Chilo infuscatellus (Snellen, 1890)

Figs. 37, 96, 154.

Chilo infuscatellus Snellen 1890: 94 . Type locality: Indonesia, Java

= Argyria sticticraspis Hampson 1919: 449; Gupta 1940: 788; Isaac & Rao 1941: 799; Isaac & Venkatraman 1941: 806 [syn. Kapur 1950].

= Argyria coniorata Hampson 1919: 449 . Fletcher 1928 (syn.).

= Diatraea calamina Hampson 1919: 544; Kapur 1950 (syn.).

= Diatraea auricilia (Dudgeon): Fletcher & Ghosh 1920: 387.

= Diatraea shariinensis Eguchi 1933: 3; Kapur 1950 (syn.).

= Chilo tadzhikiellus Gerasimov 1949: 704; Błeszyński 1962: 111 (syn.).

MATERIAL

3 ♀ (detailed information on Table S1; https://doi.org/ 10.5061/dryad.b8gtht7mh).

DIAGNOSIS

Chilo infuscatellus, also known as the Yellow Top Borer, have narrow brownish forewings medially speckled with dark brown and snow white hindwings. This species can be separated from other Chilo species by the presence of a conspicuous cornutus on the vesica of the male genitalia (Fig. 96). In female genitalia (Fig. 154), the following characters distinguish this species from congeneric species: ostial pouch distincly incised; ductus bursae devoid of swellings and sclerotized markings; corpus bursae with one signum (Anon, 2019; Bleszynski, 1970c).

DISTRIBUTION

AFGHANISTAN; INDIA; INDONESIA, MYANMAR; PHILIPPINES: Luzon (Benguet; Zambales); TAIWAN; TAJIKISTAN; TIMOR (Bleszynski, 1970c). Collected at altitudes between 150 and 500 m on the Philippines.

DNA BARCODING

A maximum intraspecific p-distance of 0.3% is observed between MFNLEP-PYRALPHIL11-B01, MFNLEP-PYRALPHIL11-A01, and MFNLEP-PYRALPHIL11-G01, all from Luzon (Zambales). The haplotypes of Luzon are most closely related to those found in Thailand (see Fig. S2e). A maximum intraspecific divergence of 7.1% is observed in specimen LSTEM114-18 from Java identified as Chilo infuscatellus .

REMARKS

Błeszyński (1970) investigated one female specimen from Klondyke on Luzon, Philippines.