Eurynotus alticola Koch

Lumen, Ryan & Kamdńskd, Marcdn J., 2024, evdsdon of the darkldng beetle genus Eurynotus (Blaptdnae: Platynotdnd % and new records of ovovdvdpary dn ºenebrdonddae, Zoological Journal of the Linnean Society 201 (201), pp. 358-386 : 380

1. Eurynotus alticola Koch ( Fig. 3A )

Eurynotus ( Eurynotus) alticola Koch 1955: 424 .– Kamiński 2016: 236.

Diagnosis: While no additional specimens outside of Koch’s ma - terial were found as of this revision, we feel that Koch’s (1955) description is sufficient. Here we outline important charac - teristics from Koch’s description/diagnosis and provide some additional characters to supplement his description. Eurynotus alticola most resembles Koch’s (1955) Eurynotus rudebecki (synonymized here with E. asperatus ). Upon the investigation presented here, an affinity to E. capensis is also noted. Eurynotus alticola is differentiated by the presence of larger, setigerous punctures on abdominal ventrite V (absent in E. asperatus ) and dark or black setae on the tarsi (golden in E. capensis ). Further, E. capensis has starkly modified hind tibiae in the males, and a modification to the lateral edges of abdominal ventrite V in both sexes (apparently absent in both E. asperatus and E. alticola ). Finally, E. alticola is the only species devoid of tubercles on the elytra (including the apical declivity).

Supplementary description (see: Koch 1955): Head: Punctures widely spaced, separated by ≤1 puncture diameter. Mentum without apical notch. Eye with impressed sulcus around margin. Prothorax: Pronotum finely punctate, punctures separated by ≥1 puncture diameter. Hypomeron mostly smooth (at most with fine wrinkling), finely and shallowly punctate. Pterothorax: Elytra without tuberculation. Elytral interval X terminating be - tween hind coxae and apex of elytra. Epipleuron subequal to width of elytral intervals 9 + 10. Elytral intervals obscured by epipleuron in ventral view. Abdomen: Punctate. Abdominal ventrite V finely punctate, punctures separated by ≥1 puncture diameter with larger, setigerous punctures intermixed; with mar - gination running along distal edge. Legs: Male and female legs unmodified. Tarsi with dark or black setae. Males: Pro/meso tarsi robust with large, ventral, tomentose pads. Terminalia: No

specimens were available for dissection (however, for ventral diagram of male aedeagus, see: Koch 1955: fig. 3).

Material examined: Lectotype, here designated (TMNH): ‘7 Weeks Poort Berg Ladismith, Cape. 5500–7000 ft.; Paratypus EURYNOTUS alticola sp.n. C.Koch; Paratype No:1246 Eurynotus alticola KOCH’.

Note: As the original description lacks information defining a specific specimen as the name -bearing individual, one from the presumed syntype series is here designated as the lectotype to fix the taxonomic status of the species. No additional spe - cimens aside from the type designated here were available for examination.

Distribution: South Africa (Fig. 10).

Figures

Figure 3. Eurynotus sens.nov.species. A, Eurynotus alticola Koch Lectotype; B, E.asperatus Mulsant and Rey Lectotype; C, E. rudebecki Koch syn. nov.of E. asperatus Holotype; D, E.barbosai Koch Holotype; E, E. capensis (Fabricius) Lectotype; F, E.constrictus Koch Lectotype; G, E. graniderma Koch Holotype; H, E. privisolum sp.nov.Holotype; I, E. sulcimargo Koch Lectotype; J, E. thermarum Koch Holotype.