Notorhinus floresi, Moritz & Parra-Gómez, 2023

Moritz, Leif & Parra-Gomez, Antonio, 2023, Notorhinus floresi sp. nov. gen. nov.: The first records of Siphonophorida in Chile and Siphonorhinidae in South America (Colobognatha), Arthropod Systematics & amp; Phylogeny 81, pp. 565-579 : 565

publication ID	https://dx.doi.org/10.3897/asp.81.e100520
publication LSID	lsid:zoobank.org:pub:D1591625-B28B-4400-BA86-CBD3C480012A
persistent identifier	https://treatment.plazi.org/id/B5E4AFC7-4DF3-407A-B4B2-A0574A98B372
taxon LSID	lsid:zoobank.org:act:B5E4AFC7-4DF3-407A-B4B2-A0574A98B372
treatment provided by	Arthropod Systematics & Phylogeny by Pensoft
scientific name	Notorhinus floresi
status	sp. nov.

Treatment

3.1.3. Notorhinus floresi sp. nov.

Figs 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4 , 5 View Figure 5

Diagnosis.

Small (<13 mm) elongated Siphonorhinidae with arched metazonites. Body pale, covered by setae, creating a velvety appearance (Fig. 2A View Figure 2 ). Anterior and posterior gonopods with 7 podomeres (Fig. 5E View Figure 5 ). Posterior gonopod apically with 3 branches, 2 laminate and 1 spinous (Fig. 5F View Figure 5 ). Pseudopenis prominent, cone-shaped (Fig. 5B View Figure 5 ). Posterior margin of metazonite (limbus) with small fluke-shaped sculpture (Fig. 4D View Figure 4 ). Antennomere 7 with spiniform sensilla basiconica in 2 rows (Fig. 3F View Figure 3 ) (1 row in Notorhinus sp.). Metazonite posterior margin straight (Fig. 4A View Figure 4 ) (sinuate in Notorhinus sp.). Differs from Notorhinus sp. (MNHNC 8390) in coloration, number of body-rings and its length relative to the number of body-rings (Fig. 2A View Figure 2 ): Notorhinus sp. has 80 body-rings but is only 11.5 mm long, while Notorhinus floresi sp. nov. has up to 54 body-rings, but a length of up to 13.8 mm.

Etymology.

The species epithet floresi refers to Edgardo Flores, who collected the examined specimens, and honors his continuous engagement in nature conservation and his persistence on the protection of Nahuelbuta National Park and adjacent areas. Noun in genitive.

Material examined.

Holotype: ♂ (MNHNC 8387); CHILE: Biobío, near Caramavida ; 37.72698°S 73.19339°W; 21.iix.2019; Edgardo Flores leg. (e23); hand collected under a decaying piece of wood, in a relictual forest surrounded by eucalypt plantations (Fig. 1C, D View Figure 1 ) GoogleMaps . - Paratypes: 2 ♂ (ZFMK-MYR 12267, ZFMK-MYR 12268); 3 ♀ (MNHNC 8388, MNHNC 8389, ZFMK-MYR 12269); same data as holotype GoogleMaps .

Description.

Measurements: Male holotype (MNHNC 8387): br47+T, 12 mm long; male paratype (ZFMK-MYR 12267): br37+T, 8.9 mm; male paratype (ZFMK-MYR 12268): br54+T, 13.8 mm; female paratype (MNHNC 8389: br42+T, 10.7 mm; female paratype (MNHNC 8388): br49+T, 12.8 mm; female paratype (ZFMK-MYR 12269): br47+T, 10.9 mm. Body thread-like, elongate thin, pale white (Fig. 2A-C View Figure 2 ), in ethanol head lighter in coloration than body (Fig. 2C, D View Figure 2 ). - Head: Head pyriform, anteriorly tapering, widest behind antennae, covered by long setae (Fig. 3A View Figure 3 ), posterior and lateral of antennae covered by scale-like sculpture (Fig. 3B View Figure 3 ). Labrum incised, two lateral spinous protuberances on each side of incision, incision lined by. by up to 5 teeth on each side. Salivary glands opening via> 50 small pores, arranged in a circular field above labrum (Fig. 3C, D View Figure 3 ). Lateral margin (genae) and anterior margin (labrum) of head capsule straight, tightly appressed to gnathochilarium (Fig. 3B View Figure 3 ). Antennae inserting laterally in posterior half of head capsule (Fig. 3A View Figure 3 ), with 7 antennomeres + apical disc, elbowed between antennomeres 3 and 4. Antennomere 6 longest (6> 2> 5> 1 = 3 = 4> 7), 2 and 6 longer than wide, 1, 3-5 and 7 wider than long, 5 and 6 widest. Each antennomere with several rows of setae (Fig. 3B View Figure 3 ). Antennomere 5 without sensilla basiconica. Antennomere 6 with ca. 25 sensilla basiconica arranged in a circular field (not sunken into a sensory pit) located laterally in some distance from antennomere’s apical margin (Fig. 3E View Figure 3 ). Antennomere 7 on apical margin with a lateral group of 8 spiniform sensilla basiconica arranged in two rows, and a single spiniform sensilla basiconica each at anterior and posterior margin, projecting above apical disc between apical cones. Apical disc sunken into antennomere 7 with 4 apical sensory cones, base of apical cones elevated (Fig. 3F View Figure 3 ). Gnathochilarium triangular, tightly appressed to head capsule consisting of stipites, mentum and lamellae linguales (proximal part not visible). Stipites each with 5 marginal setae, apically with palp-like extension, each with 5 sensilla (Fig. 3D View Figure 3 ). Mentum with 6 (3+3) setae arranged in 2 longitudinal rows. Lamellae linguales each with 2 short setae, mesal margins apically with hair-like structures (Fig. 3D, G View Figure 3 ). Mandibles internalized, not visible externally (Fig. 3A, B View Figure 3 ). - Body-rings: Collum longer than following tergite, covering posterior part of head, anterior margin almost straight. Collum covered by long setae and laterally with scale-like sculpturing (Fig. 3A, B View Figure 3 ). Each body-ring consisting of free tergite (1), pleurites (2) and sternites (2) (Fig. 4A-C View Figure 4 ). Body-rings 2-4 shorter than following body-rings. Tergites clearly divided into prozonite and metazonite (Fig. 4A, B View Figure 4 ). Prozonite narrower than metazonite, covered by circular cylinder/pillar-shaped sculpturing, lateral sculpturing becoming more acuminate, anterior margin with scale-like sculpturing, with few setae along anterior and posterior margin (Fig. 4A, B View Figure 4 ). Metazonite arched, circular/cylindrical sculpture restricted to anterior and lateral areas, resulting in a crown-shaped smooth dorsal area. Metazonite covered by setae (Fig. 4A, B View Figure 4 ). Posterior margin of metazonite (limbus) with 2 irregular rows of fluke-shaped sculptures (Fig. 4D View Figure 4 ). Ozopores from body-ring 5 onwards, positioned laterally in posterior half of metazonite, slightly elevated, surrounded by a ring of setae, with 2 posterior spines and 3 setae between spines (Fig. 4E View Figure 4 ). Pleurites almost rectangular, anteriorly and posteriorly rounded, laterally slightly curved towards legs. Pleurites anteriorly covered by setae and circular/cylindrical sculptures, posterior lateral sculpturing acuminate, anterior part of pleurite covered by flat scale-like sculptures (Fig. 4C View Figure 4 ). Sternites rectangular with a transverse elevation projecting between the legs’ coxae. Margins of this elevation with scale-like sculpturing, spiracles located laterally of legs (Fig. 4C View Figure 4 ). - Telson: Preanal ring ca. as long as preceding body-ring, posteriorly rounded in dorsal view, covered by setae. Cylindrical sculpture restricted to lateral and ventral part and the anterior margin, dorsal surface without sculpture (Fig. 4F View Figure 4 ). Anal valves (paraprocts) covered by setae, proximally with scale-like sculpturing. Subanal scale (hypoproct) present, with few setae and flat scale-like sculpture (Fig. 4F View Figure 4 ). - Legs: Leg pairs 1 and 2 with 6 podomeres: coxa, prefemur, femur, postfemur, tibia and tarsus. Coxae of leg-pair 1 fused to sternite (coxosternite) (Fig. 3G View Figure 3 ). From leg-pair 3 onwards with coxal sacs and short additional podomere (trochanter) between coxa and prefemur: Prefemur = tarsus> femur = coxa> postfemur = tibia> trochanter (Fig. 4G View Figure 4 ). Coxae almost touching mesally. Podomeres with few long setae (Fig. 4G View Figure 4 ). Tarsal claw bifurcated, ventral branch ca. 2/3 of length of dorsal branch on anterior legs (Fig. 4H View Figure 4 ), ventral branch decreasing in size on posterior legs. Last body-ring anterior of telson apodous. - Male sexual characters: Male gonopores on pseudopenes situated posteriorly on coxae of leg-pair 2 (Fig. 5A View Figure 5 ), pseudopenis knob-like/cone-shaped in ventral view (Fig. 5B View Figure 5 ), latero-posterior surface excavated with membranous surfaces (Fig. 5C View Figure 5 ). Leg-pair 9 and 10 modified to leg-like gonopods (Fig. 5D View Figure 5 ). Anterior gonopods with 7 podomeres, tapering distally. Each podomere with few setae arranged in a row. Podomere 1 with 2 anterior setae, podomere 2 with 1 anterior seta, podomere 3 with 3 anterior setae, podomere 4 with 1 anterior and 1 posterior setae, podomere 5 with 1 lateral and 4 posterior setae, podomere 6 with 2 lateral and 3 posterior setae, podomere 7 with 4 posterior setae (Fig. 5D, E View Figure 5 ). Apical podomere (7) flap-like, forming a sheath engulfing the tip of the posterior gonopod (Fig. 5F View Figure 5 ). Posterior gonopod with 7 podomeres, tapering distally. Podomeres 1-4 without setae, podomere 5 with 1 lateral seta, podomere 6 with 2 lateral setae, podomere 7 proximally with 1 posterior seta (Fig. 5D, E View Figure 5 ). Apical podomere (7) elongated, forming 3 branches, 1 short and pointed (spinous) posterior branch, and 2 long anterior branches, both proximally thin cylindrical, distally flattened (laminate) and paddle-shaped, almost triangular with sinuate margin. The 2 long branches rest in the sheath formed by anterior gonopod (Fig. 5F View Figure 5 ). - Female sexual characters: Female gonopores inconspicuous, behind 2nd coxa.