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Figure 4 in Maratus ammophilus, a new peacock spider in the Fimbriatus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 4 (continued from previous page, continued on next page). Living male types for Maratus ammophilus. 40-42, Note the indistinct, lighter middorsal thoracic tract of this individual.

Figure 4 in Maratus ammophilus, a new peacock spider in the Fimbriatus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 4 (continued on next page). Living male types for Maratus ammophilus. 8, Note the division of the left femur I into proximal and distal subsegments, separated by a darkly-pigmented shelf on the ventral side. 9-10, Courtship display, exposing the prominent features of legs I and II.

Figure 4 in Maratus ammophilus, a new peacock spider in the Fimbriatus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 4 (continued from previous page, continued on next page). Living male types for Maratus ammophilus. 18-20, Note the distinct but moderate iridescence of the dorsal opisthosoma of this individual.

Figure 3 in Maratus ammophilus, a new peacock spider in the Fimbriatus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 3. Males representing two different species in the Maratus fimbriatus group, both living on sandy ground near the western coast of Australia. 1-2, Male M. ammophilus at Lake Thetis, Jurien Bay (30.505942°S, 115.078376°E). In (1) a characteristic black bar across the front of each femur I can be seen. 3-4, Undescribed male Maratus sp. at Denham Beach, Shark Bay. In this species the front of each femur I (3) resembles that of Maratus sp. B (Figure 1:5). Photo credits: 1-4, © Su Rammohan, used with permission.

Figure 24 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 24. Distribution of Maratus species in the Leeuwin-Cape Naturaliste region, and inland to the east. Like M. flavus to the north (Tim's Thicket, not shown), M. azureus Schubert 2020 (1), M. boranup (2), M. felinus (3), M. madelineae Waldock 2014 (5), M. noggerup Schubert 2020 (6), M. suae (9), M. tessellatus (10), and M. tiddalik (11) have been found in single localities. M. speciosus (8) is also found to the north near Perth, restricted to coastal habitats. M. karrie (4), M. pavonis (7) and M. vespa Otto & Hill 2016 (12) are found in inland areas with more contiguous vegetation. Some locality data from iNaturalist (www.inaturalist.org) and the Atlas of Living Australia (ala.org.au) is included here. Image: USGS/Landsat.

Figure 20 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 20. Consecutive video frames (25 fps) showing vertical bobbing or vibration of the opisthosoma (arrows) during the two leg III courtship display of a male Maratus tiddalik. Note blurring in the lower position (e.g., frames 2, 4, 7, 10).

Figure 19 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 19. Sequential video frames (25 fps) showing vertical bobbing or vibration of the opisthosoma (arrows) during the two leg III courtship display of a male Maratus tiddalik. Here 12 cycles are shown over 2.44 seconds, or ~5/s. However this movement was not continuous and active bouts took place at ~12.5/s. Blurring in the down position (e.g., frames 22, 24) corresponded to a much higher rate of vibration (Figure 21).

Figure 13 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 13 (continued from previous page, continued on next page). Display positions of male Maratus tiddalik. 14-18, 19-20, 21-25, Three sets of sequential photographs of courtship display.

Figure 14 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 14. Sequential video frames (25 fps) showing a fixed single leg III wave by a male Maratus tiddalik. Movement and elapsed time (large blue arrow) relative to the previous frame is shown. Each wave was a sudden movement, at a rate of ~2/s. This is thought to represent advertisement when the male is not certain of a female position.

Figure 15 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 15. Sequential video frames (25 fps) showing a flexible single leg III wave by a male Maratus tiddalik. Here the complete cycle of erect leg position (A), slight depression of leg (B), flexion of tarsus (C), flexion of metatarsus (D), and sudden return to erect leg position (A) can be seen.

Figure 16 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 16 (continued on next page). Sequential video frames (25 fps) showing successive erect leg positions (position A) during the two leg III courtship display of a male Maratus tiddalik. Each pair of consecutive frames is superimposed (e.g., frame 1 is superimposed with frame 3 in 16:2, with elapsed time shown in a blue arrow). This highlights the sudden and assymetrical movement of both legs III, simultaneously either to the left or to the right, accompanied by movement of the body of the spider, during this display. In this example these shifts took place at a rate of ~2.4/s.

Figure 12 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 12. Views of the female paratype for Maratus tiddalik (♀ #1), in alcohol. 6-7, Two ventral views of the epigynum, each in a slightly different focal plane, with the anterior direction toward the top of each image.

Figure 7 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 7. Dorsal, lateral and ventral views of the three male types for Maratus tiddalik, in alcohol.

Figure 10 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 10. (continued from previous page). Views from life of the female paratype for Maratus tiddalik (♀ #1).

Figure 5 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 5 (continued from previous page). Views from life of the three male types for Maratus tiddalik.

Figure 4 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 4. Ventral views from life of two of the three male types for Maratus tiddalik. 5, Note the small flap (at right) in front of a tuft of long white setae that extend posteroventrally.

Figure 13 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 13 (continued on next page). Display positions of male Maratus tiddalik. 1-4, Single leg display. 5-13, Two leg display.

Figure 3 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 3. Comparison of the adult male Maratus boranup (1-3) with Maratus tiddalik (4-6). 3, Note elevation of the opisthosoma by the mating male.

Figure 23 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 23. Views of the type locality for Maratus tiddalik at Cape Naturaliste. 4, Note the broad-leaved coastal vegetation (most likely Scaevola crassifolia) and extensive areas of white limestone. Photographs by Ray Walker, used with permission.

Figure 2 in Maratus tiddalik, a new peacock spider in the flavus group from Western Australia (Araneae: Salticidae: Euophryini)

Figure 2. As shown here, the distinctive pattern of scales on the dorsal opisthosoma of the adult male Maratus tiddalik can be seen as the abstract image of a frog (anterior opisthosoma at the bottom).