Drosophila malagasy, Grimaldi & Jones, 2020

Grimaldi, David A. & Jones, Lance E., 2020, A Revision of the Drosophila spinipes Species Group (Diptera: Drosophilidae), Zootaxa 4809 (1), pp. 1-28 : 16

publication ID	https://doi.org/ 10.11646/zootaxa.4809.1.1
publication LSID	lsid:zoobank.org:pub:263939A4-E63E-4EE9-9AB6-0549794F9F24
persistent identifier	https://treatment.plazi.org/id/03FAC732-FFF9-066F-0DC7-11B23392D2EB
treatment provided by	Plazi
scientific name	Drosophila malagasy
status	sp. nov.

Treatment

Drosophila malagasy View in CoL , new species

Figs. 2D View FIGURE 2 , 3B View FIGURE 3 , 4 View FIGURE 4 A–C, 5B–C, 6D, 7C–D, 8B, 9D–E, 10G, 11D–E, 12B–D

LSID urn:lsid:zoobank.org:act:3627E181-1B0E-4B78-8380-03B503D35E7B

Diagnosis: Usually with just 3 black spines (vs. 4) on protarsal segment 1 (the small spine no. 7 missing); apex of abdomen light (tergites 6 to 8 in male, 7 and 8 in females); hypandrium small, anterior portion distinctly constricted; aedeagus without coarse inner scales but with finely serrate apical-lateral margins.

Description: Coloration typical for group, tergite 7 in female light, paraprocts slightly darker; males with tergite 6, epandrium and cerci light. Protarsus with standard array of fang-shaped spines alternating in size, but with protarsomere 1 with usually 3 black spines instead of the typical 4 (small spine no. 7 often missing); in 14 specimens four spines were found in four individuals (HS18, 22, 28, and 30), spines on protarsomere 1 crowded onto distal half of segment. Male genitalia: Surstylus approximately triangular in full lateral view, prensisetae not crowded (e.g., touching); ventral lobe of epandrium with 2 short, spine-like setae; subepandrial sclerite with expanded anterior portion, posterior arms an inverted V-shape. Hypandrium small, anterior portion significantly narrowed to ~ 0.5x the posterior width; aedeagus narrowed apically in dorsoventral view, with dense, fine spicules medially and 5–6 very fine serrations at apex; laterally with apex bulbous. Oviscapt: Pegs in dorsal triad and ventral pair approximately equal in size; apical notch shallow to deep, ventral series of 9–10 smaller pegs evenly spaced to slightly crowded. Measurements (N = 4–6): Head: HD/HW 0.80 (0.79–0.82); FL/LFW 1.27 (1.17–1.46); VB2/VB1 1.67 (0.61–0.84); EW/ED 0.70 (0.67–0.75); OR2/OR1 0.87 (0.82–0.92); OR3/OR1 1.13 (1.05–1.23); OC/POC 1.45 (1.30–1.50); FW/FD 0.55 (0.50–0.62); ODB/ODA 0.33 (0.27–0.40); Thorax: ThL 0.92 mm (0.80–1.14); UPS/LHS 0.75 (0.72–0.82); LHS/ThL 0.20 (0.17–0.22); ADC/PDC 0.46 (0.36–0.53); AKE/PKE 0.45 (0.38–0.50); LF1/LF2 0.79 (0.76–0.83).

Holotype: Male , HS-16 “ Madagascar, Province Fianarantsoa, Parc National Ranomafana, radio tower, at forest edge, elev. 1130 m., 20 June–6 July, 2003 / 21° 15.05’ S, 47° 24.43’ E, coll. M. Irwin, M. Harin’Hala, California Academy of Sciences, Malaise [trap] mixed tropical, MA-02-09B-64.” Point mounted, genitalia dissected by DG; in CAS. GoogleMaps

Other Specimens: Paratypes: HS-17, male “ Madagascar, Province Fianarantsoa, Parc National Ranomafana, radio tower, at forest edge, elev. 1130 m., 18–29 June , 2003 / 21° 15.05’ S, 47° 24.43’ E, coll. M. Irwin, M. Harin’Hala, California Academy of Sciences , Malaise [trap] mixed tropical, MA-02-09B-64” genitalia dissected by DG. HS-18, female “ Madagascar, Province Fianarantsoa, Parc National Ranomafana , radio tower, at forest edge, elev. 1130 m., 20 June–6 July , 2003 / 21° 15.05’ S, 47° 24.43’ E, coll. M. Irwin, M. Harin’Hala, California Academy of Sciences , Malaise [trap] mixed tropical forest, MA-02-09B-64.” 1 female, HS-23 “ Madagascar: Ambohitra , Montagne d’Ambre , 1000 m, 9.IV.1991, A. Freidberg & Fini Kaplan” not dissected. HS-26 (female), HS-20, 21 (males, both dissected by DG): “ Madagascar N., Ambohitra 800 m., Joffreville, 9–12.IV.1991, A. Freidberg & Fini Kaplan.” 5 females (HS-19, 25, 28, 29, 30 [19, 28, 30 dissected by DG]), 1 male (HS-22, dissected by DG), all: “ Madagascar N., Perinet (Andasibe), 16.17. IV.1991, A. Freidberg & Fini Kaplan.” All specimens from Ambohitra and Perinet in TAU GoogleMaps , except HS-19 and -22 (in AMNH).

Etymology: In direct reference to the country of origin, as a noun in apposition.

Comments: This may be the species to which Lachaise et al. (1996) mentioned as “ cf. spinipes ” from Madagascar and Mauritius. We have not seen specimens from Mauritius. The species as we define it here may represent two or more morphocryptic species, based on the variation in oviscapt (cf. figs. 7C, D), though with minor variation in hypandrium size and shape (cf. figs. 9D, E), and the number of fine serrations at the tip and lateral margins of the phallus.