Pseudovelia anthracina, 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 : 292-293

Pseudovelia anthracina sp. n.

(Figs. 1, 14, 26, 38, 50, 62, 74, 86, 98, 110, 122)

Material examined. Holotype: apterous male, CHINA, Zhejiang Prov., Lin’an city, Tianmushan mountain Nature Reserve, Tianmushan, mountain canyon, 2 August 2011, 1000 m, Zhen Ye leg. (NKUM). Paratypes: 3 apterous males, 2 apterous females, same data as holotype (NKUM).

Description. Apterous male (Fig. 1). Colour: ground colour black; head dark blackish-brown, clypeus, pseudocellar spots and median line of head dark brown; labrum black, rostrum dark yellow with black apex, buccula gray brown; antennal segment I brown, apical part dark, segments II–IV blackish brown; inner margin along eyes with prominent silvery pubescence; pronotum black, posterior part with dense, black spots, area behind head along anterior margin with a dull orange narrow band; legs mainly blackish brown, basal part of femur dark yellow, with apex of femur weakly infuscated, tibia and tarsus almost blackish brown; abdominal dorsum mainly black, abdominal venter mainly gray-black, connexiva black, lateral parts of mediotergite I, medial portions of mediotergites I–III and VI–VII and internal parts of laterotergites III–VI with prominent silvery pubescence; segment VIII, pygophore and proctiger yellowish, each of them apically infuscated. Structural characteristics: body length: 1.93–1.96 (holotype: 1.95), small-sized, relatively stout, set with short, grayish, suberect hairs, area around the eyes and antennal segment I bearing scattered, long, suberect, grayish hairs. Head short and wide, relatively perpendicular, width: 0.52–0.54, length: 0.29–0.31, head width about 1.77 times head length; labrum angulate, buccula clearly visible, but not produced posteriorly; eyes bare except for the presence of two ocular setae; antenna about 0.57 times as long as body, lengths of antennal segments I–IV: 0.30, 0.20, 0.22, 0.39. Pronotum relatively broad, width: 0.69–0.71, length: 0.32–0.33, about 2.12 times as wide as long; bearing dense dark punctures scattered on posterior part of pronotal lobe, hind margin of pronotum almost straight, with anterior margin slightly emarginated; metanotum completely hidden beneath pronotal lobe except laterally. Legs with venter of fore tibia ( Figs. 14 , 26 ) flat, bearing short, dense setae, length of grasping comb 0.48, about 0.42 times fore tibia length ( Fig. 26 ); middle leg ( Fig. 38 ) with short, suberect hairs; hind tibia ( Fig. 50 ) straight, with dense, short, decumbent hairs, venter of hind tarsal segment I ( Fig. 62 ) with a row of 4–6 relatively long, black bristles, ventral arolium bristlelike; lengths of leg segments (femur, tibia and tarsus): fore leg: 0.55, 0.48 and 0.23, middle leg: 0.68, 0.6 and 0.35 (0.11+0.24), hind leg: 0.69, 0.78 and 0.46 (0.18+0.28); mediotergites almost flat; abdominal venter flat, medially slightly concave. Genital segments: small, segment VIII ( Figs. 74 , 86 , 98 , 110 ) about 2.0 times as long as wide, posterior margin with short, sparse, erect, blackish brown hairs, anterior margin of segment VIII with a pair (1+1) of short, laminar processes and a subtriangular-shaped depression ventrally, lateral margin of this depression with a small, compact row of short setae, anterior and posterior margins respectively with a spine-like seta; posterior margin of pygophore ( Fig. 122 ) with short, sparse, erect, yellowish brown hairs; proctiger small, with apex rather blunt, posterior margin with rather short, erect, brown hairs; paramere symmetrical, small, stick-like, medial part slightly twisted, apical part widened with rounded apex.

Apterous female. Body larger than in male, almost oval, body length: 2.31–2.32; structure of head including antenna as in male, head width: 0.57–0.58, head length: 0.30–0.31, head width about 1.9 times head length, antenna about 0.52 times as long as body, lengths of antennal segments I–IV: 0.33, 0.22, 0.24, 0.40; hind margin of pronotum straight, pronotum width: 0.75–0.76, pronotum length: 0.33–0.34, about 2.2 times as wide as long; legs relatively slender, fore tibia without grasping comb, hind tibia and tarsus not modified, venter of hind tarsal segment I lacking a row or cluster of black bristles; lengths of leg segments (femur, tibia and tarsus): fore leg: 0.60, 0.50 and 0.28, middle leg: 0.70, 0.67 and 0.42 (0.14+0.28), hind leg: 0.80, 0.88 and 0.44 (0.15+0.29); abdomen pleurally and ventrally without special modifications, connexiva slightly raised and widened, converging posteriorly and touching caudally; end of abdomen high in lateral view, gonocoxa I elongate, proctiger black, with dense, short hairs.

Macropterous female and macropterous male: unknown.

Etymology. The specific epithet “ anthracina ” (from Latin, meaning black) refers to the nearly black color of the male and female dorsum.

Diagnosis. P. anthracina sp. n. is similar to P. hirashimai , with both of these two species having similar ground colour and silvery markings. However, P. anthracina sp. n. can be distinguished by having the pronotum about 1/2 as long as wide (in P. hirashimai , the pronotum is about 2/3 as long as wide); hind tarsal segment I about 3/5 the length hind tarsal segment II (in P. hirashimai , the length of hind tarsal segment I is subequal to hind tarsal segment II); the venter of hind tarsal segment I with a row of 4–6 long, black bristles (in P. hirashimai the venter of hind tarsal segment I bears a row of 3 long, black bristles); and differences in the ventral structure of abdominal segment VIII ( Figs. 74 , 86 , 98 , 110 ).

Distribution. China (Zhejiang) ( 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.