Taenionema jacobii Stanger & Baumann, 1993

Stewart, Kenneth W., 2009, New Descriptions Of North American Taenionema Larvae (Plecoptera: Taeniopterygidae), Illiesia 5 (12), pp. 128-145 : 132-133

Taenionema jacobii Stanger & Baumann

( Figs. 48 , 90 , 103 )

Distribution. Southwest; Arizona and New Mexico.

Material examined. New Mexico: Grant Co., Cherry Creek at Hwy. 255 bridge, 14-III-1984, G.Z. Jacobi & D.U. Potter, 4♂ larvae and 5♀ larvae; same data, separate vial, 3♂ larvae and 1♀ larva labeled “ holotype 4 N” .

Characters. Color, pigmentation, maxillae, body, leg ( Fig. 48 ) and cercal setation, and sexual dimorphism generally typical of genus. Body small, ♂ and ♀ 6-7 mm. Antennal segments ♂ 56-60, ♀ 60-64. Cercal segments ♂ and ♀ 42-44. Male 9 th sternum ( Fig. 90 ) broadly triangulate behind greatest width, with broadly rounded apex; anterior portion broadly triangulate with straight sides. Female 9 th sternum ( Fig. 103 ) narrowly triangulate behind greatest width, with nearly straight posterolateral sides and anterior portion with slightly convex sides.

Figures

Figs. 39-55. Taenionema larvae. 39. side view T. raynorium thorax. 40-45. mesosternal Y-pattern. 40. T. grinelli. 41. T. jewetti. 42. T. kincaidi. 43. T. pallidum. 44. T. raynorium. 45. T. uinta. 46-55. right front legs, dorsal. 46. T. atlanticum. 47. T. grinelli. 48. T. jacobii. 49. T. jeanae. 50. T. jewetti. 51. T. kincaidi. 52. T. oregonense. 53. T. pacificum. 54. T. pallidum. 55. T. raynorium. 56. T. uinta.

Figs. 87-99. Male Taenionema larval terminalia and 9th sterna, ventral. 87. T. atlanticum. 88. T. californicum. 89. T. grinelli. 90. T. jacobii. 91. T. jeanae. 92. T. jewetti. 93. T. kincaidi. 94. T. oregonense. 95. T. pacificum. 96. T. pallidum. 97. T. raynorium. 98. T. umatilla. 99. T. uinta.

Figs. 100-112. Female Taenionema nymph terminalia and 9th sterna, ventral. 100. T. atlanticum. 101. T. californicum. 102. T. grinelli. 103. T. jacobii. 104. T. jeanae. 105. T. jewetti. 106. T. kincaidi. 107. T. oregonense. 108. T. pacificum. 109. T. pallidum. 110. T. raynorium. 111. T. umatilla. 112. T. uinta.