Koenikea Wolcott 1900

Abstract

Key to the Australian Koenikea species 1. Without apophyses associated with the dorsal shield...................................................... 2 - With apophyses associated with dorsal shield.............................................. Koenikea sorpresa 2 Five pairs of glandularia on dorsal shield............................................................... 3 - Six pairs of glandularia on dorsal shield................................................................ 7 3 I-leg-6 <150 µm.................................................................................. 4 - I-leg-6> 200 µm.................................................................................. 5 4 All dorsal glandularia lying in the periphery of the dorsal shield...................... Koenikea tuberculata sp. nov. - Dgl-4 distanced from periphery of dorsal shield........................................... Koenikea lewisensis 5 All dorsal glandularia lying in the periphery of the dorsal shield...................... Koenikea caniaensis sp. nov. - One pair distance from periphery of dorsal shield......................................................... 6 6 Peg-like seta of P-4 located on a tubercle................................................ Koenikea australica - Peg-like seta of P-4 located directly on segment.................................. Koenikea decapora Cook, 1986 7 (2) Dorsal shield with one pair of glandularia placed close together near middle of shield, the other five pairs peripheral.................................................................................... Koenikea piota Cook - Dorsal shield not with one pair very close together near middle of shield...................................... 8 8 Grooved or fluted setae (“rillborsten”) of first and second legs relatively short (rillborsten of 1-leg-4 shorter than half of segment)................................................................. Koenikea curtiseta Cook, 1986 - Grooved or fluted setae longer, those of 1-leg-4 longer than half of segment.................................... 9 9 Glandularia 3, 4 and 5 more or less in a line............................................................ 10 - Glandularia 3, 4 and 5 not in a line, but glandularia 3 and 4 much closer to lateral margin than glandularium 4....... 11 10 Small species, both male and female <500 µm, peg-like seta of P-4 inserted well before distal end of segment............................................................................................ Koenikea jacunda - Larger species, both male and female> 600 µm, peg-like seta of P-4 inserted near distal end...................... 11 11 Peg-like seta of P-4 inserted on a long tubercle (peg-like seta shorter than its tubercle)............... Koenikea lemba - Peg-like seta of P-4 inserted on a short tubercle (peg-like seta longer than its tubercle).... Koenikea voloma Cook, 1986 12 Palp very slender........................................................ Koenikea gracilipalpis Smit, 2004 - Palp not very slender.............................................................................. 13 13 Coxal setae very long, especially of first coxal plates (anterior coxal setae extending beyond suture lines of first and coxal plates).......................................................................................... 14 - Coxal setae not very long........................................................................... 15 14 Idiosoma large, ventrally 623–881 in male, 821–1003 in female, Dgl-5 distanced from each other and close to Dgl-3 and Dgl-4............................................................................... Koenikea crinita - Idiosoma smaller, 454 in male and 526–535 in female, Dgl-5 much closer to each other and distanced from Dgl-3 and Dgl-4....................................................................... Koenikea longiseta Smit, 2021 15 Glandularia 3 and 4 of dorsal shield only slightly closer to each other on their respective sides than glandularia 5 and 6 are to each other; projections associated with IV-leg insertions hook-like............................. Koenikea rutala - Glandularia 3 and 4 much closer to each other on their respective sides than 5 and 6 are to each other; projections associated with IV-leg insertions not hook-like.................................................................. 16 16 Anterior margin of genital field with numerous small setae............................ Koenikea setosa Smit, 2004 - Anterior margin of genital field without numerous small setae.............................................. 17 17 Apodemes of first coxal plates very long, reaching to or beyond middle of fourth coxal plates.................... 18 - Apodemes of first coxal plates less long, reaching slightly beyond suture line of third and fourth coxal plates........ 19 18 Apodemes of first coxal plates reaching to middle of fourth coxal plates; Cxgl-2 lying halfway posterior margin of Cx-IV and genital field.............................................................. Koenikea yorkensis sp. nov. - Apodemes of first coxal plates reaching to posterior margin of Cx-IV; Cxgl-2 lying close to posterior margin of Cx-IV.......................................................................... Koenikea circularis Smit, 2004 19 (17) Very slender species, length/width ratio of dorsal shield 1.47.......................... Koenikea rodosa Cook, 1986 - Not as slender, length/width ratio of dorsal shield less than 1.25............................................ 20 20 Posterior margin of Cx-IV reversed heart-shaped................................. Koenikea brachypalpis sp. nov. - Posterior margin of Cx-IV not heart-shaped but straight................................................... 21 21 Genital field small, with fewer than 10 pairs of acetabula.................................................. 22 - Genital field larger, with more than 10 pairs of acetabula.................................................. 25 22 Genital field bulging in male, swimming setae of male shortened; genital field in both sexes with an enlarged glandularium............................................................... Koenikea rubipes Smit, 2004 - Genital field in male various, swimming setae longer; genital field without an enlarged glandularium.............. 23 23 Claw of male IV-leg-6 enlarged, apodemes of first coxal plates extending to suture line of third and fourth coxal plates; dorsal shield not dome-shaped.......................................... Koenikea pauciacetabulata Smit, 2004 - Claw of male IV-leg-6 not enlarged, apodemes of first coxal plates extending beyond suture line of third and fourth coxal plates; dorsal shield dome-shaped.................................................................... 24 24 Male gonopore bulging, relatively wide; pair of Dgl-6 relative well distanced.......... Koenikea saponaria Smit, 2007 - Male gonopore not bulging, slit-like; pair of Dgl-6 relatively close to each other........ Koenikea interstitialis sp. nov. 25(21) Claw of IV-leg-6 large, in male 60-70 µm in width (= from tip of claw to base), in female 38–42 µm in width........................................................................................ Koenikea pseudodistans - Claw of IV-leg-6 smaller........................................................................... 26 26 Cxgl-2 closer to posterior margin of Cx-IV or halfway posterior margin of Cx-IV and genital field................. 27 - Cxgl-2 closer to genital field........................................................................ 28 27 Ventral seta P-4 on a short tubercle, P-4 slender.............................................. Koenikea timmsi - Ventral seta of P-4 not on a tubercle, P-4 stocky.................................. Koenikea inconspicua sp. nov. 28 (26) IV-leg- 6 in male <180 µm, <170 µm in female, small species (L male 462–545, L female 518–745.................................................................................................. Koenikea branacha - IV-leg- 6 in male> 190 µm, in female> 200 µm, large species (L male 567–632, L female 737–879..... Koenikea distans

Authors 2

1. Harry Smit Aachen Naturalis Biodiversity Center

   Naturalis Biodiversity Center

   Affiliation as printed

   Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, the Netherlands

2. Vladimir Pešić

   University of Montenegro

   Affiliation as printed

   Department of Biology, University of Montenegro, Cetinjski put b. b., 81000 Podgorica, Montenegro