Akalyptoischion echinos Hartley, Andrews & McHugh 2008, new species
Creators: name: Hartley, Christopher S.
name: Andrews, Fred G.
name: Mchugh, Joseph V.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Latridiidae
Akalyptoischion
Akalyptoischion echinos

description: Akalyptoischion echinos Hartley, Andrews & McHugh new species  (Fig. 16)   
 Etymology. Greek meaning ‘‘spiny’’ referring to the short, erect hairs on the elytra.   
 Description. Length 1.2 mm. Width 0.35 mm. Body elongate, parallel sided, dark reddish brown; sparsely setose; head short, width equal to pronotum width, sides sinuate; clypeus narrowing at 45u angle anterior to antennal insertions; head foveae indistinct, elongate, with a faint anterior elongation reaching clypeal fovea; head setation uniform, setae very short and decumbent; head punctation dense, conspicuous on pointed specimen; eyes small and not prominent with 4 facets; tempora 1/2 eye width; hind angles 90u; clypeal fovea length of antennomere II, 0.7 times width of labrum; labrum anterior margin deeply emarginate, mandibles visible dorsally from beneath labrum; mandible apex broad with a large apical tooth and 4 subapical serrations, the 4th serration very small, prostheca short; antennae with a 3-segmented club; antennae reach hind angles of pronotum; antennomere I subglobular, slightly irregular, II elongate, sides slightly flattened, apex blunt, III small, globular, IV–VIII submonilliform, growing progressively larger, IX–XI form club, IX large, subglobular, X parallel sided, slightly flattened, wider than long, XI length equal to width, trapezoidal.   
Pronotum slightly wider anteriorly; anterior angles rounded, lateral margin arcuate, converging slightly posteriorly; lateral margin explanate with,9 small, indistinct, tubercles each bearing a short decumbent seta; median 2/3 raised with uniform very short decumbent setae; pronotal foveae transverse, equal in size; pronotal punctation dense, conspicuous on pointed specimen.  
Elytra parallel sided, lateral flange weak, present in anterior 1/3 only; 6 striae; strial punctures large; humeral angle prominently lobed; strial interspace 1 slightly raised, interspaces 3 and 5 carinate; interspaces 1, 3, 5, and lateral margin with short erect setae, other interspaces with short decumbent setae; epipleuron complete, narrowing posteriorly.  
Ventral surface evenly setose, setae very short; submental fovea deep, length of antennomere II with sparse large punctures and micropunctures; ventral head evenly punctate laterally, sparsely punctate at midline; gular punctation even, not dense; prosternal punctation sparse; mesosternum without sharp carinae; metasternum with an irregular fovea between mesocoxae, a transeverse fovea posterior to each mesocoxa, a narrow, transverse fovea anterior to each metacoxa, and median surface with few, widely scattered punctures; abdominal ventrite I with 2 incomplete circular foveae at anterior corners of intercoxal process, a large, irregular fovea nearly size of metacoxae posterior to each metacoxa, and median surface without punctures; ventrites II–IV unmodified.  
 Material Examined. HOLOTYPE, USA: label data: ‘‘CALIF: Merced Co., Los Banos Valley 8009, III-26-1987 F. Andrews, A. Hardy & T. Eichlin, Berlese Quercus Litter’ ’ (CDAE).   
PARATYPE, USA, same data as holotype, on slide (1, CDAE).  
 Remarks. This species resembles A. tomeus, from which it can be distinguished by its densely punctate head, lateral margin of the pronotum lacking setae, and shorter elytral setation (Fig. 16).
description: Published as part of Hartley, Christopher S., Andrews, Fred G. & Mchugh, Joseph V., 2007, A Taxonomic Revision Of The Genus Akalyptoischion Andrews (Coleoptera: Latridiidae), pp. 1-50 in The Coleopterists Bulletin (mo 6) (mo 6) 61 on pages 24-25, DOI: 10.1649/0010-065x(2008)61[1:atrotg]2.0.co;2, http://zenodo.org/record/4912035