Chalarus indistinctus Jervis, 1992

Kehlmaier, Christian & Assmann, Thorsten, 2008, The European species of Chalarus Walker, 1834 revisited (Diptera: Pipunculidae), Zootaxa 1936, pp. 1-39 : 24

Chalarus indistinctus Jervis, 1992

Chalarus indistinctus Jervis, 1992: 325 .

Diagnosis: Male genitalia ( Fig. 13 ) with phs gently curved; tdp long and rounded at apex, Lmtdp:Ltdp~1.75; only 1 php present; this is almost twice length of mtdp, has a strong marginal rim and is broadened towards its double pointed apex; all ejaculatory ducts placed distally on mtdp; ejaculatory apodeme linear (as in Fig. 23 ). Female with frontal facets slightly to moderately enlarged (J92 Fig. 4 C); frons at narrowest point 2.5–3 times diameter of largest frontal facet; flagellum dark brown; legs dark brown but base of femora may be paler; pulvilli of all legs of same size, shorter than distitarsus; hairs on femora, thorax and abdomen dark brown; hind femur with apical hairs of pdsr extending as far as apex; abdominal tergites dark brown; ovipositor as in Figs 71 & 74 . See Table 1 for coxI and ITS2 barcode sequence accession numbers.

Annotations: Males can be readily identified via their single asymmetric phallic process. The female ovipositor is closest to C. brevicaudis but differs, especially in its dorsal aspect, at the transition from base to piercer (compare Figs 74–75 ). A female paratype was studied ( Finland: Le, Kilpisjärvi, 6–13.VII.1959, Palmgren & Lindberg (MZH)). Jervis (1992) distinguishes two additional male forms of C. indistinctus differing in their pupal stage (Form A) and a minor genital feature (Form B) — these forms are not included in the identification key. Jervis (1992) reared the taxon from Edwarsiana bergmani , E. geometrica , E. hippocastani , E. rosae , Empoasca vitis , Erythria cruenta , Fagocyba cruenta , Fagocyba sp., Ribautiana tenerrima , R. ulmi & Typhlocyba quercus .

Figures

FIGURES 12 – 23. Figs 12 – 15. Inner male genitalia (phallus). 12. C. marki spec. nov.; 13. C. indistinctus; 14. C. brevicuadis; 15. C. longicaudis. Figs 16 – 23. Ejaculatory apodeme of male. 16. C. juliae; 17. C. latifrons; 18. C. absconditus spec. nov.; – 19. C. griseus; – 20. C. saxonicus spec. nov.; 21. C. spurius; 22. C. immanis spec. nov.; 23. C. marki spec. nov. Scale bars = 0.1 mm.

FIGURES 1 – 6. Inner male genitalia (phallus). 1. C. fimbriatus agg.; 2. C. absconditus spec. nov.; 3. C. clarus; 4. C. immanis spec. nov.; 5. C. juliae; Abbreviations: lower ej. d., lower ejaculatory ductuli; mtdp, membranous tip of distiphallus; php, phallic processes; phs, phallic shaft; tdp, tip of distiphallus; upper ej. d., upper ejaculatory duct; 6. C. latifrons. Scale bars = 0.1 mm.

FIGURES 63 – 75. Female ovipositor. 63 – 64. C. spurius lateral view; 65 – 66. C. argenteus lateral view; 67. C. spurius dorsal view; 68. C. marki spec. nov. dorsal view; 69. C. marki spec. nov. lateral view; 70. C. decorus lateral view; 71. C. indistinctus lateral view; 72. C. longicaudis lateral view; 73. C. brevicaudis lateral view; 74. C. indistinctus dorsal view; 75. C. brevicaudis dorsal view. Scale bars = 0.1 mm.