Ngirhaphium caeruleum Grootaert & Puniamoorthy, 2014

Samoh, Abdulloh, Satasook, Chutamas & Grootaert, Patrick, 2019, NGS-barcodes, haplotype networks combined to external morphology help to identify new species in the mangrove genus Ngirhaphium Evenhuis & Grootaert, 2002 (Diptera: Dolichopodidae: Rhaphiinae) in Southeast Asia, Raffles Bulletin of Zoology 67, pp. 640-659 : 644

Ngirhaphium caeruleum Grootaert & Puniamoorthy, 2014

( Fig. 2D , 10C )

Ngirhaphium caeruleum Grootaert & Puniamoorthy, 2014: 154 (figs. 11, 12, 13–16, 19). Type locality Semakau.

Diagnosis. A larger species with mesonotum and tergites shining metallic blue. Apical aristal segment thin, slightly longer than basal aristal segment. Male with dorsal and ventral surstylus fused at the right side, separated at the left side. Cerci long, but shorter than the surstyli so that they are concealed between the surstyli.

Material examined. Singapore: Semakau Island : 253 specimens (103 specimens NGS barcoded, LKCNHM)

Brunei: Tutong, Berambang, and Labu more than 800 specimens (476 specimens barcoded, LKCNHM) .

Distribution. Singapore and Brunei.

Figures

Fig. 2. Ngirhaphium caeruleum-complex. View of inside of the dorsal surstylus of the left side and the fused dorsal and ventral surstyli of the right side. Scale = 0.1mm. A, green caeruleum from Tutong, Brunei (ZRCBDP0066395) at 1.6 % from the Semakau population; B, green caeruleum from Pulau Tekong, Singapore (ZRCBDP0001462) at 0.6% from the Semakau population; C, green caeruleum from Pulau Ubin, Singapore (ZRC_BDP_0084430) at 0.6% from the Semakau population; D, blue caeruleum from the type locality on Semakau Island, Singapore (ZRCBDP0118762); E, green thaicum, new species from Surat Thani, Thailand (24-018) at 4.2% from the Semakau population; F, green thaicum, new species from Cambodia (JP3C_Ngi-cambodiensis_Misc002) within the variability of the southern Thailand populations.

Fig. 10. Haplotype network of Ngirhaphium murphyi. Singapore: Pulau Ubin, Mandai Sungei Buloh; Thailand: Satun and Krabi.