Lachesilla waterhousi, García Aldrete, 2017

García Aldrete, Alfonso N., 2017, New species of Lachesilla (Psocodea: Psocomorpha: Lachesillidae), in species group corona, from southern Mexico and Central America, Zootaxa 4347 (2), pp. 201-227 : 222-225

publication ID	https://doi.org/ 10.11646/zootaxa.4347.2.1
publication LSID	lsid:zoobank.org:pub:320F6118-B0F3-4D9A-BA05-D1A4A591C43E
DOI	https://doi.org/10.5281/zenodo.6009038
persistent identifier	https://treatment.plazi.org/id/E73E0B31-5500-FFC4-FF15-F9E26D58FC3A
treatment provided by	Plazi
scientific name	Lachesilla waterhousi
status	sp. nov.

Treatment

Lachesilla waterhousi View in CoL n. sp.

( Figs 62–67 View FIGURES 62 – 67 )

Diagnosis. Hypandrium wide, with a setal field on each side and a deep concavity posteriorly in the middle, between the posterior processes, these proximally wide, narrowing distally, acuminate. Phallosome V-shaped anteriorly, apodemes proximally slender, wide distally, with a pointed apophysis on outer, postero-lateral corner, directed outward. Subgenital plate broad, of trapeziform profile, flap wide, short, sides parallel, antero-lateral corners projected outward. Gonapophyses short, stout, distally rounded. Ninth sternum wide, anterior half slightly pigmented, spermapore with pigmented rim, located on posterior half.

Description. Male. Color (10–49 years in 80% ethanol). Body pale brown. Compound eyes black, ocelli hyaline, without pigmented centripetal crescents. Wings hyaline, veins brown, R1 and stigmasaum ochre. Abdomen whitish, with brown subcuticular rings, faded ventrally.

Morphology. As in diagnosis, plus the following: Compound eyes slightly below the level of the vertex. Forewing pterostigma long, wider distally, Rs-M fused for a short distance, areola postica wide, rounded apically ( Fig. 62 View FIGURES 62 – 67 ). Hypandrium and phallosome ( Fig. 64 View FIGURES 62 – 67 ). Paraprocts ( Fig. 66 View FIGURES 62 – 67 ) broad, rounded, prong curved, distally truncate, sensory fields with 10 trichobothria. Epiproct ( Fig. 66 View FIGURES 62 – 67 ), slightly concave anteriorly, posteriorly bilobed, with setae on each lobe as illustrated.

Measurements. FW: 1964, HW: 1467, F: 385, T: 769, t1: 261, t2: 95, ctt1: 16, Mx4: 93, f1: 230, f2: 195, f3: 149, f4: 129, f5: 89, f6: 82, f7: 66, IO: 317, D: 158, d: 88, IO/d: 3.6, PO: 0.55.

Female. Color (44–49 years in 80% ethanol). Same as in the male.

Morphology. As in diagnosis, plus the following: Subgenital plate ( Fig. 65 View FIGURES 62 – 67 ), straight posteriorly, setae as illustrated, flap ( Fig. 65 View FIGURES 62 – 67 ). Gonapophyses and ninth sternum ( Fig. 63 View FIGURES 62 – 67 ). Paraprocts ( Fig. 67 View FIGURES 62 – 67 ), broadly elliptic, setal field as illustrated, sensory fields with 10 trichobothria. Epiproct ( Fig. 67 View FIGURES 62 – 67 ), straight anteriorly, rounded posteriorly, setae as illustrated.

Measurements. FW: 1894, HW: 1462, F: 379, T: 693, t1: 231, t2: 92, ctt1: 14, f1: 195: f2: 146, f3: 125, f4: 101, f5: 65, f6: 68, f7: 57, f8: 62, IO: 332, D: 150, d: 92, 3.6, PO: 0.61.

Specimens studied. Holotype male. GUATEMALA. 41.6 km. N El Rancho, rd. to Cobán . 29.viii.1968. Beating Pinus foliage and branches. E. L. Mockford & A. N. García Aldrete. 4 paratypes female. Same data as the holotype ( ISU) . 1 female (non-paratype), 4 km. NW Chimaltenango . 29.viii.1973. Beating shrubs with dead leaves. A. N. García Aldrete. 1 male (non-paratype). MEXICO . Chiapas. Pueblo Nuevo. Soluchistán. Rincón Chamula , 1760 m. 17º11’40”N : 92º55’27”W. Beating Pinus foliage. L. Cervantes.

Etymology. This species honors the memory of Charles O. Waterhouse, co-author of the Insecta. Coleoptera . Serricornia. Volume III, Part 1 (1882–1897), of the Biologia Centrali-Americana.

Remarks. This species is close to L. horni n. sp., and to L. jacobyi n. sp., described above. It differs from them in the stout, acuminate posterior processes of the hypandrium, and in details of the distal thirds of the phallosome apodemes.