Dialineura lehri Zaitzev, 1977

Krivosheina, N. P. & Krivosheina, M. G., 2017, Biology and immature morphology of the stiletto flies Dialineura lehri Zaitzev, 1977 and Pandivirilia sapponensis (Matsumura, 1916) (Diptera, Therevidae), Far Eastern Entomologist 343 (343), pp. 9-14 : 10

Dialineura lehri Zaitzev, 1977

Figs 1–8

MATERIAL EXAMINED. Russia: Primorskii krai, Sokolchi, Lazovskii Nature Reserve,

in soil, 14.VII 1979, 1 pupa, 1 male (coll. A. V. Kompantzev) .

DESCRIPTION. Pupa. Body size 11 mm. Antennal sheaths are situated at the same horizontal line in the anterior part of cephalothorax ( Fig. 1 ). Antennal sheaths massive, with apical pointed spine and light tubercle near its base. Such light tubercle judging by the litera-

ture data on the pupae from other genera is typical for the representatives of the subfamily

Therevinae . Body end with two elongate diverging spines posited on broad round tubercles

( Fig. 8 ). Fore legs are situated almost at the level of apices of the wing sheaths, however mid and hind legs protrude beyond the wing sheath margin.

Body segments with many short pointed spines and long setae. Spines are situated on the dorsal side of pupa and setae — on the ventral side. Spines are relatively short and equal in size on dorsal part of abdominal segments II and VII ( Figs 4, 8 ). Dorsal side of abdominal segments III-VI with short spines in the middle and with 2 long spines at margins ( Fig. 5 ).

Ventral side of abdominal segment II with 3 symmetrical pairs of long setae ( Fig. 1 ), ventral side of abdominal segment III-IV with 2 median short setae and 4 long setae laterally from them ( Fig. 6 ). Lateral sides of abdominal segments with 3 long setae ( Fig. 7 ).

Spiracles are situated at the apex of elongate tubercle on lateral side of prothorax and abdominal segments I-VII ( Figs 2, 3 ). Stigmal plate of prothoracic spiracles with 8 spiracular chambers, of abdominal spiracles – maximally with 7 chambers.

NOTES. The species was described from Primorskii krai (Zaitzev, 1977). One male of this species was reared from fruiting body of fungus (Zaitzev, 1986), but immature stages were not described.

Figures

Figs. 1–8. Pupa of Dialineura lehri. 1 – cephalothorax ventrally; 2 – anterior (prothoracic)