Abstract. Trianto M, Purwanto H. 2020. Morphological characteristics and morphometrics of Stingless Bees (Hymenoptera: Meliponini) in Yogyakarta, Indonesia. Biodiversitas 21: 2619-2628. Stingless bees (Apidae: Meliponinae) are eusocial insects living together in a colony with a highly organized system. Also, these bees have morphological and morphometric characters that vary among species, islands, and environmental types. This paper described morphological characteristics and morphometric study of stingless bees from the Special Region of Yogyakarta Province, Indonesia. There were seven species of stingless bees found in the Special Region of Yogyakarta, namely Tetragonula laeviceps, T. iridipennis, T. biroi, T. sapiens, T. sarawakensis, Lepidotrigona terminata, and Heterotrigona itama. The morphometry of the stingless bees obtained in this study has varying sizes compared to the same species that have been reported elsewhere. In this study, we described the morphological and morphometric characteristics of the seven species of stingless bees in the Special Region of Yogyakarta Province, Indonesia, and presented the PCA analysis to figure out the grouping characters in order to determine its diagnostic characters.

Abstract. Purwanto H, Soesilohadi RCH, Trianto M. 2022. Stingless bees from meliponiculture in South Kalimantan, Indonesia. Biodiversitas 23: 1254-1266. Kalimantan Island has many species of stingless bees that are widespread throughout the province. However, their morphology, morphometry, and nest structure characteristics have not been documented comprehensively. This paper described the morphological characters, morphometric measurements, nest entrance, and brood cell characteristics of stingless bees from meliponiculture in South Kalimantan, Indonesia. Ten stingless bee species were identified based on their morphological features: Tetragonula laeviceps (Smith, 1857), T. fuscobalteata (Cameron, 1908), T. drescheri (Schwarz, 1939), T. melanocephala (Gribodo, 1893), T. biroi (Friese, 1898), Homotrigona apicalis (Smith, 1857), H. canifrons (Smith, 1857), Heterotrigona itama (Cockerell, 1918), Geniotrigona thoracica (Smith, 1857), and Lepidotrigona terminata (Smith, 1878). Principal component analysis was performed to identify the grouping characters and thus determine their diagnostic characters. Furthermore, the shape, diameter, length, ornamentation, and color of the nest entrance and the arrangement, cells, and color of brood cells were observed. This study is the first to report high variations in the type of entrance opening and arrangement of brood cells for stingless bee species, which are abundant in South Kalimantan.

Systematics of bees has developed rapidly. Several studies have attempted to infer the kinship between each group of bee. One way is the use of phylogenetic analysis using molecular data. This study explains the phylogenetic relationship of stingless bees in the Special Region of Yogyakarta, Indonesia based on the 16S rRNA gene. The research has been carried out in five districts and cities in the region from June to September 2019. In the study, the stages implemented include; place determination of stingless bees sampling, sampling, and molecular identification (DNA extraction, DNA amplification, and sequencing), followed by the data analysis using NCBI database and MEGA X software. The result of this study indicated that among seven morphospecies from Yogyakarta, there are six species of stingless bees that have a closest genetic relationship with the same species data from Genbank, namely Tetragonula laeviceps, T. iridipennis, T. sapiens, T. sarawakensis, Lepidotrigona terminata, and Heterotrigona itama. Since the genetic distances of T. laeviceps, T. iridipennis, T. sapiens, are wider than 3,5%, the data indicate that there is a possibility that the three morphospecies are actually belong to a different species with a similar morphology. Meanwhile, for the morphospecies T. biroi, the closest hit is on T. pagdeni 16S rRNA DNA because the T. biroi 16S rRNA DNA data is not available on the database. This study is expected to contribute to the preservation and utilization of one of Indonesia's important biodiversity resources.

Abstract. Trianto M, Purwanto H. 2021. Diversity, abundance, and distribution patterns of stingless bees (Hymenoptera: Meliponini) in Yogyakarta, Indonesia. Biodiversitas 23: 695-702. Stingless bees (Hymenoptera: Meliponini) are eusocial insects with high economic value in terms of their honey and propolis yield. The bees are widely distributed in tropical regions, including Indonesia. This study aimed to estimate the diversity, abundance, and distribution pattern of stingless bees in the Special Region of Yogyakarta Province, Indonesia. The following seven species of stingless bees have been identified in previous research: Tetragonula laeviceps, T. iridipennis, T. biroi, T. sapiens, T. sarawakensis, Heterotrigona itama, and Lepidotrigona terminata. The current work determined the scores of diversity (H’: 0.98), abundance (N: 14.0 ind/m2), and distribution pattern (id: 0.51) of stingless bees in Yogyakarta, Indonesia. The results were analyzed and then subjected to principal component analysis to determine the dominant characteristics on the basis of the environmental parameters that influence the presence of stingless bees in three habitat types in the Special Region of Yogyakarta Province, Indonesia. Results revealed that temperature is one such environmental parameter affecting the presence of stingless bees in the Special Region of Yogyakarta, Indonesia.

Abstract. Sutrisnawati, Ramadhan A, Trianto M. 2022. Molecular identification of Oncomelania hupensis lindoensis, snail intermediate hosts of Schistosoma japonicum from Central Sulawesi, Indonesia. Biodiversitas 23: 5989-5994. Schistosomiasis is a zoonotic parasitic disease with Oncomelania hupensis lindoensis, intermediate snail hosts of Schistosoma japonicum. The spread of O. hupensis lindoensis snail habitat was found in the three areas of the Napu, Bada, and Lindu Highlands with an infection rate above 1%. Oncomelania hupensis lindoensis  is primarily cryptic species that are morphologically difficult to identify and distinguish from other species. Consequently, it can be confused with the naming of species. One of the molecular approaches that can be used to identify the Oncomelania spp. quickly and accurately is DNA barcoding using the COI mitochondrial gene. However, the research on identifying Oncomelania spp. in Indonesia is still very limited. Therefore, this study aimed to identify six Oncomelania spp. from Napu and Lindu, Central Sulawesi using COI mitochondrial gene as a molecular marker for DNA barcoding. The method used in this study was a Polymerase Chain Reaction (PCR) method with universal primers, LCO-F and HCO-R. The data obtained were then analyzed using GeneStudio, DNASTAR, BLAST, Identification Engine, Mesquite, MEGAX, and BEAST. The analysis was conducted to obtain similarity, genetic distance and reconstruct a phylogenetic tree. The result revealed that all six samples of Oncomelania spp. collected from Napu and Lindu were identified in one species, namely Oncomelania hupensis lindoensis. This research is very important to be carried out regularly periodically so that it can be used as a basis for Schistosomiasis control program data and related sectors to eradicate snails effectively, efficiently, and on target.