Hirotophora dividua (Nakayama) Ament, 2018

Ament, Danilo César, 2018, Taxonomic revision of the genus Hirotophora Brown et al. (Diptera: Phoridae) with the description of a new species from Chile, Zootaxa 4394 (4), pp. 549-558 : 552-553

Hirotophora dividua (Nakayama) , new comb.

( Figs 2 , 6, 7, 12 , 16, 17 , 21, 26, 27 , 38, 39 )

Chaetopleurophora dividua Nakayama, 2007

Diagnosis (female) Tergite 5 with long angulated spiracle openings; tergite 6 with pair of semicircular spiracle openings. (male). General body color brown to dark brown; transverse setal ctenidia of hind tibia not reaching its anterior face.

Material examined. JAPAN: 6♂, Iware Pref. Mt. Hayachine, 25.vii.1989, Malaise trap, 400m, Makihara & Sharkey col. ( LACM) ; 4♂ and 1♀, Honshu Iwate, 19.vii.1989, A. Takeno col. ( LACM) ; 1♂ Hokkaido, Jozankei , 42.97°N 141.17°E, 20–31.vii.1989, Malaise trap, K. Maeto & M. Sharkey col. ( LACM) ; 1♂, same but 11.vii.1989; 1♀, Iwate Mt. Hayachine , 39.55°N 141.5°E, 19.vii.1989, Malaise trap, 400m, Makihara & Sharkey col. ( LACM) ; 2♂ and 2♀, Kyushu, Fukuoka, Nishi-ku, Motooka , 33°35’N 131°12’E, 12–29.v.2010, Malaise trap, 50m, H. Nakayama col. ( DBRP) ; 2♂ and 2♀ same but (MZSP). THAILAND: 1♀, 70km SW Chiang Mei. Doi Inthanon N.P., 29.iv–7.v.1990, Malaise trap, 1700m, E.R. Fuller col. ; 1♀, Chiang Mai Doi Inthanon NP, 18.58°N 98.48°E, 7– 12.v.1990, Malaise trap, 1700m, E. Fuller col. ( LACM) .

Geographical distribution. Known from low and middle elevation sites in Japan and Thailand.

Comments. The pair of developed internal glands in Hirotophora dividua are illustrated here for the first time ( Fig. 12 ). They are connected to the flap-like spiracle openings. No such structure could be found in the other species of the genus and its function is uncertain. The phallus of this species differs from others by its epiphallus scales with several-pointed tips ( Figs 38–39 ).

Figures

FIGURE 1–2. 1. Hirotophora chilensis sp.n. female habitus, holotype. Scale bar = 1mm. 2. Hirotophora dividua female habitus.Scale bar = 1mm.

FIGURES 4–13. Hirotophora abdominal structures. 4, 5, H. chilensis abdomen in lateral and dorsal view; 6, 7, H. dividua abdomen in lateral and dorsal view; 8, 9, H. multiseriata abdomen in lateral and dorsal view; 10, H. chilensis abdominal segments 3–5 in lateral view; 11, H. multiseriata abdominal segments 3–5 in lateral view; 12, H. dividua flap-like spiracle opening of segment 6 and internal gland externalized; 13, H. chilensis segments 6 and 7 in dorsal view showing the internal anteriorly directed rod of segment 7.

FIGURES 14–19. Hirotophora oviscapes. 14, 15, H. chilensis oviscape in ventral and dorsal view respectively; 16, 17, H. dividua oviscape in ventral and dorsal view respectively; 18, 19, H. multiseriata, oviscape in ventral and dorsal view respectively.Abbreviations:cerc, cercus, S8, sternite 8, T9+10, tergite 9+10.

FIGURES20–31. Hirotophora male heads,wings and hind femora.20–23, headof H.chilensis, H.dividua, H.flavimarginata and H.multiseriata respectively; 24, 25, H.chilensis wing and hind femur; 26, 27, H.dividua wing and hind femur; 28, 29, H. flavimarginatawing and hind femur; 30, 31, H.multiseriata wing and hind femur.

FIGURES 36–41. Hirotophora phallus in left lateral view. 36, 37, H. chilensis phallus general structure and epiphallus scales respectively; 38, 39, H. dividua phallus general structure and epiphallus scales respectively; 40, 41, H. multiseriata phallus general structure and epiphallus scales respectively. Abbreviations: bs, basiphallus; cp, core plate; epi, epiphallus; rp, right plate. Scale bar = 0.05mm.