Binburrum zapdos Hsiao and Pollock, 2021

Hsiao, Yun & Pollock, Darren A., 2021, Contribution to the knowledge of the endemic Australian genus Binburrum Pollock, 1995 (Coleoptera: Pyrochroidae: Pilipalpinae), with description of three new species, The Canadian Entomologist 153 (2), pp. 244-256 : 254-255

Binburrum zapdos Hsiao and Pollock , new species

ZooBank Registration Number: urn:lsid:zoobank.org:act:3AE66A1A-FF07-430A-B4B7-27A86565DDE5

Figures 1J , 2D , 3D , 6E–H , 8E–F .

Type material. Holotype male. Queensland: “ 17.06S 145.36E QLD / Mt. Haig GS1 1150m / 31 Jul-31 Aug. 1995 / L.Umback / Malaise trap ” ( ANIC).

Diagnosis. This new species closely resembles B. bifoveicollis ( Lea, 1917) and B. ruficollis ( Champion, 1895) in the overall colouration, with blackish head and elytra and orange pronotum ( Fig. 1B, E ), but can be easily recognised by the rounded lateral pronotal margins, without tubercles (usually with small, setigerous tubercles in B. ruficollis ), pronotal disc irregularly and relatively sparsely punctate, with medial region more glabrous (regularly and densely punctate in B. bifoveicollis and B. ruficollis ), elytral punctures smaller, with interpuncture distance subequal to puncture diameter (punctures larger, with interpuncture distance slightly shorter than puncture diameter in B. ruficollis ), genitalic tegmen with apicale slightly longer than basale (apicale and basale subequal in length in B. ruficollis ), distinctly narrowed apicad and moderately cleft apically in dorsal view and broad, straight-sided and distinctly narrowed apicad in lateral view ( Fig. 6E–H ) (slightly narrowed apicad and moderately cleft apically in dorsal view and broad, straight-sided and distinctly narrowed apicad in lateral view in B. bifoveicollis ; Fig. 6A–B ) and (slightly narrowed apicad and deeply cleft apically in dorsal view and broad, round-sided and slightly narrowed apicad in lateral view in B. ruficollis ; Fig. 6C–D ), accessory lobes of tegmen largely extended beyond apicale (slightly extended beyond apicale in B. bifoveicollis ), median lobe more elongate ( Fig. 8E–F ) (stouter in B. bifoveicollis and B. ruficollis ; Fig. 8A–D ).

Description. Measurements. Length: 4.0 mm; width: 1.2 mm.

Colour ( Fig. 1J ). Head black, with clypeus orange; antennae with scape, pedicel and antennomere 1 orange, antennomere 4–5 dark orange, blackish externally, remaining antennomeres dark brown to black; pronotum yellow to orange; meso- and metaventrites and elytra black; scutellum orange; abdomen dark brown to black; legs orange; surface covered with yellowish setae.

Head ( Fig. 2D ). Eyes lateral, small, ratio of eye diameter to interocular space 1.0:3.5. Antennae short, extended to elytral midlength. Punctures large, umbilicate; setae short; frons evenly convex; antennal setae longer than setae on head, recurved apically.

Pronotum ( Fig. 3D ). Slightly narrower than head and distinctly narrower than width across elytral humeri; pronotum wider than long; lateral pronotal margins rounded; margins smooth, without tubercles; median line absent; depressions indistinct, shallow, anteriorly divergent, situated near midlength; punctures moderately deep, umbilicate; punctures irregularly distributed, sparsely distributed anteriorly and medially; setae longer than setae on head.

Elytra. Punctures relatively large, rounded, smaller towards elytral apex, with interpuncture distance subequal to puncture diameter; epipleura narrowed abruptly at ventrite 3 or 4, not present to elytral apex; elytra flat dorsally, sloped towards apex only.

Male genitalia. Apicale slightly longer than basale, moderately cleft apically, distinctly narrowed apicad in dorsal view and broad, straight-sided and distinctly narrowed apicad in lateral view; accessory lobes very narrow, inserted together in proximal one-third of apicale, largely extended beyond apicale ( Figs. 6E–H ); median lobe distinctly narrowed apicad, spatulate distally ( Figs. 8E–F ).

Etymology. The specific epithet is named after the Zapdos in the Japanese videogame Pokémon , one of the three legendary fictional birds, referring to the presumed rareness of this species that has only one known specimen. The specific name is treated as a noun in apposition.

Distribution. Australia: northeastern Queensland.

Figures

Fig. 1. Habitus of Binburrum, dorsal view. A, B. angusticollis Pollock, 1995, holotype; B, B. bifoveicollis (Lea, 1917); C, B. concavifrons Pollock, 1995, holotype; D, B. ephippiatum (Wilson, 1926), lectotype; E, B. ruficollis (Champion, 1895); B. articuno new species: F, holotype; G, paratype; H, B. moltres new species, holotype; I, B. sp., presumably colour variation of B. moltres new species; J, B. zapdos new species, holotype. Scale bar = 1.0 mm.

Fig. 2. Head of Binburrum new species, dorsal view. A, B. articuno new species: A, holotype and B, paratype; C, B. moltres new species, holotype; D, B. zapdos new species, holotype. Scale bar = 0.2 mm.

Fig. 3. Pronotum of Binburrum new species, dorsal view. Binburrum articuno new species: A, holotype and B, paratype; C, B. moltres new species, holotype; D, B. zapdos new species, holotype. Scale bar = 0.2 mm.

Fig. 6. Genitalic tegmen of Binburrum zapdos new species, in comparison with B. bifoveicollis (Lea, 1917) and B. ruficollis (Champion, 1895). Binburrum bifoveicollis (Lea, 1917): A, dorsal view; B, lateral view; B. ruficollis (Champion, 1895): C, dorsal view and D, lateral view; B. zapdos new species, holotype: E, dorsal view, F, lateral view, and hand drawings G, dorsal view and H, lateral view. Scale bar = 0.5 mm.

Fig. 8. Comparison of median lobes amongst Binburrum bifoveicollis (Lea, 1917), B. ruficollis (Champion, 1895), and B. zapdos new species. Binburrum bifoveicollis (Lea, 1917): A, ventral view and B, lateral view; B. ruficollis (Champion, 1895): C, ventral view and D, lateral view; B. zapdos new species, holotype: E, ventral view and F, lateral view. Scale bar = 0.5 mm.