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

description: Calamotropha anacantha Léger, sp. n.
https://zoobank.org/ 2AAA12CE-207D-4311-A5EB-0FF4658D6D1E
Figs. 43, 106, 166.
MATERIAL
Holotype: 1 ♂ (specimen identifier coll.mfn-berlin.de_u_1609c7, DNA voucher MFNLEP-PYRALPHIL07-G08, genitalia on slide TL1064♂; BOLD sample ID PYPHI142-21, Genbank Accession Number PP196827). PHILIPPINES: Luzon, Isabela, Sierra Madre, 22 km NW of Dinapique, logged primary forest, 700 m, 04.09.2006 (J. H. Lourens).
Paratypes: 2 ♀ (specimen identifiers coll.mfn-berlin.de_u_b5fe44, 280927) (detailed information in Table S1; https://doi.org/10.5061/dryad.b8gtht7mh).
SIMILAR SPECIES
Calamotropha tonsalis (Walker, 1863), C. albistrigellus (Hampson, 1896).
DIAGNOSIS
This species is conspicuously larger than other Calamotropha species found in the Philippines (♂ = 13 mm, ♀ = 15-17 mm). The forewings (Fig. 43) are brownish and reminiscent of Chilo or Ancylolomia species at first glance. However, the forewing of this species is broader and bears a conspicuous, postmedian, broken, brown line bent outwardly up to M1 vein, there angled at 100° and running towards dorsum. This species is externally undistinguishable from Calamotropha tonsalis found in Borneo and can be only confidently identified by examination of genitalic features. In male genitalia (Fig. 106), the vesica lacks the large cornutus found in C. tonsalis, and the gnathos is slightly shorter than the uncus, while it is as long as the uncus in C. tonsalis. Female genitalia (Fig. 166) are very similar, but the straight posterior apophyses with dorsal bump possibly separate this species from C. tonsalis. This species also resembles C. albistrigellus (type locality: Bonin island), but the apex of the valva is notched in the latter, and the gnathos is as long as the uncus.
HABITUS (FIG. 43)
Forewing length 13 mm (♂, n = 1), 15-17 mm (♀, n = 2); ground color cream to light brown, speckled with darker scales. Antemedian cell spot faintly marked, dark brown. Broad, dark brown fascia on cubital area running from base up to postmedian area. Two postmedian faintly marked dark brown dots. Postmedian line dark brown, dashed, directed outwards up to M1 vein, there angled at 100°, running downwards to dorsum. Thin dark brown margin with five small triangular spots at veins towards tornus. Hindwing cream, suffused with light brown.
MALE GENITALIA (FIG. 106)
Uncus ca 5/6 of tegumen arm length, narrow, slightly curved downwards, glabrous, apex rounded. Gnathos arms laterally bearing tuft of sclerotized setae; gnathos projection ca 5/6 of uncus length, narrow, glabrous, slightly curved upwards, with rounded apex. Tegumen arms short, stout. Valva short, stout; ventral margin straight in basal half, bent upwards on distal half; dorsal margin slightly convex; apex with patch of setae, ending in a short tooth. Pseudosaccus present. Phallus slender, slightly arched. Vesica covered with tiny spines.
FEMALE GENITALIA (FIG. 166)
Posterior apophyses ca 1.5 X length of tergite VIII, basally broad, at midlength with a dorsal bump. Anterior apophyses ca half of length of tergite VIII, with dorsal bump at base. Antrum forming a strongly sclerotized ring. Colliculum broad, marked with sclerotized, longitudinal lines. Ductus bursae at base with a small membranous pouch, straight, about twice the length of corpus bursae. Corpus bursae ovoid, reticulate devoid of signum.
DISTRIBUTION
PHILIPPINES: Luzon (Isabela), Marinduque. Collected at altitudes between 400 and 700 m.
DNA BARCODING
Two MOTUs were recovered in the species delimitation analysis, one for the two specimens from Eastern Luzon and one for the female specimen from Marinduque. A p-distance of 2.6% is found between MFNLEP-PYRALPHIL08-B12 (Luzon, Isabela) and MFNLEP-PYRALPHIL08-A11 (Marinduque).
ETYMOLOGY
From the Greek a-, an-, without, and acantha, spine, referring to the absence of thorn on the corpus bursae of female genitalia.
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 59-60, DOI: 10.18061/bssb.v3i2.9527, http://zenodo.org/record/15116964