Crossocerus (Thao) Tsuneki 1982
Creators: name: Saini, Varun
name: Dey, Debjani
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Crabronidae
Crossocerus

description: Key to the subspecies of Thao Tsuneki, 1982 (modified from Leclercq, 1986)
1. Light body parts white, not yellow; largely of this color: mandible, pronotal collar, pronotal lobe, scutellum, tegula; completely (without slightest darkened spot): scape, tibiae I-II; more than basal half of tibia III, large spots at apex of femora I-III, tarsi I-III (except apical tarsomeres brown). Trochanters completely amber yellow. Sterna light brown. Scutum punctures very sparse and fine but well defined, irregular. Pronotum collar perfectly rounded laterally. Distribution: Brunei .................................................................................... Crossocerus nitidicorpus uluanus Leclercq 1986
- Light body parts more or less pale yellow, not white. Tibiae I-II darkened on inner side............................. 2
2. Median lobe of clypeus quadridentate, medial tooth emarginate (Fig. 23 of Tsuneki 1984). Scutellum all black. Pronotal collar distinctly angulate laterally. Scutum punctation sparse and fine. Distribution: Philippines .............................................................................................. C. nitidicorpus philippinicus Tsuneki 1984
- Median lobe of clypeus tridentate, medial tooth round or subtruncate apically. Scutellum broadly yellow or all black (Fig. 11) ................................................................................................... 3
3. Pronotal collar broadly yellow upto to its side, which is slightly but visibly raised. Scutal punctures very sparse even at middle. Scape completely yellow; femora I-II with large yellow spot above apex; about basal half of tibia III yellow; metatarsus III all pale yellow; trochanters I-II amber yellow. Distribution: Malaysia: Johor ......... C. nitidicorpus johorensis Leclercq 1986
- Pronotal collar perfectly rounded and not yellow laterally. Scutum relatively densely (Fig. 9) punctate, especially at center and anteriorly (interspaces between punctures much larger than these). Scape more or less darkened dorsally toward apex; metatarsus III more or less largely darkened...................................................................... 4
4. Femora I-II largely yellow, with black spot beneath; trochanters I-III yellow apically; tibia III largely yellow. Clypeus: with well-rounded medial tooth, less prominent than lateral teeth (Fig. 15 of Tsuneki 1968 and Fig. 24 of Tsuneki 1984, p. 13). Distribution: Taiwan .................................................... C. nitidicorpus nitidicorpus Tsuneki, 1968
- Femora I-II black, with small yellow spot at apex; other characters varying....................................... 5
5. Yellow: all trochanters, basal 1/3 rd of tibia III, scape except dorsal spot near apex; coxae of all legs, tergum I and sterna I-II all black; mandible yellow except apically. Clypeus: median carina absent, median tooth thick, almost truncate apically, lateral teeth slightly elongated. Distribution: Sri Lanka, Malaysia .................. C. nitidicorpus weddagalae Leclercq, 1986
- Yellow: trochanter I with basal and apical spots, trochanter II except ventral spot, trochanter III completely, short dorsal stripe on tibia III basally, apical spot on coxae I-II, coxa III ventrally, scape except large dorsal stripe, tergum I basally, sternum I largely, patch on sternum II near base (Figs 1–3 & 14); mandible ferruginous (Fig. 8). Clypeus: medial carina present, median tooth of clypeus short and blunt, lateral teeth short (Fig. 7). Distribution: India ................................................................................................. C. nitidicorpus indicus Saini & Dey, subsp. nov.
description: Published as part of Saini, Varun & Dey, Debjani, 2022, First record of subgenus Thao Tsuneki, 1982 (Hymenoptera: Crabronidae Crabronini) from India: a new subspecies and a key to all subspecies of Crossocerus (Thao) nitidicorpus Tsuneki, pp. 117-124 in Zootaxa 5159 (1) on page 118, DOI: 10.11646/zootaxa.5159.1.5, http://zenodo.org/record/6770966