Philodoria, Walsingham, 1907

Kobayashi, Shigeki, Johns, Chris A. & Kawahara, Akito Y., 2021, Revision of the Hawaiian endemic leaf-mining moth genus Philodoria Walsingham (Lepidoptera: Gracillariidae): its conservation status, host plants and descriptions of thirteen new species, Zootaxa 4944 (1), pp. 1-175 : 90

Philodoria sp. 1 of Johns et al. (2018)

Fig. 59F, G , 76 , 87E , F.

Philodoria sp. 1; Johns et al. (2018): fig. 2.

Material examined. 3♀, 2 (sex unknown), Ulupalakua Ranch, Maui, 6–11.viii.2014 (stored), C.A. Johns leg., host: Dubautia menzesii , 23.vii.2014, CJ328 / SK 835♀, CJ334 (1♀, 2 sex unknown, only photos), CJ364 /PHIL0021 ♀, in BPBM. The five specimens are all partial and none we felt were eligible as a type specimen, but we consider it distinctive enough and worth describing. What remains of the specimens, CJ328 was mounted as a dry pinned specimen with unspread wings, which has poor condition (stored originally in RNAlater solution); CJ364 only has the genitalia and abdomen remaining. CJ344 was entirely sacrificed for the molecular analysis of Johns et al. (2018) .

Diagnosis. Among Philodoria species having similar ds 2 at middle connecting basal patch i.e., P. keahii , sp. n., P. funkae sp. n., P. pittosporella (Swezey) , Philodoria sp. 1 is distinguished by the narrowing and straight basal patch and pale orange or brown apical portion of the forewing ( Fig. 76 ).

Description: Adult ( Fig. 76 ). Forewing length <2.0 mm, specimen examined was very damaged. Descriptions of the forewing was based on photographs of adult moths (CJ344). Head and frons white; maxillary palpus present; labial palpus white, basal half with ocherous scales. Antenna dark fuscous and same length as forewing. Thorax white and dark brown at lateral side. Forewing dark brown with three outwardly oblique white streaks: cs 3 at 4/5; ds 2 at about 1/2, ds 3 at 2/3; a narrowing white band from base to 1/2 along dorsal margin, connecting a ds 2; all streaks bordered with black scales; apical portion orangish brown and white at center with three costal white lines (a, b, c) at apical cilia; a fuscous spot at apex (as); a fuscous patch at dorsal 3/4; cilia fuscous, bl 1 of terminal cilia orangish brown, tornal cilia interruputed with two white lines. Hindwing and cilia fuscous. Abdomen fuscous, yellow ground color, tuft white.

Male genitalia. Unknown.

Female genitalia. ( Fig. 59F, G ) (n=2). 1050 µm long. Ostium bursae large; antrum cup-shaped with a pair of lateral lobes,; lamella antevaginalis 180–190 µm, weakly sclerotized, indented near the posterior margin, widening toward anterior margin of A7. Ductus bursae rather broad, middle part weakly sclerotized, round and flat; terminus of ductus bursae tubular, biforked. Corpus bursae 530 µm, oblong; paired rows of longitudinal, partly sclerotized wrinkles.

Distribution. Maui.

Host plants. Asteraceae : Dubautia menzesii (A. Gray) D.D. Keck

Biology. ( Fig. 87E, F ). Larvae form a linear mine along the leaf margin making a near complete oval shape. As the larva grows, the mine turns into a blotch.

Figures

FIGURE 59. Female genitalia of Philodoria. A P. neraudicola, paralectotype, Oahu, SK708, host: Neraudia melastomifalia, B Same species, Maui, SK838, host: Pipturus albidus, C P. obamaorum, paratype, Hawaii (Big Island), SK710, host: Pipturus albidus, D Same species, Hawaii (Big Island), SK844 host: Pipturus sp., E P. urerana, paralectotype, SK672, F Philodoria sp. 1, SK835, G Same species, PHIL0021, H P. keahii, paratype, SK756, I P. funkae, holotype, SK761, J P. touchardiella, SK764, K P. keaensis, holotype, Hawaii (Big Island), SK777, L P. hauicola, Oahu, SK618.

FIGURE 76. Resting posture of adult Philodoria sp. 1 on Dubautia menzesii, Maui (CJ334). A dorsolateral view, B dorsal view, C lateral view, D lateral view with wings held open.

FIGURE 87. Philodoria species on leaves of the host plant, Dubautia. A–D: Unidentified Philodoria species, nr. P. naenaeiella or related species. E, F: P. sp. 1 of Johns et al. (2018), Maui, host: Dubautia menziesii G–I: P. platyphylliella, Maui, host: Dubautia platyphylla. A D. plantaginea Waihee Valley, Maui, CJ371, one adult (sex unknown) did not emerge, B–D D. laxa Konahuanui, Oahu, all larvae were consumed by parasitoids, CJ208, 242, 248.