Metaeuchromius makintabus Léger, 2024

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), Bulletin of the Society of Systematic Biologists 3 (2), pp. 1-93 : 75-76

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.

Figures

Figs 48-55. Wings of Catoptria, Culladia, Metaeuchromius and Microchilo species. Fig. 48. Catoptria philippinensis sp. n., ♂, paratype, specimen coll.mfn-berlin.de_u_78302c, right half. Fig. 49. Culladia hastiferalis (Walker, 1865), specimen coll.mfn-berlin.de_u_656531, right wing. Fig. 50. Culladia pseudoscoparia sp. n., specimen coll.mfn-berlin.de_u_893233, right wing. Fig. 51. Metaeuchromius micralis comb. nov., ♀, specimen coll.mfn-berlin.de_u_5b3516, right wing. Fig. 52. Metaeuchromius rizali sp. n., specimen MTD11447, right wing. Fig. 53. Metaeuchromius makintabus sp. n., specimen coll.mfn-berlin.de_u_868941, ♂, holotype, right wing. Fig. 54. Microchilo bundoki sp. n., ♂, holotype, specimen coll.mfnberlin.de_u_b4f995, right wing. Fig. 55. Microchilo cebuano sp. n., ♀, paratype, specimen coll.mfn-berlin.de_u_c18ec0, left wing (mirrored).

Figs 112-117. Male genitalia of Culladia and Metaeuchromius species. Fig. 112. Culladia tonkinella Bleszynski, 1970, slide TL1305♂. Fig. 113. Culladia suffusella Hampson, 1896, slide NHMUK n° 18909. Fig. 114. Culladia pseudoscoparia sp. n., holotype, slide TL916♂. Fig. 115. Metaeuchromius micralis (Hampson, 1919) comb. nov., slide TL1354♂. Fig. 116. Metaeuchromius rizali sp. n., holotype, slide TL1229♂. Fig. 117. Metaeuchromius makintabus sp. n., holotype, slide TL1055♂.

Figs 172-175. Female genitalia of Culladia, Metaeuchromius and Microchilo species. Fig. 172. Culladia sp., slide TL1320♀. Fig. 173. Metaeuchromius micralis (Hampson, 1919) comb. nov., slide TL997♀. Fig. 174. Metaeuchromius makintabus sp. n., paratype, slide TL1056♀. Fig. 175. Microchilo bundoki sp. n., paratype, slide TL944♀.