Metaeuchromius makintabus Leger 2024, sp. n.
Creators: name: Léger, Théo
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Crambidae
Metaeuchromius
Metaeuchromius makintabus

description: Metaeuchromius makintabus Léger, sp. n.
https://zoobank.org/9A48ACC8-1FF8-457C-A3E8-4600D98D67B6
Figs. 53, 117, 174.
MATERIAL
Holotype: ♂ (specimen identifier coll.mfn-berlin.de_u_868941, DNA voucher MFNLEP-PYRALPHIL07-E07, TL1055♂; BOLD sample ID PYPHI117-21, Genbank Accession Number PP196803). PHILIPPINES: Mindoro, Occidental Mindoro, Mount Baco Pass, 1150 m, 14.01.1998 (W. Mey, V. Samarita). Deposited in MfN.
Paratypes: 2 ♂ (specimen identifiers coll.mfn-berlin.de_u_41e331, 787e37), 1 ♀ (specimen identifier coll.mfn-berlin.de_u_2dafcc) (detailed information in Table S1; https://doi.org/10.5061/dryad.b8gtht7mh)
Other specimens examined: 1 ♂, 1 unsexed (detailed information in Table S1; https://doi.org/10.5061/ dryad.b8gtht7mh).
SIMILAR SPECIES
Metaeuchromius rizali sp. n.
DIAGNOSIS
See diagnosis of Metaeuchromius rizali sp. n. for separation from M. micralis and M. rizali sp. n. based on wing pattern. In male genitalia (Fig. 117), the narrow valva, without costal arm, apical spine, and thick apical setae; the short gnathos projection; and the vesica lacking cornuti allows separation of this species from other Metaeuchromius species. In female genitalia (Fig. 174), the long ductus bursae and the globular corpus bursae without signa enable separation of this species from M. micralis.
HABITUS (FIG. 53)
Forewing length 4.5 mm (n = 1), ground color cream suffused with brown scales, markings amber yellow. Antemedian area amber yellow, with small silver blotch at base of costa. Antemedian band inwardly oblique on costal half, then running straight to dorsum, shiny silver, edged distally with broad amber yellow band. Subapical band starting at 3/4 of costa, running straight to M1 vein, shiny silver. Apical area yellow amber. Faintly marked cream line running in zigzag from CuA1 on margin to 2/3 of dorsum. Termen with dark brown patch with white and amber blotches. Fringes light brown, shiny silver at termen. Hindwing dirty white, with faint patch of marginal brown scales at CuA2. Fringe dirty white, apically copper.
MALE GENITALIA (FIG. 117)
Uncus about 3/5 X tegumen arm length, triangular, with few setae dorso-apically, apex blunt. Gnathos projection very short, pointed, covered with tiny spines. Valva elongate, gently narrowing from basal 1/3 to 2/3, distal 1/3 slender, curved upward; apex narrow, rounded. Juxta base broadly rounded, apex lightly sclerotized. Phallus straight, narrowing towards apex, apex lightly sclerotized; vesica without cornuti.
FEMALE GENITALIA (FIG. 174)
Papillae anales not connected ventrally and dorsally, slightly concave. Antrum and colliculum membranous. Ductus bursae straight, ca 5 X corpus length, distally with scattered spicules. Corpus bursae globular, reticulate, without signum.
DISTRIBUTION
PHILIPPINES: Mindoro, Leyte. Collected at altitudes between 650 and 1150 m.
DNA BARCODING
The species delimitation analysis recovered four different MOTUs from Mindoro, Negros (one MOTU each), as well as Leyte (two MOTUs). Three MOTUs are represented by male specimens with identical genitalia, while genitalia for one MOTU from Leyte were lost during the DNA extraction and thus not investigated. An intraspecific p-distance of 7.3% is found between specimens MFNLEP-PYRALPHIL10-E11 from Negros and MFNLEP-PYRALPHIL07-D11 from Leyte.
ETYMOLOGY
From the Filipino makintab, shiny, referring to the shiny antemedian and subterminal bands of the forewing.
description: Published as part of Léger, Théo, 2024, Half of the Diversity Undescribed: Integrative Taxonomy Reveals 32 New Species and a High Cryptic Diversity in the Scopariinae and Crambinae of the Philippines (Lepidoptera: Crambidae), pp. 1-93 in Bulletin of the Society of Systematic Biologists 3 (2) on pages 75-76, DOI: 10.18061/bssb.v3i2.9527, http://zenodo.org/record/15116964