Akalyptoischion bathytrematos Hartley, Andrews & McHugh, 2008

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 : 18-19

Akalyptoischion bathytrematos Hartley, Andrews & McHugh new species ( Fig. 41 , 51)

Etymology. Greek meaning ‘‘deep hole’’ referring to the small, deep postcoxal foveae on abdominal ventrite I.

Description. Length 1.30–1.50 mm. Width 0.40–0.50 mm. Body elongate, subparallel, surface shining, uniformly light amber to dark reddish brown; uniformly setose; head narrower than anterior pronotum by size of one eye facet, sides straight; head foveae distinct, deep, round, smaller than eyes; head setation dense, setae short and decumbent; head punctation even, surface rugose; eyes slightly prominent with 2 large facets; tempora very short, size of one eye facet; hind angles sharp, 90u; clypeal fovea 1/2 length of scape, 0.7 times width of labrum; labrum anterior margin slightly emarginate, mandibles slightly visible dorsally from beneath labrum; mandible apex pointed with an apical tooth and 4 subapical serrations, prostheca long; antennae with a 3-segmented club; antennae reach hind angles of pronotum; antennomere I irregular, wider than long, II elongate oval, III small, straight sided, slightly elongate, IV–V slightly longer than III, sides arcuate, VI–VIII submonilliform, IX–XI form loose club, IX large, oval, X larger than IX, oval, XI elongate, subrectangular.

Pronotum widest anteriorly; anterior angles rounded, lateral margin arcuate, converging posteriorly; lateral margin slightly explanate with,11 decumbent setae; median 3/4 raised evenly setose; pronotal foveae distinct, transverse, anterior pair connected medially by a shallow furrow; pronotal punctation evenly punctate.

Elytra subparallel, lateral flange present in anterior 1/2; 6 striae; humeral angle evenly rounded; strial interspaces 1, 3 and 5 raised; erect setae present on interspaces 1, 3, 5 and lateral margin, these setae curved anteriorly and straight at elytral apex, other intervals with short decumbent setae; epipleuron complete, narrowing posteriorly.

Ventral surface evenly setose; submental fovea crescent shaped, length of antennomere III, densely micropunctate; ventral head punctation even laterally, no punctures at midline; gular punctation even; prosternum sparsely punctate; mesosternum without sharp carinae; metasternum with a distinct fovea between and posterior to each mesocoxa, a small, indistinct fovea anterior to each metacoxa, and median surface without punctures; abdominal ventrite I without foveae on intercoxal process, with a single, deep, circular fovea posterior to each metacoxa, and median surface without punctures; ventrites II–IV unmodified.

Material Examined. HOLOTYPE, label data: ‘‘ MEXICO, Baja California 12.7 km East El Rosario Lat. 30u049150N, Long. 115u379100W 180 m,’’ ‘‘ETHYLENE GLYCOL PITFALL TRAP # 1 1-IV-1985 TO 2-III-1986. W. H. CLARK P.E. BLOM COLLECTORS’’ ( CIDA).

PARATYPES, same data as holotype (2, CIDA) ; ‘‘ MEXICO, Baja California 11.7 km East El Rosario Lat. 30u049300N, Long. 115u379550W 180 m,’’ ‘‘ETHYLENE GLYCOL PITFALL TRAP # 3 1-IV-1985 TO 2-III-1986. W. H. CLARK P.E. BLOM COLLECTORS’’ (2, CIDA) ; ‘‘ MEXICO, Baja California 14.7 km East El Rosario Lat. 30u049100N, Long. 115u369000W 190 m,’’ ‘‘ 7 II 1984 - 2 IV 1985 PITFALL TRAP km 70 # 1 ETHYLENE GLYCOL W.H. Clark & P. E. Blom,’’ on slide (1, CDAE) : ‘‘ MEXICO, Baja California 12.7 km East El Rosario Lat. 30u049150N, Long. 115u379100W 180 m,’’ ‘‘ETHYLENE GLYCOL PITFALL TRAP # 1 1-IV-1985 TO 2-III-1986. W. H. CLARK P.E. BLOM COLLECTORS’’ (2, CIDA) : 12.7 km East El Rosario Lat. 30u049150N, Long. 115u379100W 180 m,’’ ‘‘ 7 II 1984 – 2 IV-1985 ’’ (1, CIDA) : ‘‘ 11.7 km East El Rosario Lat. 30u049300N, Long. 115u379550W 180 m’’ (7, CIDA) : ‘‘ 11.7 km East El Rosario Lat. 30u049300N, Long. 115u379550W 180 m,’’ ‘‘ 7 II 1984 – 2 IV 1985 ’’ (5, CIDA) : ‘‘ 14.7 km East El Rosario Lat. 30u049100N, Long. 115u369000W 190 m,’’ ‘‘ 3–20 March 1986 ’’ (2, CIDA) : ‘‘ 14.7 km East El Rosario Lat. 30u049100N, Long. 115u369000W 190 m,’’ ‘‘ 1-IV-1985 TO 2-III- 1986 ’’ (15, CIDA) : ‘‘ 14.7 km East El Rosario Lat. 30u049100N, Long. 115u369000W 190 m,’’ ‘‘ 7 II 1984 - 2 IV 1985 ’’ (6, CIDA) : ‘‘ 14.7 km East El Rosario Lat. 30u049100N, Long. 115u369000W 190 m,’’ ‘‘ 9 March 1991 To: 18 July 1991,’’ ‘‘ William H., Mary H., Cynthia J., & Karen D. Clark, & Jane C. Luther Collectors’ ’ (1, CIDA) : ‘‘ 14.7 km East El Rosario Lat. 30u049100N, Long. 115u369W Elev. 190 m. ’’, ‘‘ 22 VI 1990 To: 9 III 1991,’’ ‘‘ William H. Clark Ellen M. Clark Collectors (1, CIDA) : ‘‘ 9.7 km E El Rosario lat 30u059150N, Long 115u399000W 140 m,’’ ‘‘ 7 II 1984 – 2 IV-1985 ’’ (1, CIDA) : ‘‘ MEXICO, Baja California Sur, SE base of Mesa El Tecolote, Lat. 26u599 N Long. 113u 269W. El . 120 m,’’ ‘‘PITFALL TRAP ETHYLENE GLYCOL 16 March 1991 To : 8 July 1991,’’ ‘‘ William H., Mary H., Cynthia J., & Karen D. Clark, & Jane C. Luther Collectors’ ’ (1, CIDA) .

Remarks. This species resembles A. heptalocos , which also has 2-faceted eyes and has similar elytral setation. It may immediately be distinguished by having 6 elytral striae instead of 7.

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.