Lamproclasiopa nadineae (Cresson)

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 : 68-73

Taxon classification Animalia Diptera Ephydridae

Lamproclasiopa nadineae (Cresson) Figs 105-106, 107-110, 111

Ditrichophora nadineae Cresson 1925b: 166.

Discocerina (Basila) nadineae . Cresson 1942: 116 [generic combination]. Wirth 1965: 738 [Nearctic catalog]. Mathis and Zatwarnicki 1995: 165 [world catalog].

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

Diagnosis.

This species is distinguished from congeners by the following combination of characters: Small to moderately small shore-flies, body length 1.65-2.50 mm. Head: Frons generally microtomentose but unevenly, microtomentum on ocellar triangle and especially along anterior margin just dorsad of antennal bases gray and denser, otherwise sparse and grayish brown to brown, areas toward anterior margin of frons yellowish orange to red; ocellar triangle extended to anterior margin. Antenna dark brown dorsally, extensively yellow to yellowish orange ventrobasally. Face generally microtomentose, becoming bare laterally, most prominent anteriorly in lateral view at ventral margin of antennal grooves; parafacial bare of ventroclinate setulae. Gena moderately high, gena-to-eye ratio 0.13-0.17. Thorax: Mesonotum black with uniform, fine, thin investment of gray to brown microtomentum, lacking pattern of spots; presutural supra-alar seta lacking or indistinguishable from surrounding setae. Katepisternum, especially anterior half, and anteroventral portion of anepisternum shiny black. Wing hyaline, lacking any maculation pattern or stump veins; costal vein ratio 0.50-0.52; M vein ratio 0.55-0.61. Forefemur with 4-5 stout, peg-like setae on apical third along posteroventral margin; legs generally black except for yellowish apices, yellowish apices of tibiae more extensive; tarsi yellow. Abdomen: Tergites subshiny to shiny black, generally lacking microtomentum or very sparse. Male terminalia (Figs 107-110): Epandrium in posterior view (Fig. 107) roundly U-shaped, except for ventral opening, oval, narrower dorsally, broadly rounded, widest at midheight, each lateral arm distinctly wider, ventromedial margin nearly straight, bearing cluster of setae ventrally; cercus hemispherical, gradually tapered ventrally to broadly rounded apex, evenly setulose over length; gonite in lateral view (Fig. 108) robustly rod-like, slightly curved, narrower toward hypandrium, in ventral view clavate, wider toward hypandrium, much narrower, digitiform on extension toward aedeagal base; aedeagus in lateral view (Fig. 110) more or less rectangular, widest apically and anteroventral corner more narrowly produced than posterodorsal corner, base rounded with slight, dorsal extension, in ventral view (Fig. 109) as a relatively short, moderately narrow structure, base rounded and with an medioapical papilla, apex moderately broadly rounded; phallapodeme in lateral view (Fig. 110) as a spike-heeled shoe with an elongate, narrow, extension toward aedeagal base, keel moderately long, narrow, irregularly rounded, in ventral view (Fig. 109) with thumb-like narrow process toward aedeagal base, thereafter toward hypandrium with right angle laterally, hypandrial 2/3 widest sub-basally thereafter concave to truncate apex; hypandrium in lateral view (Fig. 110) conspicuously sinuous, narrow, elongate, in ventral view robustly X-shaped with truncate anterior margin, lateral margins concave, posterior margin deeply V-shaped.

Type material.

The holotype male of Ditrichophora nadineae Cresson is labeled "Berkeley Hills Alameda Co. IV.20.'08. Cal./♂/TYPE Ditrichophora NADINEAE E. T. Cresson. Jr. [maroon red; " Ditrichophora NAEINEAE" handwritten." The holotype is double mounted (minuten pin in a thin, rectangular piece of card), is in excellent condition, and is deposited in the ANSP (6348). Four paratypes (1♂, 3♀; ANSP) bear the same locality label as the holotype.

Type locality.

United States. California. Alameda: Berkeley Hills (37° 53.5N, 122°16.1'W).

Other specimens examined.

UNITED STATES. Arizona. Cochise: Portal, Southwestern Research Station (31°53'N, 109°12.4'W), 5-9 Jun 1972, W. W. Wirth (1♂; USNM). California. Alameda: Berkeley (37°52.3'N, 122°16.4'W), 23 Mar 1919, B. Brookman, T. Aitken (1♀; USNM). Berkeley Hills (37°53.5'N, 122°16.1'W), 8 Mar-11 May 1908 (2♂, 3♀; ANSP). Humboldt: Willow Creek (40°56.4'N, 123°37.9'W), 26 Jul 1951, A. H. Sturtevant (1♂; USNM). Kern: Kern Canyon (35°41.8'N, 118°40.1'W), 1 Apr 1950, A. H. Sturtevant (2♂, 1♀; USNM). Los Angeles: Arcadia, Arboretum (34°8.6'N, 118°3.2'W), 14 Set 1949, A. H. Sturtevant (2♂, 5♀; USNM); Pasadena (34°9.4'N, 118°7.9'W), 15, 17 Feb 1950, A. H. Sturtevant (3♂, 3♀; USNM); Rio Hondo (33°55.9'N, 118°10.5'W), 15 Feb 1950, A. H. Sturtevant (2♂, 2♀; USNM). Marin: Lagunitas Creek (38°4.8'N, 122°49.6'W), 19 Oct 1947, W. W. Wirth (1♂; USNM); Muir Woods (37°53.6'N, 122°34.4'W), 7 Aug 1915, A. L. Melander (1♀; ANSP, USNM). Riverside: Riverside (33°57.2'N, 117°23.8'W), 3 Feb-5 May 1935, A. L. Melander (2♂, 1♀; ANSP, 5♂, 3♀; USNM). San Mateo: Corte Madera Creek (37°24.1'N, 122°14.3'W), 28 Oct 1953, P. H. Arnaud (1♂, 1♀; USNM); Stanford University, Jasper Ridge Biological Preserve (37°24'N, 122°14.5'W; 110 m), 14-17 Feb 2006, 2007, P. H. Arnaud, Jr. & M. M. Arnaud (29♂, 20♀; USNM); Searsville Lake (37°24.3'N, 122°14.3'W), 5 May 1953, P. H. Arnaud (1♂, 3♀; USNM). Santa Clara: Stevens Creek County Park (37°17.1'N, 122°4.6'W), 13 Mar 1976, L. Bezark (1♂; USNM). Siskiyou: Gasquet (41°50.7'N, 123°58.2'W), 18 Sep 1934, A. L. Melander (1♀; ANSP). Oregon. Benton: Cary’s Grove (44°22.6'N, 123°36.1'W), 2 Sep 1974, W. N. Mathis (2♂, 3♀; USNM); Corvallis (44°33.9'N, 123°15.7'W), 1 Aug 1935, K. Gray, (1♂; USNM); Philomath (1.6 km SW; 44°31.8'N, 123°22.9'W), 29 May 1972, W. N. Mathis (1♀; USNM); Rock Creek (6.4 km SW Philomath; 44°30.1'N, 123°26.2'W), 29 May 1972, W. N. Mathis (2♀; USNM). Douglas: Elkton (43°38.25'N, 123°34.1'W), 28 Jul 1951, A. H. Sturtevant (1♀; USNM). Lane: Burp Hollow at Long Tom River (44°09.5'N, 123°25.4'W), 30 Jun 1988, R. Danielsson (3♂; MZLU). Lincoln: Waldport (10.4 km E; 44°25.6'N, 123°56.25'W), 27 May 1972, W. N. Mathis (4♂, 5♀; USNM). Polk: Helmick State Park (44°46.9'N, 123°14.2'W), 20 March 1972, W. N. Mathis (1♂; USNM). Washington: Hillsboro (45°31.3'N, 122°59.3'W), 9 Apr 1936, K. Gray, J. Shuh (1♀; USNM). Yamhill: Carlton (45°17.6'N, 123°10.65'W), 31 Jul 1951, A. H. Sturtevant (1♂, 2♀; USNM).

Washington. Pierce: Dupont (5 km WSW; 47°03.8'N, 122°41.7'W), 13 Apr 1971, W. N. Mathis (3♀; USNM); Gig Harbor (47°19.8'N, 122°34.8'W), 17 May-9 Jun 1971, W. N. Mathis (18♂, 3♀; USNM).

MEXICO. Puebla: Puebla (9.6 km SW; 18°58.4'N, 98°16.9'W), 2 Jul 1953, University of Kansas Mexican Expedition (1♂; USNM).

Distribution

(Fig. 111). Nearctic: United States (California, New Mexico, Oregon, Washington). Neotropical: Mexico (Puebla).

Remarks.

Although similar and apparently closely related to Lamproclasiopa aliceae , this species is distinguished from that species and other congeners by the absence of a presutural supra-alar seta; the shiny black katepisternum, especially the anterior half; the shiny black anteroventral portion of the anepisternum; and the presence of four to five stout, peg-like setae on the apical third of the forefemur along the posteroventral margin. The shape of structures of the male terminalia also distinguish this species from Lamproclasiopa aliceae . So far as we know, however, the distribution of this species and of Lamproclasiopa aliceae do not overlap, with this species only known from the west coast of North America and Puebla in Mexico. The non-overlapping distributions of these two species may be a function of sample error, however.