Aphelocerus humerus, 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 : 61-62

Aphelocerus humerus , new species Figures 67 , 114, 115 , 168 ; map 21

HOLOTYPE: Female. Honduras: Cortes, 20 km N Cofradia , 4­VII­1977, C. W. O’Brien ( AMNH). (Specimen point mounted; pygidium, sixth visible abdominal sternum, and machine printed sex label affixed to paper pointed; support card; locality label; AMNH repository label, white, machine printed; ho­ lotype label, red, machine printed; plastic vial with abdomen.)

PARATYPES: None.

DIAGNOSIS: The available specimen is superficially similar to specimens of A. naevius , n.sp. In A. humerus , n.sp., specimens, however, the elytral setal tuft is bipartite (fig. 168) and there is a more pronounced swollen humeral umbo and deeper concavity behind the humerus.

DESCRIPTION: Size: Length 5.0 mm; width 2.0 mm. Integument: Brown. Vestiture: Integument vested predominantly with pale setae, few dark setae; metepisternal, sutural, and elytral tufts well developed; latter bipartite, anterior patch with setae directed towards epipleuron, setae of posterior patch directed posteriorly. Head: Width across eyes feebly narrower than width across pronotum (24:28), very finely punctate; interocular depression and frontal umbo moderately defined; eyes subspherical, moderately convex; antenna as in figure 67. Thorax: Pronotum subequal in width and length (28:29), narrower than width of elytral across humeri (28:34); pronotal disc finely punctate; elytral humeral umbo very prominent; elytra concave behind humeral umbo, depth at humerus 15, greatest depth in posterior half 22. Abdomen: Female pygidium (fig. 114) evenly convex in posterior margin; sixth visible sternum (fig. 115) strongly incised.

NATURAL HISTORY: The only available specimen was collected from the type locality in July.

DISTRIBUTION (map 21): Known only from western Honduras.

ETYMOLOGY: The trivial name humerus (shoulder) is a Latin noun used here to accentuate the prominence of the swollen umbo behind the humeral angle.

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. 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.