Akalyptoischion prionotus 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 : 42-43

publication ID

https://doi.org/ 10.1649/0010-065x(2008)61[1:atrotg]2.0.co;2

persistent identifier

https://treatment.plazi.org/id/DF72321B-FFB6-FFA3-FF4F-FB13FE5ED98B

treatment provided by

Carolina

scientific name

Akalyptoischion prionotus Hartley, Andrews & McHugh
status

sp. nov.

Akalyptoischion prionotus Hartley, Andrews & McHugh new species

Etymology. Greek for ‘‘jagged’’ or ‘‘serrate’’ referring to the saw-toothed edges of the pronotum.

Description. Length 1.10–1.25 mm. Width 0.35–0.40 mm. Body elongate, subparallel, uniformly orange to reddish brown; evenly setose, setae short; head narrower than pronotum by size of one eye facet, sides straight, narrowing slightly anteriorly; clypeus narrowing at 45u angle anterior to antennal insertions; head foveae small but distinct, narrow, elongate ovals, head setation even, setae long and decumbent; head punctation dense, surface rugose; eyes small and slightly prominent with 4 facets; tempora size of one eye facet; hind angles sharp, greater than 90u; clypeal fovea length of antennomere I, 0.6 times width of labrum; labrum anterior margin not emarginate; mandible apex sharply pointed with an apical tooth and 3 subapical serrations, prostheca long; antennae with a 3- segmented club; antennae reach hind angles of pronotum; antennomere I irregular, wider than long and widening greatly apically, II elongate oval, III–VIII small, submonilliform, IX–XI form club, IX globular, twice length of VIII, X larger than IX, wider than long, subrectangular, XI larger than X, subquadrate, length equals width.

Pronotum slightly wider anteriorly; anterior angles rounded, lateral margin distinctly serrate, straight sided or gently arcuate; lateral margin with,12 large tubercles each bearing a long decumbent seta; median 2/3 raised with short decumbent setae; pronotal foveae distinct, anterior pair narrow, transverse, nearly reaching lateral margin, posterior pair round; pronotal punctation even, irregular.

Elytra subparallel, lateral flange present on anterior 2/3; 6 striae; strial punctures large and touching one another; humeral angle rounded, scarcely lobed; strial interspaces 3 and 5 weakly carinate; interspaces 1, 3, 5, and lateral margin with erect setae, most recurved at the tip and not stout, other intervals with short decumbent setae; epipleuron complete, narrowing posteriorly.

Ventral surface evenly setose; submental fovea deep, length of antennomere II with 5 or 6 small punctures and scattered micropunctures; ventral head punctation sparse but even over entire head; gular punctation sparse but even; prosternum sparsely and irregularly punctate; mesosternum without sharp carinae; metasternum with single fovea between and posterior to each mesocoxa, a small, deep, arcuate fovea anterior to each metacoxa, and median surface without punctures; abdominal ventrite I with 2 large, distinct punctures at anterior corners of intercoxal process, a transverse, oval fovea posterior to each metacoxa, and median surface with a pair of single or geminate punctures situated below corners of intercoxal process, ventrites II–IV unmodified.

Material Examined. HOLOTYPE, USA: label data: ‘‘CALIF: Kings Co. 8 mi. SSW Avenal T23S-R16E-29 IV-17-1980 Andrews, Kuba, & Paddock F 80-11,’’ ‘‘berlesed from Neotoma nest among roots at base of oak’’ ( CDAE).

PARATYPES, USA, same data as holotype (3, CDAE) ; ‘‘CALIF: Kings Co., 8 mi. SSW Avenal , T23S-R16E-29 IV-17-, 1980 Andrews, Kuba, & Paddock F 80- 13,’’ ‘‘berlesed from Neotoma nest among roots at base of oak’’ on slide (1, CDAE) ; ‘‘CALIF: Kings Co., 8 mi. SSW Avenal , T23S-R16E-29 IV-17-, 1980 Andrews, Kuba, & Paddock F 80-11,’’ ‘‘berlesed from Neotoma nest among roots at base of oak’’ (6, CDAE) ; ‘‘CALIF: Kings Co., 8 mi. SSW Avenal , T23S-R16E- 29 IV-17-, 1980 Andrews, Kuba, & Paddock F 80-13,’’ ‘‘berlesed from Neotoma nest among roots at base of oak’’ (23, CDAE) .

Additional Material, ‘‘CALIF: Kings Co., 10 mi. SW Avenal, II-6-1980, T235- R16 E-29 3,1009, berlesed neotoma, nest A. Gilbert coll’’ (1, CDAE); ‘‘CALIF: Kings Co. 10 mi, S Avenal Sunflower, Valley 1,0009 I-9 to, II-6-80 pit trap in, Ribes-Oak A. Gilber’ ’ (1, CDAE) .

Remarks. The straight sided pronotum with large, distinct tubercles, elytral setation of short, erect setae recurved at the tip, and head with only decumbent setae distinguish this species. This species superficially resembles A. anasillos and A. hadromorphus from which it can be distinguished by its much shorter elytral setation and its lack of erect setae on the head. Akalyptoischion prionotus also resembles A. parechinos , but A. parechinos lacks punctures on the median surface of abdominal ventrite I.

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