Akalyptoischion anasillos Andrews, 1976

Hartley, Christopher S., Andrews, Fred G. & Mchugh, Joseph V., 2007, A Taxonomic Revision Of The Genus Akalyptoischion Andrews (Coleoptera: Latridiidae), The Coleopterists Bulletin (mo 6) 61, pp. 1-50 : 12-14

Akalyptoischion anasillos Andrews

( Figs. 38 , 42 )

Akalyptoischion anasillos Andrews 1976 a: 13

Description. Length 1.25–1.40 mm. Width 0.35–0.45 mm. Body elongate, subparallel, uniformly brown; uniformly setose, setae long and dense. Head narrower than anterior pronotum by size of one eye facet, sides sinuate, clypeus narrowing at 45u angle anterior to antennal insertions; head foveae large, longitudinally elongate, size of eyes; head setation dense, setae long and decumbent, with erect setae present along posterior margin and at posterior corners near eyes; head punctation sparse and irregular, not dense; eyes not or very slightly prominent with 4 facets; tempora length 1/2 to 3/4 eye width; hind angles 90u; clypeal fovea length of antennomere II, 0.7 width of labrum; labrum anterior margin not to slightly emarginate; mandible apex pointed with 4 or 5 teeth, prostheca long; antennae with a 3-segmented club, antennae reach hind angles of pronotum; antennomere I irregular, wider than long, bearing a long, stout seta on its posterior face, II elongate oval, III–V slightly elongate, becoming progressively rounder, VI–VIII globular, submonilliform, IX–XI form club, IX– X subequal, globular, XI larger than X, slightly longer than wide, subrectangular.

Pronotum widest anteriorly; anterior angles rounded, lateral margin straightsided and converging slightly posteriorly; lateral margin slightly explanate with,9 tubercles, each bearing a long erect seta; median 3/5 raised with dense, long decumbent setae; pronotal foveae transverse, distinct but shallow; pronotal punctation sparse and irregular.

Elytra subparallel, lateral flange weak, visible in anterior 1/2 only; 6 striae; humeral angle 90u; strial interspaces 3 and 5 strongly raised; dense, long decumbent setae present on all interspaces, interspaces 1, 3, 5, and lateral margin also with long erect setae; epiplueron complete, narrowing posteriorly.

Ventral surface evenly setose, setae long; submental fovea deep and distinct, length of antennomere III, smooth and sparsely micropunctate; ventral head punctation even laterally, midline without punctures; gular punctation dense and concentrated in a posterior patch; prosternal punctation arranged in two lateral rows; mesosternum without sharp carinae; metasternum with a large, single fovea between mesocoxae, single foveae posterior to each mesocoxa, transverse fovea anterior to each metacoxa, and median surface without punctures; abdominal ventrite I with 2 distinct, round foveae at anterior corners of intercoxal process, a transverse fovea posterior to each metacoxa, and 2 single punctures on median surface situated below corners of intercoxal process; ventrites II–IV unmodified.

Material Examined. PARATYPES, USA: label data: ‘‘ Frazier Park , Los Angeles Co., Cal. I-13-1960,’’ ‘‘ex Berlesed from oak duff,’’ ‘‘ E.L. Sleeper collector,’’ 2 on slide (6, CDAE); ‘‘ Frazier Park, Los Angeles Co., Cal. I-14- 1961,’’ ‘‘ex Berlesed from oak duff,’’ ‘‘ E.L. Sleeper collector,’’ 2 on slide (4, CDAE) .

Additional Material, ‘‘CALIF: Riverside Co. Bautista Canyon 4 mi. SE Valle Vista XII-16-1977 K.W. Cooper,’’ ‘‘berlesed from Quercus litter at base of Yucca’’ (3, CDAE); ‘‘CALIF: Riverside Co 4 mi SE Valle Vista II-19-78 K.Cooper debris base dead Yucca 78-56’’ (2, CDAE); ‘‘CALIF: Riverside Co 4 mi SE Valle Vista II-1978 K.Cooper Oak litter 78-57,’’ 1 on slide (3, CDAE); ‘‘CALIF: Riverside Co 2 mi SW Vail Lake IV-8-78 J.Moore Base of Oak 78-64’’ (4, CDAE); ‘‘CALIF: Riverside Co Bautista Canyon 79-103 7.7 mi. SE Valle Vista VI-1-1979 KWCooper,’’ ‘‘berlese Neotoma nest from exterior of fallen oak tree’’ (11, CDAE); ‘‘CALIF: Riverside co. Vail Lake IV-8-1980 KW Cooper & FG Andrews 80-155,’’ ‘‘berlese Neotoma nest at base of Quercus dumosa’’ (2, CDAE); ‘‘CALIF: Riverside Co. Vail Lake IV-22-1980 KW Cooper 80-162,’’ ‘‘Berlesed from Neotoma nest at base of Adenostoma’’ (2, CDAE); ‘‘CALIF: Riverside Co. Bautista Cny XII-30-1988 F.G. Andrews Berlesed from Neotoma nest (1, CDAE); ‘‘CALIF: Los Angeles Co. Bouquet Canyon 2 mi. NE Bouquet Reservoir IV-28-1982 K.W.Cooper & F.G.Andrews 82-229,’’ ‘‘berlese Neotoma nest in hollow of standing oak’’ (4, CDAE); ‘‘CALIF: Riverside Co. 2 mi. SW Vail Lake II-14-1981 81-192 J.A.Moore berlese litter base of oak,’’ 1 on slide (8, CDAE); ‘‘CALIF: Santa Barbara Co., New Cuyama VI-28-1975 ex Inland oak litter Hobza & Muldowney, colls.(2, CDAE); ‘‘CALIF: Riverside Co. El Carizo Oaks, Santa Rosa Mts. 3,0009 VIII-24-1983 K.W. Cooper 83-256,’’ ‘‘Berlesed from Neotoma nest under oak’’ (2, CDAE); ‘‘CALIF: Santa Barbara Co. Figueroa Mt. 3,4009 VIII-11-1983 K.W. Cooper 83-255,’’ ‘‘ Neotoma nest on oak hillside’’ (4, CDAE); ‘‘CALIF: Riverside Co. Vail Lake XI-18-85 damp Neotoma nest under Quercus K.W. Cooper 83-260’’ (1, CDAE); ‘‘CALIF: Riverside Co. 2 mi. SW Vail Lake II-14-1981 81-192 J.A. Moore berlese litter base of oak’’ (2, CDAE); ‘‘CALIF: Kern Co. Havilah X-30-1984 Neotoma nest under oak Fred G. Andrews’’ (4, CDAE); ‘‘Trabuco Cyn Orange Co., Cal. 19,’’ ‘‘ex Berlesed oak duff,’’ ‘‘E.L. Sleeper collector’’ (5, CDAE); Figueroa Mts Santa Barbara Co. 19,’’ ‘‘E.L. Sleeper’’ (4, CDAE); ‘‘Figueroa P.C., Sta Barbara Co., Cal. V.21.1961,’’ ‘‘E.L. Sleeper collector,’’ 1 on slide (2, CDAE); ‘‘Cleveland Nat For. Orange Co Calif. VI-15-1957,’’ ‘‘ Ilex litter,’’ ‘‘I. M. Newer Colr.’’ (1, CDAE).

Remarks. The erect setae on the head distinguish this species from all others except A. hadromorphus and A. pogonias . Akalyptoischion anasillos closely resembles A. hadromorphus but can be distinguished by its narrower pronotum with rounded anterior angles, shorter antennomeres and shorter, more compact antennal club. Akalyptoischion anasillos can be distinguished from A. pogonias by its densely setose head and pronotum and by its first abdominal ventrite, which has two punctures on the median surface.

Figures

Figs. 36–41. Akalyptoischion spp. head, ventral view, SEM. 36) A. atrichos; 37) A. hormathos; 38) A. anasillos; 39) A. giulianii; 40) A. tomeus; 41) A. bathytrematos.

Figs. 42–47. Akalyptoischion spp. prothorax, dorsal view, SEM. 42) A. anasillos; 43) A. hadromorphus; 44) A. dyskritos; 45) A. giulianii; 46) A. sleeperi; 47) A. chandleri.