A review of the family Alycidae (Acari, Acariformes) from South Africa
Author
Uusitalo, Matti
Zoological Museum, Centre for Biodiversity, University of Turku, FIN- 20014 Turku, Finland
Author
Ueckermann, Edward A.
0000-0003-4213-4309
Unit for Environmental Sciences and Management, Potchefstroom Campus, North-West University, Private Bag X 6001, Potchefstroom, 2520, South Africa & https: // orcid. org / 0000 - 0003 - 4213 - 4309
Author
Theron, Pieter D.
0000-0003-4213-4309
Unit for Environmental Sciences and Management, Potchefstroom Campus, North-West University, Private Bag X 6001, Potchefstroom, 2520, South Africa & https: // orcid. org / 0000 - 0003 - 4213 - 4309
text
Zootaxa
2020
2020-10-01
4858
3
301
340
journal article
8277
10.11646/zootaxa.4858.3.1
f8abea37-7992-482c-8a49-982d08cf9f66
1175-5326
4412321
7BA52F1C-4084-4915-A7D9-8DA99379086B
Petralycus brevicornis
Theron, 1977
(
Figs. 134E, F
,
135A, C
)
Petralycus brevicornis
Theron, 1977: 42
, figs. 16–29.
Description.
Dorsum
(
Figs. 134E, F
,
135B
). Length ca. 480 μm; irregularily arranged dorsal setae slightly swollen; tiny additional setae on ventral side; naso short, broad at base, abruptly tapering to a sharp point, setae
vi
twice as long as setae
sce
, setae
in
and
exp
absent, filiform sensilla
sci
sparsely ciliated and clavate sensilla
ve
barbed.
Venter.
Genital valves each with 16-17 genital setae; 4 anal setae per valve.
Gnathosoma
(
Fig. 135C
). Pair of smooth cheliceral setae dorsally; rutella pointed; no additional setae on subcapitulum (three pairs present); palpal tarsi with enlarged solenidion reaching over two mucronate, terminal eupathids.
Legs.
Solenidial formula for tarsi, tibiae, genua and femora on legs I, II, III and IV, respectively: 1-1-0-0, 2-2-2- 2, 5-1-2-2, 2-0-0-0, all solenidia baculiform, also smaller solenidia are subequal in width, i.e. they are not tapering as the ceratiform solenidia do; tarsi I with several barbed eupathids and a spine-like famulus distally.
Type material examined.
Holotype
male from pasture soil,
Badplaas
,
MPUMALANGA PROVINCE
,
April 1972
,
K.N. de Kock. Deposited
at the
Mite Collection
of ARC-Plant
Health
and
Protection
,
Pretoria
,
South Africa
.
Differential diagnosis.
This neotrichous species can be differentiated from all the other petralycines by having only two pairs of prodorsal setae (
vi
and
sce
) present (the pairs of setae
in
and
exp
are absent), an abruptly tapering, short naso and setae
vi
two times longer than setae
sce
.