Dorcus titanus subsp. castanicolor

Dorcus titanus castanicolor Materials Type status: Other material. Occurrence: sex: 1 gynandromorph; occurrenceID: 09268E7D-25D3-5F13-A399-753809D0B384; Taxon: genus: Dorcus; specificEpithet: titanus castanicolor; scientificNameAuthorship: (Motschulsky, 1861); Location: country: South Korea; locality: Hyeongsu Kim leg.; Event: eventDate: VII.2019 (breed); Record Level: basisOfRecord: Preserved Specimen Type status: Other material. Occurrence: sex: 1 female; occurrenceID: 9E55012A-86F6-5022-A53D-93EF9D0DF949; Taxon: genus: Dorcus; specificEpithet: titanus castanicolor; scientificNameAuthorship: (Motschulsky, 1861); Location: country: South Korea; stateProvince: Chungcheongbuk-do; locality: Chupungryeong, Chupungryeong-myeon, Yeongdong-gun, Seung Mo Lee Coll.; Event: eventDate: 29.VII.1972; Record Level: basisOfRecord: Preserved Specimen Type status: Other material. Occurrence: sex: 1 male, 1 female; occurrenceID: 95F2493E-FB09-5626-8E45-ECAC995F39D8; Taxon: genus: Dorcus; specificEpithet: titanus castanicolor; scientificNameAuthorship: (Motschulsky, 1861); Location: country: South Korea; stateProvince: Jeollanam-do; locality: Is. Jindo, Jukrim-ri, Imhoe-myeon, Jindo-gun, Donguk Kim leg.; Event: eventDate: 4.VIII.2020; Record Level: basisOfRecord: Preserved Specimen Description Morphology of the gynandromorph Dorcus titanus castanicolor The body primarily exhibits female traits (Fig. 6). The head shows asymmetrical dimorphism, with the left side resembling a male and the right side resembling a female (Fig. 7). The surface of the head appears irregular, featuring patchy punctures. Male-type punctures are predominantly located on the left side, while female-type punctures are predominantly located on the right (Fig. 7). The mandibles are asymmetrical, with the left side more developed. The left antenna is slightly larger (Fig. 7). In the central area of the left side of the pronotum, male-type punctures appear in a patchy pattern (Fig. 7). The legs exhibit only female characteristics (short, with a rather wide protibia) (Fig. 6). The genitalia are fully developed and identical to a typical ovipositor (Fig. 8). Notes In D. titanus castanicolor, the prominent male sexual characteristics include well-developed mandibles, a non-projected canthus, a subrectangular pronotum and relatively long tarsi (Fig. 6). In the observed specimen, most body traits, including the legs and genitalia, exhibited female morphological characteristics. However, irregular patches of both male-type and female-type punctures were noted on the head and pronotum (Figs 6, 7, 8). Hence, this specimen was classified as a gynandromorph. This is the first record for this subspecies.