Aenigmoronia, Lawrence, 2019

Lawrence, John F., 2019, Australian Nitidulinae: general review with descriptions of new genera and species (Coleoptera: Nitidulidae), Zootaxa 4657 (2), pp. 261-290 : 267

publication ID

https://doi.org/ 10.11646/zootaxa.4657.2.3

publication LSID

lsid:zoobank.org:pub:0B82344A-CD64-4DC0-B029-4453A1BADB9D

DOI

https://doi.org/10.5281/zenodo.3800338

persistent identifier

https://treatment.plazi.org/id/F4375F2C-B604-836D-27E2-D6C0FDD1FDCB

treatment provided by

Valdenar (2020-04-27 14:16:10, last updated 2024-11-26 07:34:43)

scientific name

Aenigmoronia
status

gen. nov.

Aenigmoronia , gen. nov.

Type species: Aenigmoronia echinodes , sp. nov.

Diagnosis. This monotypic genus is similar to several other nitiduline genera exhibiting a type of dual and seriate elytral punctation and vestiture in which 1) megasetae are erect or suberect, more or less thickened, apically blunt and bristle-like or brush-like, and well removed from one another within a longitudinal row, and 2) microsetae form two or more, sometimes irregular rows, each associated with a circular to ovoid pit. Most genera in this group are further distinguished from most nitidulines in the abrupt depression of the anterior metaventrital lobe to meet the edge of the mesoventrite, which is on a lower plane. Included are Atarphia Reitter, 1884 ; Hebasculinus Kirejtshuk, 1992 ; Hebascus Erichson, 1843 , Hyleopocadius Jelínek, 1977 ; Kryzhanovskiella aequilibris ( Kirejtshuk, 1986) ; Kryzhanovskiella pecki ( Kirejtshuk, 1986) ; Lordyrodes Reitter, 1884; Niliodes Murray, 1868 ; Physoronia Reitter, 1884 ; “ Physoronia intermedia Kirejtshuk, 2006a , Pocadiodes Ganglbauer, 1899 and Pocadites Reitter, 1884 . In some species, the megasetal rows have become highly irregular and often incomplete, sometimes due to the presence of elytral tubercles. Note that the genera Lordyrodes and Pocadiodes are considered by Kirejtshuk (2006a) to be synonymous with Physoronia . To account for some variable characters, the two species of Kryzhanovskiella are treated separately and Physoronia intermedia is treated separately from other described Physoronia . Aenigmoronia differs from one or more of these taxa in the following respects: 1) vertexal line replaced by a transverse band of linear microcells ( Fig. 34 View FIGURES 31–46 ) (a complete carina in Atarphia , Hebasculinus , Niliodes , Physoronia , Pocadiodes and Pocadites or no carina in Hebascus and Lordyrodes); 2) labral apex simple and truncate (weakly to strongly emarginate in Atarphia , Hebascus , Hyleopocadius and Physoronia ; with median notch in Hebasculinus , P. intermedius , Pocadiodes , and Pocadites ); 3) mandible bidentate without serrate lobe (unidentate in Hebascus and Hyleopocadius ; bidentate with at least one serrate lobe in Hebasculinus , K. aequilibris , Physoronia and Pocadites ); 4) apical labial palpomere obliquely emarginate with two separated sensory areas ( Fig. 40 View FIGURES 31–46 ) (unique to Aenigmoronia ); 5) submentum simple, without longitudinal grooves (with at least weak longitudinal paired grooves in Atarphia , Hebasculinus , Hyleopocadius , P. intermedius , Physoronia and Pocadiodes ); 6) posterior pronotal angles slightly acute (right to obtuse in all but K. aequilibris and Niliodes ); 7) posterior edge of pronotum with broadly rounded to subtruncate prescutellar lobe (absent in Hyleopocadius , P. intermedius , Niliodes and Pocadiodes ); 8) prosternal process distinctly narrower than mid length of procoxal cavity (at least as wide in Atarphia , Hebasculinus , K. pecki , Lordyrodes, Niliodes and Pocadiodes ); 9) sides of elytra narrowly explanate (broadly explanate in K. pecki , Niliodes , and Physoronia ); 10) megasetae thick and brush-like (present only in some Kryzhanovskiella ); 11) mesoventrite with short median carina (carina longer in Hebascus , Hyleopocadius , Lordyrodes, Niliodes , Pocadiodes ; no carina in Atarphia , Hebasculinus , K. pecki , Physoronia , and Pocadites ); 12) axillary spaces moderately large (small to very small in Hebascus , Hyleopocadius , Lordyrodes, Niliodes , Physoronia and Pocadiodes ); 13) distance between mesocoxae equal to or slighty greater than that between procoxae (distinctly greater in Niliodes , Physoronia , Pocadiodes and Pocadites ; distinctly less in Hebascus , Kryzhanovskiella and Lordyrodes); 14) protibial ridge present in male ( Fig. 26 View FIGURES 13–30 , compare with Fig. 29 View FIGURES 13–30 ) (absent in Hebascus , Hyleopocadius , K. pecki , Physoronia , Pocadiodes ); 15) no basal tarsomeres expanded (basal protarsomeres expanded in Atarphia , Hebascus and Pocadites ; all basal tarsomeres expanded in Niliodes ); 16) abdominal intercoxal process truncate (broadly rounded in Hebascus , Hyleopocadius and Physoronia ); 17) penis almost as long as to longer than tegmen (distinctly shorter, except in Kryzhanovskiella ); 18) genital capsule with subapical pit ( Fig. 55 View FIGURES 47–62 ) (absent in all but K. aequilibris and Physoronia ); 19) gonocoxites contiguous ( Figs 63, 77 View FIGURES 63–78 ) (at least apically separated in Hyleopocadius , Lordyrodes, Physoronia and Pocadiodes ); 20) gonocoxites without lateral recurved teeth (teeth present in Hebasculinus , Hebascus , Kryzhanovskiella , Lordyrodes, Physoronia and Pocadiodes ); 21) gonostyli reduced, shorter than wide and lateral ( Fig. 63 View FIGURES 63–78 ) (well-developed and parallel-sided in Atarphia , consisting of a few setae only in Hyleopocadius , K. aequilibris and P. intermedius ; absent in Hebasculinus , Hebascus , K. pecki , Lordyrodes and Physoronia ); Aenigmoronia appears to be most similar to Kryzhanovskiella species, which are also much smaller (2.10–2.65 mm versus 3.50–4.2 mm) with a shorter and broader pronotum and combined elytra.

Jelinek, J. (1977) Revision of South American species of the genus Pocadius Er. with description of a new genus (Coleoptera, Nitidulidae). Acta Entomologica Musei Nationalis Pragae, 39, 29 - 44.

Kirejtshuk, A. G. (1986) New genera and species of nitidulid beetles (Coleoptera, Nitidulidae) from the Australian region. I. Entomologicheskoye Obozreniye, 65, 559 - 573. [in Russian; translation in Entomological Review, Washington, 66 (1), 147 - 160, 1987]

Kirejtshuk, A. G. (2006 a) New species of the genus Physoronia from the Far East and Kryzhanovskiella gen. n. from Australia, with taxonomic notes on the Pocadius complex (Coleoptera: Nitidulidae). Annales Historico-Naturales Musei Nationalis Hungarici, 98, 121 - 132.

Reitter, E. (1884) Die Nitiduliden Japans. Wiener Entomologische Zeitung, 3 (9), 259 - 272. https: // doi. org / 10.5962 / bhl. part. 13855

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FIGURES 31–46. Morphological details: 31, Austronitidula multimaculata sp. nov., antennal club. 32–33, clypeus and labrum: 32, Perilopsis flava (Reitter); 33, Testudoraea flava Kirejtshuk. 34–35, junction of vertex and occiput: 34, Aenigmoronia echinodes sp. nov.; 35, Australycra obscura (Blackburn). 36–38, labrum-epipharynx: 36, Austronitidula multimaculata sp. nov.; 37, Cychramus slendidus sp. nov.; 38, Cychramus picticollis Lea. 39, Austronitidula multimaculata sp. nov., left side of head, dorsal; 40, Aenigmoronia echinodes sp. nov., apex of labial palp; 41–42, mentum: 41, Cychramus splendidus sp. nov.; Cychramus picticollis Lea. 43–46, portion of elytral surface: 43, Australycra obscura (Blackburn); 44, Australycra similis sp. nov.; 45, Austronitidula multimaculata sp. nov.; 46, Aenigmoronia echinodes sp. nov.

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FIGURES 13–30. Morphological details: 13–19, portion of elytral surface: 13, Aenigmoronia echinodes sp. nov. (low); 14–15, Temnelytron nigrum sp. nov. (high): 14, showing microsetae; 15, showing megasetae. 16–17, Thalycrodes pulchrum Blackburn: 16, high; 17, low. 18, Temnelytron nigrum sp. nov. (low). 19, Austronitidula multimaculata sp. nov. (high). 20–21, protibial apex and tarsus: 20, Testudoraea flava Kirejtshuk; 21, Perilopsis flava (Reitter). 22–23, portion of elytral surface: 22, Perilopsis flava (Reitter), 23, Testudoraea flava Kirejtshuk. 24, Aenigmoronia echinodes sp. nov., elytral tuft-like megaseta; 25–30, protibial apex: 25, Austronitidula multimaculata sp. nov., male; 26, Aenigmoronia echinodes sp. nov., male; 27, Pocadius kirejtshuki Cline, male; 28, Thalycrodes pulchrum Blackburn, male; 29, Aenigmoronia echinodes sp. nov., female; 30, Temnelytron nigrum sp. nov., male.

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FIGURES 47–62. Morphological details: 47–49, Lasiodites howensis sp. nov., female, portions of reduced hind wing: 47, apex; 48, subapex; 49, subbase. 50. Perilopsis flava (Reitter), central portion of abdominal ventrite 5 in male. 51–52, median plate of larval abdominal tergum: 51, Perilopsis flava (Reitter); 52, Testudoraea flava Kirejtshuk. 53–54, left side of first abdominal tergum: 53, Testudoraea flava Kirejtshuk; 54, Perilopsis flava (Reitter). 55–57, apex of male genital capsule (tergite VIII), dorsal: 55, Aenigmoronia echinodes, sp. nov.; 56, Austronitidula multimaculata sp. nov.; 57, Temnelytron nigrum sp. nov. 58–62, ventral plate of abdominal segment IX: 58, Aenigmoronia echinodes sp. nov.; 59, Australycra obscura (Blackburn); 60, Australycra similis sp. nov.; 61, Austronitidula multimaculata sp. nov.; 62, Temnelytron nigrum sp. nov.

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FIGURES 63–78. Ovipositors: 63–70, gonocoxital apices: 63, Aenigmoronia echinodes sp. nov.; 64, Australycra obscura (Blackburn); 65, Australycra similis sp. nov.; 66, Austronitidula multimaculata sp. nov.; 67, Cychramus splendidus sp. nov.; 68, Hebasculinus japonus (Reitter); 69, Kryzhanovskiella aequilibris (Kirejtshuk); 70, Lasiodites howensis sp. nov. 71, Cychramus splendidus sp. nov., paraproctal apices and gonocoxital bases. 72–73, gonocoxital apices: 72, Temnelytron nigrum sp. nov.; 73, Pocadites dilatimanus (Reitter). 74, Kryzhanovskiella aequilibris (Kirejtshuk), gonocoxital bases. 75, Cychramus picticollis Lea, paraproctal apices and gonocoxites. 76, Lasiodites howensis sp. nov., paraproctal apices and gonocoxital bases. 77, Aenigmoronia echinodes sp. nov., paraproctal apices and gonocoxital bases. 78, Kryzhanovskiella pecki (Kirejtshuk), gonocoxites.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Nitidulidae

Tribe

Nitidulini