Phylacastus rhodesianus Koch

Lumen, Ryan & Kaminski, Marcin Jan, 2023, Taxonomic revision of the genus Phylacastus Fairmaire (Tenebrionidae, Eurynotina): shortfalls of anatomical nomenclature with notes on aedeagal homology, ZooKeys 1138, pp. 1-27 : 1

Phylacastus rhodesianus Koch

Figs 1D , 2C, D , 3C , 4C

Phylacastus rhodesianus Koch, 1954a: 287. Kamiński 2016: 245.

Material examined

(data represents single specimens unless otherwise noted). Holotype (TMNH): "Marandella Mashld XI.97 GKMarshall; Holotype No: 1877 Phylacastus rhodesianus KOCH; Phylacastus rhodesianus Koch DET.C.KOCH; Phylacastus rhodesianus Koch."

Additional material examined

(MNHN). " 9.VI.1970 Vumba SUD RHODESIE Cl. Besnard leg. 8.VI.1970 Inyanga SUD RHODESIE Cl. Besnard leg." (10 specimens) .

Redescription.

Length 6-8 mm. Head: punctures separated by ≤ 1 diameter. Mentum midportion broad, concealing lateral wings, midportion without distinct median carina. Prothorax: pronotum punctate, punctures closely spaced, separated by ~1 diameter. Hypomeron very lightly textured, without clear punctation. Prosternal process produced between forecoxae. Pterothorax: elytra width about equal to pronotal width. Elytral striae and intervals punctate; striae impressed. Interval punctures fine, closely spaced (~1 diameter), distinctly smaller than strial punctures. Elytral tubercles present on apical declivity. Abdomen: ventrite V sulcus narrowly separated from apical border. Terminalia: male: parameres converging apically, fused basally with deep and wide opening at apex exposing median lobe (Fig. 4C ). Female: ovipositor slightly elongate (ratio of ovipositor coxites I-IV to paraprocts <1:1). Bursa copulatrix bilobate, accessory gland present near-to spermatheca, accessory pouch absent.

Distribution.

Zimbabwe.

Figures

Figure 1. Dorsal habitus of Phylacastus species A Phylacastus ancoralium sp. nov. holotype B Phylacastus makskacymirowi sp. nov. C Phylacastus crypticoides D Phylacastus rhodesianus E Phylacastus striolatus lectotype. Scale bars: 1 mm.

Figure 2. Phylacastus lateral aspect photographs and close-up of apical elytral tubercles and striae A Phylacastus ancoralium lateral angle B P. ancoralium close-up of elytra apical declivity C P. rhodesianus lateral angle D P. rhodesianus close-up of elytra apical declivity E P. striolatus lateral angle F P. striolatus close-up of elytra apical declivity.

Figure 3. Diagnostic features of Phylacastus species A-C mentum (Median keel red, middle portion and lateral wings blue and green respectively) D-E prosternal process F-G abdominal ventrite V A, D, F Phylacastus crypticoides B P. makskacymirowi C P. rhodesianus E P. ancoralium G P. striolatus. Scale bars: 0.1 mm

Figure 4. Phylacastus species spp. aedeagi A-D aedeagus dorsal view E, F aedeagus Ventral view A, H Phylacastus striolatus B, G P. ancoralium (ancorae highlighted blue) C P. rhodesianus E P. crypticoides D, F P. makskacymirowi (subapical sutures highlighted blue). Median lobes highlighted green. Scale bars: 0.2 mm.