Lachesilla cameroni, 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 : 205

Lachesilla cameroni n. sp.

( Figs 8–13 )

Diagnosis. Hypandrium processes proximally wide, narrowing distally, broadly triangular. Phallosome apodemes fused proximally, arms slender, distally dilated, acuminate, bearing a field of microspines on distal fifth. Flap of subgenital plate long, distally rounded, with sides almost parallel, slightly constricted proximally, with anterolateral corners projected outward. Gonapophyses proximally wide, narrowing distally to round apices, a sclerotized band along inner and outer borders, slightly projected outward proximally as illustrated ( Fig. 9 ). Ninth sternum mostly unpigmented, with a pigmented band longitudinally on each side of spermapore.

Description. Male. Color (37 years in 80% ethanol). Body pale brown, compound eyes black, ocelli hyaline, with ochre centripetal crescents. Terga of meso- and metathorax ochre. Abdomen pale brown, tergites 4–6 ochre. Wings hyaline, veins pale brown.

Morphology. As in diagnosis, plus the following: Macropterous. Forewing pterostigma elongate, wider distally. Rs-M fused for a distance, areola postica wide, apically rounded, slightly slanted posteriorly ( Fig. 8 ). Hypandrium and phallosome ( Fig. 11 ). Paraprocts ( Fig. 13 ) broad, with setae as illustrated, strongly pigmented anteriorly next sensory fields, these sensory fields with 9–10 trichobothria. Epiproct ( Fig. 13 ) wide, concave anteriorly, slightly bilobed posteriorly, setae as illustrated.

Measurements. FW: 1841, HW: 1358, F: 407, T: 718, t1: 248, t2: 95, ctt1: 12, Mx4: 90, f1: 257, f2: 238, f3: 177, f4: 152, f5: 97, f6: 89, f7: 81, IO: 329, D: 155, d: 117, IO/d: 2.81, PO: 0.75.

Female. Color (37 years in 80% ethanol). As in the male.

Morphology. As in diagnosis, plus the following: Usually brachypterous. Subgenital plate ( Fig. 10 ) wide, setose, posterior border rounded. Gonapophyses and ninth sternum ( Fig. 9 ). Paraprocts ( Fig. 12 ) broad, rounded, setae as illustrated, sensory fields with five trichobothria. Epiproct ( Fig. 12 ) trapeziform, with setae posteriorly as illustrated.

Measurements. FW: 1112, HW: 797, F: 373, T: 639, t1: 228, t2: 79, ctt1: 8, Mx4: 86, f1: 214, f2: 185, f3: 145, f4: 101, f5: 72, IO: 336, D: 150, d: 112, IO/d: 3.0, PO: 0.74.

Specimens studied. Holotype male. Macropterous. MEXICO . Oaxaca . 34 km SW Oaxaca City, towards Puerto Escondido. 4.ii.1980. On dead hanging leaves of Agave sp. A. N. García Aldrete. 2 paratypes male, macropterous , 3 paratypes female, brachypterous, same data as the holotype . Ca. Mitla. 3.ii.1980. On dead hanging leaves of Agave sp. 1 male, 1 female, macropterous (non- paratypes), 8 nymphs A. N. García Aldrete (CNIN).

Etymology. This species honors the memory of Peter Cameron, author of the Insecta. Hymenoptera . Volume I (1883–1900) and Insecta. Hymenoptera (Fossores) . Volume II (1888–1900), of the Biologia Centrali-Americana.

Remarks. This species is related to L. moroni García Aldrete (2015 a) , so far endemic to the Mexican state of Puebla, but it differs from it in having the posterior processes of the hypandrium more robust, and in having the distal fifths of the phallosome apodemes with a field of microspines, whereas in L. moroni the apices of the phallosome apodemes have a short row of microspines on the inner border. Also, the terga of meso- and metathorax, and the abdominal terguites 4–6 are ochre. This species seem to keep an association with Agave plants. The males are macropterous and the females are mostly brachypterous, although one macropterous female was found in Mitla.

Figures

FIGURES 8 – 13. Lachesilla cameroni n. sp. 8. Fore- and hind- wings. Male. 9. Gonapophyses and ninth sternum. Female. 10. Subgenital plate. Female. 11. Hypandrium and phallosome. Male. 12. Epiproct and right paraproct. Female. 13. Epiproct and right paraproct. Male. Scales in mm.