Prolachesilla casasolai, Arango, Stephania Sandoval, Obando, Ranulfo González & Aldrete, Alfonso Neri García, 2017

Arango, Stephania Sandoval, Obando, Ranulfo González & Aldrete, Alfonso Neri García, 2017, New species of Prolachesilla Mockford & Sullivan (Psocodea: ‘ Psocoptera’: Lachesillidae: Graphocaeciliini) from Bolivia and Mexico, Zootaxa 4244 (3), pp. 440-450 : 442-446

Prolachesilla casasolai n. sp.

( Figs 6–15 )

Diagnosis. The only species so far known in the genus, with two distinct triangular bodies of endophallic denticles; hypandrium broad, with posterior border slightly convex in the middle and with a row of long setae ( Fig. 10 ). Subgenital plate with a slender posterior projection in the middle ( Fig. 14 ); V1 slender, elongate, V2 +3 wide based, narrowing distally, with a distinct spinose apex ( Fig. 15 ).

Male. Color. Body tawny brown, compound eyes black, legs pale yellow, forewings pale yellow, veins pale brown ( Fig. 6 ), hindwings yellowish, almost transparent. Tergal lobes of meso- and metathorax pale brown, abdomen creamy, with pale brown, subcuticular, transverse bands. Clunial projection creamy, with brown border; epiproct creamy with border pale brown, paraprocts creamy with a circular area pale brown. Hypandrium pale brown.

Morphology. As in diagnosis plus the following: Head vertex slightly concave in the middle ( Fig. 7 ). Upper border of compound eyes not reaching the level of the vertex. Forewing L/W: 2.47 ( Fig. 6 ). Forewing pterostigma elongate, wider distally, lp/wp: 3.26, without setae in the membrane. Areola postica triangular ( Fig. 6 ). Hindwing L/W: 2.76 ( Fig. 6 ). Clunium projected over the bases of epiproct and paraprocts ( Fig. 8 ); projection over the epiproct concave, with postero-lateral corners rounded; projection over each paraproct rounded ( Fig. 8 ). Phallosome ( Fig. 9 ), with aedeagal arch narrow, projected posteriorly, the projection about as long as each arm; external parameres slender, with spiny apices curved outwards. Paraprocts ( Fig. 8 ), broad, with few setae; sensory fields with 15–16 trichobothria on basal rosettes. Epiproct ( Fig. 8 ), wider than long, posteriorly rounded, setae as illustrated.

Measurements (in microns). FW: 2650, HW: 2000, F: 650, T: 1037, t1: 375, t2: 125, ctt1: 19, Mx 4: 160, f1: 510, f2: 410, f3: 325, f4: 270, f5: 160, f6: 150, f7: 140, f8: 130, f9: 120, f10: 110, f11: 120, IO: 350, D: 190, d: 140, IO/d: 2.5, PO: 0.73.

Female. Color. Same as the male. Subgenital plate apically hyaline, pigmented area anteriorly concave.

Morphology. Head as in the male. Forewing L/W: 2.52 ( Fig. 11 ). Pterostigma, lp/wp: 3.30. Areola postica as in the male ( Fig. 11 ). Hindwing L/W: 2.83 ( Fig. 11 ). Subgenital plate broad, triangular, densely setose, with posterior border acuminate ( Fig. 14 ). Paraprocts broad, elongate, with field of short setae posteriorly, and with macrosetae anteriorly; sensory fields with 14 trichobothria issuing from basal rosettes ( Fig. 13 ). Epiproct anteriorly straight, posteriorly rounded; setae as illustrated.

Measurements (in microns). FW: 2775, HW: 2125, F: 650, T: 1037, t1: 375, t2: 125, ctt1: 20, Mx 4: 155, f1: 550, f2: 415, f3: 340, f4: 260, f5: 155, f6: 140, f7: 130, f8: 120, f9: 110, f10: 105, f11: 120, IO: 400, D: 190, d: 130, IO/d: 3.07, PO: 0.68.

Specimens studied. Holotype male. MEXICO . Oaxaca. Sierra Juárez . Santa Catarina Lachatao, “ Las Vigas ”, 17°11’17”N: 96°27’13.5”W, 2790 m), 27.VIII.2013, beating shrubs with dead, hanging leaves, J. A. Casasola González. Paratypes: 1 female, same data as the holotype.

Etymology. This species is dedicated to its collector, José Arturo Casasola González, of the University of the Sierra Juárez, Ixtlán de Juárez, Oaxaca, México, in recognition to his studies on Psocodea : ‘Psocoptera’, and for his important findings of ‘Psocoptera’ in the Sierra Juárez.

Figures

FIGURES 6 – 10. Prolachesilla casasolai n. sp. Male. 6. Fore- and hind- wings. 7. Front view of head. 8. Clunium, epiproct and right paraproct. 9. Phallosome. 10. Hypandrium. Scales in mm.

FIGURES 11 – 15. Prolachesilla casasolai n. sp. Female. 11. Fore- and hind- wings. 12. Front view of head. 13. Paraprocts and epiproct. 14. Subgenital plate. 15. Left gonapophysis. Scales in mm.