Baeocera ERICHSON 1845
Creators: name: Löbl, Ivan
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Baeocera

description: 4. Key to the Baeocera species of the People’s Republic of China
1 Lateral parts of metaventrite impunctate, or very finely and sparsely punctate...................2
- Lateral parts of metaventrite coarsely, usually densely punctate, or at least with several conspicuous, coarse punctures...........................................................................................14
2 Elytra with basal striae interrupted, not joined to lateral striae. Exposed part of scutellum large ....................................................................................................................3
- Elytral with basal striae entire, joined to lateral striae. Scutellum concealed or minute, except in B. breveapicalis ...................................................................................................6
3 Apical part of median lobe large, not overlapped, about as long as basal bulb. Male metatibiae each with subapical denticle ........................................ B. satana NAKANE, 1963
- Apical part of median lobe small, to part or entirely overlapped, much shorter than basal bulb. Male metatibiae lacking denticles .....................................................................4
4 Aedeagus with parameres simple, hook-like and curved at apices ....... B. gilloghyi LÖBL, 1973
- Aedeagus with parameres lobed, not hook-like at apices ....................................................5
5 Left parameres with small dorsal lobe and ventrally inflexed apex; right parameres lobed ventrally........................................................................... B. yunnanensis LÖBL, 1999
- Left parameres with large dorsal lobe and hardly inflexed apex; right parameres not lobed............................................................................................ B. pubiventris LÖBL, 1990
6 Antennomere VI short and wide, about 2 times as long as wide and as long as half of antennomere VII..................................................................................................................7
- Antennomere VI long and narrow, about 3 to 5 times as longs as wide, slightly shorter than antennomere VII..........................................................................................................8
7 Aedeagus with outer margin of left paramere sinuate and inner lobe subtriangular.............. ................................................................................................. B. breveapicalis (PIC, 1926)
- Aedeagus with outer margin of left paramere convexly rounded and inner lobe blunt ......... ....................................................................................................... B. takizawai LÖBL, 1984
8 Aedeagus with parameres strongly expanded apico-dorsally to form large, strongly sclerotized lobes................................................................................. B. kubani LÖBL, 1999
- Aedeagus with parameres not lobed, or each with small subapical lobe .............................9
9 Aedeagus with apices of parameres distinctly widened (dorsal view)................................... .................................................................................................... B. huanshana LÖBL, 1999
- Aedeagus with apices of parameres not or hardly widened (dorsal view).........................10
10 Aedeagus lacking strongly sclerotized guide-sclerite, parameres slightly shorter than median lobe ................................................................................ B. xichanagna LÖBL, 1999
- Aedeagus lacking with strongly sclerotized guide-sclerite, parameres much shorter than median lobe .......................................................................................................................11
11 Aedeagus with guide-sclerite narrow, angulate basally...................... B. callida LÖBL, 1986
- Aedeagus with guide-sclerite robust, not angulate basally................................................12
12 Aedeagus with guide-sclerite tapering apicad ........................................ B. freyi LÖBL, 1966
- Aedeagus with guide-sclerite not tapering apicad .............................................................13
13 Aedeagus with guide-sclerite straight, becoming stouter apicad........ B. cooteri LÖBL, 1999
- Aedeagus with guide-sclerite abruptly curved in middle, widened subapically, acute at tip ................................................................................................. B. hammondi LÖBL, 1984
14 Elytra with sutural striae shortened, starting well behind level of scutellar tip, far from elytral base ........................................................................................................................15
- Elytra with sutural striae starting at elytral base, usually curved along pronotal lobe and forming basal striae ...........................................................................................................16
15 Pronotal punctation coarse and dense, centre of metaventrite with mesal row of coarse punctures and narrow impunctate admesal areas................................ B. karenovicsi nov.sp.
- Pronotal punctation very fine and sparse, hardly visible, metaventrite lacking mesal row of coarse punctures....................................................................... B. proclinata nov.sp.
16 Elytra with basal striae widely separated from lateral striae .............................................17
- Elytra with basal striae entire, joined to lateral striae........................................................19
17 Elytral punctation coarse anterior mid-length, very fine posterior mid-length or in apical thirds. Aedeagus with notched parameres...............................................................18
- Elytral punctation coarse on entire discal surfaces. Aedeagus with straight, not notched parameres .................................................................................................. B. repleta nov.sp.
18 Internal sac of aedeagus bearing tuft of spines.................................. B. franzi (LÖBL, 1973) Internal sac of aedeagus lacking tuft of spines .......................... B. proseminata LÖBL, 2013
19 Pronotal and elytral punctation similar, very fine..............................................................20
- Pronotal punctation very fine, elytral punctation in part or entirely coarse .......................21
20 Aedeagus with flagellum curved and thickened basally. Lateroposterior part of metaventrite coarsely punctate ................................................... B. sordidoides LÖBL, 1992
- Aedeagus with flagellum almost straight in dorsal view, not thicken basally. Lateroposterior part of metaventrite very finely punctate .................. B. coalita LÖBL, 2013
21 Metanepisterna separated from metaventrite by distinct sutures ........................................... ............................................................................................... B. serendibense (LÖBL, 1971)
- Metanepisterna fused with metaventrite............................................................................22
22 Punctation coarse on most of basal half to two thirds of elytral disc, apical third to half of elytral disc very finely punctate, appearing impunctate ................................................23
- Elytra entirely or nearly entirely coarsely punctate ...........................................................24
23 Parameres narrow, not folded apically ............................................... B. erroris LÖBL, 1990
- Parameres wide, folded apically................................................ B. pseudinculta LÖBL, 1990
24 Ventrite 1 very finely punctate posterior basal puncture row, appearing impunctate............ ................................................................................................. B. longicornis (LÖBL, 1971)
- Ventrite 1 coarsely punctate posterior basal puncture row ................................................25
25 Apical halves of parameres distinctly bent and with weakly sclerotized inner margins ........ ........................................................................................................... B. pigra (LÖBL, 1971)
- - Parameres straight, with inner and outer margins nearly evenly sclerotized...................26
26 Parameres almost as long as median lobe. Internal sac without narrow lateral rod............... ............................................................................................................. B. vidua LÖBL, 1990
- Parameres much shorter than median lobe. Internal sac with narrow lateral rod................... ........................................................................................................... B. lasciva LÖBL, 2013
description: Published as part of Löbl, Ivan, 2018, Supplement to the knowledge of the genera Baeocera ERICHSON, 1845 and Scaphobaeocera CSIKI, 1909 (Coleoptera, Staphylinidae, Scaphidiinae) of the People's Republic of China, pp. 1295-1303 in Linzer biologische Beiträge 50 (2) on pages 1299-1300, DOI: 10.5281/zenodo.5275102