30 
PAN-PACIFIC ENTOMOLOGIST 
Male .—Length 8 mm. General color ochraceous. Antennal scape slender, 
equal in length to next 5 segments. Sterna 3, 4 with mesh-like reticulation; 
sternum 6 mesal lobe clavate, length approximately three-quarters width of 
segment, luteous (Fig. 2A). Terga 2-9 cephalic and lateral margins dark 
brown, mesal excisions shallow; tergum 8 heavily pigmented. Genitalia Fig. 
2. Sternum 9 gradually widened to the brown pigmented lateral apodeme; 
cephalic margin tergum 9 oblique, dorsal margin declivent. Cerci small, 
ovate. Tergum 10 projecting ventrad; distinct inverted brownish Y-shaped 
line on dorsum; distal margin oblique. Clasper dorsal margin serrate, acute 
apex curved ventrad; mesobasal lobe extends caudad slightly beyond mar¬ 
gin; from ventral aspect (Fig. 2B), mesobasal lobe narrow, apex arcuate and 
bearing dark brown spicules, mesal margin brownish. Phallobase enlarged, 
median portion narrow and cylindrical, apex large, curved ventrad. 
Holotype. —Male, Mexico; 4 km W of Nochistlan, Zacatecuas, 22-23 Sep¬ 
tember 1975, 1930 m, Rio de Nochistlan, at dam named Presade, “Los 
Tuzas,” Baldomera Villegas. 
Type deposited in Entomology Department, University of California, Da¬ 
vis, California. 
This species named in honor of Mr. Baldomera Villegas, University of 
California at Davis who collected this interesting specimen. 
Helicopsyche temora, new species 
This species belongs to the selanderi Ross, tapadas Denning complex. 
Diagnostic characters: clasper with lateral and dorsal margin broadly round¬ 
ed, apex obtuse; oblique apex of mesobasal lobe of clasper; apex of ventrad 
curved phallus greatly enlarged. 
Male .—Length 5.5 mm. General color luteous. Sterna 3, 4 with mesh-like 
reticulation. Terga 2-6 subquadrate, cephalic margins dark brown, wide 
shallow excisions. Antennal scape enlarged, curved dorsocaudad, length 
equal to next 4 segments. Mesal lobe sternum 6 yellowish, elongate, about 
two thirds width of segment from ventral aspect (Fig. 3A), acuminate from 
lateral aspect (Fig. 3B). Genitalia Fig. 3. Sternum 9 narrow, cephalic margin 
somewhat convex, tergal margin indicated by brown lateral apodeme; ter¬ 
gum 9 narrowed dorsad, projected caudad. Cerci inconspicuous, ovate. Ter¬ 
gum 10 convex, lateral margins parallel, single row erect setae along lateral 
margins (Fig. 3C); from lateral view, tergum gradually narrowed to rounded 
apex (Fig. 3). Clasper mesal margin with short angulation, dorsal margin 
broadly arcuate, apex obtuse (subacute in one paratype). Mesobasal lobe 
about equal width throughout, apex oblique, spiculated; mesal and apical 
margins brown, ventral aspect (Fig. 3D). Phallus curved ventrad, apex en¬ 
larged, distal portion semimembranous (Fig. 3). 
Holotype. —Male. Mexico: 6.4 km (4 mi) SW of Temoris, Chihuahua 1500 
