Rediviva Friese 1911
Creators: name: Melin, Annalie
name: Manning, John C.
name: Colville, Jonathan F.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Melittidae
Rediviva

description: Revised key to female and male Rediviva from the summer-rainfall region
Revision of the key of Whitehead et al. (2008), with the inclusion of R. steineri (Kuhlmann 2012b; Melin & Colville 2022) and the new species R. vogeli sp. nov. Melin & Colville. The male of R. transkeiana is currently unknown.
Females
1 Antenna with 10 flagellar segments (females).............................................................. 2
- Antenna with 11 flagellar segments (males)............................................................... 13
2 Galea rounded apically (Figs 3A, C, E, G, I, K; 4G)......................................................... 3
- Galea pointed apically (Figs 3N–O; 4A–F)................................................................ 10
3 Scopa yellow-white hairs intermixed with black or orange with mostly black hairs on the basitarsus.................... 4
- Scopa orange with black hairs on the apical third of the basitarsus or all black on the tibia and basitarsus............... 5
4 Scopa black and orange; integument on T1–T2 black, forelegs long; length greater than 13 mm ................................................................................................ R. autumnalis Whitehead & Steiner
- Scopa black and yellow-white; integument on T1–T2 orange interrupted medially with black; forelegs short, length less than 9 mm ............................................................................ R. rufocincta (Cockerell)
5 Integument of metasomal terga 1–2 partly red-orange (orange area continuous in R. transkeiana and interrupted medially with black in R. colorata)................................................................................... 6
- Integument of metasomal terga 1–2 black.................................................................. 7
6 Scopa black; T1–T4 weakly developed apical hair bands.......................... R. transkeiana Whitehead & Steiner
- Scopa orange with black hairs on the apical third of the basitarsus; distinct apical hair bands........ R. colorata Michener
7 T2–T3 weakly developed apical hair bands; forelegs short; length less than 8 mm ........ R. saetigera Whitehead & Steiner
- T2–T3 with distinct apical hair bands; forelegs long; length greater than 8 mm ..................................... 8
8 Orange apical hair bands on T2–T3; hairs on foretarsus orange................................ R. steineri Kuhlmann
- White apical hair bands on T2–T3........................................................................ 9
9 Hairs on disc of T4 white intermixed with some black; hairs on foretarsus orange........ R. pallidula Whitehead & Steiner
- Hairs on disc of T4 black; hairs on foretarsus brown............................... R. brunnea Whitehead & Steiner
10 Galea acutely pointed (Figs 3N; 4E)..................................................................... 11
- Galea pointed, not acutely (Figs 4A–B).................................................................. 12
11 Integument of T1–T2 black......................................................... R. politissima (Cockerell)
- Integument of T1–T2 mostly reddish-orange................................... R. rhodosoma Whitehead & Steiner
12 Galea curved apically, beak-like (Fig. 4C); disc on T3 covered in long white or yellow hairs intermixed with black hairs........................................................................................ R. neliana Cockerell
- Galea apical third spear-shaped (Fig. 4A); disc of T3 covered in black hairs.................. R. vogeli Melin & Colville
Males
13 Ventral margin of the apical plate of S8 with one (Figs 5I and 5M) to three shallow emarginations (Figs 5A, E, I and 7A, E, I, M).............................................................................................. 14
- Ventral margin of the apical plate of S8 evenly rounded (Fig. 5A) or with deep median emargination on the distal margin (Fig. 5E).......................................................................................... 20
14 Integument of the metasomal terga 1–2 partly or mostly completely reddish-orange............................... 15
- Integument of the metasomal terga 1–2 black.............................................................. 16
15 Vestiture on outer surfaces of hind tibia and basitarsus mostly white; apical lobes of S7 long (Fig. 6F).......................................................................................... R. rhodosoma Whitehead & Steiner
- Vestiture on outer surfaces of hind tibia and basitarsus black and/or orange; apical lobes of S7 short (Fig. 6B)............................................................................................ R. rufocincta (Cockerell)
16 Galea rounded apically, ventral margin curved upwards (Figs 3F, J, L and 4H)................................... 17
- Galea pointed apically (Figs 4B, D, F)................................................................... 21
17 Ventral margin of the apical plate of S8 with two to three shallow emarginations.................................. 18
- Ventral margin of the apical plate of S8 with one emargination................................................ 19
18 Ventral margin of the apical plate of S8 with two lateral notches slightly pronounced (Fig. 7A), basal part of S8 with more square shoulders (shown by black arrow in figure).......................................... R. steineri Kuhlmann
- Ventral margin of the apical plate of S8 with two lateral notches more pronounced and rounded (Fig. 6I), basal part of S8 with sloping shoulders........................................................... R. brunnea Whitehead & Steiner
19 S8 with distinct rounded protuberances on lateral margins approx. one third of the length down (Fig. 5I shown by black arrow); the median lobes of the S7 are long (Fig. 5J); medial part of the anterior S6 heart-shaped (Fig. 5K); penis valves on the genital capsule apically pointed (Fig. 5J); galea short (Fig. 3F)........................... R. autumnalis Whitehead & Steiner
- S8 with no protuberances on lateral margins (Fig. 5M); the median lobes of the S7 are short (Fig. 5N); median and lateral lobes of S6 well developed and medial part not heart-shaped (Fig. 5O); penis valves on the genital capsule apically rounded, hairs on the gonostylus distinctly project at right angles (Fig. 5P); galea long (Fig. 3J)........... R. pallidula Whitehead & Steiner
20 Ventral margin of the apical plate of S8 evenly rounded (Fig. 5A); the median lobes of the S7 short with no hairs and no lateral lobes (Fig. 5B); distal half of integument of the metasomal terga 1–2 orange..................... R. colorata Michener
- Ventral margin of apical plate of S8 with deep median emargination (Fig. 5E); the median lobes of the S7 short (Fig. 5F), terminating in short, pale yellow hairs and large lateral lobes; integument of the metasomal terga 1–2 black....................................................................................... R. saetigera Whitehead & Steiner
21 Galea acutely pointed, falcate (Fig. 4F); hairs on median lobes of S7 bicoloured (yellow intermixed with black) (Fig. 7F) or all black.......................................................................... R. politissima (Cockerell)
- Galea pointed, not acutely; hairs on median lobes of S7 yellow (Figs 7J, N)...................................... 22
22 Galea curved apically, beak-like (Fig. 4D); ventral margin of the apical plate of S8 with three shallow emarginations with two lateral notches pronounced (Fig. 7I); yellow hairs on disc of T2; T7 orange-yellow hairs............ R. neliana Cockerell
- Galea apical third spear-shaped (Fig. 4B); ventral margin of the apical plate of S8 with three shallow emarginations with two distinct medial notches (Fig. 7M); black hairs or black hairs intermixed with yellow on disc of T2; T7 black hairs....................................................................................... R. vogeli Melin & Colville
description: Published as part of Melin, Annalie, Manning, John C. & Colville, Jonathan F., 2024, Species circumscription within the Rediviva neliana group (Hymenoptera: Melittidae), with the description of the new species Rediviva volgeli sp. nov. Melin & Colville, pp. 245-284 in Zootaxa 5507 (2) on pages 280-281, DOI: 10.11646/zootaxa.5507.2.3, http://zenodo.org/record/13757643