Aphelocerus sagittarius, 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 : 72-73

Aphelocerus sagittarius , new species Figures 62 , 110–113 , 135, 136 , 165 ;

map 21

HOLOTYPE: Male. ‘‘ Guatemala’ ’, L. Conradt ( MNHN). (Specimen mounted on a card, machine printed sex label affixed to specimen card; locality label, white, machine printed; Paris Museum repository label; holotype label, red, machine and hand printed.)

PARATYPES: Twelve specimens from Guatemala, L. Conradt ( DEIC, 3; MNHN, 6; WOPC, 3) .

DIAGNOSIS: Uniformly small beetles (4 mm); the cranium, pronotum, legs, and abdomen are cyanescent; the pygidia are trigonal; aedeagus distinctly sagittate; elytral discal setal tuft as in figure 165. Tegmen as in figures135 and 136.

DESCRIPTION: Size: Length 4.1–4.5 mm; width 1.7–2.0 mm. Integument: Cranium, pronotum, legs, and abdomen cyanescent; elytra piceous. Vestiture: Integument vested predominantly with dark setae, few pale setae; metepisternal, sutural tuft moderately developed, elytral discal tuft bipartite, anterior and posterior patches widely separated, setae of anterior patch directed anteriorly, setae of posterior patch directed posteriorly. Head: Width across eyes same as width across pronotum (22:22) finely punctate; interocular depressions and frontal umbo shallow; eyes subspherical, moderately convex, antenna as in figure 62. Thorax: Pronotum subequal in width and length (22:24), narrower than width of elytron across humeri (22:27); finely punctate, side margins subparallel, feebly incised by anterior transverse depression; elytral depth at humerus 14, greatest depth in posterior half 20; humeral umbo prominent. Abdomen: Pygidia (figs. 110, 112) trigonal; sixth visible abdominal sternum deeply incised in female (fig. 113), moderately incised in male (fig. 111). Male genitalia: As in figures 135 and 136.

VARIATION: In some specimens the elytra tend to be more brunneus than piceous (which may reflect a teneral condition of the specimens). The extent of development of the posterolateral outer angles of the parameres are variously expressed.

NATURAL HISTORY: No information available.

DISTRIBUTION (map 21): Known only from Guatemala.

ETYMOLOGY: The trivial name is taken from the Latin feminine sagitta (arrow). I refer to the arrow­shaped apex of the aedeagus.

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.