Rhaucus, Simon, 1879

Pinzón-M, Conchita & Pinto-Da-Rocha, Ricardo, 2024, Two new species of Rhaucus Simon, 1879 reveal putative synapomorphies related to the microstructural morphology of male genitalia (Opiliones: Cosmetidae), Zootaxa 5555 (1), pp. 35-56 : 38

publication ID	https://doi.org/ 10.11646/zootaxa.5555.1.3
publication LSID	lsid:zoobank.org:pub:A27CB74D-EB39-4475-A059-D649C2DBEFB6
DOI	https://doi.org/10.5281/zenodo.14535911
persistent identifier	https://treatment.plazi.org/id/833F87A3-430F-FFF1-FF43-FBCDFA64F82D
treatment provided by	Plazi
scientific name	Rhaucus
status

Treatment

Key to the males of species of Rhaucus View in CoL

(not including R. trilineatus )

1. DS with transverse-colored stripes on scutal grooves (see Figs. 2A View FIGURE 2 , 6A View FIGURE 6 and 15A in García & Kury, 2017)............... 2

- DS with reticular pattern on lateral sides of cephalothorax or extended laterally on abdomen (figs 2A and 5A)............ 4

2. Area III of the dorsal scutum with mammiliform tubercles (see Figs. 2D View FIGURE 2 and 3B View FIGURE 3 in García & Kury, 2017)............... 3

- Area III of the scutum with acuminate tubercles ( Fig. 2B View FIGURE 2 and 5B View FIGURE 5 ), Fe IV with two longitudinal rows of tubercles increasing in size distally (see Fig. 7E View FIGURE 7 in García & Kury, 2017); dorsal process of glans spoon-shaped (see Fig. 8F View FIGURE 8 in García & Kury, 2017)..................................................................................... R. quinquelineatus View in CoL

3. Fe III with two ventral longitudinal rows of tubercles equal in size (see Fig. 3D View FIGURE 3 in García & Kury, 2017), MS B areolate ( Fig. 7B View FIGURE 7 )...................................................................................... R. vulneratus View in CoL

- Fe III with a row of outstanding tubercles (see Fig. 16D in García & Kury, 2017; MS B volcano-shaped ( Fig. 4D View FIGURE 4 )... R. florezi View in CoL

4. Area III of DS with dome-shaped tubercles (see Fig. 9C View FIGURE 9 and 12C View FIGURE 12 in García & Kury, 2017)........................... 5

- Area III of DS with acuminate tubercles ( Fig. 2B View FIGURE 2 and 5B View FIGURE 5 )..................................................... 6

5. Fe IV with ventral tubercles not well developed increasing in size distally (see Fig. 13E in García & Kury, 2017); Pa IV with outstanding tubercles on the apical portion; dorsal process of glans finger-shaped elongate (see Fig. 14G in García & Kury, 2017)....................................................................................... R. robustus View in CoL

- Fe IV with two ventral rows of tubercles increasing in size distally (see Fig. 10E View FIGURE 10 in García & Kury, 2017); Pa IV with retrolateral outstanding tubercles; dorsal process of glans finger-shaped, short (see Fig. 11G View FIGURE 11 in García & Kury, 2017)....... R. serripes View in CoL

6. Fe IV with two longitudinal rows of tubercles being outstanding at the distal portion of the Fe ( Fig. 3E View FIGURE 3 )................. 7

- Fe IV with two well developed rows of tubercles covering all length of Fe ( Fig. 3G View FIGURE 3 )................................ 8

7. Pattern of color with almost complete arborescent chevron, complex omega stripe and abdominal grooves with patches ( Figs. 5A View FIGURE 5 ); dorsal process of glans spoon-shaped ( Fig. 7C–D View FIGURE 7 ); MS B areolate ( Fig. 7B View FIGURE 7 ).................... R. gaiterus sp. nov.

- Pattern of color formed by two lateral longitudinal patches from the prosoma to the posterior areas of the DS ( Fig. 8A–B View FIGURE 8 ); dorsal process of glans finger-shaped ( Fig. 8E–F View FIGURE 8 ); MS E and B volcano-shaped ( Fig. 8D View FIGURE 8 )........ R. marmoratus comb.nov.

8. Fe III with two ventral longitudinal rows of tubercles equal in size; VP with distal corners not laterally extended (see Fig. 8C–D View FIGURE 8 in García & Damron, 2019)............................................................ R. serratus comb. nov.

- Fe III with two ventral longitudinal rows of tubercles increasing in size distally ( Fig. 3F View FIGURE 3 ); VP with distal corners laterally extended ( Fig. 4A, B and F View FIGURE 4 )............................................................................. 9

9. Color pattern with patches on the prosoma, extended toward the lateral portion of the abdominal scutum, and patches on areas IV and V ( Fig. 2A–B View FIGURE 2 ); dorsal process of glans spoon-shaped, wide distally ( Fig. 4A View FIGURE 4 )................... R. artifex sp. nov.

- Color pattern with patches on lateral sides of prosoma, extended internally on area I, surrounding the paramedian tubercles on this area (see Fig. 2A–B View FIGURE 2 in García & Ahumada, 2018); dorsal process of glans spoon-shaped, narrow distally (see Fig. 7C View FIGURE 7 in García & Kury, 2018)...................................................................... R. papilionaceus View in CoL