Afroeudesis (Eudesoides)
Creators: name: Jałoszyński, Paweł
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Afroeudesis

description: TridensiusandSibylloconnusare placed within the subgroup 2B1, which is characterized by i) lateral submental sutures absent; ii) anterior mesoventral process absent or indistinguishably fused with mesoventral process; and iii) prosternum completely demarcated from hypomera (both in front of and behind procoxal cavities). This informal subgroup includes:
Afroeudesis subgen
.
Eudesoides, Archiconnus, Euconnomorphus, Euconnus, Napoconnus, Plaumanniola, Sibylloconnus, Tridensius, and Venezolanoconnus. These genera can be identified using the following key:
1. Frons and vertex with subtriangular ‘platform’ narrowing posterad....................................... Afroeudesis
- Head lacking dorsal ‘platform’........................................................................... 2
2. Antennae with strongly elongate and flattened club composed of two or more compactly assembled antennomeres, or entire
antenna strongly, gradually thickened, strongly flattened and compactly assembled (i.e., lacking constrictions between antennomeres).................................................................................. Plaumanniola
- Antenna not entirely or distally strongly flattened, and at least distal flagellomeres demarcated by constrictions........... 3
3. Anterior portion of mesoventral process with pair of sublateral arms curved anterad, forming trident-like structure; frons in dorsal view anteriorly emarginate; adcoxal part of prothoracic hypomeron (mesad hypomeral ridge) divided into narrow anterior and subtriangular posterior portions............................................................... Tridensius
- Mesoventral process lacking anterior trident-like structure; frons not anteriorly emarginate; adcoxal part of hypomeron not divided.............................................................................................. 4
4. Prothoracic hypomera anteriorly strongly expanded mesad, so that anterior margin of prosternum is only half as long as posterior margin................................................................................ Sibylloconnus
-. Hypomera anteriorly not strongly expanded mesad, so that anterior margin of prosternum is comparably long as posterior margin or only slightly shorter............................................................................... 5
5. Metacoxae narrowly separated by pair of long pointed spines directed posterad.................................... 6
- Metacoxae contiguous or separated by metaventral process lacking pair of spines................................... 7
6. Antennae gradually thickened; parameres modified, in lateral view their proximal half or more as broad as median lobe.......................................................................................... Venezolanoconnus
- Antennae with sharply delimited club; parameres unmodified, slender, rod-like........................... Napoconnus
7. Maxillary palpomere III conspicuously broadened, at most twice as long as broad and broader than 1/3 width of head; metacoxae contiguous............................................................................ Archiconnus
- Maxillary palpomere III not conspicuously broadened, more than twice as long as broad and not broader than 1/3 width of head; metacoxae at least narrowly (but often broadly) separated..................................................... 8
8. Basisternum much shorter than procoxal rests, often vestigial; frontoclypeal groove present; parameres unmodified, slender and rod-like...................................................................................... Euconnus
- Basisternum about as long as procoxal rests; frontoclypeal groove absent; parameres modified, in lateral view their proximal 3/4 or more as broad as median lobe, only short apical regions slender............................... Euconnomorphus
description: Published as part of Jałoszyński, Paweł, 2020, Corrections to the classification of the Neotropical ant-like stone beetles misplaced in Euconnus Thomson (Coleoptera, Staphylinidae, Scydmaeninae). Part 1., pp. 251-270 in Zootaxa 4755 (2) on pages 268-269, DOI: 10.11646/zootaxa.4755.2.3, http://zenodo.org/record/3731581