Aphelocerus arenatus, OPITZ, 2005

OPITZ, WESTON, 2005, Classification, Natural History, And Evolution Of The Genus Aphelocerus Kirsch (Coleoptera: Cleridae: Clerinae), Bulletin of the American Museum of Natural History 2005 (293), pp. 1-128 : 78

Aphelocerus arenatus , new species Figures 70 , 120 , 134 , 173 ; map 21

HOLOTYPE: Female. Rio Sn. Lorenzo , Tierras Morenas, Tenorio, A. C. A., Prov. Guana. COSTA RICA, 1050 m, Mar. 1994. G. Rodriquez, L N 287800–427600 # 2761 ( INBC). (Specimen point mounted, sex label affixed to paper point; locality label, white, machine printed; electronic label, plastic, machine printed; INBC repository label, white, machine printed; holotype label, red, machine printed.)

PARATYPES: Five specimens. Three from the same locality as the holotype ( JNRC, 2; WOPC, 1). Costa Rica: San Jose: 5 km SW Escazu, 1200 m, 24­V­1995, beating, J. Rifkind, H. Lezama ( WOPC, 1): Alajuela: Volcan Poas, 9–10­VII­1963, C. L. Hogue ( WOPC, 1) .

DIAGNOSIS: These beetles may be distinguished from other specimens that have the cranium and pronotum cyanscent by having the pronotal disc coarsely punctate anterior to a feebly impressed anterior transverse depression, and the elytral discal setal tuft (fig. 173) is comprised of a large anterior patch whose setae are directed anteriorly and a very small posterior patch comprised of only a few posteriorly directed setae.

DESCRIPTION: Size: Length 5.0 mm; width 2.0 mm. Integument: Cranium, pronotum, pterothorax, legs, and abdomen cyanescent; elytra piceous. Vestiture: Head, prothorax, elytra, and protibia vested with predominantly dark setae, pterothorax, femora, and meso­metatibiae vested profusely with pale setae; tarsi vested with dark setae; epipleural margin vested densely with pale setae; elytral setal tuft bipartite, with large anterior patch and small posterior patch. Head: Width across eyes feebly narrower than width across pronotum (35:38), finely punctate; interocular depressions and frontal umbo shallow; eyes subspherical, moderately convex; antenna as in figure 70. Thorax: Pronotum equal in width and length (38:38), considerably narrower than elytra across humeri (38: 50), disc in front of anterior transverse depression coarsely punctate, side margin moderately arcuate, feebly incised by anterior transverse depression; elytra moderately convex; depth at humerus 22, greatest depth in posterior half 28, humeral umbo prominent. Abdomen: Distal margin of male pygidium (fig. 120) feebly incised. Male genitalia (fig. 134): Parameres explanate at base.

VARIATION: The available specimens did not vary appreciably.

NATURAL HISTORY: Specimens were collected by beating, in May; one on a flowering tree; one at 1200 m. One additional specimen was collected in July.

DISTRIBUTION (map 21): Known only from central Costa Rica.

ETYMOLOGY: The trivial name is comprised of the Latin arena (a place for games) and the Latin suffix ­ tus (pertaining to). I refer to the athletic fields at the University of Costa Rica from which some of these specimens were collected.

Figures

Figs. 62–84. Antennae. 62. Aphelocerus sagittarius. 63. A. irroratus. 64. A. naevius. 65. A. triangulus. 66. A. extensivus. 67. A. humerus. 68. A. argus. 69. A. protenus. 70. A. arenatus. 71. A. patulus. 72. A. monteverde. 73. A. chondrus. 74. A. catie. 75. A. chiriqui. 76. A. immarginatus. 77. A. anticus. 78. A. yungas. 79. A. batesi. 80. A. bufustis. 81. A. acanthus. 82. A. sturnus. 83. A. myrmecoides. 84. A. scutellaris.

Figs. 85–120. Antennae, pygidia, and sixth visible abdominal sterna. 85–90. Antennae. 85. Aphelocerus affaniatis. 86. A. dispilis. 87. A. formicoides. 88. A. cheliferous. 89. A. panus. 90. A. calvus. 91– 120. Pygidium and/or sixth visible abdominal sternum. 91–94. A. ciliaris. 91–92. male (91, pygidium; 92, sixth visible abdominal sternum). 93–94. female (93, pygidium; 94, sixth visible dominal sternum). 95. A. coactus, female pygdium. 96. A. domus, female pygidium. 97–100. A. coalitus, male (97, pygidium; 98, sixth visible abdominal sternum), 99–100. Female (99, pygidium; 100, sixth visible abdominal sternum). 101. A. leucomelas, male pygidium. 102–104. A. coactus. 102–103. male (102, pygidium; 103, sixth visible abdominal sternum). 104, female, pygidium. 105–106. A. acutus, pygidea (105, male; 106, female). 107–109. A. lividus. 107, male (pygidium). 108–109, female (108, pygidium; 109, sixth visible abdominal sternum). 110–113. A. sagittarius. 110–111, male (110, pygidium; 111, sixth visible abdominal sternum). 113, female, pygidium. 114–115. A. humerus, female (114, pygidium; 115, sixth visible abdominal sternum). 116–117. A. naevius, female (116, pygidium; 117, sixth visible abdominal sternum). 118–119. A. triangulus, female (118, pygidium; 119, sixth visible abdominal sternum). 120. A. arenatus, male, pygidium.

Figs. 121–138. Tegmina or phalli. 121. Aphelocerus inconstans, tegmen. 122. A. inconstans, tegmen. 123. A. citimus, tegmen. 124. A. argus, tegmen. 125. A. echinatus, tegmen. 126–127. A. leucomelas (126, tegmen; 127, phallus). 128–129. A. coalitus (128, tegmen; 129, phallus). 130. A. acutus, tegmen. 131. A. lividus, tegmen. 132. A. irroratus, tegmen. 133. A. acutus, tegmen. 134. A. arenatus, tegmen. 135–136. A. sagittarius tegmina (135, ventral view; 136, lateral view). 137. A. sculptillus, tegmen. 138. A. protenus, tegmen.

Figs. 162–183. Aedeagus, habitus, elytral discal setal tufts. 162. Aphelocerus dispilis, aedeagus. 163. Weevil, Myrmex sp. 164. Aphelocerus myrmecoides, 165–183. Elytral discal setal tufts. 165. A. sagittarius. 166. A. triangulus. 167. A. cornuatus. 168. A. humerus. 169. A. acutus. 170. A. lividus. 171. A. protenus. 172. A. argus. 173. A. arenatus. 174. A. catie. 175. A. chiriqui. 176. A. yungas. 177. A. monteverde. 178. A. anticus. 179. A. batesi. 180. A. bufustis. 181. A. acanthus. 182. A. yungas. 183. A. sturnus.