Wednesday, November 22, 2017

[Ichthyology • 2017] Cirrhilabrus shutmani • A New Species of Fairy Wrasse (Teleostei: Labridae) from the Babuyan Islands, northern Philippines


Cirrhilabrus shutmani
Tea & Gill, 2017  


Abstract

Cirrhilabrus shutmani, new species, is described on the basis of four specimens from Didicas Volcano, Babuyan Islands, Cagayan province, northern Philippines. The holotype and three paratypes were collected at a depth of 50–70 m, along denuded rubble slopes. The new species belong to a complex consisting of Cirrhilabrus blatteus, C. claire, C. earlei, C. jordani, C. lanceolatus, C. roseafascia, C. rubrisquamis and C. sanguineus. Aside from similar nuptial male colouration, the nine species share the following character combination: relatively short pelvic fins (not or barely reaching anal-fin origin, except for C. claire with relatively long pelvic fins); a pair of stripes on head (in both sexes); and, dorsal and anal fins without obvious stripes or spots. It differs from the other members of its group in lacking any stripes on the upper and lower body, and in having the following live colouration details: upper part of nape dusky red; dorsal and anal fin bright red with dusky markings; pelvic fins bright red, dusky anteriorly; caudal fin bright yellow basally with distal half bright red. We also present new distribution records for C. claire, C. earlei and C. lanceolatus, as well as a brief mention of a possibly new, related species from the Ogasawara Islands.

Keywords: Pisces, ichthyology; taxonomy; Didicas Volcano; colouration

FIGURE 3. Cirrhilabrus shutmani n. sp., male holotype, PNM 15354, 55.7 mm SL, from Didicas Volcano, Babuyan Islands, northern Philippines. Image reversed. Photo by B.P. Shutman.
FIGURE 4. Cirrhilabrus shutmani n. sp., male, approximately 50 mm TL, from Didicas Volcano, Babuyan Islands, northern Philippines. Specimen not retained. Photo by B.P. Shutman.

FIGURE 5. Cirrhilabrus shutmani n. sp., males,
A) approximately 57 mm TL, B) approximately 60 mm TL, C) approximately 65 mm TL, all from Didicas Volcano, Babuyan Islands, northern Philippines.
Specimens not retained. Photos by B.P. Shutman.

Cirrhilabrus shutmani n. sp. 
Magma Fairy-wrasse

Diagnosis. Cirrhilabrus shutmani shares similar meristic counts to the other species in its complex, but differs from congeners in the following live colouration details: upper part of nape dusky red; dorsal and anal fin bright red with dusky markings; pelvic fins bright red, dusky, and unmarked; caudal fin bright yellow basally with distal half bright red.

Etymology. Named in honour of Barnett Paul Shutman, who first provided photos as well as the type specimens of the new species (via Aquarium Iwarna, Singapore). The common name, magma fairy wrasse, alludes to its live colouration, as well as the type location of Didicas Volcano, an active volcano part of the “Pacific Ring of Fire” at the southern end of the Luzon Volcanic Arc. 

Distribution and habitat. Cirrhilabrus shutmani is known only from the type locality, Didicas Volcano in the Babuyan Islands at the northern tip of the Philippines (Figure 6). It appears to inhabit steep slopes comprised mostly of volcanic rubble at depths ranging from 50–70 m

FIGURE 8. Males of selected Cirrhilabrus species. All are in nuptial display except D, F and I.
A) Cirrhilabrus shutmani n. sp., aquarium specimen from Didicas Volcano, Babuyan Islands, northern Philippines (photo by D. Laux); B) C. earlei, aquarium specimen from Kwajalein Atoll, Marshall Islands (photo by T. lauderdale); C) C. jordani, aquarium specimen from the Hawaiian Islands (photo by Y.K. Tea); D) C. blatteus, Israel, Gulf of Aqaba (photo by J.E. Randall); E) C. roseafascia, aquarium specimen from Coral Sea, Australia (photo by Y.K. Tea); F) C. lanceolatus, aquarium specimen from Scarborough Shoal, South China Sea, western Philippines (photo by B.P. Shutman); G) C. sanguineus, aquarium specimen from Mauritius (photo by H. Tanaka); H) C. rubrisquamis, aquarium specimen from the Maldives (photo by T. Lauderdale); I) C. claire, aquarium specimen from Mo’orea, French Polynesia (photo by Y.K. Tea).


 Yi-Kai Tea and  Anthony C. Gill. 2017. Cirrhilabrus shutmani, A New Species of Fairy Wrasse from the Babuyan Islands, northern Philippines (Teleostei: Labridae). Zootaxa. 4341(1); 77–88. DOI:  10.11646/zootaxa.4341.1.6
  
The Magma Fairy Wrasse Is Now Officially Cirrhilabrus shutmani http://disq.us/t/2vdew8f
The Magma Fairy Wrasse, Cirrhilabrus shutmani, Just Described From Northern Philippines https://reefbuilders.com/2017/11/01/cirrhilabrus-shutmani-just-described-from-northern-philippines/ via @anteksiler


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