Aphyolebias boticarioi

description

Description: Morphometric data given in Table 2. Male usually larger than female, but largest specimen, female 47.1 mm SL. Dorsal profile gently convex from snout to end of dorsal­fin base, approximately straight on caudal peduncle. Ventral profile slightly convex between lower jaw and end of anal­fin base, nearly straight on caudal peduncle. Body somewhat deep, subcylindrical anteriorly, deeper than wide, to compressed posteriorly. Greatest body depth at level of pelvic­fin base. Jaws short, snout slightly pointed. Tip of dorsal fin slightly pointed. Anal fin rectangular, with short pointed tip in male, longer than deep in male, wider than long in female. Caudal fin subtruncate; short filaments on dorsal portion of posterior edge, and pointed ventral extension in male. Pectoral fin lanceolate, tip reaching vertical between anus and anal­fin origin in male, between pelvic­fin base and anus in female. Pelvic fin pointed, tip reaching between base of 1 st and 4 th anal­fin rays in male, and between urogenital papilla and base of 2 nd anal­fin ray in female. Pelvic­fin bases in close proximity in male, and separated by small interspace, about half pelvic­fin base, in female. Dorsal­fi

Moema apurinan sp. n. and Aphyolebias boticarioi sp. n. (Teleostei: Cyprinodontiformes: Rivulidae): two new annual killifishes from the Rio Purus basin, Brazilian Amazon

diagnosis

Diagnosis: The new species is distinguished from all congeners in having a deeper body (body depth 23.4 – 26.5 % SL, vs. 20.2 – 23.6 % SL). Similar to A. obliquus; both are distinguished from all other species of the genus by possessing dark brown spots on the pectoral fin in males (vs. spots absent). The new species differs from A. obliquus by having fewer anal­fin rays (14 – 16 vs. 16 – 18) and fewer pectoral­fin rays (13 – 14 vs. 15 – 16). Aphyolebias boticarioi is similar to A. rubrocaudatus, A. obliquus, A. claudiae and A. schleseri, but is distinguished from A. peruensis, A. wischmanni and A. manuensis by having a black stripe on the ventral margin of the caudal fin in males (vs. black stripe absent); distinguished from A. rubrocaudatus, A. obliquus, A. claudiae and A. schleseri, by having dark brown spots restricted to the posterior portion of the anal fin in males (vs. brown spots on the entire fin), and by the absence of a distal black stripe on the anal fin (vs. presence in males). The new species is also distinguished from A. rubrocaudatus by having an orange stripe only on the ventral portion of the fin in males (vs. an orange stripe on the ventral portion, and another

Moema apurinan sp. n. and Aphyolebias boticarioi sp. n. (Teleostei: Cyprinodontiformes: Rivulidae): two new annual killifishes from the Rio Purus basin, Brazilian Amazon

distribution

Distribution: Known only from the type locality, Rio Acre floodplains, Rio Purus drainage, Rio Amazonas basin, northwestern Brazil (Fig. 6). Habitat notes: All specimens were collected in a single small (about 5 m long and about 3 m wide) and shallow (about 0.30 ­ 0.40 m deep) temporary pool, with dark brown water, within the forest close to the Rio Acre. No aquatic vegetation.

Moema apurinan sp. n. and Aphyolebias boticarioi sp. n. (Teleostei: Cyprinodontiformes: Rivulidae): two new annual killifishes from the Rio Purus basin, Brazilian Amazon

etymology

Etymology: The name boticarioi after the Fundação O Boticário de Proteção À Natureza, in recognition to the support provided to studies on diversity and conservation of annual killifishes.

Moema apurinan sp. n. and Aphyolebias boticarioi sp. n. (Teleostei: Cyprinodontiformes: Rivulidae): two new annual killifishes from the Rio Purus basin, Brazilian Amazon