Akalyptoischion hormathos Andrews

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 : 36-37

Akalyptoischion hormathos Andrews

( Fig. 37, 48)

Akalyptoischion hormathos Andrews 1976 a: 9

Description. Length 1.10–1.25 mm. Width 0.35–0.37 mm. Body elongate, subparallel, uniformly orange/brown to reddish brown; glabrous; head narrower than pronotum by one eye width, sides slightly sinuate, anterior head not much narrower than posterior head; clypeus narrowing at 45u angle anterior to antennal insertions; head foveae shallow, indistinct, size of eyes; head punctation irregular, not very dense, surface rugose; eyes small, not prominent and appressed to head, with 4 or 5 small facets; eyes sometimes unpigmented and indistinct; tempora 1/2 to 3/4 eye width; hind angles rounded, greater than 90u; clypeal fovea length of antennomere V, 0.7 times width of labrum; labrum anterior margin deeply and evenly emarginate; mandible apex pointed with an apical tooth and 3–4 subapical serrations decreasing in size basally, prostheca short; antennae with a 3- segmented club; antennae reach hind angles of pronotum; antennomere I wider than long, a slightly irregular oval, II slightly longer than wide, oval, III small, slightly elongate, sides arcuate, IV–VIII small, submonilliform, IX–XI form club, IX large, globular, X larger than IX, sides parallel, XI larger than X, parallel sided, elongate trapezoid.

Pronotum widest anteriorly, anterior angles rounded, lateral margin straight sided and converging slightly posteriorly; lateral margin slightly explanate with,10 small tubercles spaced far apart, each bearing a microscopic seta; median 2/3 raised; pronotal foveae indistinct, each oval shaped and limited to base of raised area; pronotal punctation irregular and not dense, surface rugose.

Elytra subparallel, lateral flange present in anterior 1/3 only; 6 striae; strial punctures large and touching each other; humeral angle evenly rounded, not lobed; strial interspaces 3 and 5 gently raised, not carinate; interspaces glabrous; epipleuron complete, narrowing posteriorly.

Ventral surface glabrous; submental fovea length of antennomere IV with few large punctures and sparse micropunctures; ventral head punctation even, not dense and sparser at midline; gular punctation very sparse and irregular; prosternum evenly punctate; mesosternum without sharp carinae; metasternum with a single fovea between mesocoxae, a small fovea posterior to each mesocoxa, an arcuate fovea anterior to each metacoxa, and median surface without punctures; abdominal ventrite I with 2 small indistinct punctures at anterior corners of intercoxal process, a large irregular fovea nearly as large as metacoxae posterior to each metacoxa, and median surface without punctures; ventrites II– IV unmodified.

Material Examined. PARATYPES, USA: label data: ‘‘ 2 mi SE Carmel Vly Monterey Co., Cal. III.31.1972,’’ ‘‘ Berlesed from Oak Duff,’’ ‘‘ Fred G Andrews KS Corwin Collectors,’’ 1 on slide (3, CDAE) .

Additional Material , ‘‘ 2 mi SE Carmel Vly Monterey Co., Cal. III.31.1972,’’ ‘‘ Berlesed from Oak Duff,’’ ‘‘ Fred G Andrews KS Corwin Collectors’ ’ (1, CDAE) ; ‘‘CALIF: Monterey Co. 2- 2 mi W Bottchers Gap XII-8-1983 A.Gilbert berlese redwood duff’’ (1, CDAE) ; ‘‘CALIF: Monterey Co. 1.1 mi W Bottchers Gap XII-8-83 berlese oak duff A.Gilbert’ ’ (1, CDAE) ; ‘‘CALIF: Monterey Co. 16 mi E Ganzales 1,0009 IV-6-1977 Berlese-live oak litter R.Somerby,’’ 1 on slide (11, CDAE) ; ‘‘CALIF: Monterey Co. 2.3 mi S Arroyo Seco , 1,500 –2,000 ft. IV-6- 1977 R. E. Somerby,coll.,’’ ‘‘ Berlesed from Oak Duff’ ’ (14, CDAE) ; ‘‘CALIF: Los Angeles Co Santa Barbara Island VI-6-1974 E.L. Paddock, R.F.Hobza et al.,colls.’’ (2, CDAE) .

Remarks. This species resembles A. atrichos but can be immediately distinguished by its lack of punctures on the median surface of abdominal ventrite I.