Pseudovelia taiwanensis, 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 : 301-302

Pseudovelia taiwanensis sp. n.

( Figs. 9 , 22 , 34 , 46 , 58 , 69 , 82 , 94 , 106 , 118 , 130 )

Material examined. Holotype: apterous male, CHINA, Taiwan Prov., Nantou County, Yuchi country, Lianhuachi, 11 November 2010, Wenjun Bu leg (NKUM). Paratypes: CHINA, Taiwan Prov.: 8 apterous males, 10 apterous females, same data as holotype (NKUM).

Description. Apterous male ( Fig. 9 ). Colour: ground colour brown, head blackish brown, clypeus, pseudocellar spots and median line of head dark brown; labrum black, rostrum dark yellow with black apex, buccula brown; basal part of antennal segment I dark yellow, apical part dark, segments II–IV blackish brown; pronotum dark brown, anterior part along head dark orange, posterior part with dense, black spots; legs mainly yellow brown, basal part of femur yellowish, with apex of femur weakly infuscated, tibia and tarsus blackish brown; abdomen mainly blackish brown, connexiva dark orange, lateral portions of mediotergite I, all of mediotergites II and III, medial parts of mediotergites VI and VII with prominent silvery pubescence; segment VIII, pygophore and proctiger yellowish, each of them apically infuscated. Structural characteristics: body length: 2.05–2.09 (holotype: 2.08), small-sized, rather stout, bearing short, suberect, grayish hairs, area around eyes and antennal segment I covered by relatively fewer, long, suberect, grayish hairs. Head short and wide, width: 0.51–0.53, length: 0.29–0.31, head width about 1.7 times head length, relatively perpendicular, posteriorly nearly straight; labrum angular, buccula clearly visible, not produced posteriorly; eyes bare except for the presence of two ocular setae; antenna about 0.53 times as long as body, lengths of antennal segments I–IV: 0.34, 0.20, 0.25, 0.32. Pronotum relatively broad, width: 0.66–0.68, length: 0.37–0.39, about 1.76 times as wide as long; with dense dark punctures scattered on posterior part of pronotal lobe, pronotum hind margin almost straight, with anterior margin slightly emarginated; metanotum completely hidden beneath pronotal lobe except laterally; fore tibia ( Figs. 22 , 34 ) slightly widened apically, with dense, suberect, short setae, medial portion of venter on fore tibia slightly convex, length of grasping comb 0.25, about 0.5 times fore tibia length ( Fig. 34 ); middle leg ( Fig. 46 ) with short, suberect hairs; hind tibia straight, with dense, short, decumbent hairs, basal portion of venter on hind tarsal segment I with a tuft of black bristles ( Figs. 58 , 69 ), ventral arolium bristle-like; lengths of leg segments (femur, tibia and tarsus): fore leg: 0.48, 0.50 and 0.26, middle leg: 0.65, 0.65 and 0.38 (0.14+0.24), hind leg: 0.70, 0.75 and 0.45 (0.20+0.25); mediotergites almost flat, connexival segments III–VI approximately rectangular and flat; mediotergites II–V subequal in length; abdominal venter flat, slightly concave medially. Genital segments: relatively small, segment VIII ( Figs. 82 , 94 , 106 , 118 ) about 1.96 times as long as wide, posterior margin with sparse, short and blackish brown hairs, ventrally with subtriangular depression, hind margin of depression with a pair (1+1) of processes with tufts of short, brown hairs; lateral part of depression with a pair (1+1) of spine-like short setae; lateral part of of pygophore ( Fig. 130 ) with a cluster of slender, brown hairs, posterior margin of pygophore with short, sparse, erect, black hairs; proctiger small, with rather blunt apex, posterior margin with rather short, erect, black hairs; paramere symmetrical, small, constricted medially, apical part widened with rounded apex.

Apterous female. Body small-sized, slightly larger than in male, body length: 2.21–2.24; structure of head including antenna as in male, head width: 0.53–0.55, head length: 0.29–0.31, head width about 1.8 times head length, antenna about 0.54 times as long as body, lengths of antennal segments I–IV: 0.31, 0.24, 0.27, 0.38; hind margin of pronotum straight, pronotum width: 0.69–0.71, pronotum length: 0.35–0.37, about 1.94 times as wide as long; fore tibia without grasping comb, hind tibia and tarsus unmodified, venter of hind tarsal segment I without a row or cluster of black bristles; lengths of leg segments (femur, tibia and tarsus): fore leg: 0.57, 0.53 and 0.28, middle leg: 0.70, 0.70 and 0.40 (0.13+0.27), hind leg: 0.80, 0.81 and 0.43 (0.14+0.29); abdomen pleurally and ventrally without special modifications, connexiva slightly raised and widened, converging posteriorly and touching caudally; end of abdomen raised in lateral view, gonocoxa I elongate, proctiger blackish brown, protrude backward, with dense, short hairs.

Macropterous female and macropterous male: unknown.

Etymology. The specific name is derived from the name of type locality, Taiwan Province, China.

Diagnosis. Pseudovelia taiwanensis sp. n. is closely related to P. vittiformis sp. n., with both species possessing a similar ventral morphology of abdominal segment VIII. However, P. taiwanensis sp. n. can be distinguished by its much smaller body, with the body length 2.05–2.09 in the male (in P. vittiformis sp. n., by contrast, the body length is 2.72–2.75 in male); by the medial portion of the venter on the fore tibia, which is not distinctly convex ( Fig. 34 ); and by the venter of the middle femur, which lacks any long, blackish brown hairs ( Fig. 46 ).

Distribution. China ( Taiwan) ( Fig. 138 ).

Figures

FIGURE 138. Geographical distribution of Pseudovelia from China.

FIGURES 8 – 13. Habitus of Pseudovelia spp. (males). 8. P. piliformis sp. n.; 9. P. t a i w a n e n s i s sp. n.; 10. P. vittiformis sp. n.; 11. P. tibialis tibialis Esaki & Miyamoto, 1955; 12. P. pusilla Hecher, 1997, macropterous form; 13. P. pusilla Hecher, 1997, apterous form. Scale 1.0 mm.

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.