Luciaphorus perniciosus Rack 1983
Creators: name: Khaustov, Alexander A.
name: Shentu, Hsuan
name: Ho, Chyi-Chen
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Pygmephoridae
Luciaphorus
Luciaphorus perniciosus

description: LuciaphoRus peRNiciosus Rack, 1983
(FIGS. 1–10)
Luciaphorus perniciosus Rack, 1983, p. 140, Figs. 1–18.
Diagnosis. FEMALE. SETAE h 1 AND h 2 WEAKLY BARBED AND MUcH LONGER THAN OTHER DORSAL SETAE, SETAE chb, dFe AND m ON GNATHOSOMA ABSENT, APODEMES 3 PRESENT, SETAE 1 a, 1 c, 2 a, AND 2 b WEAKLY BARBED, TIBIOTARSUS I SLIGHTLY THIcKER THAN GENU, SETA pv’ OF TIBIOTARSUS I SMOOTH AND BLUNT-ENDED, SETA d OF TIBIA III DISTINcTLY BLUNT-ENDED AND BRUSH-LIKE DISTALLY. MALE WITH SETAE sc 2 AND c 2 SMOOTH AND POINTED. SETA l’ OF GENU II NOT MODIFIED.
Redescription. FEMALE (FIGS 1–3, 7–9). LENGTH OF IDIOSOMA 130–135, WIDTH 82–85.
Gnathosoma. LENGTH OF GNATHOSOMA 20–21, WIDTH 14–15. DORSAL MEDIAN APODEME ABSENT. SETAE cha 5 SMOOTH, POINTED; SETAE chb ABSENT. SETA dGe POINTED, SMOOTH; SETA dFe ABSENT. SUBcAPITULAR SETAE m ABSENT. PHARYNGEAL PUMP 2 SMOOTH.
Idiosomal dorsum (FIGS 1A, 8A, C, E, 9A, C). PRODORSAL SHIELD WITH LARGE DIMPLES IN ANTERIOR PART (FIG. 8C). OTHER DORSAL SHIELDS SMOOTH. SETAE h 1 AND h 2 WEAKLY BARBED, MUcH LONGER THAN OTHER DORSAL SETAE; SETAE v 2 WITH FEW BARBS; OTHER DORSAL SETAE STRONGLY BARBED, ALMOST BRUSH-LIKE DISTALLY (FIG. 9A). CUPULES ia ON TERGITE D SITUATED ANTEROLATERALLY TO BASES OF SETAE d; cUPULES im ON TERGITE EF SITUATED ANTERIORLY TO SETAE e; cUPULES ih ON TERGITE H SITUATED JUST ANTEROLATERALLY TO BASES OF SETAE h 1. LENGTHS OF DORSAL SETAE: v 1 10–11, v 2 8–9, sc 2 14–15, c 1 11–12, c 2 13–14, d 13–15, e 13–14, f 13, h 1 45–50, h 2 49–51. DISTANcES BETWEEN SETAE: v 1 –v 1 20–22, v 2 –v 2 34 –35, sc 2 –sc 2 46– 49, c 1– c 1 21–23, c 1– c 2 20–22, d–d 33–35, e–e 23–36, e–f 9–11, f–f 14–16, h 1– h 1 26–28, h 1– h 2 5, h 2– h 2 35–36.
Idiosomal venter (FIGS. 1B, 8B, D, F). VENTRAL PLATES SMOOTH. VENTRAL SETAE 3 b AND 4 a WEAKLY BLUNT-ENDED AND SMOOTH; SETAE 1 a, 1 c, 2 a, 2 b WEAKLY BARBED AND POINTED; SETAE ps 3 DISTINcTLY BLUNT-ENDED AND BARBED (FIG. 8F); OTHER VENTRAL SETAE POINTED AND SMOOTH. AP3 REPRESENTED BY TWO WEAKLY ScLEROTIzED SLIGHTLY cURVED ScLERITES LOcATED JUST MEDIALLY TO SETAE 3 a AND ANTERIORLY TO SETAE 3 c; AP4 VERY SHORT, NOT REAcHING BASES OF SETAE 3 b. LENGTHS OF VENTRAL SETAE: 1 a 17–18, 1 b 13–14, 1 c 19–21, 2 a 15–16, 2 b 15–16, 2 c 10–12, 3 a 8–10, 3 b 7–8, 3 c 15–16, 4 a 7–8, 4 b 15–17, 4 c 12–13, ps 1 6–8, ps 2 5–7, ps 3 8–9.
Legs (FIGS. 2, 3, 7, 9B, D). LEG I (FIGS. 2A, 9B). TIBIOTARSUS I ONLY SLIGHTLY THIcKER THAN GENU. LENGTHS OF SOLENIDIA ω 1 4, ω 2 3, φ 1 5, φ 2 3; ALL SOLENIDIA WEAKLY cLAVATE. SETAE l’ OF FEMUR AND pv’ OF TIBIOTARSUS BLUNT-ENDED AND SMOOTH; OTHER SETAE OF LEG I (EXcEPT EUPATHIDIA) POINTED AND SPARSELY BARBED. LEG II (FIG. 2B). SOLENIDION ω 5 WEAKLY cLAVATE. SETA l’ OF FEMUR BLUNT-ENDED AND SMOOTH; SETAE u’ AND tc” SMOOTH AND POINTED, OTHER LEG SETAE SPARSELY BARBED AND POINTED. LEG III (FIGS. 3A, 9D). SETAE d OF FEMUR AND TIBIA DISTINcTLY BLUNT-ENDED AND STRONGLY BARBED; SETA u’ SMOOTH AND POINTED; OTHER SETAE POINTED AND SPARSELY BARBED. LEG IV (FIG. 3B). SETAE d OF FEMUR AND TIBIA DISTINcTLY BLUNT-ENDED AND STRONGLY BARBED; SETAE v” OF TIBIA AND pl” BLUNT-ENDED AND SPARSELY BARBED; OTHER LEG SETAE POINTED AND SPARSELY BARBED.
MALE (FIGS 4–6, 10). LENGTH OF IDIOSOMA 140–150, WIDTH 91–98.
Idiosomal dorsum (FIGS 4A, 10A–C). SETAE f WEAKLY BARBED; OTHER DORSAL SETAE SMOOTH. SETAE sc 2 AND c 2 POINTED, MUcH LONGER THAN OTHER DORSAL SETAE; OTHER DORSAL SETAE BLUNT-ENDED. CUPULES ia ON TERGITE CD SITUATED ANTERIORLY TO BASES OF SETAE d; cUPULES im ON TERGITE EF SITUATED ANTERIORLY TO SETAE f. LENGTHS OF DORSAL SETAE: v 1 4–5, v 2 2–3, sc 1 2–3, sc 2 26–30, c 1 6, c 2 25–28, d 4–6, e 4–5, f 10–11, h 1 3. DISTANcES BETWEEN SETAE: v 1 –v 1 4, v 2 –v 2 16–17, sc 1 –sc 1 11, sc 2 –sc 2 30–32, c 1– c 1 34–36, c 1– c 2 15–16, c 2– c 2 65–66, d–d 34–36, e–e 17–18, e–f 3, f–f 17, h 1– h 1 13–14.
Idiosomal venter (FIG. 4B). VENTRAL PLATES SMOOTH. ALL VENTRAL SETAE WEAKLY BLUNT-ENDED. SETAE 3 a, 3 b, 4 b AND (ps) SMOOTH, OTHER VENTRAL SETAE WITH FEW MINUTE BARBS. LENGTHS OF VENTRAL SETAE: 1 a 7–8, 1 b 5, 1 c 7–8, 2 a 9–10, 2 b 8–9, 2 c 5, 3 a 6–7, 3 b 8–9, 3 c 7, 4 a 9–10, 4 b 8–9, 4 c 6–7, ps 1 1, ps 2 4.
Legs (FIGS. 5, 6, 10D). LEG I (FIG. 5A). LENGTHS OF SOLENIDIA ω 1 6, ω 2 5, φ 1 4, φ 2 3; SOLENIDION φ 1 cLAVATE, OTHER SOLENIDIA BAcULIFORM. SETAE (pl), pv” AND (u) SMOOTH AND POINTED; SETAE (l) OF FEMUR AND pv’ OF TARSUS SMOOTH AND BLUNT-ENDED; SETAE d, v” OF FEMUR, (l) OF GENU, d, l’, v” OF TIBIA POINTED AND WEAKLY BARBED; OTHER SETAE OF LEG I (EXcEPT EUPATHIDIA) BLUNT-ENDED AND WEAKLY BARBED. LEG II (FIG. 5B). SOLENIDION ω 4 WEAKLY cLAVATE, SOLENIDION φ 3 BAcULIFORM. SETAE (u) AND tc” SMOOTH AND POINTED; v’ OF TROcHANTER AND l’ OF FEMUR SMOOTH AND BLUNT-ENDED; d, v” OF FEMUR, (l) AND v’ OF GENU BLUNT-ENDED AND WEAKLY BARBED; OTHER LEG SETAE SPARSELY BARBED AND POINTED. LEG III (FIG. 6A). SOLENIDION φ 6–7 BAcULIFORM. SETAE (u) AND tc” SMOOTH AND POINTED; d AND v’ OF FEMUR SMOOTH AND BLUNT- ENDED; v’ OF TROcHANTER AND v’ OF GENU BLUNT-ENDED AND WEAKLY BARBED; OTHER LEG SETAE SPARSELY BARBED AND POINTED. LEG IV (FIG. 6B, 10D). SOLENIDION φ 7–8 BAcULIFORM. SETAE v’ OF GENU AND TIBIA BLUNT-ENDED AND BARBED; SETAE tc’ AND u’ POINTED AND SMOOTH; OTHER LEG SETAE BLUNT-ENDED AND SMOOTH.
Material examined. TWENTY-TWO FEMALES, 9 MALES, RAISED FROM FEMALES cOLLEcTED ON Auricularia polytricha, WUFENG, TAIcHUNG, TAIWAN, 19.XI.2016, H. SHENTU.
Remarks. IN THE ORIGINAL DEScRIPTION, RAcK (1983) ILLUSTRATED SMALL SOLENIDIA ON TIBIAE II AND III IN FEMALE. IN FAcT, SOLENIDIA ON TIBIAE III AND IV ARE ABSENT (FIG. 9D), BUT THERE ARE SUBcUTIcULAR INVAGINATIONS ON THE TYPIcAL LOcALITY OF TIBIAL SOLENIDIA. THESE INVAGINATIONS ARE VERY SIMILAR TO TINY SOLENIDIA (FIG. 7) AND RAcK (1983) ERRONEOUSLY INTERPRETED THESE STRUcTURES AS SOLENIDIA. ALSO, IN THE ORIGINAL DEScRIPTION OF THE MALE (RAcK 1983) SETA d ON TIBIA IV IS ABSENT. IN FAcT, THIS SETA IS PRESENT, BUT VERY SMALL AND TYPIcALLY HIDES UNDER THE LARGE TIBIAL SOLENIDION.
description: Published as part of Khaustov, Alexander A., Shentu, Hsuan & Ho, Chyi-Chen, 2018, Redefinition of the genus Luciaphorus Mahunka, 1981 (Acari: Pygmephoridae) with redescription of L. perNiciosus Rack, 1983 and L. auriculariae Gao, Zou and Jiang, 1990, pp. 536-556 in Zootaxa 4369 (4) on pages 539-545, DOI: 10.11646/zootaxa.4369.4.5, http://zenodo.org/record/1136432