P. anthracina sp. n.; 39. P. c o n t o r t a sp. n.; 40. P. e x t e n s a sp. n.; 41. P. fulva sp. n.; 42. P. globosa sp. n.; 43. P. h s i a o i sp. n.; 44. P. longiseta sp. n.; 45. P. piliformis sp. n.; 46. P. taiwanensis sp. n.; 47. P. vittiformis sp. n.; 48. P. pusilla Hecher, 1997; 49. P. tibialis tibialis Esaki & Miyamoto, 1955. Scale 0.5 mm.

FIGURES 50 – 61. Hind legs of Pseudovelia spp. (males). 50. P. anthracina sp. n.; 51. P. c o n t o r t a sp. n.; 52. P. extensa sp. n.; 53. P. fulva sp. n.; 54. P. globosa sp. n.; 55. P. h s i a o i sp. n.; 56. P. longiseta sp. n.; 57. P. piliformis sp. n.; 58. P. taiwanensis sp. n.; 59. P. vittiformis sp. n.; 60. P. pusilla Hecher, 1997; 61. P. tibialis tibialis Esaki & Miyamoto, 1955. Scale 0.5 mm.

FIGURES 62 – 73. Hind tarsus of Pseudovelia spp. (males). 62. P. anthracina sp. n.; 63. P. c o n t o r t a sp. n.; 64. P. extensa sp. n.; 65. P. fulva sp. n.; 66. P. globosa sp. n.; 67. P. h s i a o i sp. n.; 68. P. piliformis sp. n.; 69. P. taiwanensis sp. n.; 70. P. vittiformis sp. n.; 71. P. pusilla Hecher, 1997; 72. P. tibialis tibialis Esaki & Miyamoto, 1955; 73. P. longiseta sp. n.. Scale 0.2 mm.

FIGURES 74 – 85. Photographs of abdominal segment VIII of Pseudovelia spp., ventral view (males). 74. P. anthracina sp. n.; 75. P. c o n t o r t a sp. n.; 76. P. e x t e n s a sp. n.; 77. P. fulva sp. n.; 78. P. globosa sp. n.; 79. P. hsiaoi sp. n.; 80. P. longiseta sp. n.; 81. P. piliformis sp. n.; 82. P. taiwanensis sp. n.; 83. P. vittiformis sp. n.; 84. P. pusilla Hecher, 1997; 85. P. tibialis tibialis Esaki & Miyamoto, 1955. Scale 0.2 mm.

FIGURES 86 – 97. Line drawings of abdominal segment VIII of Pseudovelia spp., ventral view (males). 86. P. anthracina sp. n.; 87. P. c o n t o r t a sp. n.; 88. P. e x t e n s a sp. n.; 89. P. fulva sp. n.; 90. P. globosa sp. n.; 91. P. hsiaoi sp. n.; 92. P. longiseta sp. n.; 93. P. piliformis sp. n.; 94. P. taiwanensis sp. n.; 95. P. vittiformis sp. n.; 96. P. pusilla Hecher, 1997; 97. P. tibialis tibialis Esaki & Miyamoto, 1955. Scale 0.2 mm.

FIGURES 98 – 109. Photographs of abdominal segment VIII of Pseudovelia spp., lateral view (males). 98. P. anthracina sp. n.; 99. P. c o n t o r t a sp. n.; 100. P. extensa sp. n.; 101. P. fulva sp. n.; 102. P. globosa sp. n.; 103. P. hsiaoi sp. n.; 104. P. longiseta sp. n.; 105. P. piliformis sp. n.; 106. P. taiwanensis sp. n.; 107. P. vittiformis sp. n.; 108. P. pusilla Hecher, 1997; 109. P. tibialis tibialis Esaki & Miyamoto, 1955. Scale 0.2 mm.

FIGURES 110 – 121. Line drawings of abdominal segment VIII of Pseudovelia spp., lateral view (males). 110. P. anthracina sp. n.; 111. P. c o n t o r t a sp. n.; 112. P. extensa sp. n.; 113. P. fulva sp. n.; 114. P. globosa sp. n.; 115. P. hsiaoi sp. n.; 116. P. longiseta sp. n.; 117. P. piliformis sp. n.; 118. P. taiwanensis sp. n.; 119. P. vittiformis sp. n.; 120. P. pusilla Hecher, 1997; 121. P. tibialis tibialis Esaki & Miyamoto, 1955. Scale 0.2 mm.

FIGURES 122 – 133. Pygophore of Pseudovelia spp., ventral view (males). 122. P. anthracina sp. n.; 123. P. c o n t o r t a sp. n.; 124. P. extensa sp. n.; 125. P. fulva sp. n.; 126. P. globosa sp. n.; 127. P. hsiaoi sp. n.; 128. P. longiseta sp. n.; 129. P. piliformis sp. n.; 130. P. taiwanensis sp. n.; 131. P. vittiformis sp. n.; 132. P. pusilla Hecher, 1997; 133. P. tibialis tibialis Esaki & Miyamoto, 1955. Scale 0.1 mm.