Two new species of the ant genus Myrmecina (Hymenoptera: Formicidae: Myrmicinae) from Sumatra

Abstract

Two new species of the ant genus Myrmecina Curtis, 1829 are described and illustrated based on the worker and queen castes collected in Sumatra, Indonesia under the names M. andalas sp. nov. and M. nitidiuscula sp. nov. Each species displays unique morphological characteristics. Myrmecina andalas sp. nov. is characterized by a combination of the following characteristics: head dorsally sculptured, with the ventrolateral area smooth and shiny; propodeal spine short, triangular, pointing dorsad and with a broad base; propodeal declivity vertical, with the posterodorsal angle almost 90°. Myrmecina nitidiuscula sp. nov. is characterized by a combination of the following characteristics: head dorsum largely smooth and shiny; propodeal spine triangular and pointing posteriad, with a very broad base. Updated key to Myrmecina species of Sumatra is given.

A new species of the genus Myrmecina Curtis, 1829 (Formicidae: Myrmicinae) from Sumatra

“…parallela Okido et al, 2020;M. undulata Emery, 1900. In our course of inventory and taxonomic studies of ants in Sumatra, we have described new species and recorded species new to Sumatra (Satria et al, 2015;Satria et al, 2017;Satria & Yamane, 2019;Satria & Herwina, 2020;Satria & Jannatan, 2021;Musfira et al, 2022;Satria et al, 2022), and we herein described a new species of the genus Myrmecina.…”

“…The following parts of the bodies were measured using ImageJ 1.49m (National Institute of mental Health, USA, available at http://imageJ.nih.gov/ij/) based on the photographs taken using a Canon EOS KissX5 digital camera attached to the Nikon SMZ1270 stereomicroscope under suitable magnifications. Measurements and morphological terminology follow Terayama (1996), Shattuck (2009), Wong and Guenard (2016), Satria & Yamane (2019) and Okido et al (2020).…”

“…magnificens Wong et Guénard, 2016, M. mahuana Okido et al, 2020M. nesaea Wheeler, 1924; M. nitidiuscula Satria et Yamane, 2019;M. padangensis Okido et al, 2020;M.…”

Dealate queens of the ant genus Eurhopalothrix Brown et Kempf, 1961 (Hymenoptera: Formicidae: Myrmicinae) from Sumatra

“…The diversity of ants in Sumatra is poorly studied, except for several genera (Terayama & Yamane, 1989;Agosti, 1992;Satria et al, 2015Satria et al, , 2017Satria & Yamane, 2019;Satria & Herwina, 2020). The genus Eurhopalothrix Brown et Kempf, 1961 (Myrmicinae: Attini) is easily distinguished from the other myrmicine genera by its 7-segmented antenna and triangular mandibles (Brown & Kempf, 1961;Taylor, 1980;Bolton, 2003).…”

New Distribution Record of Ants Species (Hymenoptera: Formicidae) to the Fauna of Sumatra Island, Indonesia

“…To date, a comprehensive Sumatran ant list is currently unavailable, except from Antwiki [2] based on the studies of ants for few decades in Sumatra [3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22]. Recently, two more species were described from this island by Satria and Yamane [23]. Then total of ants species in Sumatra is 600 species [24].…”