Drosophila (Dudaica) albipalpis Katoh, Toda & Gao, 2018

Katoh, Takehiro K., Zhang, Guang, Toda, Masanori J., Suwito, Awit & Gao, Jian-Jun, 2018, A revision of the subgenus Dudaica Strand of the genus Drosophila Fallen, with descriptions of six new species (Diptera, Drosophilidae), ZooKeys 781, pp. 19-50 : 19

Drosophila (Dudaica) albipalpis Katoh, Toda & Gao sp. n.

Figures 2D , 4 , 5 , 6D , 8D , 9D , 13

Type material.

Holotype ♂ (#03908): INDONESIA: Cikaniki, Gunung Halimun, West Java, 4.xi.2009, MJ Toda (MZB).

Diagnosis.

Palpus broad, flat, with a few moderate setae on outer lateral surface (Figure 9D ). Paramere apically truncated in lateral view (Figure 13K ). Aedeagus apically finely serrated along ventrolateral margin (Figure 13I ). Nucleotide status in COI sequence = C and T at sites 391 and 589, respectively (Table 3 ).

Description

(characters in common with D. puberula sp. n. not repeated). Adult ♂. Head (Figures 2D , 4 - 6D , 8D , 9D ): Arista with eight dorsal and three ventral branches. Supracervical setae 24-27 per side; postocular setae 14-17 per side. Cibarium with ca. nine medial and ca. 13 posterior sensilla per side. Prementum with five (one proximal, two lateral, and two distal) pairs of setae.

Thorax (Figure 2D ): Postpronotal lobe with two prominent and three short setae. Anterior dorsocentral setae slightly convergent; posterior dorso-central setae nearly parallel. Thoracic pleura with four indistinct stripes.

Legs (Figures 2D ): First tarsomeres of all legs slightly shorter than total length of four succeeding tarsomeres.

Male terminalia (Figure 13 ): Cercus with 29-32 setae, including ca. ten ventral, small ones. Surstylus with ca. ten prensisetae and ca. eleven ventral spines. Hypandrium not pubescent. Paramere apically rounded in ventral view, with 1-2 sensilla. Aedeagus apically not darkened.

Measurements (in mm): BL = 2.50 in holotype, ThL = 1.08, WL = 2.10, WW = n/a.

Indices. FW/HW = 0.59, ch/o = 0.09, prorb = 0.63, rcorb = 0.24, vb = n/a, orbito = 0.50, dcl = 0.67, sctl = 1.02, sterno = 0.70, dcp = 0.50, sctlp = 0.91, C = 1.71, 4c = 1.31, 4v = 1.65, 5x = 1.38, ac = 2.83, M = 0.69, C3F = 0.49.

Distribution.

Indonesia (West Java).

Etymology.

Referring to the white palpus in the new species.

Figures

Figure 2. Left lateral habitus, thorax, wing, and abdomen of Drosophila Dudaica species (part 1). A Dudaica malayana (Takada) (# 03904) B Drosophila gracilipalpis sp. n. (paratype # 03902) C Drosophila puberula sp. n. (holotype # 03365) D Drosophila albipalpis (holotype # 03908). Scale bars: 0.5 mm.

Figure 4. Head (anterior view). A Drosophila malayana (Takada) (# 03903) B Drosophila gracilipalpis sp. n. (paratype # 00492) C Drosophila puberula sp. n. (paratype # 03366) D Drosophila albipalpis sp. n. (holotype # 03908) E Drosophila qiongzhouensis sp. n. (paratype # 03313) F Drosophila orthophallata sp. n. (paratype # 03905) G Drosophila dissimilis sp. n. (holotype # 00430). Abbreviation: plp = palpus. Scale bars: 0.5 mm.

Figure 5. Postocciput (caudal view). A Drosophila malayana (Takada) (# 03903) B Drosophila gracilipalpis sp. n. (paratype # 00492) C Drosophila puberula sp. n. (paratype # 03366) D Drosophila albipalpis sp. n. (holotype # 03908) E Drosophila qiongzhouensis sp. n. (paratype # 03313) F Drosophila orthophallata sp. n. (paratype # 03905) G Drosophila dissimilis sp. n. (holotype # 00430). Abbreviations: poc s = postocellar setae, spc s = supracervical setae. Scale bars: 0.1 mm.

Figure 6. Cibarium of Drosophila Dudaica species (part 1; dorsal and lateral views). A Dudaica malayana (Takada) (# 03903) B Drosophila gracilipalpis sp. n. (paratype # 00492) C Drosophila puberula sp. n. (paratype # 03366) D Drosophila albipalpis sp. n. (holotype # 03908). Abbreviations: cly = clypeus, m s = medial sensilla, p s = posterior sensilla. Scale bars: 0.1 mm.

Figure 8. Prementum (ventral and lateral views). A Drosophila malayana (Takada) (# 03903) B Drosophila gracilipalpis sp. n. (paratype # 00492) C Drosophila puberula sp. n. (paratype # 03366) D Drosophila albipalpis sp. n. (holotype # 03908) E Drosophila qiongzhouensis sp. n. (paratype # 03313) F Drosophila orthophallata sp. n. (paratype # 03905) G Drosophila dissimilis sp. n. (holotype # 00430). Scale bars: 0.1 mm.

Figure 9. Palpus (lateral and dorsal views; only A is photographed at right side and flipped horizontally). A Drosophila malayana (Takada) (# 03903) B Drosophila gracilipalpis sp. n. (paratype # 00492) C Drosophila puberula sp. n. (paratype # 03366) D Drosophila albipalpis sp. n. (holotype # 03908) E Drosophila qiongzhouensis sp. n. (paratype # 03313) F Drosophila orthophallata sp. n. (paratype # 03905) G Drosophila dissimilis sp. n. (holotype # 00430). Scale bars: 0.1 mm.

Figure 13. Drosophila (Dudaica) albipalpis sp. n. (A-K holotype # 03908). A, B periphallic organs (caudal and caudolateral view, respectively) C surstyli (caudoventral view) D surstylus and epandrial ventral lobe (caudolateral view) E tenth sternite and ventral protrusions of cerci (ventral view) F-H phallic organs (ventral, ventrolateral, and lateral view, respectively) I apical portion of aedeagus with fine serrations (indicated with red arrowhead; ventrolateral view) J, K sensilla (indicated with red arrowheads) and apical portion of parameres (ventral and lateral view, respectively). Scale bars: 0.1 mm.