From: Morphological identification keys for adults of sand flies (Diptera: Psychodidae) in Sri Lanka
Wings broader, asymmetrical along the length (Fig. 1f). Cibarium unarmed or with scattered spicules without a pigment patch (Fig. 1d) | Genus Phlebotomus Loew, 1845 | |
Wings narrow, lanceolate, symmetrical along the length (Fig. 1e). Cibarium with one or more rows of teeth, pigment patch usually present (Fig. 1c) | Genus Sergentomyia (Franca & Parrot, 1920) | |
Genus Phlebotomus | ||
1a | Head of spermatheca with a distinct neck; spermatheca spindle-shaped (Fig. 2a) | P. (Anaphlebotomus) stantoni (Newstead, 1914) |
1b | Head of spermatheca without a distinct neck (Figs. 2b, 4a); spermatheca not spindle shaped | 2a |
2a | Spermatheca with 7–8 segments; apical segment not enlarged (Fig. 4a) | P. (Phlebotomus) salehi Mesghali, 1965 |
2b | Spermatheca with 15–17 segments; apical segment enlarged (Fig. 2b) | 3a |
3a | Thorax dorsum brown, sides dark | P. (Euphlebotomus) marginatus Annandale, 1910 |
3b | Thorax dorsum black, sides pale | 4a [P. (Euphlebotomus) argentipes Annandale & Brunetti, in Annandale 1908 (sensu lato)] |
4a | Wing overlap (R1 overlap with R2/ complete length of R2) < 0.2; wing index (R2/R2+3) < 0.2; ascoid:antennal flagellomere ratio > 0.5 | P. (Euphlebotomus) glaucus Mitra & Roy, 1953 |
4b | Wing overlap ≥ 0.2; wing index > 0.2; ascoid:antennal flagellomere ratio < 0.5 | 5a |
5a | Wing overlap = 0.2; wing index = 2.0; ascoid:antennal flagellomere ratio > 0.4 | P. (Euphlebotomus) argentipes Annandale & Brunetti, 1908 (sensu stricto) |
5b | Wing overlap > 0.2; wing index < 2.0; ascoid:antennal flagellomere ratio < 0.4 | P. (Euphlebotomus) annandalei Sinton, 1923 |
Genus Sergentomyia | ||
1a | Spermatheca with capsule (Fig. 4b, c), not tubular | 2a |
1b | Spermatheca without capsule, tubular (Fig. 4d) | 10a |
2a | Capsule of spermatheca with numerous spicules or striations (Fig. 4b, c) | 3a [subgenus Grassomyia] |
2b | Capsule of spermatheca smooth | 4a [subgenus Parrotomyia] |
3a | Tip of spermatheca with minute projections (Fig. 4b) | S. (Grassomyia) indica (Theodor, 1931) |
3b | Tip of spermatheca with small projections (Fig. 4c) | S. (Grassomyia) dreyfussi Parrot, 1933 |
4a | Pharynx with distinct pointed teeth (Fig. 3a) | 5a |
4b | Pharynx with fine spicules or none (Fig. 5a) | 7a |
5a | Cibarium with a deep notch in hind end of ventral plate (Fig. 3b) | S. (Parrotomyia) babu insularis (Theodor, 1938) |
5b | Cibarium without a notch in hind end of ventral plate (Fig. 5b) | 6a |
6a | Pharynx broad with numerous finely pointed teeth; cibarium with 40–70 teeth; tip of pigment patch bifid, ragged or fernestrated (Fig. 5b) | S. (Parrotomyia) barraudi (Sinton, 1929) |
6b | Without this combination | S. (Parrotomyia) rudnicki Lewis, 1978 |
7a | Cibarium with a deep notch (Fig. 5c) | S. (Parrotomyia) baghdadis (Adler & Theodor, 1929) |
7b | Cibarium without a deep notch | 8a |
8a | Pharynx with well-defined scales (Fig. 5d) | S. (Parrotomyia) grekovi (Khodukin, 1929) |
8b | Pharynx without scales | 9a |
9a | Cibarium with pigment patch and 17 hind teeth; pharynx with long teeth (Fig. 5e) | S. (Parrotomyia) modii (Lewis, 1978) |
9b | Cibarial pigment patch is small or absent (Fig. 5f); pharynx with spiculate ridges | S. (Parrotomyia) bailyi (Sinton, 1931) |
10a | Spermatheca smooth (Fig. 4e) | 11a [subgenus Sergentomyia] |
10b | Spermatheca with striations (Fig. 4d) | 13a [subgenus Neophlebotomus] |
11a | Pharynx broad at posterior end with a deep constriction at base (Fig. 5g) | S. (Sergentomyia) punjabensis (Sinton, 1927) |
11b | Pharynx barrel-shaped at posterior end and lacking a deep constriction at the base (Fig. 5h, i) | 12a |
12a | Posterior margin of pharyngeal armature convex (Fig. 5h) | S. (Sergentomyia) dentata (Sinton, 1933) |
12b | Posterior margin of pharyngeal armature straight (Fig. 5i) | S. (Sergentomyia) pondicherriensis Srinivasan & Jambulingam, 2010 |
13a | Cibarium with about 8 rows of fore teeth (Fig. 3c); labrum 0.13–0.15 times the length of wing | S. (Neophlebotomus) arboris (Sinton, 1931) |
13b | Cibarium with one or more rows of teeth; labrum > 0.11 times the length of wing | 14a |
14a | Cibarium without row of teeth; labrum 0.11 times the length of wing | S. (Neophlebotomus) jamesi Lewis, 1978 |
14b | Cibarium with 3 rows of fore teeth (Fig. 3d) | 15a |
15a | Labrum 0.18–0.20 times length of wing; R2/R2+3 < 2.06 | S. (Neophlebotomus) malayae (Lewis, 1957) |
 | Labrum 0.13–0.15 times length of wing; R2/R2+3 > 2.06 | S. (Neophlebotomus) zeylanica (Annandale, 1910) |