Aphelocerus acutus, 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 : 56

YUNGAS GROUP Aphelocerus acutus , new species Figures 61 , 105, 106 , 130, 133 , 169 , 268 ; map 7

HOLOTYPE: Male. Mexico, Chis., 9 mi SE Tapilula, Hwy. 195, 24 V 1983, 5100 ft, C. & L. O’Brien & G. B. Marshall ( LACM). (Specimen point mounted; sex label affixed to paper point, white, hand printed; support card, white; locality label, white, machine printed; LACM repository label; holotype label, machine printed; plastic vial with abdomen and aedeagus.)

PARATYPES: Thirty­seven specimens. Five specimens from the same locality as the holotype ( JNRC, 3; WOPC, 2). Mexico: Chiapas: Hwy. 190, 14 km E Jct. W. Hwy 195, 169 m, 20­VI­1991, J. & E. Beierl ( JNRC, 2; WOPC, 1) ; Montebello Nat. Pk. , 17­V­ 1969, H. J. Teskey ( CNCI, 1) ; 32 km N. Bochil, Yerba Buena , 1737 m, 8­VI­1969, Mal. trap ( CNCI, 1) ; Colonia ( ZMHB, 2; WOPC, 1) ; A. Heyne, ( WOPC, 1) ; 6.4 km NW of Pueblo Nuevo, River Bajada , 15­VII­ 1965, G. H. & K. L. Nelson ( WOPC, 2) ; Lagunas , Montebello, 5­VI­1974, C. W. O’Brien ( WOPC, 3) ; 2.8 km W entrance Pargue de Laguna Montebello , 21­VI­1990, R. Turnbow ( RHTC, 1) ; Sumidero Cyn. , 1219 m, 14 –26­VI­1987, J. E. Wappes ( JEWC, 1; WOPC, 1) ; Sumidero Cyn., 1219 m, 14­VI­1987 ( FSCA, 5; WOPC, 3) ; Ruinas de Chinkultik , 16­VI­1987, E. Giesbert ( FSCA, 1) ; Oaxaca: Tepamacoalco ( MNHN, 1). Guatemala: Huehuetenago : 15 km N Nenton, 950 m 5­VI­1997, E. Giesbert, J. Monzon ( FSCA, 2; WOPC, 2) .

DIAGNOSIS: The members of this species differ from the superficially similar specimens of A. cornuatus , n.sp., by the cyanescent hue of the pronotum and trigonal shape of the male and female pygidia (figs. 105, 106). The shape of the elytral middiscal setal tuft is as in figure 169.

DESCRIPTION: Size: Length 4.3–4.8 mm; width 1.6–1.8 mm. Integument: Head, pronotum, femora, pterothorax, and abdomen cyanscent; tibiae, tarsi, and elytra piceous. Vestiture: Integument vested mostly by dark setae, few pale setae; metepisterial, sutural, and elytral discal tufts well developed; latter bipartite, setae of anterior patch directed anteriorly, setae of posterior patch directed towards sutural margin. Head: Width across eyes feebly narrower than width across pronotum (20:21); frontal umbo and interocular depressions shallow; eyes subspherical, moderately convex; antenna as in figure 61. Pronotum: Equal in width and length (22: 22), considerably narrower than width of elytra across humeri (22:20), finely punctate, side margins moderately arcuate, feebly indented by subapical depression; elytra feebly convex in posterior half, depth at humerus 12, greatest depth in posterior half 15, surface finely punctated and shiny. Abdomen: Male and female pygidia as in figures 105 and 106, respectively. Male genitalia: As in figure 133; parameres acuminate; ventral sinus twice length of dorsal sinus.

VARIATION: The elytra vary from piceous to brunneus.

NATURAL HISTORY: Specimens have been collected during May (1554 m), June (1220 m, malaise trap at 1730 m), and July (sweeping).

DISTRIBUTION (map 7): Known only from southeastern Mexico and western Guatemala.

ETYMOLOGY: From the Latin acutus (point­ ed). I refer to the acuminate shape of the parameres.

Figures

Figs. 47–61. Habitus view and antennas. 47. Aphelocerus formicoides (habitus, lateral view). 48– 61. Antennas. 48. A. ciliaris. 49. A. inconstans. 50. A. domus. 51. A. echinatus. 52. A. bispineus. 53. A. citimus. 54. A. leucomelas. 55. A. coalitus. 56. A. inbatus. 57. A. coactus. 58. A. nitidus. 59. A. lividus. 60. A. cornuatus. 61. A. acutus.

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.

Figs. 261–268. Aedeagi, male internal reproductive organs and elytra. 261. Aphelocerus nitidus, aedeagus. 262–263. A. cirritus (262, aedeagus; 263, internal reproductive organs). 264. A. dispilis, aedeagus. 265. A. torosus, aedeagus. 266. A. capillus, internal reproductive organs. 267. A. torosus, elytron. 268. A. acutus, elytron.