Chalarus brevicaudis Jervis, 1992

Kehlmaier, Christian & Assmann, Thorsten, 2008, The European species of Chalarus Walker, 1834 revisited (Diptera: Pipunculidae), Zootaxa 1936, pp. 1-39 : 19

Chalarus brevicaudis Jervis, 1992

Chalarus brevicaudis Jervis, 1992: 313 .

Diagnosis: Male genitalia ( Fig. 14 ) with straight and broad phs; tdp long and rounded, Lmtdp:Ltdp~1.75; both php broadened, rather hyaline, without strong marginal rim, almost twice length of mtdp; all ejaculatory ducts placed distally on mtdp; ejaculatory apodeme nail-shaped (as in Fig. 22 ). Female with frontal facets slightly enlarged (J92 Fig. 4 B); frons slightly narrowed, at narrowest point 3–3.5 times diameter of largest frontal facet; flagellum dark brown; legs dark brown but base of femora, area around femoral-tibial joints and tarsi may be somewhat 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 73 & 75 . See Table 1 for coxI and ITS2 barcode sequence accession numbers.

Annotations: Inner male genitalia of C. brevicaudis are closest to C. longicaudis but differ in that they have a distinctly longer tip of distiphallus and differently shaped phallic processes, the latter being more translucent, i.e., hardly sclerotized, and broadened almost to their apex (compare Figs 14–15 ). The female ovipositor is unique in its dorsal and lateral aspect. Jervis (1992) mentions a female Form A near brevicaudis with only very slightly enlarged ommatidial facets at the front and a slightly expanded rather than constricted frons — not included in the identification key. The single known host species is Empoasca vitis , in which the first instar larva overwinters ( Jervis 1992).

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.