Scaphobaeocera, Csiki, 1909

Ivan Löbl, 2017, New species and records of Scaphobaeocera CSIKI from New Guinea (Coleoptera: Staphylinidae: Scaphidiinae), Mitteilungen der Münchner Entomologischen Gesellschaft 107, pp. 33-41 : 34

Key to the New Guinean species of Scaphobaeocera

1 Antennomere VII more than 5 times as long as wide and longer than antennomeres III to VI combined .. ................................................................................................................................................................. 2

‒ Antennomere VII about 2 or 4 times as long as wide and much shorter than antennomeres V and VI combined ................................................................................................................................................ 3

2 Metaventrite with median stria .......................................................................................... S. balkei sp. n.

‒ Metaventrite lacking median stria ............................................................................................. species A

3 Antennomere XI conspicuously long, about as long as or longer than antennomeres IX and X combined ................................................................................................................................................................. 4

‒ Antennomere XI not conspicuously long, much shorter than antennomeres IX and X combined .......... 6

4 Elytra bearing strigulate microsculpture and iridescent .......................................................................... 5

‒ Elytra not microsculptured and not iridescent ................................................................. S. gemina sp. n.

5 Lateral parts of metaventrite bearing microsculpture ................................................. S. antennalis LÖBL

‒ Lateral parts of metaventrite lacking microsculpture ....................................................... S. remota LÖBL

6 Elytra with distinct bicolorous pattern ................................................................................................... 7

‒ Elytra uniformly reddish-brown to blackish, or somewhat darkened, or becoming lighter near apical mar- gins ........................................................................................................................................................ 8

7 Elytra light brown, darkened along suture, lateral margins and near apical margins. Metaventrite micros- culptured ........................................................................................................................... S. ornata (PIC)

‒ Elytra light reddish-brown, each with dark spot in centre and darkened near apices ........ S. notata sp. n.

8 Lateral parts of metaventrite conspicuously punctate, with punctures as large as punctures margining submesocoxal lines and much larger than pronotal punctures. Elytral punctation notably coarser than pronotal punctation ....................................................................................................... S. punctata sp. n.

‒ Lateral parts of metaventrite very finely punctate, with punctures smaller that punctures margining sub- mesocoxal and about as minute as pronotal punctures ........................................................................... 9

9 Minute species, body length 0.80 mm. Basolateral punctures on sternite 1 elongate ........... S. ptiliformis LÖBL

‒ Species 0.95-1.35 mm long. Basolateral puncture on sternite 1 not elongate ....................................... 10

10 Antennomere VIII conspicuously small, about as long as third of antennomere VII, antennomere VII about as long as XI ................................................................................................................... species B

‒ Antennomere VIII not conspicuously small, longer than half of antennomere VII, antennomeres VII much shorter than XI ........................................................................................................................... 11

11 Body 0.95-1.35 mm long. Antennomeres V slightly longer than VI. Parameres not sinuate .................... ....................................................................................................................................... S. papuana CSIKI

‒ Body 1.40-1.45 mm long. Antennomeres V much longer than VI. Parameres sinuate ............................. ..................................................................................................................................... S. lycocorax sp. n.