Aegidinus Species (Females)

Colby, Julia, 2009, Monographic revision of the genus Aegidinus Arrow (1904) and generic phylogeny of the world Orphninae (Coleoptera: Scarabaeidae: Orphninae)., Insecta Mundi 2009 (76), pp. 1-41 : 14-15

Key to Aegidinus Species (Females)

For a description of the terms applied to the female genital sclerites, see Materials and Methods and

Fig. 3-4 . Sternite six in females is entire, but is emarginated in males.

1. Inferior sclerite with interior process produced into finger-like projections ( Fig. 65, 67, 69 ), or inferior sclerite folded around and almost covering superior sclerite ( Fig. 71 ) ....................... 2

— Inferior sclerite with interior process not produced into finger-like projections ( Fig. 66, 68, 70, 72- 77 ), or inferior sclerite folded over and completely or almost completely covering superior sclerite ( Fig. 71 ) .................................................................................................................................... 4

2 (1). Finger-like projections of inferior sclerite less than twice as long as wide ( Fig. 67 ) ..................... ..................................................................................................... A. guianensis (Westwood)

— Finger-like projections of inferior sclerite more than twice as long as wide ( Fig. 65, 69 ) .......... 3

3(2). Anterior margin of inferior sclerite with ridge ( Fig. 65 ) ........................ A. brasiliensis Arrow

— Anterior margin of inferior sclerite without ridge ( Fig. 69 ) ................ A. howeae Colby , n. sp.

4 (1). Inferior plate folded over and almost or completely covering superior sclerite. ( Fig. 71 ) .............. ...................................................................................................... A. simulatus Colby , n.sp.

— Inferior plate never folded over, covering superior plate ............................................................. 5

5 (4). Accessory sclerites projecting from face of fused inferior and superior sclerite. ( Fig. 75 ) ............. ......................................................................................................... A. tricornis Colby , n.sp.

— Accessory sclerites (if apparent) projecting anteriorly from apical margin of superior sclerite. Superior and inferior sclerites completely fused, partially fused, or unfused .......................... 6

6 (5). Interior margins of superior plate produced into a spinulous bulb. ( Fig. 76 ) ................................ ............................................................................................................ A. unicus Colby , n.sp.

— Interior margins of superior plate not produced into a bulb. Accessory sclerites present or apparenty absent ........................................................................................................................................ 7

7 (6). Superior and inferior sclerites fused along entire length, with no visible suture; accessory sclerites present or apparently absent ( Fig. 73-74 ) ........................ A. teamscaraborum Colby , n.sp.

— Superior and inferior plates not fused along entire length; accessory plates always present .... 8

8 (7). Each superior sclerite with a central, circular boss located just above inferior sclerite ( Fig. 72 ). ...................................................................................................... A. sunidigea Colby , n.sp.

— Superior sclerites without circular boss ...................................................................................... 9

9 (8). Superior plate much shorter than inferior plate ( Fig. 70 ) ................ A. oreibates Colby , n.sp.

— Superior plate larger than or equal in size to inferior plate; superior plate sub-quadrate to rectangular in shape ( Fig. 66, 68, 77 ) ........................................................................................................ 10

10 (9). Superior plate with transverse ridge ( Fig. 66 ) ............... A. candezei Preudhomme de Borre

— Superior plate without transverse ridge .................................................................................... 11

11(10). Spinulous region at interior margin of superior plate projecting downwards ( Fig. 77 ) .................. ................................................................................................. A.venezuelensis Colby , n.sp.

— Spinulous region at interior margin of superior plate projects inwards ( Fig. 68 ) ......................... ................................................................................................. A. howdenorum Colby , n.sp.

Figures

Figure 1-9. Scale bar = 1 mm. 1) Mouthparts exposed beyond clypeus. a) Labrum exposed beyond edge of clypeus. b) Single, external, lateral lobe on mandibles. 2) Apical spines of metatibia (indicated by arrows) separated by basal metatarsal segment. 3) Female genital sclerites of Aegidinus brasiliensis Arrow. a) Superior sclerite. b) Inferior sclerite. c) Interior process. 4). Female genital sclerites of A. oreibates Colby. a) Superior sclerite. b) Inferior sclerite. c) Accessory sclerite. 5) Male parameres (frontal view) of A. oreibates. a) Lateral lobe. b) Median lobe. 6) Male parameres (frontal view) of A. brasiliensis. a) Lateral lobe. b) Median lobe. 7) Male parameres and phallobase (lateral view) of A. guianensis (Westwood). a) Lateral lobe. b) Median lobe. c) phallobase. d) Basal piece of phallobase. 8) Attachment of first antennal club segment to stem offset (Hybalus sp.). 9) Attachment of first antennal club segment to stem not offset (Orphnus sp.).

Figures 65-77. Female genitalia, gonocoxites. Scale bar = 1 mm. 65) A. brasiliensis. 66) A. candezei. 67) A. guianensis. 68) A. howdenorum. 69) A. howeae. 70) A. oreibates. 71) A. simulatus. 72) A. sunidigea. 73-74) A. teamscaraborum. 75) A. tricornus. 76) A. unicus. 77) A. venezuelensis.