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$Estimación de las poblaciones de Jilguero \(Myadestes melanops ...$

Coccocarpia gallaicoi Lücking, Chaves & Umaña sp. nov. Fig. 2C–D Species nova similis Coccocarpia epiphylla sed lobis brevioribus isidiis instructis differt. Typus: COSTA RICA. San José: South wall of canon of Río Virilla between El Brazil and Santa Ana, May 1930, Dodge 7777 (FH – holotype; originally identified as Coccocarpia cronia var. isidiosa). Thallus corticolous, foliose-squamulose, covering irregular areas of up to 50 mm diam. Lobes thin, short, ascendent, 1–2 mm wide, broadly flabellate, shallowly branched, densely imbricate and giving the thallus a squamulose appearance; lobe apices curved downward. Upper surface dark blue-green when moist, dark grey when dry, with thin, longitudinal, white striae. Lower surface black, with numerous, black, unbranched, 0.1–0.2 mm long rhizines forming a mat, not or scarcely protruding from under the lobe margins. Lobe surface isidiate. Isidia laminal, numerous, erect, cylindrical, partly branched, 0.2–0.4 × 0.08–0.1 mm, creme-colored but apices dark grey. Apothecia not observed. Pycnidia not observed. Chemistry: No substances detected by TLC. Notes: This very conspicuous new species was hidden under the name Coccocarpia cronia var. isidiosa in the Dodge herbarium at FH. While the latter is a synonym of C. palmicola (ARVIDSSON 1983), the present specimen turned out to have exactly the same thallus morphology as the non-isidiate material named C. aff. gallaicoi below. Both belong in the C. epiphylla group, but are characterized by rather short lobes that give the impression of a squamulose thallus. Superficially most similar is C. imbricascens, but that species has a pigmented medulla and more delicate, light grey lobes and lacks isidia (see below). Distribution and Ecology: So far only known from the type locality in a montane rainforest. Etymology: We name this new species after our colleague and friend David, the subject of this splendid compilation, on the occasion of his 65th birthday. To avoid the usual 'gallowayi', already found in several lichen names, we looked up the meaning of the name Galloway and came up with 'foreign Gael'. The Gaels are an ethno-linguistic group in Ireland, Scotland and the Isle of Man, speaking one of the Gaelic languages and presumably originating from Gallaecia, a Roman province that comprised a territory in the north-west of Hispania (present-day Galicia in Spain and northern Portugal). The Romans gave the name Gallaecia to that province after the tribe of the 'Gallaicoi', who had been their foremost enemy in the region, and we choose that name as epithet for your new species in honour of David Galloway. 442
Coccocarpia aff. gallaicoi Lücking, Chaves & Umaña Fig. 2E Notes: This taxon keys out as Coccocarpia imbricascens in Arvidsson's (1983) key and also fits the description, but differs in its dark grey, more robust lobes with distinct white striae and apical margins curved downward, and its white medulla, among other characters. It has exactly the same lobe morphology as C. gallaicoi (see above), but lacks isidia and represents the non-isidiate counterpart of that species. However, since there is only one collection, we opted for not describing this taxon formally. Selected specimens examined: COSTA RICA. Puntarenas: La Amistad International Park, Jun 2002, Lücking 15240aa (F). Coccocarpia glaucina Kremp. Fig. 1H Notes: Previously known from the eastern Paleotropics only (ARVIDSSON 1983; MAKHIJA et al. 1999). The collections from Costa Rica fit the paleotropical material well; they can be distinguished from Coccocarpia palmicola by the canaliculate lobes with mostly marginal isidia. Selected specimens examined: COSTA RICA. Alajuela: San Carlos, Boca Tapada, Chaves 2240 (INB- 3942438). Limón: Finca Castilla, Jul 1936, Dodge & Goerger s.n. (FH; as Coccocarpia albida). W bank of Río Siquirres, Dec 1929, Dodge et al. 5595 (FH; as C. isidiophylla var. granulosa). Puntarenas: Flood-plain of Río Sandalo, peninsula of Osa, Aug 1936, Dodge & Goerger 9902 (FH; as C. pellita var. parmelioides). Monteverde, San Gerardo Biological Station, Chaves 128 (INB- 3762776). Coccocarpia guimarana (Vain.) Swinsc. & Krog Fig. 1D Notes: The present material, three small but well-developed thalli from the same locality, was first identified as Coccocarpia dissecta, due to the comparatively narrow lobes. However, a detailed study of its morphology showed that this taxon is distinct in its narrowly flabellate, very thin lobes which lack a pronounced hypothallus. It is thus more similar to C. epiphylla and narrow- and small-lobes forms included by ARVIDSSON (1983) in C. palmicola. The latter author interprets these forms, exemplified by the type material of C. guimarana, as ecotypes of C. palmicola typical of lowland rainforest. However, we have collected very typical C. palmicola in Costa Rican lowland rainforest and even in dry and coastal areas, and they agree well with the montane forms in their broad, rounded lobes. The photographs of C. palmicola and C. guimarana depicted by ARVIDSSON (1983: 73), as well as the present material, suggest that the narrow- and small-lobed form is specifically distinct, and following SWINSCOW & KROG (1976), the name C. guimarana is here tentatively reinstated, pending further study of this difficult complex of species. We have not seen the type material of C. cronia var. microphyllina Vain., but acording to the 443
Page 1 and 2: Lichenological Contributions in Hon
Page 3 and 4: Material and Methods Specimens were
Page 5 and 6: previously by Vainio and Zahlbruckn
Page 7 and 8: 10 Lobes rather thick (70-130 µm),
Page 9 and 10: Fig. 1. Habit of Coccocarpia specie
Page 11 and 12: 4708 (FH; as C. pellita var. smarag
Page 13: Fig. 3. Habit of Coccocarpia specie
Page 17 and 18: own, more or less flat and with ind
Page 19 and 20: Brenes s.n. (FH; as C. cronia). Cer
Page 21 and 22: 0.2-0.4 mm long rhizines not formin
Page 23 and 24: Fig. 4. Morphotypes of Coccocarpia
Page 25 and 26: Fig. 6. Ecology of Coccocarpia spec
Page 27 and 28: There is no clear correlation betwe
Page 29: SANTESSON, R. (1952): Foliicolous l

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