Amiota beama, Wang & Cao & Chen, 2020

Wang, Ya-Lian, Cao, Hui-Luo & Chen, Hong-Wei, 2020, Molecular phylogeny and species delimitation of Amiota alboguttata and Amiota basdeni species groups (Diptera: Drosophilidae) from East Asia, Zoological Journal of the Linnean Society 189, pp. 1370-1397 : 1378-1379

AMIOTA BEAMA SP. NOV.

( FIG. 3)

urn:lsid:zoobank.org:act:22A6D263-B806-4990-A365-4E9C69F23F98

Holotype: SCAU, DIP 112289 , ♂ (23 July 2006).

Type locality: China: Jizushan, Binchuan , Yunnan, 25°57′38″N, 100°23′01″E, elevation 1900 m, H.L. Cao .

Etymology: The name means ‘lotus peak’ in the Tibetan language, referring to the name of the type locality.

Diagnosis: This species resembles A. flavipes in the shapes of the paramere and aedeagus, but can be distinguished from it by the vertical lobe of the gonopod being nearly M-shaped, strongly sclerotized ( Fig. 3C). In A. flavipes , the vertical lobe of the gonopod is nearly rounded, slightly sclerotized (as shown by Xu et al., 2007: fig. 3).

Measurements and indices: Body length (BL) = 3.90 mm, thorax length (ThL) = 1.80 mm, wing length (WL) = 3.10 mm, wing width (WW) = 1.50 mm, dorsal/ventral branches of arista (arb) = 4/3, longest ventral/dorsal branch of arista in length (avd) = 0.43, longest dorsal branch of arista/width of first flagellomere (adf) = 1.17, length/width of first flagellomere (flw) = 1.33, frontal width/head width (FW/ HW) = 0.48, width of gena/diameter of eye (ch/o) = 0.08, proclinate/posterior reclinate orbital in length (prorb) = 1.00, anterior reclinate/posterior reclinate orbital in length (rcorb) = 0.64, subvibrissal/vibrissa in length (vb) = 0.33, anterior/posterior dorsocentral in length (dcl) = 0.57, prescutellar/posterior dorsocentral in length (presctl) = 0.67, basal/apical scutellar in length (sctl) = 1.15, anterior/posterior katepisternal in length (sterno) = 0.81, distance between proclinate and posterior reclinate orbitals/distance between inner vertical and posterior reclinate orbital (orbito) = 1.40, distance between ipsilateral dorsocentrals/cross distance between anterior dorsocentrals (dcp) = 0.35, distance between ipsilateral scutellars/cross distance between apical scutellars (sctlp) = 1.29, second costal section between subcostal break and R 2 + 3 /third costal section between R 2 + 3 and R 4 + 5 (C) = 1.93, third costal section between R 2 + 3 and R 4 + 5 /M 1 between r-m and dm-cu (4c) = 1.87, M 1 between dm-cu and wing margin/ M 1 between r-m and dm-cu (4v) = 3.33, CuA 1 between dm-cu and wing margin/dm-cu between M 1 and CuA 1 (5x) = 1.20, third costal section between R 2 + 3 and R 4 + 5 / distance between distal ends of R 4 + 5 and M 1 (ac) = 4.67, CuA 1 between dm-cu and wing margin/M 1 between r-m and dm-cu (M) = 0.80 and [length of heavy setation in third costal section/(length of heavy setation in third costal section + length of light setation in third costal section)] (C3F) = 0.70.

Description

Male terminalia ( Fig. 3A–D): Epandrium entirely separated mid-dorsally, with approximately ten setae near posterior margin per side. Surstylus pubescent medially, with five long prensisetae on distal margin, several thin setae on ventral margin and outer surface. The tenth sternite is laterally fused to surstyli. Anterior portion of hypandrium entirely thin. Paramere lobe shaped, pointed apically, with two processes laterally and approximately six sensilla medially. Aedeagus separated into a pair of simple rods, each fused to the base of the parameres. Aedeagal apodeme strongly curved.