Corybas papillatus (Orchidaceae), a new orchid species from peninsular Thailand

A new species, Corybas papillatus, is described and illustrated from peninsular Thailand. The new species is easily recognized through a combination of the following characters: the purplish flower, the rounded apex of the dorsal sepal, the outer surface of dorsal sepal covered with irregular papillae in the upper half, the lateral sepals adnate laterally at the base to the connate petals, the V-shaped throat, the labellum bearing short hairs, dentate to erose labellum margins, and well-developed conical spurs. A key to the species of Corybas in Thailand is presented.

Three new species of Myrcia sect. Myrcia (Myrtaceae) from South America

Three new species of Myrcia are described, illustrated and discussed. Myrcia rionegrensis from the Brazilian Amazon is related to M. clusiifolia from which it differs in having leaves with acute apex and ribbed fruits (vs. rounded apex and smooth fruits in M. clusiifolia); Myrcia microcalyx is similar to Myrcia scytophylla but differs in having pubescent staminal ring and ellipsoid fruits (vs. glabrous staminal ring and globose fruits in M. scytophylla) and Myrcia peruviana is related to M. riverae, but differs in having smaller leaves and flower buds and ellipsoid fruits (vs. globose in M. riverae).

Two new endangered species of Polygala series Trichospermae (Polygalaceae), endemic to the Cerrado domain, Tocantins State, Brazil

The Cerrado domain is the most diverse savannah biome in the world and a biodiversity hotspot for conservation. Only a few areas of the domain remain well preserved, among them the Jalapão region in Tocantins State, currently is considered the best preserved area of the Brazilian Cerrado. Listed in a recent Angiosperm checklist for the region, there were two species of Polygala series Trichospermae, which were recognized as new by the first author. Polygala bringelii sp. nov., endemic to the Jalapão region, is diagnosed by its obclavate seeds without a ring of trichomes at their base, keel with the crest shorter than the cuculus, and the internal sepals (wings) longer than the capsule. Polygala tocantinensis sp. nov., endemic to Tocantins state, is distinguished by its internal sepals (wings) with two glands near to the rounded apex, and a ring of convergent trichomes at the base of the seeds. The two species are morphologically closest with Polygala trichosperma of sect. Timutua, series Trichospermae, but differs in its corolla and seeds shape and pubescence. An identification key, photographic plates, photos of floral parts under magnification, preliminary conservation assessments, and ecological comments of both species are also provided.

A new genus of Early Jurassic earwigs from England (Dermaptera)

A new genus of archidermapteran earwigs is described for Brevicula teres Tihelka (Dermapteridae) from Sinemurian deposits of the Black Ven Mudstone Member, Charmouth Mudstone Formation, Dorset, United Kingdom. Dacryoderma Engel, new genus, is distinct from Brevicula Whalley in the broadly rounded anterior tegminal border lacking a submedial hump and overall teardrop shape, with the anterior margin tapering gradually in a comparatively straight line to the more acutely rounded apex. The following new combination is established: Dacryoderma teres (Tihelka).

A NEW MASDEVALLIA FROM SOUTH-WESTERN COLOMBIA (ORCHIDACEAE: PLEUROTHALLIDINAE)

A new species belonging to Masdevallia section Racemosae is described from South-Western Colombia. It is very similar to Masdevallia racemosa, the only other member of the section, with which it shares the characteristic repent habit, loose multi-flowered inflorescence, and striking red-orange flowers. However, Masdevallia mirandae can be distinguished by the adaxially hispid sepals and the elliptic petals with a rounded apex. The new species is restricted to The Farallones de Cali National Natural Park and its populations are threatened by illegal mining activities.

Potamophylax coronavirus sp. n. (Trichoptera: Limnephilidae), a new species from Bjeshkët e Nemuna National Park in the Republic of Kosovo, with molecular and ecological notes

The Western Balkans are an important hotspot of caddisfly diversity in Europe, with several microscale endemics, many of which were discovered during the recent years. The genus Potamophylax Wallengren, 1891 likely originated and diversified in Europe, with the Balkan Peninsula being one of the most important diversity hotspots. In this paper, we describe the new species Potamophylax coronavirus sp. n. from Bjeshkët e Nemuna National Park in the Republic of Kosovo. The new species belongs to the Potamophylax winneguthi species group and is morphologically most similar to Potamophylax juliani Kumanski, 1999, currently known only from Bulgaria and Potamophylax winneguthi Klapalek, 1902, known from Bosnia and Herzegovina and Serbia. The male of the new species differs from its most similar congeners mainly in exhibiting: (1) elongated subrectangular superior appendages in lateral view; (2) hardly acuminate, almost rounded apex of intermediate appendages; (3) differently shaped, irregular and higher inferior appendages; (4) narrow spinate area, roughly rectangular in dorsal view, slightly wider at the base and (5) different paramere shape and/or spine pattern. The new species also differs by its considerably smaller size and association with open, high altitude eucrenal zones. The uncorrected interspecific pairwise distance between P. coronavirus and other species of the P. winneguthi species group is on par with those amongst other recognised species in the group, as well as with the yet ambiguously identified taxa from the Sharr, Rila and Bajgorë Mountains. The new species is most probably a microendemic of Bjeshkët e Nemuna, thus highlighting further this area as an important hotspot of caddisfly biodiversity in Europe.

A new species of Macrocentrum (Melastomataceae: Merianieae) from Pará, Brazil

We describe Macrocentrum aurimontium (Melastomataceae: Merianieae), a new species that has been collected twice in the state of Pará, Northern Brazil. Macrocentrum aurimontium closely resembles M. latifolium, a species from French Guiana, due to its isomorphic leaves and 4-merous flowers, but differs from it by the eglandular trichomes up to 4 mm long on the adaxial foliar surface (vs. glabrous or deciduously strigulose, then the trichomes 0.1–0.2 mm long in M. latifolium), denticulate to denticulate-serrulate, always ciliate leaf margin (vs. minutely serrulate, eciliate), sepals 0.5–0.7 mm long, triangular to broadly triangular, with an obtuse to rounded apex, the external teeth projecting 0.2–0.5 mm above them (vs. sepals ca. 0.1 mm long, oblate, the external teeth with the same size as the sepals) and the fruits shorter and narrower (2.7–3.7 × 1.2–1.4 mm vs. 4–5.5 × 3.1–4 mm).

Bulbophyllum gedangense (Orchidaceae, Epidendroideae, Malaxideae), a new species from Tibet, China

Bulbophyllum gedangense (Orchidaceae), a new species from Tibet, China, is described and illustrated. It is morphologically similar to B. psychoon and B. levinei, but differs from them by having longer scapes, smaller flowers, sepals subequal in length, ovate dorsal sepal with obtuse apex, obliquely triangular-ovate lateral sepals with acute apex, ovate petals with entire margins and rounded apex.

A new species of Ferorhinella (Hemiptera: Cercopidae) from southeastern Brazil with taxonomic notes on the genus

A new species of Ferorhinella Carvalho & Webb 2004 from southeastern Brazil is described and illustrated, and a taxonomic key to species in the genus is provided. Ferorhinella itatiaiensis sp. nov. can be distinguished from other known species of the genus mainly by the paramere with rounded apex and two subapical lateral spines on outer surface, one long, dorsally inserted and the other one small, ventrally inserted; and dorsal margin of the subgenital plates with a rectangular elevation, covered with small, tooth-like spines.

A new species of Passandra Dalman (Coleoptera: Passandridae) from the Philippines and Borneo

Passandra barsevskisi sp. nov. (Coleoptera: Passandridae) is described and illustrated from Borneo and the Philippines. The new species can be distinguished from all known species of Passandra by the following combination of features: head, pronotum and elytra black; antennomeres 3–10 with narrow groove ventrally, male antennae robust with antennomeres 4–10 swollen; admedian grooves of head deep, long, almost straight, slightly diverging anteriorly; median process of head well developed and reaching occipital groove; pronotal disc with two deep and long admedian grooves; pronotal sublateral lines entire, widely separated anteriorly; submarginal basal groove deeply and narrowly emarginate medially in male, notched in female; each elytron with lines I and VI complete, lines II and V incomplete; and median lobe of aedeagus with triangular apical portion and rounded apex.