Kinabalumyia Cerretti & Pape, 2020

Cerretti, Pierfilippo, Badano, Davide, Gisondi, Silvia, Giudice, Giuseppe Lo & Pape, Thomas, 2020, The world woodlouse flies (Diptera, Rhinophoridae), ZooKeys 903, pp. 1-130 : 1

Kinabalumyia Cerretti & Pape gen. nov. Fig. 18

Unambiguous character state changes

(Table 1 , Fig. 20 ). Global apomorphies: 81:1; local apomorphies: 21:1, 53:1, 59:1.

Diagnosis.

Head: head higher than long in lateral view. Facial ridge approx. 1.3 times as long as frons. Ocellar setae present though small. Frons 0.9-1.1 times as wide as compound eye in dorsal view. Median vertical setae strong and slightly converging. Two or three slightly convergent and reclinate frontal setae, descending to approx. half level of pedicel. Fronto-orbital plate nearly bare with one proclinate orbital seta (no sexual dimorphism). One upper lateroclinate orbital seta. Parafacial bare, at its narrowest point approx. twice as wide as maximum diameter of arista. Vibrissal angle strongly receding. Vibrissa well developed, arising slightly below the level of lower facial margin. Lower facial margin not sunken and slightly visible in lateral view. Facial ridge strongly concave with two or three short setulae above vibrissa. Face concave but antennae not hidden and clearly visible in lateral view. Antenna long and wide (in lateral view), much longer than height of gena. Postpedicel 4.5-6.5 times as long as pedicel. Postpedicel axe-shaped in male, more or less stick-like in female. Arista bare (or apparently so). First and second aristomere slightly thickened and strongly elongated. Lunule bare. Gena, in profile, approx. 3/5 (male), 1/2 (female) as high as compound eye. Palpus pretty short, dark brown.

Thorax: prosternum bare. Postpronotum with two setae. Two postsutural supra-alar setae (first postsutural supra-alar seta absent). Scutellum with one pair of strong lateral setae and one pair of short, crossed and horizontal apical setae. Anatergite with a tuft of short setulae below lower calypter. Subscutellum moderately swollen, mostly, though not entirely, sclerotised. Metathoracic spiracular lappets nearly undeveloped. Lower calypter distinctly tongue-shaped (ground-plan trait of Rhinophoridae ) (Fig. 2E ). Costal sector cs2 setose ventrally. Costal spine not differentiated from general costal setae. Costal sector cs5 clearly longer than costal sector cs2. Vein R1 entirely bare. Vein R4+5 bare dorsally. Bend of vein M1 absent. Crossvein dm-m forming a right angle with proximal section of M4. Vein CuA+CuP reaching wing margin. Preapical anterodorsal seta of fore tibia slightly longer than preapical dorsal seta. Fore tarsus not compressed. Tibiae of mid and hind leg normally developed. Hind tibia with three dorsal preapical setae.

Abdomen: tergites virtually without microtomentum and with relatively strong and recumbent general setulae; syntergite 1+2, tergites 3 and 4 with a pair of strong median marginal setae, without median discal setae, tergite 5 with strong marginal setae without discal setae.

Male terminalia: posterior margin of sternite 5 slightly concave, almost straight. Tergite 6 plate-like, with median marginal setae; tergite 6 and syntergosternite 7+8 fused. Connection between sternite 6 and syntergosternite 7+8 fused on right side. Cerci well developed and entirely fused medially into a syncercus. Surstylus long, narrow (almost stick-like), slightly enlarged distally and gently curved anteriorly. Surstylus not fused to epandrium. Bacilliform sclerite articulated (i.e., not fused) to laterobasal margin of surstylus. Hypandrial arms not fused medially. Connection between phallic guide and pregonite membranous. Pregonite well developed and lobe-like. Postgonite without anterior seta. Epiphallus well developed apically, pointed and attached dorsomedially to basiphallus. Extension of dorsal sclerite of distiphallus divided medially into two hemisclerites which are proximally fused to dorsal sclerite of distiphallus. Median process of ventral sclerotisation of distiphallus present, divided longitudinally and interrupted proximally, i.e., not connected to ventral plate. Acrophallus simple and scale-like spinules not differentiated.

Distribution.

Oriental - Indonesia (Bali), Malaysia (Sabah), Philippines (Palawan).

Type species.

Kinabalumyia pinax Cerretti & Pape, sp. nov., by present designation.

Etymology.

The generic name is a composite word formed from the name of the type locality of the type species, Mount Kinabalu, and from the Greek word μύγα (miga), meaning fly. The name should be treated as a feminine noun.

Figures

Figure 2. Morphological terminology of Rhinophoridae, head, thorax and abdomen. A Chaetotaxy of head, thorax and abdomen in dorsal view B, C arrangement of setae of postpronotum: B three setae arranged in shallow triangle C three setae standing in a nearly right-angled triangle D thorax, sclerites and chaetotaxy, in lateral view E wing veins and cells. Drawings by Giulia Bellanti.

Figure 18. Kinabalumyia gen. nov. A-C, F-I Kinabalumyia pinax sp. nov. (Malaysia, Sabah) D-E Kinabalumyia sp. ♀ (Philippines) A K. pinax sp. nov., habitus in lateral view B K. pinax sp. nov., abdomen in dorsal view C K. pinax sp. nov., head in lateral view D Kinabalumyia sp. ♀, head in frontal view, ♀ E Kinabalumyia sp. ♀, head in lateral view F K. pinax sp. nov., wing G-I K. pinax sp. nov.: epandrial complex in posterior (G) and lateral (H) view I hypandrial complex in lateral view [A-C holotype; F-I paratypes].

Figure 20. Phylogeny of Rhinophoridae based on morphological evidence. Single tree obtained under IW (total fit: 62.33), enforcing a k-value of 4, with unambiguous character state changes mapped above branches [black squares: global apomorphies (i. e., uncontradicted and unreversed apomorphic character states; white squares: local apomorphies (i. e., homoplasious character state due to convergence or reversal)] and new taxa highlighted in bold.