Engistanoxia sagala sp. nov. from Kenya (Coleoptera: Scarabaeidae: Melolonthinae: Melolonthini)
Author
Sehnal, Richard
text
Acta Entomologica Musei Nationalis Pragae
2014
2014-12-15
54
2
563
569
journal article
10.5281/zenodo.5301245
0374-1036
5301245
D86FB04C-BD99-44FC-A724-B9DA84D079FEC
Engistanoxia dessertineae
Lacroix, 2002
(
Figs 8–14
)
Engistanoxia dessertinae
Lacroix, 2002: 159
(primary description); LACROIX (2010): 198 (redescription, catalogue).
Type
locality.
Kenya
,
Makueni county
, Kibwezi.
Type material examined.
HOLOTYPE
: J ދ
KENYA
XII-93 / Kibwezi / Werner leg. [p] //
HOLOTYPE
[p, red label] //
Engistanoxia
/ dessertinei n.sp [hw] / M. LACROIX det. 2002 [p] //
Engistanoxia
/
dessertineae
Lacroix, 2002
/ M. Lacroix det. [p] //
Engistanoxia
/ dessertineae [hw]ތ (
MNHN
).
Redescription.
Male
(
holotype
). Body length 25.0 mm (without pygidium). Body elongate, gradually widening posteriorly. Dorsal surface and abdomen reddish brown, legs partly darker to blackish brown, antennae pale brown, elytra pruinose (
Fig. 8
).
Head.
Clypeus 2.3 times wider than long, on lateral margins strongly round and with anterior margin medially emarginate (
Fig. 9
). Spaces between scales on clypeus and frons amount at most to half width of macrosetae. Eye canthus long, with macrosetae in two irregular rows; anterior columnar macrosetae long, posterior columnar macrosetae half as short and half as many as anterior scales. Antennae decamerous. Antennal club hexamerous, anteriorly gently cambered, 1.7 times longer than antennal shaft (antennomeres 1–4 combined). Antennomere I cambered, at apex evenly rounded and with long setae, antennomere IV prolonged basally in lamela, reaching the ¿rst half of antennomere V. Apex of antennal club with evenly distributed ¿ne hairs (
Fig. 10
). Terminal maxillary palpomere widest in two thirds, apically truncate and with a terminal tubercle on inner, more angular side, on dorsal surface with a large oval alutaceous area widening in two thirds of length (
Fig. 11
).
Pronotum
weekly convex, approximately nonagonal (
Fig. 12
), 1.4 times wider than long, widest in front third, with distinct impressed medial line. Anterior and posterior angles round but discernible. Lateral margins of pronotum slim, strongly curved up, in sublateral view appearing smooth but crenulate, with a yellow hook-shaped macroseta issuing from each crenulation (
Fig. 15
). Surface densely punctate; punctures unevenly distributed, spaces between them smooth and matte; each puncture bearing pointed scale as long as scales on clypeus and frons. Scales forming groups oriented mostly toward midline.
Scutellar shield
on periphery with round punctures which bear yellowish-white scales of same size; in basal corners group of densely packed round and prolonged macrosetae and ¿ne hairs; center scaly, on sides with facets devoid of punctures and scales.
Elytra
convex, elytron 2.6 times longer than wide. Crests of costae glabrous, their sides and intervals unevenly covered by punctures and scales similar to those on pronotum. Spaces between punctures and scales ¿nely rugate and matte. Lateral margins with hairs twice as long as those on pronotal margins.
Macropterous.
Legs.
All femora shiny, irregularly punctate, macrosetae long. Tibiae covered by conspicuous wide scales spaced at most at scale width. Inner tooth of pretarsus half the length of apical tooth. Meso- and metatibiae deeply punctate, macrosetae ¿ne, long and errect.
Abdominal ventrites
dark reddish brown, matte, ¿nely punctate, covered by oval yellow scales and a row of semierect yellowish macrosetae. Pygidium slightly concave, shallowly punctate, with yellowish-white caudally oriented scales posteriorly grading into ¿ne, long, compact yellowish-white macrosetae.
Male genitalia
(
Figs 13–14
). Aedeagus symmetrical. Phallobase in lateral view with three extensions, ventrolaterally slightly excised. Parameres forming a symmetrical lobe with an open medial oval summit and an oval concavity in its center. Dorsal part of lobe steeply elevated and then reclined at angle ventral to base.