Phaenochilus monostigma Weise 1895

6. Phaenochilus monostigma Weise 1895 Phaenochilus monostigma Weise 1895: 241 (original description); Schultze 1916:38 (catalogue of Philippine Coleoptera). Type material: Holotype, sex unknown (? ECMP). Type locality: “ Agusan River, Mindanao.” Remarks: This is the only species of Phaenochilus with a single common dark sutural spot on the elytra (Fig. 7). The male genitalia are unknown. Weise indicated that the type of this species was from the collection of W. Schultze and was deposited in the collection of the Bureau of Science, Manila. The USNM has a specimen that was acquired with the Korschefsky collection bearing the labels “Mindanao, P. I. / Phaenochilus monostigma Ws. Det W. Schultze ” that may belong to the same series as the type. The specimen is disarticulated and mounted on two points. Recuenco-Adorada (2008) contributed a paper on Philippine Chilocorini, but apparently misidentified or confused some of the species. The included redescription and habitus illustration of P. monostigma portray a specimen with an immaculate elytral disc and narrow black lateral border on the basal two thirds of each elytron. The male genitalia (lateral views of the sipho and phallobase) and anatomical details incorporated on the same plate suggest instead the species P. punctifrons, although we have not seen a comparable example with the dark elytral border. In the same publication, another plate labeled Eguis sp. shows a specimen which matches the USNM example of P. monostigma in such details as the dorsal color pattern and the shape of the maxillary palpomeres, antenna, pronotum, prosternum, abdominal postcoxal line, and tarsal claw.
Published as part of Giorgi, José Adriano & Vandenberg, Natalia J., 2012, Review of the lady beetle genus Phaenochilus Weise (Coleoptera: Coccinellidae: Chilocorini) with description of a new species from Thailand that preys on cycad aulacaspis scale, Aulacaspis yasumatsui Takagi (Hemiptera: Sternorrhyncha:, pp. 239-255 in Zootaxa 3478 on page 251
{"references":["Weise, J. (1895) Neue Coccinelliden sowie Bemerkungen zu bekannten Arten. Annales de la Societe Entomologique de Belgique, 39, 120 - 146 (in German).","Schultze, W. C. M. (1916) A catalogue of Philippine Coleoptera. Philippine Journal of Science. Section D, General Biology, Ethnology, and Anthropology, 11 (1 - 2), 194.","Recuenco-Adorada, J. D. (2008) Systematics of Philippine Chilocorinae. I. Tribe Chilocorini (Coleoptera: Coccinellidae). Philippine entomologist, 22 (2), 147 - 162."]}