Prolachesilla oaxacana, 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 : 446-449

Prolachesilla oaxacana n. sp. Male

Figs 21–25

Diagnosis. Differing from P. casasolai n. sp. and P. casasolaoides n. sp., in having the phallosome with two bodies of endophallic denticles close together, in having the external parameres stout, slightly curved outwards with spines in base and apex, in having the posterior projection of the aedeagal arch about half as long as each arm ( Fig. 24 ), in having the posterior border of the hypandrium more projected in the middle ( Fig. 25 ), and in having the clunial projection over the area of the epiproct with the postero-lateral corners wide and jagged, similar to P. poblana Mockford & Sullivan, 1986 ( Fig. 23 ). All the other species of Prolachesilla , except P. casasolai n. sp., have the endophallic denticles in a single group.

Color. Body tawny brown, compound eyes black, legs pale brown, forewings pale yellow, hindwings hyaline, almost transparent ( Fig. 21 ). Tergal lobes of meso- and metathorax pale brown, abdomen creamy, with pale brown subcuticular, transverse bands. Clunial projection pale yellow; epiproct and paraprocts creamy. Hypandrium and phallosome pale brown.

Morphology. As in diagnosis plus the following: Head vertex almost straight, slightly below the level of the upper border of the large, prominent compound eyes ( Fig. 22 ). Forewing L/W: 2.85 ( Fig. 21 ). Forewing pterostigma elongate, wider distally, lp/wp: 3.05, without setae in the membrane. Areola postica triangular ( Fig. 21 ). Hindwing L/W: 2.81 ( Fig. 21 ). Hypandrium ( Fig. 25 ). Phallosome ( Fig. 24 ). Posterior border of clunium projected over the area of the epiproct and paraprocts; projection over each paraproct triangular ( Fig. 23 ). Paraprocts ( Fig. 23 ), almost circular, with three marginal short spines; sensory fields with 15–16 trichobothria on basal rosettes. Epiproct ( Fig. 23 ), wider posteriorly, setae as illustrated.

Measurements (in microns). FW: 2350, HW: 1825, F: 525, T: 925, t1: 487, t2: 100, ctt1: 22, Mx 4: 190, f1: 470, f2: 350, f3: 280, f4: 230, f5: 130, IO: 250, D: 275, d: 200, IO/d: 1.25, PO: 0.72.

Specimens studied. Holotype male. MEXICO . Oaxaca. Sierra Juárez. San Juan Juquila Vijanos, 17°21’9.5”N : 96°17’41”W, 1720 m., 23.V.2011, beating shrubs with dead, hanging leaves, J. A. Casasola. Paratypes: 1 male, same data as the holotype.

Etymology. The specific name refers to the Mexican state of Oaxaca, where this species was collected.

Figures

FIGURES 21 – 25. Prolachesilla oaxacana n. sp. Male. 21. Fore- and hind- wings. 22. Front view of head. 23. Clunium, paraprocts and epiproct. 24. Phallosome. 25. Hypandrium. Scales in mm.