Schizomyia galiorum Kieffer, 1889

Elsayed, Ayman Khamis, Yukawa, Junichi & Tokuda, Makoto, 2018, A taxonomic revision and molecular phylogeny of the eastern Palearctic species of the genera Schizomyia Kieffer and Asteralobia Kovalev (Diptera, Cecidomyiidae, Asphondyliini), with descriptions of five new species of Schizomyia from Japan, ZooKeys 808, pp. 123-160 : 135-138

Schizomyia galiorum Kieffer, 1889 Figs 68-73, 74-76; Table S3

Characters as in S. achyranthesae except for the following:

Material examined.

2♂, 3♀ (Mamaev collection: slide no. B1-251369): collected from Rybatskij, Lithuania on 19.vii.1969; 1♀, 1 pupal exuviae (J. J. Kieffer’s specimen in Felt collection).

Description.

Head: Compound eyes with rounded facets; facets on vertex and eye bridge unobservable because the specimens mounted laterally. Palpus: first segment ca 23.4 μm, second 1.6 times as long as the first, third 1.4 as long as the second, fourth 1.4 as long as the third.

Thorax: Wing (Fig. 70) length 1.33-1.55 mm (n = 2) in male, 1.93 mm (n = 1) in female; R5 joining C just before wing apex. Empodia as long as claws (Fig. 71). Anepimeral setae 9-15 (n = 5); mesanepisternum scales 14-18 (n = 4); lateral scutum setae 17-37 (n = 5). Lengths of leg segments as in Suppl. material 1: Table S3.

Female abdomen: Posterior margin of tergite VIII without dorsal lobes. Sternites with median pair of trichoid sensilla. Sternite VII about twice as long as VI. Ovipositor (Figs 72, 73): protrusible needle-like portion short, about 1.9 times as long as sternite VII; cerci fused, with few fine setae (Fig. 73).

Male abdomen: Sternites with median pair of trichoid sensilla. Sternite VII with two posterior rows of setae. Terminalia (Fig. 74): Gonocoxite with slightly developed apical lobe. Gonostylus with several setae on distal half dorsally, with group of setae on the basal half ventrally, and with distinctive unfused denticles. Hypoproct slightly longer than cerci.

Mature larva: Sternal spatula bilobed, the anterior free portion slightly wider than the posterior portion ( Kieffer 1889). Two groups of lateral papillae present on each side of the spatula, each group of 2 setose and 1 asetose papillae. Terminal segment with 6 setose and 2 corniform terminal papillae ( Möhn 1955).

Pupa (Figs 75, 76): Antennal horns slightly developed. Prothoracic spiracle 240 μm long (n = 1).

Distribution.

Widespread Europe, Algeria and Kazakhstan ( Gagné and Jaschhof 2017).

Remarks.

This species is distinguished from eastern Holarctic congeners by the distinctly short ovipositor, the absence of dorsal lobes on the posterior margin of female tergite VIII, and the conjunction of wing vein C with R5 before wing apex.