Lamproclasiopa hendeli (Wirth)

Costa, Daniel N. R., Mathis, Wayne N. & Marinoni, Luciane, 2016, A revision of the shore-fly genus Lamproclasiopa Hendel (Diptera, Ephydridae), ZooKeys 631, pp. 1-99 : 20-21

Taxon classification Animalia Diptera Ephydridae

Lamproclasiopa hendeli (Wirth) Figs 15-17, 36

Discocerina (Lamproclasiopa) facialis Hendel 1933: 79.

Discocerina (Lamproclasiopa) hendeli Wirth 1968: 7 [replacement name for Discocerina facialis Hendel 1933, not Williston 1896]. Mathis and Zatwarnicki 1995: 168 [world catalog].

Lamproclasiopa hendeli . Zatwarnicki and Mathis 2001: 39 [generic combination].

Diagnosis.

This species is distinguished from congeners by the following combination of characters: Moderately small shore flies, body length 2.50 mm. Head: Frons broader than long, 1.5 times as wide as an eye; glossy black with anterior margin reddish yellow, between ocelli and fronto-orbits somewhat dull by very fine reddish brown microtomentose. Pedicel black, slightly whitish dusted dorsally; basal flagellomere red yellow, darkened along outer margin; arista with 5 long rays dorsally. Face protruded in lateral view; dorsal half of face with distinct antennal grooves, these separated by a vertical ridge, just ventrad of ventral margin of antennal grooves a transverse ridge. Ventral portion of face flat, receded towards oral margin; face silvery white, microtomentose with 2 vertical stripes toward middle. Gena moderately high, ¼ height of eye; silvery white at edge of eye; with 1 strong seta. Thorax: Shiny black, smooth; central portion and scutellar disc covered with very short and fine reddish brown microtomentum that reduces the shine; within this microtomentum on mesonotum, shiny black dots at bases of short setae. No prescutellar pair of setae or supra-alar seta. Legs shiny black; tarsi reddish yellow. Wing grayish hyaline, with yellow veins; costal section II about 1.5 times as long as costal section I; veins R4+5 and M1 parallel, last section of M1 twice as long as penultimate section. Halters with black stem and light yellow knob. Calypteres with dark brown margins and hairy. Abdomen: Concolorous with mesonotum, with dense, short, black setulae; tergites 3-5 almost equally long. Male terminalia (Figs 15-17): Epandrium in posterior view (Fig. 15) roundly U-shaped, except for ventral gap, oval, only slightly narrower dorsally and ventrally, widest at midheight, dorsal arch relatively narrow, each lateral arm widest ventrally, ventral margin evenly rounded, lacking medial or ventral extensions, ventral portion bearing numerous, loosely clustered, long setulae; cercus hemispherical, tapered ventrally to pointed apex, more setulose dorsally, medial margin straight; gonite in lateral view rod-like, shallowly curved, banana-like, very slightly wider toward hypandrium than toward aedeagal base, in ventral view shallowly curved, distinctly expanded on portion toward hypandrium with extension toward aedeagal base tapered to a narrow apex, lateral margin with a wide, short irregularly shaped keel; aedeagus in lateral view (Fig. 17) very elongate, narrowly triangular, almost parallel sided, tapered evenly to moderately narrow, rounded apex, in ventral view as an elongate, very narrow, parallel-sided, rod-like structure, basal end shallowly and bluntly rounded, apical 1/5 tapered toward narrow point; phallapodeme in lateral view (Fig. 17) more or less irregularly triangular, with moderately long, narrow extensions toward aedeagal base and hypandrium, keel distinct, relatively narrow, irregular, somewhat pointed apically; hypandrium in lateral view (Fig. 17) generally narrow, rod-like, very shallowly sinuous, in ventral view almost rectangular, wider than long, anterior margin shallowly emarginate, posterior margin more deeply emarginate, moderately deeply and broadly U-shaped, depth of emargination about half length of anterior portion.

Type material.

The holotype male of Discocerina (Lamproclasiopa) facialis Hendel was published as "1 ♂, Cuesta von Cillutiucara, Bolivien, 3200 m (Fassl)." The holotype male is housed in the NMW.

Type locality.

Bolivia. La Paz: Sillutincara (= Cilluntincara) (16°17'S, 67°54'W; 3200 m).

Distribution

(Fig. 36). Neotropical: Bolivia (La Paz).

Remarks.

Although similar and apparently closely related to Lamproclasiopa argentipicta , this species is distinguished from this congener by the shiny black frons and blackish brown coxae.

Cresson (1946: 148) suggested that this species could be Discocerina nitida Cresson. We confirm that this is an included species in Lamproclasiopa , and further, that it is not related to Discocerina nitida . The illustrations of this species in Zatwarnicki and Mathis (2001) are of the holotype and are further evidence that it is a congener within Lamproclasiopa .

Our description of external features was extracted and interpreted from M. Kotrba’s English translation of Hendel’s original description, as we did not have access to the holotype. Although we have repeatedly inquired about and asked to examine the holotype male of this species, our requests were ignored. Fortunately, however, we have the illustrations of structures of the male terminalia that Zatwarnicki ( Zatwarnicki and Mathis 2001) produced of the holotype male, and these are the basis for much of our diagnosis of this species.