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| Megachile (Callomegachile) sirindhornae Chatthanabun & Warrit, in Chatthanabun, Voraphab, Thanoosing, Traiyasut et Warrit, 2025. Tropical Natural History. Suppl. 8; 359-367. |
Abstract
During the revision of the resin bees subgenus Callomegachile Michener, 1962 in Thailand, we have identified and illustrated a novel species, Megachile (Callomegachile) sirindhornae Chatthanabun & Warrit, sp. nov. This discovery is based on three female specimens collected from northeastern and western regions of Thailand. The species exhibits an association with Akschindlium godefroyanum (Kuntze) H. Ohashi (Fabaceae), which serves as a floral resource. Additionally, the barcode sequence derived from the COI region of this new species has been submitted to GenBank, with the accession number PX354073.
Keywords: wild bee, taxonomy, resin bee, DNA barcode
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| Megachile (Callomegachile) sirindhornae sp. nov., Holotype, female, A. frontal view of prosoma showing labrum, B. dorsal view, C.dorsal view of scutum showing striated punctures, D. T6 covered with brick-red hairs, E. lateral view, F. striated punctures on the lower part of mesepisterna. |
Megachile( Callomegachile) sirindhornae Chatthanabun & Warrit, sp. nov.
Diagnosis.–Female resembles M.(Callomegachile) albobasalis Smith, 1879, in overall appearance: black body; metasoma covered with brick-red hairs on apex (Fig. 1B, E); scopa brick-red hairs (Fig. 1E) except fore-and hindwing light yellow hyaline with brown vein(Fig. 1B, E); T1 without white hairs; inner side of tarsi covered black hairs.
Etymology.–The species is named in honor of the auspicious occasion of H.R.H. Princess Maha Chakri Sirindhorn's 70th birthday anniversary, celebrated on April 2nd, 2025.
Common name.–Sirindhorn’s resin bee (Thai: ผึ้งยางไม้เจ้าฟ้าหญิงสิรินธร)
Nontawat Chatthanabun, Itsarapong Voraphab, Chawatat Thanoosing, Prapun Traiyasut and Natapot Warrit. 2025. A New Species of Megachile (Callomegachile) Michener, 1962 (Hymenoptera: Megachilidae) Described from Thailand. Tropical Natural History. Suppl. 8; 359-367. DOI: doi.org/10.58837/tnh.25.8.266718 [2025-10-20]