Hypodiplosis Kieffer

Kolesik, Peter & Gagné, Raymond J., 2020, A review of the gall midges (Diptera: Cecidomyiidae) of Indonesia: taxonomy, biology and adult key to genera, Zootaxa 4847 (1), pp. 1-82 : 34-35

Hypodiplosis Kieffer

[ Figs 17m –o ]

Hypodiplosis Kieffer 1913: 187 .

Type species: Clinodiplosis paederiae Kieffer & DvLR , by monotypy.

This monotypic genus was erected by Kieffer (1913) for Clinodiplosis paederiae that induces a leaf-roll gall on Paederia foetida L. from Java (Kieffer & DvLR 1910). The type series is presumably lost ( Gagné & Jaschhof 2017), but the original description includes a drawing of the male terminalia that allows us to place the genus in the tribe Clinodiplosini for the first time.

Description (adapted from Kieffer & DvLR (1910: 129) and Kieffer (1913: 187). Male. Flagellomeres binodal, the first node spherical with a single circumfilum, the second cylindrical with two circumfila, the loops regular, none reaching to base of next distal circumfilum [ Fig. 17n ]. Palpus 4-segmented. Wing with R 5 wing vein reaching C well beyond wing apex, M 4 and Cu 1 forming fork. Tarsal claws simple, empodia a bit shorter than claws. Terminalia with cerci concave apically; hypoproct longer than cerci, slender at base, widening and ovoid distally; aedeagus narrow, longer than hypoproct; gonostylus elongate, narrow and bowed [ Fig. 17o ].

Female. Flagellomeres cylindrical, circumfila closely appressed. Abdomen not protrusible, cerci elongateoval.

Pupa. Antennal bases not modified. Prothoracic spiracles long. Dorsal spines present, simple.

Remarks. This monotypic genus belongs to the supertribe Cecidomyiidi . It is placed for the first time in the tribe Clinodiplosini because of the concave caudal edge of the male cerci. The single unique character that separates Hypodiplosis from other Clinodiplosini is the tapered end of the hypoproct. All else we know of the genus conforms to Clinodiplosis in the broad sense.

Figures

FIGURES 17a–l. Eucalyptodiplosis paederiae: a–c: galls on Paederia foetida, a, the Philippines (cross section, magnified 2x when compared to b, Fig. I-1 of Uichanco (1919)); b, the Philippines (longitudinal section, Fig. I-6 of Uichanco (1919)); c, the Philippines (overall view, Fig. VIII-5 of Uichanco (1919)); d–f male: d, wing; e, 3rd flagellomere; f, terminalia (dorsal); g–l, female: g, head (ventral, arrow indicates occipital protuberance); h, terminalia (ventral); i, 3rd flagellomere; j, tarsal claw on foreleg; k, tarsal claw on midleg; l, tarsal claw on hindleg. Figs 17m–o. Hypodiplosis paederiae: m, galls on Paederia foetida: Fig. 1012 of DvLR & DvL (1926)); n, last two male flagellomeres (Fig. 8 of Kieffer & DvLR (1910)); o, terminalia (dorsal, Fig. 9 of Kieffer & DvLR (1910)).