A new species,
Tricosa uniseriata
sp. nov.
, is described here. A list of
Tricosa
species found in Thailand with distributions and an updated key to
Tricosa
are also provided.
The ambrosia beetle genus Anisandrus Ferrari, 1867, is a member of the bark and ambrosia beetle subfamily Scolytinae, Tribe Xyleborini. Currently, it is comprised of 40 species of which four species ...were recorded in Laos. A new species, Anisandrus bolavenensis sp. nov. is described from the Bolaven Plateau in southern Laos. With the inclusion of the species described and recorded here, the diversity of Anisandrus is increased to 41 species, of which five occur in Laos. New distribution records, a synoptic list and a key to the Anisandrus of Laos PDR are presented.
Five new species,
Anisandrus montanus
sp. nov.
,
A. phithakpa
sp. nov.
,
A. tanaosi
sp. nov.
,
A. triton
sp. nov.
, and
A. uniseriatus
sp. nov.
are described from Thailand.
Anisandrus carinensis
...(Eggers, 1923) is reported from Thailand for the first time and
A. apicalis
is removed from the Thai fauna. With the inclusion of the species described and recorded here, the diversity of
Anisandrus
is increased to 40 species, of which 11 occur in Thailand. A synoptic list and a key to the
Anisandrus
of Thailand are presented.
We describe a new genus, Infrantenna gen. nov. and a new species Infrantenna fissilis gen. et sp. nov., from Thailand and briefly review the Oriental genera currently placed in the tribe Xyloperthini ...Lesne, 1921. A key to the Oriental genera of Xyloperthini is provided.
The millipede genus
Mršić, 1996, so far monospecific and previously known only from Park Belum, Perak State, northern Malaysia, is recorded from a mountain in Betong District, Yala Province, southern ...Thailand for the first time, being represented there by two new species:
and
Both new species are found to occur syntopically and can be assumed as narrowly endemic to the Titiwangsa Mountain Range which begins in southern Thailand, crosses the Malaysian border, and extends into east and west coast regions of the Malay Peninsula. In addition, the generic diagnosis is slightly updated, and a key to all three species is provided.
The ambrosia beetle morphologically identified as Euwallacea fornicatus consists of several cryptic species that exhibit large differences in the DNA sequences of several nuclear and mitochondrial ...gene regions.
Based on these differences, we suggest that there are at least three different species each with distinct phylogeography.
Members of this cryptic species complex have invaded many areas outside their native range and cause substantial damage to both agriculture (avocado in particular) and other tree species.
Three of these cryptic species have invaded the USA: two species in California and a third species in both Florida and Hawaii.
Identification of their native range allows directed search for their natural enemies that may be used in biological control of these tree pests.
Three new species of velvet ants known from females are here described:
Mickelomyrme leleji
Sittichaya & Williams,
sp. nov.
,
Nordeniella dokbua
Sittichaya & Williams,
sp. nov.
, and
Smicromyrme ...songkhwae
Sittichaya & Williams,
sp. nov.
One additional species is newly recorded from Thailand:
Bischoffitilla selangorensis
(Pagden). Synoptic list of Mutillidae in Thailand Natural History Museum with new records is given.
DNA holds great potential for species identification and efforts to create a DNA database of all animals and plants currently contains >7.5 million sequences representing ~300,000 species. This ...promise of a universally applicable identification tool suggests that morphologically based tools and taxonomists will soon not have utility. Here we demonstrate that DNA-based identification is not reliable without the contributions of taxonomic experts. We use ambrosia beetles (Xyleborini), which are known for great diversity as well as global invasions and damage, as a test case. Recent xyleborine introductions have caused major economic and ecological losses, thus timely species identifications of new invaders are necessary. This need is hampered by a paucity of identification tools and a fauna that is only moderately documented. To help alleviate deficiencies in their identification, we created COI and CAD DNA barcode databases (490 and 429 specimens), representing over half of the known fauna of Southeast Asia (165/316 species). Taxonomic experts identified species based on original descriptions and type specimens. Tree, distance, and iterative methods were used to assess the identification and delimitation of species. High intra- and interspecific COI distances were observed for congeneric species and attributed to the beetle's inbreeding system. Neither of the two markers provided 100% identification success but with the neighbor-joining tree-based method, 80% of species were identified by both genes. As for species delimitation, an obvious barcode gap between intra- and interspecific differences was not observed. Correspondence between distance-based groups and morphology-based species was poor. In a demonstration of iterative taxonomy, we constructed parsimony-based phylogenies using COI and CAD sequences for two genera. Although not all clades were resolved or supported, we provided better explanations for species boundaries in light of morphological and DNA sequence differences. Confident species identifications demonstrated <3% COI and <1% CAD difference and recognition of new species became more probable when there was >10–12% COI and/or >2–3% CAD. Involvement of taxonomic experts from the start of this project was essential for the creation of a stable foundation for the DNA identification of xyleborine species. In general, their role in DNA barcoding cannot be underestimated and is further discussed.
A new species,
Cnestusquadrispinosus
, is described from Thailand, Brunei Darussalam, and East Malaysia (Sabah). It is compared to three related species of
Cnestus
which lack a mycangial tuft of ...hairs on the pronotum, and have an impressed elytral declivity.
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